Presentation to the OMG's MARS Task Force in June, 2010 on proposed improvements to the Java API to the OMG's Data Distribution Service specification (DDS).
The document provides an overview and introduction to Spring Data JPA, including:
1) How Spring Data abstracts away basic data management concepts and supports both relational and non-relational databases.
2) An example of refactoring from plain JPA to Spring Data JPA by defining a repository interface and using built-in query methods.
3) How the Spring Data repository abstraction reduces the effort to implement data access layers through interfaces like Repository.
Java and Spring Data JPA: Easy SQL Data Access
Abstract
Presenter: Miya W. Longwe, MBA, MSE, Tech Lead, Staples, Inc, Framingham MA 01702
Accessing data repositories in various applications programming languages typically involves writing of tedious boilerplate lines of code. Some application development frameworks such as Spring have tried to make the experience more succinct by providing abstraction layers such as HibernateTemplate and JdbcTemplate, etc. Despite these APIs, the developers still spend a lot time writing repetitive code than concentrating on implementing business requirements. Developers at Spring, led by Oliver Gierke, introduced Spring Data JPA which “aims to significantly improve the implementation of data access layers by reducing the effort to the amount that's actually needed. As a developer you write your repository interfaces, including custom finder methods, and Spring will provide the implementation automatically”.
Spring Data JPA provides a powerful, out-of-the-box alternative to creating your own DAO framework. You declare custom repository operations on an interface, and the framework generates dynamic implementations (not code generation) automatically, based on conventions around method names. As part of the presentation, we'll also review a demo to look at Spring Java configuration (as opposed to XML configuration), and investigate the @Profile annotation – configuration details which may make life a bit easier in various ways when setting up unit testing of our repository classes, using out-of-the-box alternative to creating DAO framework, how to create custom repositories, pagination and support for custom queries among other features.
Presenter's Bio
Miya W. Longwe is a Senior Software Engineer and Tech Lead at Staples, Inc. where he is currently working on an initiative to re-platform the company’s ecommerce architecture to offer platform-driven, modular products that can be quickly customized, enhanced, and branded as needed.
Miya has been a software professional since 1997. His 16 years software development career includes working for large companies to small startups, building solutions for enterprises and consumers, working with a broad range of technologies.
Miya Longwe is a hands-on java developer. He believes that in order to be a relevant and effective software developer one needs to remain a deeply knowledgeable, up-to-date, and productive software developer. His research interests include model-driven engineering, domain specific languages, test driven development and project risk management.
Miya graduated from the University of Malawi (Lilongwe, Malawi) and has an MBA from the University of Wales Cardiff Business School (Wales, UK) and a Masters in Software Engineering from Brandeis University (MA, USA).
Occasionally, Miya can be spotted fishing the banks of the south shore (MA) with his two boys, William and Daniel.
Data access 2.0? Please welcome: Spring Data!Oliver Gierke
Spring Data provides a consistent programming model for data access while retaining store-specific features. It supports common repositories and query languages across relational, document, and graph databases. Spring Data includes sophisticated mapping support, template classes, query methods in repository interfaces, and integration of Querydsl for complex queries. It allows for cross-store persistence while also enabling specialized features like geospatial queries for MongoDB.
Spring Data provides a common data access layer for various data stores like MongoDB, JPA, Neo4J, and Redis. It simplifies polyglot persistence through repositories that provide common CRUD methods. Developers define entities specific to the data store and a repository interface with finder methods. Spring Data generates an implementation that interacts with the underlying data store transparently. This allows writing data access code that is portable across data sources.
This document summarizes the process for connecting HDF and ISO metadata standards. It involves:
1. Creating an ISO compliant XML file (SMAP.xml) containing metadata.
2. Transforming this ISO file into an equivalent NcML format file (ISO2NCML.xml) using an XSL stylesheet.
3. Transforming the NcML file into Python code (NCML2h5py.py) to instantiate the metadata structure into an HDF5 file (SMAP.h5) using another XSL stylesheet.
4. Extracting the HDF5 metadata structure back into an XML file (SMAPHDF.xml) and transforming it back into ISO format (SM
The document provides an overview and introduction to Spring Data JPA, including:
1) How Spring Data abstracts away basic data management concepts and supports both relational and non-relational databases.
2) An example of refactoring from plain JPA to Spring Data JPA by defining a repository interface and using built-in query methods.
3) How the Spring Data repository abstraction reduces the effort to implement data access layers through interfaces like Repository.
Java and Spring Data JPA: Easy SQL Data Access
Abstract
Presenter: Miya W. Longwe, MBA, MSE, Tech Lead, Staples, Inc, Framingham MA 01702
Accessing data repositories in various applications programming languages typically involves writing of tedious boilerplate lines of code. Some application development frameworks such as Spring have tried to make the experience more succinct by providing abstraction layers such as HibernateTemplate and JdbcTemplate, etc. Despite these APIs, the developers still spend a lot time writing repetitive code than concentrating on implementing business requirements. Developers at Spring, led by Oliver Gierke, introduced Spring Data JPA which “aims to significantly improve the implementation of data access layers by reducing the effort to the amount that's actually needed. As a developer you write your repository interfaces, including custom finder methods, and Spring will provide the implementation automatically”.
Spring Data JPA provides a powerful, out-of-the-box alternative to creating your own DAO framework. You declare custom repository operations on an interface, and the framework generates dynamic implementations (not code generation) automatically, based on conventions around method names. As part of the presentation, we'll also review a demo to look at Spring Java configuration (as opposed to XML configuration), and investigate the @Profile annotation – configuration details which may make life a bit easier in various ways when setting up unit testing of our repository classes, using out-of-the-box alternative to creating DAO framework, how to create custom repositories, pagination and support for custom queries among other features.
Presenter's Bio
Miya W. Longwe is a Senior Software Engineer and Tech Lead at Staples, Inc. where he is currently working on an initiative to re-platform the company’s ecommerce architecture to offer platform-driven, modular products that can be quickly customized, enhanced, and branded as needed.
Miya has been a software professional since 1997. His 16 years software development career includes working for large companies to small startups, building solutions for enterprises and consumers, working with a broad range of technologies.
Miya Longwe is a hands-on java developer. He believes that in order to be a relevant and effective software developer one needs to remain a deeply knowledgeable, up-to-date, and productive software developer. His research interests include model-driven engineering, domain specific languages, test driven development and project risk management.
Miya graduated from the University of Malawi (Lilongwe, Malawi) and has an MBA from the University of Wales Cardiff Business School (Wales, UK) and a Masters in Software Engineering from Brandeis University (MA, USA).
Occasionally, Miya can be spotted fishing the banks of the south shore (MA) with his two boys, William and Daniel.
Data access 2.0? Please welcome: Spring Data!Oliver Gierke
Spring Data provides a consistent programming model for data access while retaining store-specific features. It supports common repositories and query languages across relational, document, and graph databases. Spring Data includes sophisticated mapping support, template classes, query methods in repository interfaces, and integration of Querydsl for complex queries. It allows for cross-store persistence while also enabling specialized features like geospatial queries for MongoDB.
Spring Data provides a common data access layer for various data stores like MongoDB, JPA, Neo4J, and Redis. It simplifies polyglot persistence through repositories that provide common CRUD methods. Developers define entities specific to the data store and a repository interface with finder methods. Spring Data generates an implementation that interacts with the underlying data store transparently. This allows writing data access code that is portable across data sources.
This document summarizes the process for connecting HDF and ISO metadata standards. It involves:
1. Creating an ISO compliant XML file (SMAP.xml) containing metadata.
2. Transforming this ISO file into an equivalent NcML format file (ISO2NCML.xml) using an XSL stylesheet.
3. Transforming the NcML file into Python code (NCML2h5py.py) to instantiate the metadata structure into an HDF5 file (SMAP.h5) using another XSL stylesheet.
4. Extracting the HDF5 metadata structure back into an XML file (SMAPHDF.xml) and transforming it back into ISO format (SM
This document provides an overview of Morphia, a Java object mapping library for MongoDB. It discusses Morphia's advantages over using raw MongoDB drivers, including type safety and the ability to work with POJOs rather than generic maps. Key features covered include annotation-based mapping of entities to collections, lifecycle callbacks, queries, updates, and support for relationships and object graphs. The document aims to demonstrate how Morphia simplifies common data access patterns while retaining performance.
The Uniface Lectures are an ongoing series of free monthly technical webinars that cover a wide range of useful topics. In this edition of the Lectures webinar on Application & Infrastructure Security - JSON Web Tokens we cover the following main topics:
• The JWT standard
• Applying JWT to Uniface
• Uniface technology to support JWT
• Sample application of JWT
• And more…
Session video recording is on: youtube.com/unifacesme
Webinar video recording archive: go.uniface.com/Lectures-page
HFile: A Block-Indexed File Format to Store Sorted Key-Value PairsSchubert Zhang
HFile is a mimic of Google’s SSTable. Now, it is available in Hadoop HBase-0.20.0. And the previous releases of HBase temporarily use an alternate file format – MapFile, which is a common file format in Hadoop IO package. I think HFile should also become a common file format when it becomes mature, and should be moved into the common IO package of Hadoop in the future.
This document discusses Last.fm's use of HFiles outside of HBase. It summarizes tests performed comparing Last.fm's original plain text file format to a new binary format based on HFiles. The HFile format reduced file size by 80% and query times by over 90%. Last.fm is moving its chartserver data storage to HBase to address indexing slowness and allow different teams to use different NoSQL systems. The document also advertises two open data scientist positions at Last.fm.
Formalizing (Web) Standards: An Application of Test and ProofAchim D. Brucker
Most popular technologies are based on informal or semiformal standards that lack a rigid formal semantics. Typical examples include web technologies such as the DOM or HTML, which are defined by the Web Hypertext Application Technology Working Group (WHATWG) and the World Wide Web Consortium (W3C). While there might be API specifications and test cases meant to assert the compliance of a certain implementation, the actual standard is rarely accompanied by a formal model that would lend itself for, e.g., verifying the security or safety properties of real systems.
Even when such a formalization of a standard exists, two important questions arise: first, to what extend does the formal model comply to the standard and, second, to what extend does the implementation comply to the formal model and the assumptions made during the verification? In this paper, we present an approach that brings all three involved artifacts - the (semi-)formal standard, the formalization of the standard, and the implementations - closer together by combining verification, symbolic execution, and specification based testing.
The document describes the structure and format of blocks in a key-value store. It outlines the header, data, leaf index, meta, and trailer blocks. The header includes metadata like the block type and sizes. Data blocks contain compressed and uncompressed key-value entries. Leaf index blocks point to data blocks and include offsets. Meta blocks store metadata indexes. The trailer contains version and load-on-open metadata.
XML Technologies for RESTful Services Developmentruyalarcon
This document discusses XML technologies for developing RESTful services. It begins by outlining EMC's motivation for establishing an integration architecture based on REST principles. The document then covers key REST principles like identifying resources with URIs and using a uniform interface. It describes implementing RESTful services using JAX-RS and binding operations to XProc pipelines. The framework supports developing domain-specific RESTful APIs that address all four REST principles through the use of XML, XQuery, XSLT, and an XML database. Hypermedia is added through XSLT transformations, and the framework measures up well against JAX-RS in addressing REST principles.
The document discusses the Document Object Model (DOM), which provides a programming interface that allows XML documents to be accessed and manipulated as objects in a tree structure. DOM represents each node of the XML tree as an object with properties and behavior for processing the XML. The document outlines how DOM can be used to navigate an XML document's structure, report information from nodes, and modify the XML document. It also provides examples of using DOM to parse an XML file and display its tree structure.
Objects arent records with byte codes on the sideMichael Caruso
The document discusses traditional views of objects as records with methods and argues this approach does not scale well for business objects. It advocates establishing principles like generality and comprehensibility from application and technology perspectives. Collections and queries are embedded throughout applications, so the technology needs a collection-centric theory of operation to achieve scalability. Detail at the collection level is as important as summary information.
This document discusses the DDS-PSM-Cxx standard for implementing the Data Distribution Service (DDS) in C++. It provides an overview of the key concepts in DDS including domains, topics, publishers, subscribers, datawriters and datareaders. It also describes content filtering, queries, instances and state-based selection. The document notes that simd-cxx influenced DDS-PSM-Cxx and that simd-cxx v1.0 implements this standard. It provides references to related DDS implementations and APIs.
RDF, OData, and GData are data protocols with differences in their logical models, physical implementations, and intents. RDF uses a graph/EAV logical model and is intended for data syndication and linking on the web. It has open extensibility through RDFS/OWL. OData uses a graph/EAV model grounded in AtomPub and EDM, and is intended for data publishing and syndication. It reuses some Microsoft types and namespaces. GData has an unclear logical model behind Google services, and is intended for Google cloud data publishing through AtomPub/JSON formats only.
Object Graph Mapping with Spring Data Neo4j 3 - Nicki Watt & Michael Hunger @...Neo4j
Nicki and Michael have recently been working together on the project to develop/upgrade the Spring Data Neo4j 3 (SDN) library to take advantage of some of the latest Neo4j 2.0 features. This talk takes a look at what can be expected of the new framework, and how it can be used to help model various different use cases with a simple Java domain model backed by a Neo4j database.
[HES2013] Nifty stuff that you can still do with android by Xavier MartinHackito Ergo Sum
Fact: It is generally assumed that reverse engineering of Android applications is much easier than on other architectures. Static program analysis is the way to go.You can go back and forth between application and bytecode assembly without much hassle.
Reality: Few techniques are willing to make their comeback on this platform, namely dynamically code loading and self modifying code : bringing the fun back ! Source code examples will be shown, with step by step explanation.
https://www.hackitoergosum.org
The document provides an overview of Hibernate including:
1) An introduction to Hibernate and its features like object/relational mapping and caching.
2) Reasons for using Hibernate like reducing SQL statements and handling associations.
3) Steps to configure and use Hibernate in an application including adding JAR files, configuring Hibernate.cfg.xml, setting the SQL dialect, and mapping classes to tables.
4) A simple case study demonstrating using Hibernate for CRUD operations, ID generation, queries, and caching.
5) Details on transactions, criteria queries, and the two levels of caching in Hibernate.
This document discusses NoSQL databases and frameworks for using them with Java applications. It summarizes the advantages of NoSQL databases, different types including key-value, column-oriented, document and graph databases. Frameworks like JPA are challenging to use with NoSQL due to differences from SQL databases. Other options like Spring Data and GORM aim to provide a more native interface for NoSQL but support a limited number of database types. Choosing the right approach depends on the specific use case and database.
Social Media Revolutions: How to communicate in the web 2.0 worldAlastair Smith
The document discusses strategies for effective communication on social media platforms. It emphasizes the importance of understanding the audience and their interests, sharing engaging content that takes advantage of each platform's capabilities, and being prepared to respond to both positive and negative feedback. The key is listening to the audience and providing value to them rather than just promoting oneself or one's company.
A brief presented by LT Lesley Lykins, Deputy for Emerging Media integration for the Department of Navy Office of Information, to the American Legion National Conference.
Extensible and Dynamic Topic Types for DDSRick Warren
Presentation to a Technical Meeting of the Object Management Group (OMG) describing a revised response to an RFP for improvements to the DDS type system in December 2009.
This presentation "replaces" my earlier presentation http://www.slideshare.net/rickbwarren/extensible-and-dynamic-topic-types-for-dds.
Extensible and Dynamic Topic Types for DDSRick Warren
Presentation to the OMG MARS Task Force from March of 2010 on the "Extensible and Dynamic Topic Types for DDS" (DDS-XTypes) specification. Following this presentation, the Task Force voted to recommend the adoption of this specification.
This presentation introduced Vortex by means of a running example. Throughout the presentation we will show how Vortex makes it easy to build a micro-blogging platform a la Twitter.
OpenSplice DDS enables seamless, timely, scalable and dependable data sharing between distributed applications and network-connected devices. Its technical and operational benefits have propelled adoption across multiple industries, such as Defence and Aerospace, SCADA, Gaming, Cloud Computing, Automotive, etc.
If you want to learn about OpenSplice DDS or discover some of its advanced features, this webcast is for you!
In this two-parts webcast we will cover all the aspects tied to architecting and developing OpenSplice DDS systems. We will look into Quality of Services, data selectors concurrency and scalability concerns.
We will present the brand-new, and recently finalized, C++ and Java APIs for DDS, including examples of how this can be used with C++11 features. We will show how, increasingly popular, functional languages such as Scala can be used to efficiently and elegantly exploit the massive HW parallelism provided by modern multi-core processors.
Finally we will present some OpenSplice specific extensions for dealing very high-volumes of data – meaning several millions of messages per seconds.
This document provides an overview of Morphia, a Java object mapping library for MongoDB. It discusses Morphia's advantages over using raw MongoDB drivers, including type safety and the ability to work with POJOs rather than generic maps. Key features covered include annotation-based mapping of entities to collections, lifecycle callbacks, queries, updates, and support for relationships and object graphs. The document aims to demonstrate how Morphia simplifies common data access patterns while retaining performance.
The Uniface Lectures are an ongoing series of free monthly technical webinars that cover a wide range of useful topics. In this edition of the Lectures webinar on Application & Infrastructure Security - JSON Web Tokens we cover the following main topics:
• The JWT standard
• Applying JWT to Uniface
• Uniface technology to support JWT
• Sample application of JWT
• And more…
Session video recording is on: youtube.com/unifacesme
Webinar video recording archive: go.uniface.com/Lectures-page
HFile: A Block-Indexed File Format to Store Sorted Key-Value PairsSchubert Zhang
HFile is a mimic of Google’s SSTable. Now, it is available in Hadoop HBase-0.20.0. And the previous releases of HBase temporarily use an alternate file format – MapFile, which is a common file format in Hadoop IO package. I think HFile should also become a common file format when it becomes mature, and should be moved into the common IO package of Hadoop in the future.
This document discusses Last.fm's use of HFiles outside of HBase. It summarizes tests performed comparing Last.fm's original plain text file format to a new binary format based on HFiles. The HFile format reduced file size by 80% and query times by over 90%. Last.fm is moving its chartserver data storage to HBase to address indexing slowness and allow different teams to use different NoSQL systems. The document also advertises two open data scientist positions at Last.fm.
Formalizing (Web) Standards: An Application of Test and ProofAchim D. Brucker
Most popular technologies are based on informal or semiformal standards that lack a rigid formal semantics. Typical examples include web technologies such as the DOM or HTML, which are defined by the Web Hypertext Application Technology Working Group (WHATWG) and the World Wide Web Consortium (W3C). While there might be API specifications and test cases meant to assert the compliance of a certain implementation, the actual standard is rarely accompanied by a formal model that would lend itself for, e.g., verifying the security or safety properties of real systems.
Even when such a formalization of a standard exists, two important questions arise: first, to what extend does the formal model comply to the standard and, second, to what extend does the implementation comply to the formal model and the assumptions made during the verification? In this paper, we present an approach that brings all three involved artifacts - the (semi-)formal standard, the formalization of the standard, and the implementations - closer together by combining verification, symbolic execution, and specification based testing.
The document describes the structure and format of blocks in a key-value store. It outlines the header, data, leaf index, meta, and trailer blocks. The header includes metadata like the block type and sizes. Data blocks contain compressed and uncompressed key-value entries. Leaf index blocks point to data blocks and include offsets. Meta blocks store metadata indexes. The trailer contains version and load-on-open metadata.
XML Technologies for RESTful Services Developmentruyalarcon
This document discusses XML technologies for developing RESTful services. It begins by outlining EMC's motivation for establishing an integration architecture based on REST principles. The document then covers key REST principles like identifying resources with URIs and using a uniform interface. It describes implementing RESTful services using JAX-RS and binding operations to XProc pipelines. The framework supports developing domain-specific RESTful APIs that address all four REST principles through the use of XML, XQuery, XSLT, and an XML database. Hypermedia is added through XSLT transformations, and the framework measures up well against JAX-RS in addressing REST principles.
The document discusses the Document Object Model (DOM), which provides a programming interface that allows XML documents to be accessed and manipulated as objects in a tree structure. DOM represents each node of the XML tree as an object with properties and behavior for processing the XML. The document outlines how DOM can be used to navigate an XML document's structure, report information from nodes, and modify the XML document. It also provides examples of using DOM to parse an XML file and display its tree structure.
Objects arent records with byte codes on the sideMichael Caruso
The document discusses traditional views of objects as records with methods and argues this approach does not scale well for business objects. It advocates establishing principles like generality and comprehensibility from application and technology perspectives. Collections and queries are embedded throughout applications, so the technology needs a collection-centric theory of operation to achieve scalability. Detail at the collection level is as important as summary information.
This document discusses the DDS-PSM-Cxx standard for implementing the Data Distribution Service (DDS) in C++. It provides an overview of the key concepts in DDS including domains, topics, publishers, subscribers, datawriters and datareaders. It also describes content filtering, queries, instances and state-based selection. The document notes that simd-cxx influenced DDS-PSM-Cxx and that simd-cxx v1.0 implements this standard. It provides references to related DDS implementations and APIs.
RDF, OData, and GData are data protocols with differences in their logical models, physical implementations, and intents. RDF uses a graph/EAV logical model and is intended for data syndication and linking on the web. It has open extensibility through RDFS/OWL. OData uses a graph/EAV model grounded in AtomPub and EDM, and is intended for data publishing and syndication. It reuses some Microsoft types and namespaces. GData has an unclear logical model behind Google services, and is intended for Google cloud data publishing through AtomPub/JSON formats only.
Object Graph Mapping with Spring Data Neo4j 3 - Nicki Watt & Michael Hunger @...Neo4j
Nicki and Michael have recently been working together on the project to develop/upgrade the Spring Data Neo4j 3 (SDN) library to take advantage of some of the latest Neo4j 2.0 features. This talk takes a look at what can be expected of the new framework, and how it can be used to help model various different use cases with a simple Java domain model backed by a Neo4j database.
[HES2013] Nifty stuff that you can still do with android by Xavier MartinHackito Ergo Sum
Fact: It is generally assumed that reverse engineering of Android applications is much easier than on other architectures. Static program analysis is the way to go.You can go back and forth between application and bytecode assembly without much hassle.
Reality: Few techniques are willing to make their comeback on this platform, namely dynamically code loading and self modifying code : bringing the fun back ! Source code examples will be shown, with step by step explanation.
https://www.hackitoergosum.org
The document provides an overview of Hibernate including:
1) An introduction to Hibernate and its features like object/relational mapping and caching.
2) Reasons for using Hibernate like reducing SQL statements and handling associations.
3) Steps to configure and use Hibernate in an application including adding JAR files, configuring Hibernate.cfg.xml, setting the SQL dialect, and mapping classes to tables.
4) A simple case study demonstrating using Hibernate for CRUD operations, ID generation, queries, and caching.
5) Details on transactions, criteria queries, and the two levels of caching in Hibernate.
This document discusses NoSQL databases and frameworks for using them with Java applications. It summarizes the advantages of NoSQL databases, different types including key-value, column-oriented, document and graph databases. Frameworks like JPA are challenging to use with NoSQL due to differences from SQL databases. Other options like Spring Data and GORM aim to provide a more native interface for NoSQL but support a limited number of database types. Choosing the right approach depends on the specific use case and database.
Social Media Revolutions: How to communicate in the web 2.0 worldAlastair Smith
The document discusses strategies for effective communication on social media platforms. It emphasizes the importance of understanding the audience and their interests, sharing engaging content that takes advantage of each platform's capabilities, and being prepared to respond to both positive and negative feedback. The key is listening to the audience and providing value to them rather than just promoting oneself or one's company.
A brief presented by LT Lesley Lykins, Deputy for Emerging Media integration for the Department of Navy Office of Information, to the American Legion National Conference.
Extensible and Dynamic Topic Types for DDSRick Warren
Presentation to a Technical Meeting of the Object Management Group (OMG) describing a revised response to an RFP for improvements to the DDS type system in December 2009.
This presentation "replaces" my earlier presentation http://www.slideshare.net/rickbwarren/extensible-and-dynamic-topic-types-for-dds.
Extensible and Dynamic Topic Types for DDSRick Warren
Presentation to the OMG MARS Task Force from March of 2010 on the "Extensible and Dynamic Topic Types for DDS" (DDS-XTypes) specification. Following this presentation, the Task Force voted to recommend the adoption of this specification.
This presentation introduced Vortex by means of a running example. Throughout the presentation we will show how Vortex makes it easy to build a micro-blogging platform a la Twitter.
OpenSplice DDS enables seamless, timely, scalable and dependable data sharing between distributed applications and network-connected devices. Its technical and operational benefits have propelled adoption across multiple industries, such as Defence and Aerospace, SCADA, Gaming, Cloud Computing, Automotive, etc.
If you want to learn about OpenSplice DDS or discover some of its advanced features, this webcast is for you!
In this two-parts webcast we will cover all the aspects tied to architecting and developing OpenSplice DDS systems. We will look into Quality of Services, data selectors concurrency and scalability concerns.
We will present the brand-new, and recently finalized, C++ and Java APIs for DDS, including examples of how this can be used with C++11 features. We will show how, increasingly popular, functional languages such as Scala can be used to efficiently and elegantly exploit the massive HW parallelism provided by modern multi-core processors.
Finally we will present some OpenSplice specific extensions for dealing very high-volumes of data – meaning several millions of messages per seconds.
OpenSplice DDS enables seamless, timely, scalable and dependable data sharing between distributed applications and network-connected devices. Its technical and operational benefits have propelled adoption across multiple industries, such as Defence and Aerospace, SCADA, Gaming, Cloud Computing, Automotive, etc.
If you want to learn about OpenSplice DDS or discover some of its advanced features, this webcast is for you!
In this two-parts presentation we will cover most of the aspects tied to architecting and developing OpenSplice DDS systems. We will look into Quality of Services, data selectors concurrency and scalability concerns.
We will present the brand-new, and recently finalized, C++ and Java APIs for DDS, including examples of how this can be used with C++11 features. We will show how, increasingly popular, functional languages such as Scala can be used to efficiently and elegantly exploit the massive HW parallelism provided by modern multi-core processors.
Finally we will present some OpenSplice specific extensions for dealing very high-volumes of data – meaning several millions of messages per seconds.
Study: The Future of VR, AR and Self-Driving CarsLinkedIn
We asked LinkedIn members worldwide about their levels of interest in the latest wave of technology: whether they’re using wearables, and whether they intend to buy self-driving cars and VR headsets as they become available. We asked them too about their attitudes to technology and to the growing role of Artificial Intelligence (AI) in the devices that they use. The answers were fascinating – and in many cases, surprising.
This SlideShare explores the full results of this study, including detailed market-by-market breakdowns of intention levels for each technology – and how attitudes change with age, location and seniority level. If you’re marketing a tech brand – or planning to use VR and wearables to reach a professional audience – then these are insights you won’t want to miss.
Java 5 PSM for DDS: Revised Submission (out of date)Rick Warren
Presentation given to the Object Management Group's MARS Task Force in September, 2010 about a proposal to improve the Java API for the OMG's Data Distribution Service (DDS). See also http://code.google.com/p/datadistrib4j/.
This presentation is obsoleted by a later one: http://www.slideshare.net/rickbwarren/java-psm-revisedsubmission2presentationmars20101222.
greenDAO is an ORM (object relational mapping) library that uses code generation to provide a higher level API for SQLite databases on Android. It generates Java classes from an entity model that allows reading and writing objects to the database instead of using raw SQL. This improves productivity by handling common database tasks like queries and transactions. The generated code avoids reflection for better performance compared to annotation-based ORMs. The library focuses on optimization through techniques like custom cursors, entity caching, and bulk operations to achieve high performance suitable for Android.
This document discusses REST and how to implement it simply using Java. It introduces REST principles like resources, uniform interface, hypermedia as the engine of application state. It then discusses Java frameworks like JAX-RS that make REST easy using annotations and POJOs. It provides an example of implementing a RESTful time report service using JAX-RS with request mapping, path parameters, entity providers, and exception handling. It notes some limitations of JAX-RS like weak link and caching support.
This document provides an overview of REST and how to implement it using Java frameworks like JAX-RS. It discusses REST constraints like using resources and uniform interfaces. It shows how to create RESTful services in Java using JAX-RS annotations to map URLs to methods and handle requests and responses. The document also discusses writing custom entity providers to support additional media types and some limitations of JAX-RS implementations.
Project Coin introduced several new features to Java 7 including diamond syntax for type inference, multi-catch exception handling, try-with-resources for cleaner resource management, strings in switch statements, and underscores in numeric literals. NIO.2 expanded non-blocking I/O with new file system APIs and WatchService for monitoring directories. Performance was improved through parallel array operations and other concurrency updates. Java 8 will include lambda expressions and new date/time APIs.
The outline of the presentation (presented at NDC 2011, Oslo, Norway):
- Short summary of OData evolution and current state
- Quick presentation of tools used to build and test OData services and clients (Visual Studio, LinqPad, Fiddler)
- Definition of canonical REST service, conformance of DataService-based implementation
- Updateable OData services
- Sharing single conceptual data model between databases from different vendors
- OData services without Entity Framework (NHibernate, custom data provider)
- Practical tips (logging, WCF binding, deployment)
Hibernate is an object-relational mapping tool that allows Java objects to be persisted to a relational database. It provides transparent persistence by handling all database operations like insert, update, delete, and retrieval. Hibernate sits between the Java application and database, mapping objects to database tables and allowing developers to work with objects rather than directly with SQL statements. Configuration files define the mappings between Java classes and database tables. Hibernate uses these mappings to automatically generate SQL to load and store objects.
This document provides an overview and introduction to Muduo, a C++ network programming library for Linux. Some key points:
- Muduo is a non-blocking, event-driven, multi-core ready C++ network library that aims to provide high performance and modern features.
- The document discusses challenges with network programming using sockets APIs directly and how a library like Muduo can help abstract away complexity.
- It covers core concepts in non-blocking and event-driven network programming used by Muduo like the event loop, callbacks, and lifetime management of connection objects.
- Examples are provided of how Muduo implements patterns like chat servers and comparisons are made to other libraries
The document discusses work done by the International Press Telecommunications Council (IPTC) to develop a standardized JSON format for representing news and other media content. It describes considering existing XML standards, drafting candidate JSON structures, and testing representations of properties like places, subjects and text markup in JSON. Based on lessons learned, the IPTC plans to publish an initial News in JSON recommendation, seek feedback, and vote on a 1.0 specification at an upcoming meeting.
Desktop, Embedded and Mobile Apps with Vortex CaféAngelo Corsaro
In the past few years we have been experiencing an amazing proliferation of mobile and embedded platforms. Contemporary developers are increasingly faced with the challenge of writing applications that can run on desktop, mobile (e.g. Android), and on low-cost embedded platforms (e.g. Raspberry-Pi and Beaglebone). This is causing a rejuvenated interest in the Java platform as the mean to achieve the holy grail of write-once and run-everywhere. With the availability of Java environments supporting almost any kind of device in several different form factors, the missing element to the picture is an effective way of enabling communication between them.
Vortex Café is a pure Java implementation of the OMG Data Distribution Service (DDS) that enables seamless, efficient and timely data sharing across many-core machines, mobile and embedded devices.
This presentation will (1) introduce the main abstractions provided by Vortex Café, (2) provide an overview of its architecture and explain how it exploits Staged Event Driven Architectures to optimize its runtime depending of the target hardware, (3) provide an overview of the typical performance delivered by Vortex Café, and (3) get you started developing distributed Java and Scala applications with Vortex Café.
In the past few years we have experienced an amazing proliferation of mobile and embedded platforms. Contemporary developers are increasingly being faced with the challenge of writing applications that can run on desktop, mobile (e.g. Android and iOS), and on low-cost embedded platforms (e.g. Raspberry-Pi and Beaglebone). This is causing a rejuvenated interest in the Java platform as a means to achieve the holy grail of write-once and run-everywhere. With the availability of Java environments supporting almost any kind of device in several different form factors, the missing element of the picture is an effective way of enabling communication between them.
Vortex Café is a pure Java implementation of the OMG Data Distribution Service (DDS) that enables seamless, efficient and timely data sharing across multi-core machines, mobile and embedded devices.
This presentation will (1) introduce the main abstractions provided by Vortex Café, (2) provide an overview of its architecture and explain how it exploits Staged Event Driven Architectures to optimize its runtime behavior depending on the target hardware, (3) provide an overview of the typical performance delivered by Vortex Café, and (4) get you started developing distributed Java and Scala applications with Vortex Café.
The document proposes an IT infrastructure for Shiv LLC, a company with locations in Los Angeles, Dallas, and Houston. It recommends implementing an Active Directory domain to enable communication and file sharing across the three locations. A centralized file server would store common files and applications. Each location would have its own local area network, connected to the other sites and to the internet via VPN. Firewalls, antivirus software, and regular backups would help secure the network and protect company data. The design allows for future growth and expansion as the company scales up.
Abstract:
Jini has served Orbitz well, but at the cost of tight coupling due in part to shared code and Java™ platform serialization rules. To improve agility, Orbitz is migrating to a RESTful Web services architecture using protocol buffers to define message formats. The result is loosely coupled services with autonomous lifecycles supporting evolvability and innovative mashup-style development.
This session is intended for experienced architects and tech leads who are familiar with distributed systems and data encoding methods.
It covers
• Using document schemas to constitute language-neutral contracts
• Using standard HTTP plumbing and intermediaries
• Implementing a reverse proxy for request routing based on RESTful URLs
• Applying OLAs for governance and service isolation
• Writing automated service layer tests to ensure backward compatibility
Boost Development With Java EE7 On EAP7 (Demitris Andreadis)Red Hat Developers
JBoss EAP7 brings support for the most recent industry standards and technologies, including Java EE7, the latest edition of the premier enterprise development standard. This session will provide an overview of the major additions to Java EE7, and how your team can use these capabilities on the advanced EAP7 runtime to produce better applications with less code.
This document provides an overview of the key differences between Play Framework versions 1.0 and 2.1. It notes that Play 2.1 introduces support for Scala and Java, uses dynamic compilation via SBT, includes error reporting for JavaScript, and is designed for long browser connections. It also summarizes how to work with templates, HTML forms, databases, and JSON in Play 2.1 applications.
This presentation discusses the define.xml format for providing metadata about clinical study data. It covers regulatory requirements for metadata, sections of define.xml including variable metadata, computational algorithms, and code lists. It also reviews the process flows for creating SDTM and ADaM datasets and define.xml files at Accovion. Definitions and examples of XML basics are provided to explain the machine-readable format.
This document provides an overview of Apache Tamaya, an open source project that aims to define a common API for accessing configuration in Java applications in a flexible, pluggable, and extensible way. It discusses the history and objectives of Tamaya, core concepts like the configuration interface and property sources, and various extensions. The document also presents use cases around areas like accessing configuration similarly across different runtimes, reducing redundancy, enforcing configuration policies, and integrating enterprise configurations. Finally, it demonstrates Tamaya's configuration injection and template capabilities.
As with most Java technologies, building applications with JPA or JAXB is straightforward, but performance tuning is something that takes experience. In this session we will identify key performance tuning opportunities and techniques and how the tooling provided within Eclipse and in EclipseLink can be used to identify issues and configure solutions. We will discuss optimizing the cache, queries and mappings along with optimization features available for distributed applications.
Similar to Java 5 PSM for DDS: Initial Submission (out of date) (20)
A smattering of brief intermediate topics regarding the Git version control system, including branching strategies, interactive rebasing, and migration from Subversion.
Building Scalable Stateless Applications with RxJavaRick Warren
RxJava is a lightweight open-source library, originally from Netflix, that makes it easy to compose asynchronous data sources and operations. This presentation is a high-level intro to this library and how it can fit into your application.
Letters from the Trenches: Lessons Learned Taking MongoDB to ProductionRick Warren
eHarmony moved one family of business-critical back-end applications to MongoDB several months ago. In this presentation, I discuss some of the important lessons we learned along the way about how to provision, scale, manage, and troubleshoot MongoDB.
This document discusses patterns of data distribution that are commonly used when building distributed systems and applications. It identifies three main patterns: publish-subscribe, point-to-point, and request-reply. The document argues that middleware platforms typically implement these patterns in a rigid way, whereas a better approach is for platforms to be built using fundamental "super-patterns" that can be constrained or composed to derive the common patterns. This allows platforms to be more flexible and performant while still providing familiar patterns to application developers. The document also discusses challenges for platform builders in areas like system architecture, performance, and application interfaces.
Engineering Interoperable and Reliable SystemsRick Warren
The features of a communication technology that yield the properties of interoperability and reliability can be visualized in layers: technical (at the level of bytes), syntactic (at the level of messages), semantic (at the level of data, i.e. what the messages refer to), and so on. Real-world systems require at least data-level interoperability and reliability. The question is: will you acquire something that already supports those capabilities, or will you build it atop something that doesn't? This talk compares and contrasts DDS and AMQP as technology exemplars in each category.
Scaling DDS to Millions of Computers and DevicesRick Warren
I gave this presentation at an Object Management Group (OMG) workshop in Arlington, VA in March, 2010. It describes some of the concerns that will impact DDS as it is scaled to very large, geographically distributed systems. It also describes possible ways these challenges can be addressed.
This presentation gives a brief, semi-technical introduction to Data Distribution Service (DDS) technology from the Object Management Group. The focus is on the business benefits of the technology generally, not on RTI's implementation in particular.
Java 5 Language PSM for DDS: Final SubmissionRick Warren
This presentation describes the specification "Java 5 Language PSM for DDS." It was given to the MARS Task Force on Tuesday, December 7, 2010. The specification was recommended for adoption later in the week. The specification improves code portability, usability, and performance for applications that use Data Distribution Service (DDS) technology. See also http://code.google.com/p/datadistrib4j/.
Presentation from September, 2010 about the RTI proposal to improve the C++ API for the OMG's Data Distribution Service specification (DDS). See also http://code.google.com/p/dds-psm-cxx/.
Large-Scale System Integration with DDS for SCADA, C2, and FinanceRick Warren
Presentation to the OMG Real-Time Workshop in May 2010 on system integration patterns, especially (but not exclusively) with respect to OMG Data Distribution Service (DDS) technology.
Data-Centric and Message-Centric System ArchitectureRick Warren
Presentation from April, 2010 summarizing the principles of data-centric design and how they apply to DDS technology. Message-centric design is presented by way of contrast.
Easing Integration of Large-Scale Real-Time Systems with DDSRick Warren
Webcast (sorry, audio not included) on system integration design patterns from July of 2010 pertaining mostly (but not exclusively) to Data-Distribution Service (DDS) technology.
Presentation to a Technical Meeting of the Object Management Group (OMG) proposing the issuance of an RFP for an improved Java API for DDS in December 2009. Following this presentation, the RFP was voted for issuance.
This presentation has been superseded by later ones on the same subject.
Presentation to the Robotics Task Force of the Object Management Group (OMG) introducing the members to the Data Distribution Service (DDS), another OMG-standard technology.
Extensible and Dynamic Topic Types For DDS (out of date)Rick Warren
Presentation to a Technical Meeting of the Object Management Group (OMG) describing a revised response to an RFP for improvements to the DDS type system in September 2009.
This presentation is superseded by later ones on the same subject.
Proposed Java 5 API for DDS (out of date)Rick Warren
Presentation to a Technical Meeting of the Object Management Group (OMG) proposing the issuance of an RFP for an improved Java API for DDS in September 2009.
This presentation has been superseded by more recent ones on the same subject.
AI 101: An Introduction to the Basics and Impact of Artificial IntelligenceIndexBug
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
Best 20 SEO Techniques To Improve Website Visibility In SERPPixlogix Infotech
Boost your website's visibility with proven SEO techniques! Our latest blog dives into essential strategies to enhance your online presence, increase traffic, and rank higher on search engines. From keyword optimization to quality content creation, learn how to make your site stand out in the crowded digital landscape. Discover actionable tips and expert insights to elevate your SEO game.
Ocean lotus Threat actors project by John Sitima 2024 (1).pptxSitimaJohn
Ocean Lotus cyber threat actors represent a sophisticated, persistent, and politically motivated group that poses a significant risk to organizations and individuals in the Southeast Asian region. Their continuous evolution and adaptability underscore the need for robust cybersecurity measures and international cooperation to identify and mitigate the threats posed by such advanced persistent threat groups.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
Webinar: Designing a schema for a Data WarehouseFederico Razzoli
Are you new to data warehouses (DWH)? Do you need to check whether your data warehouse follows the best practices for a good design? In both cases, this webinar is for you.
A data warehouse is a central relational database that contains all measurements about a business or an organisation. This data comes from a variety of heterogeneous data sources, which includes databases of any type that back the applications used by the company, data files exported by some applications, or APIs provided by internal or external services.
But designing a data warehouse correctly is a hard task, which requires gathering information about the business processes that need to be analysed in the first place. These processes must be translated into so-called star schemas, which means, denormalised databases where each table represents a dimension or facts.
We will discuss these topics:
- How to gather information about a business;
- Understanding dictionaries and how to identify business entities;
- Dimensions and facts;
- Setting a table granularity;
- Types of facts;
- Types of dimensions;
- Snowflakes and how to avoid them;
- Expanding existing dimensions and facts.
Taking AI to the Next Level in Manufacturing.pdfssuserfac0301
Read Taking AI to the Next Level in Manufacturing to gain insights on AI adoption in the manufacturing industry, such as:
1. How quickly AI is being implemented in manufacturing.
2. Which barriers stand in the way of AI adoption.
3. How data quality and governance form the backbone of AI.
4. Organizational processes and structures that may inhibit effective AI adoption.
6. Ideas and approaches to help build your organization's AI strategy.
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
GraphRAG for Life Science to increase LLM accuracyTomaz Bratanic
GraphRAG for life science domain, where you retriever information from biomedical knowledge graphs using LLMs to increase the accuracy and performance of generated answers
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.
Benefits of “close” instead of factory method:
Familiar from java.io, javax.jms
Can’t get it wrong by using wrong factory
Important to keep everything as interface or stateless abstract class:
Don’t constrain implementations
Don’t risk bugs
Context allows multiple DDS implementations (including multiple versions of the same impl.) to coexist.
Also allows implementations to be transparently unloaded when no longer used.
If you don’t care about the parameters, just use wildcard—less hassle than in C++.
If you do care, you can bind them to preserve type safety.
First, show how it works.
Then, show why it works that way.