XQuery is a standardized language for combining documents, databases, Web pages and almost anything else. It is very widely implemented. It is powerful and easy to learn.
This document discusses XML query language XPath and navigation. It describes how XPath allows querying XML documents by addressing elements and text using a path-like notation. XPath expressions are evaluated based on a context node and node-set. The document also covers XPointer for pointing to specific data within XML documents, and how XPath can be used with the XML DOM and XPathNavigator class in .NET.
This document provides an introduction to querying XML documents using XPath and XQuery. It begins with an overview of XML and its tree structure. It then covers the basics of XPath, including path expressions and functions. XQuery is introduced as a more powerful query language that incorporates XPath and allows restructuring results. Examples are provided to demonstrate XPath and XQuery expressions for retrieving, filtering, joining, and aggregating data from XML documents. Built-in functions, sorting, and nested queries in XQuery are also discussed.
An introduction to the XPath XML query possibilities. In particular, there is a focus on the abbreviations that makes XPath efficient to use. A larger section is allocated to explain and illustrated the use of axes in XPath
This document discusses using SQL/XML on Oracle databases. It provides an overview and outlines how to:
1. Extract relational data from tables and represent it as XML using SQL/XML publishing functions
2. Store XML data in the database using the XML data type
3. Transform XML data back into relational tables
The examples show how to start with simple XML generation and build up to a well-formed XML document with headers, root elements, and XSLT references.
XPath is a language for selecting nodes in an XML document. It uses path expressions that navigate the hierarchical structure of XML. Path expressions select nodes or node-sets using steps, axes, predicates and wildcards. XPath is commonly used with XSLT to transform XML documents into other formats. It contains functions like position(), count(), and last() to retrieve information about nodes.
This document provides an agenda for a presentation on XML DOM functionality in .NET. The presentation covers loading XML data into an XmlDocument object, working with child nodes, retrieving nodes that match criteria using XPath expressions, selecting single nodes, and retrieving node attributes. It demonstrates these concepts using a sample XML file representing a grocery store inventory. The conclusion emphasizes that the XmlDocument class represents an entire XML document in memory and supports loading, reading, and writing XML data using DOM functionality.
XPath is a syntax for selecting parts of an XML document, similar to how file paths work in an operating system. It allows selecting elements, attributes, and text from an XML document. XPath uses paths containing axis, nodes, and predicates to navigate within an XML document. Common axes include child, parent, ancestor, descendant, following, and preceding. Functions, arithmetic expressions, and other features allow complex querying of XML documents.
This document discusses XML query language XPath and navigation. It describes how XPath allows querying XML documents by addressing elements and text using a path-like notation. XPath expressions are evaluated based on a context node and node-set. The document also covers XPointer for pointing to specific data within XML documents, and how XPath can be used with the XML DOM and XPathNavigator class in .NET.
This document provides an introduction to querying XML documents using XPath and XQuery. It begins with an overview of XML and its tree structure. It then covers the basics of XPath, including path expressions and functions. XQuery is introduced as a more powerful query language that incorporates XPath and allows restructuring results. Examples are provided to demonstrate XPath and XQuery expressions for retrieving, filtering, joining, and aggregating data from XML documents. Built-in functions, sorting, and nested queries in XQuery are also discussed.
An introduction to the XPath XML query possibilities. In particular, there is a focus on the abbreviations that makes XPath efficient to use. A larger section is allocated to explain and illustrated the use of axes in XPath
This document discusses using SQL/XML on Oracle databases. It provides an overview and outlines how to:
1. Extract relational data from tables and represent it as XML using SQL/XML publishing functions
2. Store XML data in the database using the XML data type
3. Transform XML data back into relational tables
The examples show how to start with simple XML generation and build up to a well-formed XML document with headers, root elements, and XSLT references.
XPath is a language for selecting nodes in an XML document. It uses path expressions that navigate the hierarchical structure of XML. Path expressions select nodes or node-sets using steps, axes, predicates and wildcards. XPath is commonly used with XSLT to transform XML documents into other formats. It contains functions like position(), count(), and last() to retrieve information about nodes.
This document provides an agenda for a presentation on XML DOM functionality in .NET. The presentation covers loading XML data into an XmlDocument object, working with child nodes, retrieving nodes that match criteria using XPath expressions, selecting single nodes, and retrieving node attributes. It demonstrates these concepts using a sample XML file representing a grocery store inventory. The conclusion emphasizes that the XmlDocument class represents an entire XML document in memory and supports loading, reading, and writing XML data using DOM functionality.
XPath is a syntax for selecting parts of an XML document, similar to how file paths work in an operating system. It allows selecting elements, attributes, and text from an XML document. XPath uses paths containing axis, nodes, and predicates to navigate within an XML document. Common axes include child, parent, ancestor, descendant, following, and preceding. Functions, arithmetic expressions, and other features allow complex querying of XML documents.
This document provides an introduction to XML Path Language (XPath), which is a syntax for locating information in an XML document. It describes the different node types in an XML document and XPath tree, such as element nodes, attribute nodes, and text nodes. It also explains some basic XPath concepts like axes, node tests, and location paths that allow navigating the XPath tree using steps separated by axes and node tests. Some examples of XPath functions and operators for manipulating node sets returned from location paths are also presented. Finally, it provides sample XML documents and uses XPath to select nodes and extract information from them.
XPath is a language for selecting parts of an XML document. It uses path expressions to navigate through elements and attributes, similar to a programming language. Path expressions use steps to select nodes, and can include predicates and wildcards. XPath also includes over 100 built-in functions for evaluating nodes, strings, numbers, and more. It is a standard for finding information in XML documents and a major component of XSLT.
XML documents can be represented and stored in memory as tree structures using models like DOM and XDM. XPath is an expression language used to navigate and select parts of an XML tree. It allows traversing elements and their attributes, filtering nodes by properties or position, and evaluating paths relative to a context node. While XPath expressions cannot modify the document, they are commonly used with languages like XSLT and XQuery which can transform or extract data from XML trees.
This document provides an overview of XPath, the XML query language. It defines key XPath terminology like nodes, axes, and path expressions. It explains how to navigate an XML document and select elements using absolute and relative paths with slashes. It also covers wildcards, brackets, and functions for selecting elements based on attributes, position, name length, and ancestry. Examples are included to demonstrate different XPath expressions.
XPath is a language for selecting nodes in an XML document. It uses path expressions to navigate within elements, attributes, and nodes. XPath syntax includes nodename, /, //, ., .., @, and axes like ancestor, child, and descendant to locate nodes. XPath expressions can be absolute, starting from the root, or relative from the current location. It also contains functions to select unknown nodes, test strings, and check if a node contains, starts with, or ends with a value.
This document provides an overview of query languages for XML, including XPath, XQuery, and XSLT. It describes the XPath/XQuery data model of sequences of items, including nodes for elements, attributes, and documents. It explains path expressions in XPath for navigating through an XML document to select nodes. It also covers FLWOR expressions in XQuery, which allow looping and conditional logic. Additional XQuery concepts discussed include predicates, comparisons, effective boolean values, and boolean operators. The document uses a sample XML document about bars and beers to illustrate many of these XML query language concepts.
This document discusses Java data types and variables. It begins by defining data types as sets of values with predefined characteristics. It then lists the default Java primitive data types (boolean, char, byte, short, int, long, float, double) along with their default sizes and values. Examples are provided to demonstrate the double and char data types. The document then discusses variables, describing how to declare them and the three types: local, instance, and static variables. It also covers dynamic initialization, default values, and visibility/scope. Finally, the document discusses type conversion and casting between incompatible types in Java.
The document discusses XML and related technologies:
1. XML is used to mark up data with user-defined tags and describes the structure of data. It is more flexible than HTML which uses predefined tags.
2. XML documents must follow basic rules like being well-formed with matching tags and properly nested elements.
3. XML can be validated using DTDs or XML Schema which define constraints and data types for elements.
XPath is a language for defining parts of an XML document. It allows you to locate and operate on elements and attributes using path expressions that work like URLs or file system directories. XPath contains functions for selecting nodes, evaluating expressions, and extracting information from XML documents. It is used by several XML standards and technologies like XSLT, XQuery, XML Schema, and Schematron. The document provides an introduction to XPath basics like selecting elements, using attributes and namespaces, and built-in functions for strings, numbers, and booleans. Additional resources are listed for learning more about XPath.
Slides of my presentations at ApacheCon EU 07, see http://www.eu.apachecon.com/program/talk/84, and at the Cocoon GetTogether 2007, see http://www.cocoongt.org/
This document discusses processing SPARQL queries using Java with ARQ. It demonstrates how to execute a SPARQL query on an ontology model, print the results, and analyze various aspects of the query such as retrieving result variables, analyzing query elements like triple patterns, and examining the prefix mappings and expressions. The document provides an overview of executing SPARQL queries programmatically using the ARQ processor for Jena.
This document discusses Java strings and string-related concepts in Java. It covers:
- How strings are implemented as objects in Java
- Creating strings using literals vs. the new keyword
- Common string methods like length(), charAt(), equals(), etc.
- Immutability of strings in Java
- Comparing strings using equals(), ==, and compareTo()
- String concatenation and splitting
- The StringBuffer class for mutable strings
- The StringTokenizer class for breaking strings into tokens
The document provides examples and explanations of key string-related topics in Java like object creation, comparison, mutability, and common methods. It aims to give an overview of working with strings as a
Object-oriented programming uses abstraction and encapsulation through abstract data types (ADTs). An ADT defines a data type and its interface independently of its implementation. This allows information hiding and modular program design. Common languages like C++, Java, and Ruby support ADTs through classes or modules, which package data with methods, support inheritance and polymorphism, and provide visibility control through private/public access specifiers. Parameterized ADTs allow a data type to work with different element types. Namespaces and packages provide separate scopes to avoid naming conflicts.
Exception handling in Java allows programs to gracefully deal with errors and unexpected conditions. There are two types of exceptions: checked exceptions which must be explicitly caught, and unchecked exceptions which do not need to be caught. The try-catch block is used to catch exceptions, where code that might throw an exception is placed in the try block and catch blocks handle specific exceptions. Finally blocks are always executed and can be used to perform cleanup tasks. Exceptions can also be explicitly thrown using the throw keyword or declared as thrown from methods using the throws clause.
This document provides an overview of SPARQL, the SPARQL Query Language. It begins by explaining that SPARQL is an RDF query language designed to query graphs of RDF data. It then describes some key aspects of SPARQL including that it is based on matching graph patterns against RDF graphs, supports basic graph patterns through triple patterns, and allows for implicit and explicit joins. The document provides examples of SPARQL queries and discusses features like select-from-where structure, blank nodes, and group patterns.
The SAX parser is an event-based XML parser that does not build a DOM tree. It reads XML documents sequentially and notifies registered handlers of parsing events like start elements, end elements, and character data. SAX is useful for large documents since it has a smaller memory footprint than DOM. Handlers implement callback methods to process events. The DefaultHandler class provides empty implementations of required handler interfaces.
Ch08 - Manipulating Data in Strings and Arraysdcomfort6819
This document summarizes techniques for manipulating strings and arrays in JavaScript. It discusses parsing strings, formatting strings using special characters, counting characters, finding and extracting characters and substrings, replacing characters, combining strings, comparing strings, and working with regular expressions. Key string methods like indexOf(), substring(), replace(), and slice() are covered. It also examines regular expression patterns and quantifiers for matching text.
The document introduces algorithms and data structures. It defines an algorithm as a collection of unambiguous instructions to solve a problem in a finite number of steps. Examples of algorithms provided include ones to calculate the sum of numbers, determine if a number is even or odd, sort elements, and calculate factorials. The document then discusses analyzing the efficiency of algorithms using time and space complexity. Common data structures like arrays, stacks, queues, linked lists, graphs, trees, tables and sets are described along with their basic operations. Asymptotic notations to describe an algorithm's time complexity such as Big O, Omega and Theta notation are also introduced.
This document provides an introduction to object-oriented programming concepts in Java, including data abstraction and encapsulation, inheritance, and polymorphism. It discusses how objects combine data and operations, and how data abstraction allows using an object's interface without knowing implementation details. Instance variables store an object's data, and constructors, accessors, and mutators are used to initialize, read, and modify this data. The document also covers class vs instance methods, wrappers that allow primitive types to be used like objects, and using files for input/output in Java.
XQuery - The GSD (Getting Stuff Done) languagejimfuller2009
One of the hidden gems of the XML technology milieu is XQuery ... even if XML is not your thing (for example you work only with JSON) I will show you how XQuery is especially adept and super fast in terms of pure web development. And if you do happen to have a lot of XML I will also demonstrate how this concise, small data orientated language can result in serious productivity gains over other programming languages. XQuery is available today on the server, in the browser (mobile devices) and large deployments in both commercial and open source environments.
This talk will present both anecdotal and evidence based analysis showing how using XQuery can result in quicker development times over other programming languages when applied to the right scenarios and will try to help give a starting point to those wishing to investigate this extremely powerful little language.
XQuery is a standardized query language for XML that is analogous to SQL for relational databases. XQuery queries are constructed using XPath expressions to navigate through XML documents and select nodes or values. Common XQuery functions include doc() to open XML documents, FLWOR expressions to iterate through nodes, and predicates to filter query results.
This document provides an introduction to XML Path Language (XPath), which is a syntax for locating information in an XML document. It describes the different node types in an XML document and XPath tree, such as element nodes, attribute nodes, and text nodes. It also explains some basic XPath concepts like axes, node tests, and location paths that allow navigating the XPath tree using steps separated by axes and node tests. Some examples of XPath functions and operators for manipulating node sets returned from location paths are also presented. Finally, it provides sample XML documents and uses XPath to select nodes and extract information from them.
XPath is a language for selecting parts of an XML document. It uses path expressions to navigate through elements and attributes, similar to a programming language. Path expressions use steps to select nodes, and can include predicates and wildcards. XPath also includes over 100 built-in functions for evaluating nodes, strings, numbers, and more. It is a standard for finding information in XML documents and a major component of XSLT.
XML documents can be represented and stored in memory as tree structures using models like DOM and XDM. XPath is an expression language used to navigate and select parts of an XML tree. It allows traversing elements and their attributes, filtering nodes by properties or position, and evaluating paths relative to a context node. While XPath expressions cannot modify the document, they are commonly used with languages like XSLT and XQuery which can transform or extract data from XML trees.
This document provides an overview of XPath, the XML query language. It defines key XPath terminology like nodes, axes, and path expressions. It explains how to navigate an XML document and select elements using absolute and relative paths with slashes. It also covers wildcards, brackets, and functions for selecting elements based on attributes, position, name length, and ancestry. Examples are included to demonstrate different XPath expressions.
XPath is a language for selecting nodes in an XML document. It uses path expressions to navigate within elements, attributes, and nodes. XPath syntax includes nodename, /, //, ., .., @, and axes like ancestor, child, and descendant to locate nodes. XPath expressions can be absolute, starting from the root, or relative from the current location. It also contains functions to select unknown nodes, test strings, and check if a node contains, starts with, or ends with a value.
This document provides an overview of query languages for XML, including XPath, XQuery, and XSLT. It describes the XPath/XQuery data model of sequences of items, including nodes for elements, attributes, and documents. It explains path expressions in XPath for navigating through an XML document to select nodes. It also covers FLWOR expressions in XQuery, which allow looping and conditional logic. Additional XQuery concepts discussed include predicates, comparisons, effective boolean values, and boolean operators. The document uses a sample XML document about bars and beers to illustrate many of these XML query language concepts.
This document discusses Java data types and variables. It begins by defining data types as sets of values with predefined characteristics. It then lists the default Java primitive data types (boolean, char, byte, short, int, long, float, double) along with their default sizes and values. Examples are provided to demonstrate the double and char data types. The document then discusses variables, describing how to declare them and the three types: local, instance, and static variables. It also covers dynamic initialization, default values, and visibility/scope. Finally, the document discusses type conversion and casting between incompatible types in Java.
The document discusses XML and related technologies:
1. XML is used to mark up data with user-defined tags and describes the structure of data. It is more flexible than HTML which uses predefined tags.
2. XML documents must follow basic rules like being well-formed with matching tags and properly nested elements.
3. XML can be validated using DTDs or XML Schema which define constraints and data types for elements.
XPath is a language for defining parts of an XML document. It allows you to locate and operate on elements and attributes using path expressions that work like URLs or file system directories. XPath contains functions for selecting nodes, evaluating expressions, and extracting information from XML documents. It is used by several XML standards and technologies like XSLT, XQuery, XML Schema, and Schematron. The document provides an introduction to XPath basics like selecting elements, using attributes and namespaces, and built-in functions for strings, numbers, and booleans. Additional resources are listed for learning more about XPath.
Slides of my presentations at ApacheCon EU 07, see http://www.eu.apachecon.com/program/talk/84, and at the Cocoon GetTogether 2007, see http://www.cocoongt.org/
This document discusses processing SPARQL queries using Java with ARQ. It demonstrates how to execute a SPARQL query on an ontology model, print the results, and analyze various aspects of the query such as retrieving result variables, analyzing query elements like triple patterns, and examining the prefix mappings and expressions. The document provides an overview of executing SPARQL queries programmatically using the ARQ processor for Jena.
This document discusses Java strings and string-related concepts in Java. It covers:
- How strings are implemented as objects in Java
- Creating strings using literals vs. the new keyword
- Common string methods like length(), charAt(), equals(), etc.
- Immutability of strings in Java
- Comparing strings using equals(), ==, and compareTo()
- String concatenation and splitting
- The StringBuffer class for mutable strings
- The StringTokenizer class for breaking strings into tokens
The document provides examples and explanations of key string-related topics in Java like object creation, comparison, mutability, and common methods. It aims to give an overview of working with strings as a
Object-oriented programming uses abstraction and encapsulation through abstract data types (ADTs). An ADT defines a data type and its interface independently of its implementation. This allows information hiding and modular program design. Common languages like C++, Java, and Ruby support ADTs through classes or modules, which package data with methods, support inheritance and polymorphism, and provide visibility control through private/public access specifiers. Parameterized ADTs allow a data type to work with different element types. Namespaces and packages provide separate scopes to avoid naming conflicts.
Exception handling in Java allows programs to gracefully deal with errors and unexpected conditions. There are two types of exceptions: checked exceptions which must be explicitly caught, and unchecked exceptions which do not need to be caught. The try-catch block is used to catch exceptions, where code that might throw an exception is placed in the try block and catch blocks handle specific exceptions. Finally blocks are always executed and can be used to perform cleanup tasks. Exceptions can also be explicitly thrown using the throw keyword or declared as thrown from methods using the throws clause.
This document provides an overview of SPARQL, the SPARQL Query Language. It begins by explaining that SPARQL is an RDF query language designed to query graphs of RDF data. It then describes some key aspects of SPARQL including that it is based on matching graph patterns against RDF graphs, supports basic graph patterns through triple patterns, and allows for implicit and explicit joins. The document provides examples of SPARQL queries and discusses features like select-from-where structure, blank nodes, and group patterns.
The SAX parser is an event-based XML parser that does not build a DOM tree. It reads XML documents sequentially and notifies registered handlers of parsing events like start elements, end elements, and character data. SAX is useful for large documents since it has a smaller memory footprint than DOM. Handlers implement callback methods to process events. The DefaultHandler class provides empty implementations of required handler interfaces.
Ch08 - Manipulating Data in Strings and Arraysdcomfort6819
This document summarizes techniques for manipulating strings and arrays in JavaScript. It discusses parsing strings, formatting strings using special characters, counting characters, finding and extracting characters and substrings, replacing characters, combining strings, comparing strings, and working with regular expressions. Key string methods like indexOf(), substring(), replace(), and slice() are covered. It also examines regular expression patterns and quantifiers for matching text.
The document introduces algorithms and data structures. It defines an algorithm as a collection of unambiguous instructions to solve a problem in a finite number of steps. Examples of algorithms provided include ones to calculate the sum of numbers, determine if a number is even or odd, sort elements, and calculate factorials. The document then discusses analyzing the efficiency of algorithms using time and space complexity. Common data structures like arrays, stacks, queues, linked lists, graphs, trees, tables and sets are described along with their basic operations. Asymptotic notations to describe an algorithm's time complexity such as Big O, Omega and Theta notation are also introduced.
This document provides an introduction to object-oriented programming concepts in Java, including data abstraction and encapsulation, inheritance, and polymorphism. It discusses how objects combine data and operations, and how data abstraction allows using an object's interface without knowing implementation details. Instance variables store an object's data, and constructors, accessors, and mutators are used to initialize, read, and modify this data. The document also covers class vs instance methods, wrappers that allow primitive types to be used like objects, and using files for input/output in Java.
XQuery - The GSD (Getting Stuff Done) languagejimfuller2009
One of the hidden gems of the XML technology milieu is XQuery ... even if XML is not your thing (for example you work only with JSON) I will show you how XQuery is especially adept and super fast in terms of pure web development. And if you do happen to have a lot of XML I will also demonstrate how this concise, small data orientated language can result in serious productivity gains over other programming languages. XQuery is available today on the server, in the browser (mobile devices) and large deployments in both commercial and open source environments.
This talk will present both anecdotal and evidence based analysis showing how using XQuery can result in quicker development times over other programming languages when applied to the right scenarios and will try to help give a starting point to those wishing to investigate this extremely powerful little language.
XQuery is a standardized query language for XML that is analogous to SQL for relational databases. XQuery queries are constructed using XPath expressions to navigate through XML documents and select nodes or values. Common XQuery functions include doc() to open XML documents, FLWOR expressions to iterate through nodes, and predicates to filter query results.
JavaOne 2016
JMS is pretty simple, right? Once you’ve mastered topics and queues, the rest can appear trivial, but that isn’t the case. The queuing system, whether ActiveMQ, OpenMQ, or WebLogic JMS, provides many more features and settings than appear in the Java EE documentation. This session looks at some of the important extended features and configuration settings. What would you need to optimize if your messages are large or you need to minimize prefetching? What is the best way to implement time-delayed messages? The presentation also looks at dangerous bugs that can be introduced via simple misconfigurations with pooled beans. The JMS APIs are deceptively simple, but getting an implementation into production and tuned correctly can be a bit trickier.
Oracle SOA Suite 11g Mediator vs. Oracle Service Bus (OSB)Guido Schmutz
With Oracle SOA Suite 11g the old Oracle ESB become the Mediator component. With that only one "real" service bus resides, the Oracle Serivce Bus (OSB), which has been taken over from BEA (used to be Aqualogic Service Bus).
Mediator and OSB have some overlapping funcitonality, like transformation, routing and filtering. The question automatically raised is of course when to use which component. This presentation shows the difference between the components, the functionality they provide and some typical use cases for both.
This document provides an overview of XQuery, including its data model, types, validation against XML Schema, core functions like filtering, mapping, and constructing new XML structures. It presents examples like retrieving book titles before 2000 and grouping them by author. The tutorial is intended to help readers understand XQuery expressions, types, processing model, and type system.
This document provides an overview of Linux command line essentials including shell script basics, variables, operators, loops, and functions. It covers topics such as the difference between CLI and GUI interfaces, what a kernel and shell are, defining variables and variable types, arithmetic, relational, boolean, and file test operators, while, for, and until loops, and creating reusable functions. The document is from edureka.co and serves as an introduction to common Linux shell scripting concepts.
This document provides an overview of the Laravel PHP framework. It discusses Laravel's history and evolution from version 1 to the current version 5.3. Key Laravel concepts are explained such as routing, controllers, models, views, Artisan commands, and architectural changes in version 5 like the directory structure and environment detection. Additional Laravel tools and resources are also mentioned like Laravel Elixir, Homestead, and Laracasts.
Fuel Up JavaScript with Functional ProgrammingShine Xavier
JavaScript is the lingua franca of web development for over a decade. It has evolved tremendously along with the Web and has entrenched in modern browsers, complex Web applications, mobile development, server-side programming, and in emerging platforms like the Internet of Things.
Eventhough JavaScript has come a long way, a reinforced makeover to it will help build concurrent and massive systems that handle Big Data, IoT peripherals and many other complex eco systems. Functional Programming is the programming paradigm that could empower JavaScript to to enable more effective, robust, and flexible software development.
These days, Functional Programming is at the heart of every new generation programming technologies. The inclusion of Functional Programming in JavaScript will lead to advanced and futuristic systems.
The need of the hour is to unwrap the underlying concepts and its implementation in the software development process.
The 46th edition of FAYA:80 provides a unique opportunity for the JavaScript developers and technology enthusiasts to shed light on the functional programming paradigm and on writing efficient functional code in JavaScript.
Join us for the session to know more.
Topics Covered:
· Functional Programming Core Concepts
· Function Compositions & Pipelines
· Use of JS in Functional Programming
· Techniques for Functional Coding in JS
· Live Demo
This document discusses JavaScript looping statements. It describes for, for...in, for...of, while, and do...while loops. For loops run statements a specified number of times or iterate over properties of an object. While and do-while loops run code while/until a condition is false. Examples are provided for each loop type to demonstrate their syntax and usage.
"In this session, Twitter engineer Alex Payne will explore how the popular social messaging service builds scalable, distributed systems in the Scala programming language. Since 2008, Twitter has moved the development of its most critical systems to Scala, which blends object-oriented and functional programming with the power, robust tooling, and vast library support of the Java Virtual Machine. Find out how to use the Scala components that Twitter has open sourced, and learn the patterns they employ for developing core infrastructure components in this exciting and increasingly popular language."
The document discusses the challenges and rewards of developing a large JavaScript application with over 120,000 lines of code. It describes the Xopus XML editor framework, including its object-oriented architecture, class loading system, and techniques for improving performance like asynchronous execution and lazy loading of components. The framework aims to provide an application development structure for JavaScript applications in a similar way that Java and C# frameworks work.
This document provides an introduction to the Clojure programming language. It discusses Clojure's four main aspects: functional programming, its basis in Lisp, running on the Java Virtual Machine, and support for concurrency. It provides examples and explanations of Clojure's functional style, homoiconic Lisp syntax, interoperability with Java, and approaches for managing concurrent state through vars, refs, atoms and agents. It also recommends tools for getting started with Clojure and links to additional learning resources.
This Edureka "Node.js Express tutorial" will help you to learn the Node.js express fundamentals with examples. Express.js is flexible and minimal node.js web application framework that provides robust set of features to develop mobile and web applications. It facilitates the rapid development of node.js applications. Below are the topics covered in this tutorial:
1) Why Express.js?
2) What is Express.js?
3) Express Installation
4) Express Routes
5) Express Middlewares
This document discusses jQuery selectors and DOM manipulation using jQuery. It begins with an introduction to jQuery, explaining that jQuery is a JavaScript library that simplifies HTML document traversal, event handling, animations and Ajax interactions. It then covers various jQuery selectors including element, ID, class and universal selectors. It provides examples of how to select and style elements using these selectors. The document also discusses jQuery's DOM manipulation methods for getting and setting attributes and traversing the DOM tree.
The document is a summer training report submitted by Saikat Das, who completed training in Developing Dynamic Web Application with MYSQL and PHP (Part A), and Introduction to Security and Ethical Hacking (Part B). For Part A, the training covered topics like installing WAMP, using PHP and MySQL to build dynamic websites, managing databases and queries. For Part B, the training discussed the importance of security, threats/attacks, hardening systems, and ethical hacking techniques. The report provides details of the course agenda, concepts, and commands covered during the training.
This document discusses using the Korat tool for automated testing of Java programs. It provides an overview of Korat and how it works. Korat takes a formal specification of a method including a precondition and postcondition. It then automatically generates test cases within given size bounds and executes the method on each test case to check correctness. The document explains the key components of Korat including imperative predicates to specify structural constraints, and finitizations to bound the input space. It provides examples using binary trees and heap arrays to illustrate how to write the predicates and finitizations needed for Korat to generate test cases.
The document summarizes the architecture and features of the Sedna XML database query executor. It provides a pipelined and efficient execution engine with optimizations like external sorting. It supports the full XQuery standard and has extensible interfaces for additional functions and connections to other databases. Benchmarks show Sedna outperforms competitors on common queries.
This document discusses callback functions in JavaScript. A callback function is a function passed into another function as an argument, which is then invoked inside the outer function to complete some kind of routine or action. Callback functions allow asynchronous code execution in JavaScript by performing tasks without blocking subsequent code from running. Common examples of callbacks include functions used in event handling and asynchronous operations like AJAX requests.
This document introduces Clojure for Java developers with little Clojure experience. It discusses why Clojure is a good option, what Clojure is, its core concepts like immutability and functional programming, and how to interact with Java from Clojure. It also provides an overview of managing Clojure projects and deploying Clojure applications to the cloud.
This document introduces Apache Flink and Apache Kafka for stream processing. It discusses how Flink provides high-throughput, low-latency stream processing with exactly-once semantics. It demonstrates using Flink's Table API and SQL to read data from a Kafka topic, apply a SQL query to filter and transform the data, and write the results to another Kafka topic. The code example shows how to define sources, sinks, and queries to build a simple real-time data pipeline with Flink and Kafka.
Create custom looping procedures in sql server 2005 tech republicKaing Menglieng
The document describes how to create custom looping stored procedures in SQL Server 2005. It shows how to create a helper stored procedure called sp_MSForEach_Helper that handles the looping logic. It then creates another stored procedure called sp_ForEachObject that allows passing commands to loop through and execute against different object types in a database using the helper procedure. The key steps are:
1. Create a helper stored procedure that handles the looping logic and command execution.
2. Create another stored procedure that allows passing commands and object types to loop through, and calls the helper procedure.
3. The stored procedures allow executing commands against multiple databases, tables or other objects with looping logic.
The Mayans Lost Guide to RxJava on AndroidFernando Cejas
This document provides an introduction and overview of RxJava. Some key points:
- RxJava is a library for composing asynchronous and event-based programs using observable sequences. It implements Reactive Extensions (ReactiveX) for the Java VM.
- Using RxJava can help address issues with concurrency, callbacks, and composing asynchronous operations in Java. It promotes a reactive style of programming.
- The core abstractions in RxJava are Observables (which emit notifications), Subscribers (which receive notifications), and Operators (which allow transformation and manipulation of observable sequences).
- Examples are provided of how to use RxJava with Clean Architecture, including reactive presenters, use cases that
Introduction to JDBC and database access in web applicationsFulvio Corno
Introduction to the JDBC standard and best practices for database access from Web Applications.
Materiale realizzato per il corso di Sistemi Informativi Aziendali del Politecnico di Torino - http://bit.ly/sistinfo
Introduction to JDBC and database access in web applications
XQuery - a technical overview
1. XQuery
A t e c h n i c a l O v e r v i e w
b y L o r e n C a h l a n d e r
A p r i l 2 3 , 2 0 1 1
2. XML Query
XQuery is a standardized language for
combining documents, databases, Web pages
and almost anything else. It is very widely
implemented. It is powerful and easy to
learn.
Loren Cahlander - 2011
3. Functional Programming
Functional programming, and in
particular purely functional
programming, attempts to minimize or
eliminate side effects, and is therefore
considered declarative.
Source: Wikipedia
http://en.wikipedia.org/wiki/Declarative_programming
4. Two Approaches to
Computation
1940s…
John von Neumann Alonzo Church
Manage state with a program counter. Make functions act like math functions.
Which is simpler? Which will scale to 10,000 CPUs?
Courtesy of Dan McCreary & Associates - 2010
http://www.danmccreary.com/training/xquery/Functional-Programming.pptx
5. Imperative vs. Functional
Imperative Programming Functional Programming
Focus on a discrete series Focus on independent
of sequential steps that functions that transform
update the state of a data with no regard to
system state management
Courtesy of Dan McCreary & Associates - 2010
http://www.danmccreary.com/training/xquery/Functional-Programming.pptx
6. Different Approaches
Imperative Programming Functional Programming
1.Parameters are data, not 1.Functions are used as
functions parameters to functions
2.Variables are changeable 2.Variables are immutable
3.Use of state to manage 3.Outputs only depend on
calculations the inputs
4.Any object can change 4.No side effects
the state of any other 5.Use of recursion
object at any time
5.Use of sequential steps
Courtesy of Dan McCreary & Associates - 2010
http://www.danmccreary.com/training/xquery/Functional-Programming.pptx
7. Different Thinking
Sequential Processing Parallel Processing
The output of any Each loop of a
step can be used in FLWOR statement is
the next step an independent
thread
Courtesy of Dan McCreary & Associates - 2010
http://www.danmccreary.com/training/xquery/Functional-Programming.pptx
8. Data Model
<p>
<q id="x7">The first q</q>
<q id="x8">The second q</q>
<q href="#x7">The third q</q>
</p>
Loren Cahlander - 2011
10. Built In Functions
Handling XML Schema datatypes
Used by XPath 2.0 and XQuery 1.0
Accessors Functions and Operators on Durations, Dates and Times
The Error Function Functions Related to QNames
The Trace Function Operators on base64Binary and hexBinary
Constructor Functions Operators on NOTATION
Functions and Operators on Numerics Functions and Operators on Nodes
Functions on Strings Functions and Operators on Sequences
Functions on anyURI Context Functions
Functions and Operators on Boolean Values
Loren Cahlander - 2011
11. Path Expressions
Find the first section of the chapter with the title
“Starry Night” of the document named “alpha.xml”:
document(“alpha.xml”)//chapter[title = “Starry Night”]/section[1]
Loren Cahlander - 2011
13. FLWORPronounced FLOWER
for var in expression
For and let clauses generate a list of
at posvar
variable bindings preserving document
, order.
let var := expression
Where applies a predicate, eliminating
some of the bindings. It is more
efficient to apply a predicate in the
where expression XPath expression before using a where
clause.
Order by changes the document order
,
based on the expression
ascending Return is executed for each surviving
order by expression
binding, generating an ordered list of
descending
output.
return expression
Loren Cahlander - 2011
14. Functions
(:~
URL Rewriting Module
Contains functions for all URL Rewriting needs across the entire site
:)
module namespace url = "http://exist-db.org/ns/url-rewriting/1.0";
declare function url:log-variables($params as element(params)) {
for $param in $params/param
let $name := string($param/@name)
let $value := $param/text()
return
util:log("DEBUG", concat("URL Rewriter: ", $name, ": ", $value))
};
Loren Cahlander - 2011
15. Conditionals
declare function dates:_processYear($year as xs:string?) as xs:string?
{
! if($year castable as xs:integer)
! then
! ! if(xs:integer($year) < 100)
! ! then
! ! ! if(xs:integer($year) > 50)
! ! ! then concat("19", xs:string(xs:integer($year)))
! ! ! else if(xs:integer($year) = 0)
! ! ! then "1900"
! ! ! else concat("20", string-pad("0", 2 - string-length($year)), $year)
! ! else if(xs:integer($year) >= 100 and xs:integer($year) < 200) (: 102 = 2002 in Java :)
! ! then xs:string(1900 + xs:integer($year))
! ! else if(xs:integer($year) > 9999)
! ! then "9999"
! ! else $year
! else $year
};
Loren Cahlander - 2011
17. XQuery Wikibook
FLWOR Expression Example
Motivation
You have a sequence of items and you want to create a report that contains these items.
Method
We will use a basic XQuery FLWOR expression to iterate through each of the items in a sequence. The five parts of a FLWOR expression are:
■ for - specifies what items in the sequence you want to select (optional)
■ let - used to create temporary names used in the return (optional)
■ where - limit items returned (optional)
■ order - change the order of the results (optional)
■ return - specify the structure of the data returned (required)
Here is a simple example of a FLWOR expression:
for $book in doc("catalog.xml")/books/book
let $title := $book/title/text()
let $price := $book/price/text()
where xs:decimal($price) gt 50.00
order by $title
return
<book>
<title>{$title}</title>
<price>{$price}</price>
</book>
This XQuery FLWOR expression will return all books that have a price over $50.00. Note that we have not just one but two let statements after the for loop.
We also add a where clauses to restrict the results to books over $50.00. The results are sorted by the title and the result is a new sequence of book items
with both the price and the title in them.
http://en.wikibooks.org/wiki/XQuery/FLWOR_Expression
18. XQDoc
Documentation Generation
(:~
: The controller for constructing the xqDoc HTML information for
: the specified library module. The following information for
: each library module will be generated.
: <ul>
: <li> Module introductory information</li>
: <li> Global variables declared in this module</li>
: <li> Modules imported by this module</li>
: <li> Summary information for each function defined in the module</li>
: <li> Detailed information for each function defined in the module</li>
: </ul>
:
: @param $uri the URI for the library module
: @param $local indicates whether to build static HTML link for offline
: viewing or dynamic links for real-time viewing.
: @return XHTML.
:)
define function print-module($uri as xs:string, $local as xs:boolean) as element()*
Loren Cahlander - 2011
19. XML Query Test Suite
The XML Query Test Suite (XQTS) is to show that the
actual specification can be implemented as written, and
to demonstrate interoperability. W3C does not test or
certify implementations.
Loren Cahlander - 2011
21. EXPath/EXQuery
EXQuery
(:~ Collaboratively Defining Open Standards for Portable XQuery Applications :)
EXQuery will define standards for -
● Extending XQuery for Application Development.
● Portable XQuery Applications.
EXQuery is -
● Open – everything is transparent and visible.
● Collaborative – anyone may join us.
● Community driven – standards from XQuery Application Developers.
...launching TODAY at XML Prague 2009 :-)
www.exquery.org
XML Prague 2009 Poster Session
Adam Retter
adam.retter@exquery.org
Loren Cahlander - 2011
22. XQuery 3.0
W3C Working Draft
group by clause in FLWOR Expressions
tumbling window and sliding window in FLWOR Expressions
count clause in FLWOR Expressions
allowing empty in 3.9.2 For Clause, for functionality similar to outer joins in SQL.
try/catch expressions
Dynamic function invocation
Inline functions
Private functions
Nondeterministic functions
Switch expressions
Computed namespace constructors
Output declarations
Annotations
Annotation assertions in function tests
Loren Cahlander - 2011
23. Documentation
XQuery 1.0: An XML Query Language (W3C Recommendation)
http://www.w3.org/TR/xquery/
XML Query (XQuery) 1.0 Requirements (W3C Working Group Note)
http://www.w3.org/TR/xquery-requirements/
XML Query 1.0 Use Cases (W3C Working Group Note)
http://www.w3.org/TR/xquery-use-cases/
Building a Tokenizer for XPath or XQuery (Joint Note)
http://www.w3.org/TR/xquery-xpath-parsing/
XQuery 3.0: An XML Query Language (W3C Working Draft)
http://www.w3.org/TR/xquery-30/
XQuery
xqDoc
http://xqdoc.org/index.html
Search Across a Variety of XML Data
By Priscilla Walmsley XML Query Test Suite
Publisher: O'Reilly Media
Released: March 2007 http://dev.w3.org/2006/xquery-test-suite/PublicPagesStagingArea/
EXPath/EXQuery
http://www.expath.org/
http://www.exquery.org/
Loren Cahlander - 2011