The document discusses Oracle XML DB Repository and its features. It describes how the repository is based on XML standards and can store, consume, generate, and validate XML. It also supports resource manipulation using packages and views. Events and extensions are supported through XML configuration files and schemas. Use cases demonstrate how unstructured files can be stored and metadata extracted for additional processing and display.

1. Drag, Drop and other Stuff

2.  Mark D Drake
Senior Product Manager
Product: Oracle XML DB
Oracle HQ, USA
 Oracle 20+ years experience

3.  Marco Gralike
Principal Database Consultant
DBA; Specialized Oracle XML DB
AMIS Services BV, Holland
 Oracle experience since 1993
 Oracle ACE Director
 OakTable Member

4. XML DB Repository

5.  Based on XML Standards:
XPath V2 , XSLT V1 , XQuery V1 ,
XQuery Update (11.2.0.3) , XBRL (Extention)
 XML Handling
Stores, Consumes, Generates, Validates
 XDB Repository
HTTP(s), FTP & WebDAV
XDB Repository Events
 No Cost Option, Core database feature

6.  XDB Repository File / Folder (aka Resources)
 Resource manipulation
DBMS_XDB, DBMS_XDBRESOURCE
 Default XDB ACL Driven Security
 XDB Protocol Listener
 XDB Respository Events
 XML Schema awareness
 Extending XML Schema functionality

7.  XDB$RESOURCE
 XDBResource.xsd
 XMLType Table (Schema based XML Table)
 Access to XDB Repository
 WebDAV, FTP, HTTP(s)
 SQL, PL/SQL, NDWS
 PATH_VIEW, RESOURCE_VIEW
 Select, Update, Delete
 UNDER_PATH, EQUALS_PATH

8.  XML Schema: xdb$resource.xsd
 XMLType Table
 PATH_VIEW, RESOURCE_VIEW
 Non Schema based metadata in LOB
 Info about:
RESID, DisplayName, Owner, Creator, VersionID,
ChecktOut, CreationDate, ModifiedDate, SizeOn
Disk, ContentSize, ContentType, Comments, Char
acterSet, Etc…

9. Servlet ?
MIME Type?
Security ?
XML
Schema ?
XDB Event ?
Extention?

10. Use Case

11. Database FileServer 2 The MAX
Copy a FILE
to the Database

12. Event
MIME Event
Listener
Check Handler
XML Protocol
Server (Listener)

13. Extract
Move
File Info
Store in XDB
Repository

14. Extract File XDB File to
Content Server
Batch File to XDB
“Batch” Directory

15. Use Case

16. Database FileServer 2 The MAX
Copy a PICTURE
to the Database

17. Event
MIME Event
Listener
Check Handler
XML Protocol
Server (Listener)

18. Extract Store in
XML Table
Store in XDB
Repository

19. EXIF KML
Display in GUI,
Google Map

20. Methods at Work

21. Servlet ?
MIME Type?
Security ?
XML
Schema ?
XDB Event ?
Extention?

22.  XML Schema - xdbconfig.xsd
 Notepad, XMLSpy, PL/SQL
 Secured via WebDAV ACL (xdbadmin)
 Packages (among others):
 DBMS_XDB
▪ Caching, Session, Locking, Security behavior
▪ Enable HTTP/FTP, MIME, Encoding, Virtual Paths
▪ SERVLETS: NDWS, APEX, XDBUrifactory
 DBMS_EPG
▪ Creation off Database Access Descriptors

23. <xdbconfig>
<sysconfig>
<acl-max-age>15</acl-max-age>
<acl-cache-size>32</acl-cache-size>
<invalid-pathname-chars/>
<case-sensitive>true</case-sensitive>
<call-timeout>6000</call-timeout>
<max-link-queue>65536</max-link-queue>
<max-session-use>100</max-session-use>
<persistent-sessions>false</persistent-sessions>
<default-lock-timeout>3600</default-lock-timeout>
<xdbcore-log-level>0</xdbcore-log-level>
<resource-view-cache-size>1048576</resource…size>
<xdbcore-xobmem-bound>1024</xdbcore-xobmem-bound>
<xdbcore-loadableunit-size>16</xdbcore-……………size>
<acl-evaluation-method>ace-order</acl-ev……method>
</sysconfig>
</xdbconfig>

24. <servlet xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
<servlet-name>APEX</servlet-name>
<servlet-language>PL/SQL</servlet-language>
<display-name>APEX</display-name>
<plsql xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
<database-username>ANONYMOUS</database-username>
<default-page>apex</default-page>
<document-table-name>wwv_flow_file_objects$</doc…name>
<document-path>docs</document-path>
<document-procedure>
wwv_flow_file_mgr.process_download
</document-procedure>
<nls-language>american_america.al32utf8</nls-language>
<request-validation-function>
wwv_flow_epg_include_modules.authorize
</request-validation-function>
</plsql>
<security-role-ref>
<role-name>anonymousServletRole</role-name>
<role-link>anonymousServletRole</role-link>
</security-role-ref>
</servlet>

25. XML Schema XML Schema
XML Document
in XML ? Registered ?
Physical XMLType Shred XML into Update
Associated ? XMLType XDB$Resource

26. Methods at Work

27.  Event Listener
 Java Class, PL/SQL Package, Object Type
▪ A Package called: “HANDLE_XDB_EVENTS”
 Event Handlers
 Event handlers processes a single event
▪ Package procedures called
“handlePreCreate”, “handlePostCreate, “handlePreVersi
onControl”…
 Resource Configuration File
 The glue between Event Listener and Resources

28.  Render  UnLinkIn  UnCheckOut
 Create  UnLinkFrom  VersionControl
 Delete  Lock  UnLock
 Update  CheckIn  LinkTo
 LinkIn  CheckOut

29.  Create handlePreCreate
handlePostCreate
 Delete handlePreDelete
handlePostDelete
Render handleRender
Lock
handlePreLock
… handlePostLock
URL: XDBEvent XDBEventListener

31. Methods at Work

32.  Glue between Event Listener and Resource
 An XML File
 XML Schema - XDBResConfig.xsd
 Contains (among others):
 Events and Source (Event Listener)
 Path to “itself” (/public/myResFile.xml)
 Pre-conditions (XPATH on XDB$RESOURCE)
 Is assigned to a Resource (File/Folder)
 DBMS_RESCONFIG.AppendResConfig

33.  Move all files created by BATCH to…
 Extract Info from picture if extension GIF…
<pre-condition>
<existsNode>
<XPath>/Resource[Creator="BATCH"]</XPath>
</existsNode>
</pre-condition>
<pre-condition>
<existsNode>
<XPath>/Resource[ContentType="image/jpg"]</XPath>
</existsNode>
</pre-condition>

34. Holistic Approach

35. Servlet ?
MIME Type?
Security ?
XML
Schema ?
XDB Event ?
Extension?

36. Everyone is known with EXIF…

37. Jeffrey's EXIF Viewer

40. Camera Make and Model
Aperture, Shutter Speed, Focal Length
ISO Speed, Date Taken, Description
Geo-coding, Copyright Information
 EXIF XML Schema is pre-registered with XML
DB by Oracle MultiMedia
 Type ordsys.ordimage extracts EXIF
metadata document from a JPG image

41.  The following embedded image metadata
formats are supported by Oracle Multimedia:
 EXIF (JPEG/TIFF - JEIDA)
 IPTC-IIM (JPEG/TIFF – Adobe)
 XMP (GIF/JPEG/TIFF – Adobe/RDF)
http://www.adobe.com http://www.w3.org/RDF Wikipedia - EXIF

42. Oracle® Multimedia User's Guide 11g R2
Oracle Multimedia Metadata XML Schemas

45.  ENABLE_HIERARCHY_RESMETADATA

46.  Metadata defined using an XML Schema
 Metadata stored in a separate table
 Table includes hidden column RESID
 Enables join with RESOURCE_VIEW, PATH_VIEW
 Applications query and update metadata
directly
 Improved Indexing
 Metadata deleted when resource is deleted

47. Document MIME type JPG Event Listener?
EXIF EXIF Extended
Event Handler?
XML Schema? w/ USER XSD ?
Extract JPG Extract JPG Extract JPG
File info EXIF info USER metadata
XDB$Resource XMLType Table XMLType Table

48. Oracle XML DB Repository

49. • XML DB
- Beyond the Database, Fileserver Realm
• Imagination is your limit, e.g.:
- Extending “file” server with Text Search
- Extending “file” server with ETL functionality
• Extra options: database / fileserver interfacing
• Based on standards
• No cost option / all database versions

50.  URL: OTN XMLDB Sample Code
 XFILES Version 5
 Introduction to Oracle XML DB Repository Events
 Oracle XML DB-based Mashup with Google Earth
 Oracle XML DB Repository Features
 XDB Utilities and more…