alternative, rewritten version for the BGOUG conference

1. Drag, Drop and other Stuff

5. XML DB Repository

6.  Ever executed DBMS_XDB…?
dbms_xdb.SetHTTPPort(8080)
dbms_xdb.SetFTPPort(2100)

7.  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

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

9.  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

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

11. Use Case

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

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

14. Extract
Move
File Info
Store in XDB
Repository

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

16. Use Case

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

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

19. Extract Store in
XML Table
Store in XDB
Repository

20. EXIF KML
Display in GUI,
Google Map

21. Methods at Work

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

23.  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

24. <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>

25. <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$</document-…-
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
xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
<role-name>anonymousServletRole</role-name>
<role-link>anonymousServletRole</role-link>
</security-role-ref>
</servlet>

26. Methods at Work

27.  Event Listener
 Java Class, PL/SQL Package, Object Type
▪ E.g. a package called: “HANDLE_XDB_EVENTS”
 Event Handlers
 Event handlers processes a single event
▪ Package procedures called “handlePreCreate”,
“handlePostCreate, “handlePreVersionControl”…
 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. Servlet ?
MIME Type?
Security ?
XML
Schema ?
XDB Event ?
Extention?

33.  Glue between Event Listener and Resource
 An XML File
 XML Schema restricted: 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

34.  XML Schema: xdb$resource.xsd
 XMLType Table
 PATH_VIEW, RESOURCE_VIEW
 LOB Column (with file content)
 Non Schema based metadata in LOB
 Info about:
RESID, DisplayName, Owner, Creator, VersionID,
ChecktOut, CreationDate, ModifiedDate, SizeOnDisk,
ContentSize, ContentType, Comments, CharacterSet,
Etc…

35.  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>

36. Holistic Approach

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

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

39. Everybody knows EXIF…

40. Jeffrey's EXIF Viewer

43.  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

44.  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

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

49. Its about Time to wrap it Up

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

51. 1. EVENT LISTENER
• Package
2. EVENT HANDLERS
• Procedures in “Event Listener”
3. RESOURCE CONFIGURATION FILE
• XML File

52. • General File Stuff turns out to be XML then…
4. XML SCHEMA REGISTRATION
• dbms_xmlschema.register_schema
5. EXTRA USER DEFINED METADATA NEEDED
• dbms_xmlschema.enable_hierarchy_resm
etadata

53. • 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

54.  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…

55.  Blog posts about:
 Setting up logging in the XDB Repository
 Package template HANDLE_XDB_EVENTS
 Concepts & Howto’s for XDB Repository
 Automatically shred content out of Windows
Office (docx) into table columns
 References to XLSX examples of Marc Bleron and
Anton Scheffers