BGOUG 2012 - Drag & drop and other stuff - Using your database as a file server
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The document discusses Oracle XML DB Repository and its features. It describes how XML DB Repository stores, consumes, generates and validates XML. It can handle files and folders through various protocols like HTTP(s), FTP and WebDAV. It also supports versioning, XML schemas, and extending XML schema functionality. Events can be handled using event listeners and handlers. Security is provided through default ACLs. Files can be accessed through SQL, PL/SQL and other methods.
![ 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>](https://image.slidesharecdn.com/bgoug2012-dragdropandotherstuff-usingyourdatabaseasafileserver-121116081503-phpapp02/85/BGOUG-2012-Drag-drop-and-other-stuff-Using-your-database-as-a-file-server-35-320.jpg)
BGOUG 2012 - Drag & drop and other stuff - Using your database as a file server
- 1. Drag, Drop and other Stuff
- 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>
- 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$Resource
- 43. Camera Make and Model Aperture, Shutter Speed, Focal Length ISO Speed, Date Taken, Description Geo-coding, Copyright Information EXIF XML Schema is pre-registered with XML DB by Oracle MultiMedia Type ordsys.ordimage extracts EXIF metadata document from a JPG image
- 44. The following embedded image metadata formats are supported by Oracle Multimedia: EXIF (JPEG/TIFF - JEIDA) IPTC-IIM (JPEG/TIFF – Adobe) XMP (GIF/JPEG/TIFF – Adobe/RDF) http://www.adobe.com http://www.w3.org/RDF Wikipedia - EXIF
- 45. ENABLE_HIERARCHY_RESMETADATA
- 46. Metadata defined using an XML Schema Metadata stored in a separate table Table includes hidden column RESID Enables join with RESOURCE_VIEW, PATH_VIEW Applications query and update metadata directly Improved Indexing Metadata deleted when resource is deleted
- 47. Document MIME type JPG Event Listener? EXIF EXIF Extended Event Handler? XML Schema? w/ USER XSD ? Extract JPG Extract JPG Extract JPG File info EXIF info USER metadata XDB$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