Building High-Performance Enterprise XML Applications with Oracle Database 10g Mark Scardina Group Product Manager & XML Evangelist Oracle Corporation Session id: 40020

Why You Need XML  Expanding business – XML is widely accepted as the standard data exchange format for B2B, B2C and EAI applications  Moving legacy applications to the Internet – XML incorporates metadata with data facilitating cross platform data exchange  Building e-Business applications over the Internet – XML provides powerful data abstraction for transaction data management and exchange  Publishing content across media and device types – XML provides flexible content representations and easy transformations

Why XML Demands High Performance  Encapsulation of data increase payload size  Standards require character-based processing – XML Schema validation – XSLT stylesheet transformation  XSL transformations require expensive DOM  Content needs data-binding for application processing

Oracle XML Developer’s Kit 10g  High Performance Standards-based libraries and utilities to generate, manipulate, render and store XML  Includes: – XML Parser – XSLT Processor and XSLTVM – XML Schema Processor – XML Class Generators – XML Java Beans – XML SQL Utility – XSQL Servlet – SOAP Services – XML Pipeline Processor  Available for Java, C, and C++  Available in Servers and free of charge from OTN

W3C/JSR Standards Support Standard Version Language XMLXML Java, C/C XML Namespaces Java, C/C DOMDOM 1.0/2.0/3.0 SAX + Extensions Java, C/C++ 1.0/2.0 XSLT + XPath Java, C/C++ 1.0/2.0 XML Schema Java, C/C SOAPSOAPJava1.1 JAXPJAXP Java1.1 JAXBJAXB Java1.0

Oracle XDK 10g: XML to the Power of SQL  Build Oracle 10g XML OCI Applications – Directly access XMLType DOM  Utilize High Performance XSL Transformations – XSLT Compiler and Virtual Machine  Efficiently Generate Large XML documents – Stream-based retrieval  Speed XML Processing with Stream-based XML – One step XML validation and transformation

Build OCI XML DB Applications  New C APIs for working with XMLType  Unified development in/out of Oracle DB 10g – Common XML* C interfaces for XML and XMLType – Eliminates parsing and DOM construction  Fast and Efficient XML processing of DB data – Directly work with the XMLType DOM (XOB) – Eliminates serializing and reparsing

XDK Unified DOM C Code Sample /* Get an xml context */ params[0].name_ocixmldbparam = XCTXINIT_OCIDUR; params[0].value_ocixmldbparam = &dur; xctx = OCIXmlDbInitXmlCtx(envhp, svchp, errhp, params, 1); /* Parse a schema-based document */ if (!(doc = XmlLoadDom(xctx, &err, "buffer", lpxml_test_sch, "buffer_length", sizeof(tlpxml_test_sch)-1, "validate", TRUE, NULL))) /* Create some elements and add them to the document */ top = XmlDomGetDocElem(xctx, doc); foo = (xmlnode *) XmlDomCreateElem(xctx, doc, (oratext *) "FOO"); foo_data = (xmlnode *) XmlDomCreateText(xctx, doc, (oratext *) "data"); foo_data = XmlDomAppendChild(xctx, (xmlnode *) foo, (xmlnode *) foo_data); foo = XmlDomAppendChild(xctx, quux, foo);

Fast XSLT with Oracle XDK10g  XSLT Compiler and VM for C/C++ – Compile Stylesheets for execution in XSLTVM – Improved throughput up to 2.5x – Significant Reduction in Memory use  XSLT 2.0 Support and Optimizations in Java – Optimized Stylesheet compilation based on XML/XSL static analysis – Indexing eliminates expensive XPath navigation – Support for Grouping, Multiple Outputs, Character Mapping, Temp Trees and XSL functions

XSLT Compiler and Virtual Machine XML XSL XSLT Virtual Machine XSLT Compiler CSS SVG XML HTML WML

Throughput Performance (KB/s) Result File Size Oracle Oracle Oracle BrandX XSLTVM C Java Java xslbench1xslbench xslbench2xslbench xslbench3xslbench OverallOverall

XSLT Compiler/VM Code Sample xmlFile = (oratext*)argv[1]; xslFile = (oratext*)argv[2]; /* Create context ad initialize */ xctx = XmlCreate(&err, (oratext *) "sample", "data_encoding", "US-ASCII", NULL); comp = XmlXslCreateComp (xctx); vm = XmlXslVMCreate (xctx); /* Compile XSL stylesheet input file */ code = XmlXslCompileFile (comp, xslFile, NULL, XMLXSL_STRIPSPACE, &err); /* Transform XML input file */ len = XmlXslGetBytecodeLength (code, &err); err = XmlXslVMSetBytecodeBuffer (vm, code, len); err = XmlXslVMTransformFile (vm, xmlFile, NULL);

Efficiently Generate Large XML Docs  Print XML directly from SQL Queries  Print Large XML Documents and Result Sets  Easily print directly from SAX events  Extends XML SQL Utility in Oracle XDK 10g  Eliminates the need to create a DOM  No need to create SAX handlers

Efficiently Generate Large XML SQL Query JDBC 10g …… XML XSU StartDocument StartElement EndElement EndDocument Streaming

Performance Numbers Result Set File Size Memory (MB) Time (s) DOM/SAX DOM/SAX DOM/SAX DOM/SAX Result Set File Size Memory (MB) Time (s) DOM/SAX DOM/SAX DOM/SAX DOM/SAX 3K Bytes 3.72/ /34 300K Bytes 7.91/ /37 3M Bytes 37.8/ /37 30M Bytes ?/95.5 <100/37

SAX Print from Query Sample Code //Open a File and Initialize connection and SAX print OutputStream out = new FileOutputStream("out.xml"); DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver()); conn= DriverManager.getConnection(thinConn,”sh”,”sh”); XMLSAXPrintDriver sample = new XMLSAXPrintDriver(out); //init the OracleXMLQuery OracleXMLQuery qry = new OracleXMLQuery(conn,"select * from sales"); //Print the results qry.getXMLSAX(sample); sample.flush();

Streaming Single-step XML Processing  Create a stream-based XML integration app  Validate and Transform XML messages in a stream-based process  Utilize Oracle Streams 10g messaging support  Annotate XML Schema with mapping attributes  Easily and Efficiently support multiple schemas  Abstract application schema from input schemas future-proofing your application

Stream-based XML Processing SAX Query XML XSD User Applications XML Schema Processor

D E M O N S T R A T I O N An Open-XML Streaming Business Process Application

Existing DB Application Business PO Relational Database Interpretation Validation Input

Extending DB Application Business PO XML Relational Database Interpretation Validation Input SOAP

Oracle 10g – The High Performance XML Platform XSLT Processing XML Query Processing XML Caching w/HTTP security XSLT Processing XML Query Processing XML Caching w/o security XSLT Processing XML Query Processing XML Schema/DTD Validation XML Caching w/ JAAS security XML J2EE Components XML Messaging & Queuing XML Data Integration OracleAS J2EE OracleAS WebCache OracleDB XML Database Client XML Stream XML Stream XMLType Persistence XML Query Processing XML Schema Validation XSLT Processing XML Messaging & Queuing

Next Steps….  Recommended sessions – 40108: Making XML Technologies Easier to Use – 40255: Manipulating XML with Oracle JDeveloper  Recommended demos and/or hands-on labs – DB: Application Development: XML to the Power of SQL – AS: XML Technologies: Simplify Information Integration  See Your Business in Our Software – Visit the DEMOgrounds for a customized architectural review, see a customized demo with Solutions Factory, or receive a personalized proposal. Visit the DEMOgrounds for more information.  Relevant web sites to visit for more information – XML Technology Center – otn.oracle.com/tech/xml

Oracle XML Resources Oracle Technology Network Downloads, Demos, Samples, Papers XML Support Forum Oracle9i XML Handbook Covers all of Oracle XML technology Includes XDK CD with Samples Available today from Bookstores

A Q & Q U E S T I O N S A N S W E R S

Oracle XML Developer’s Kit 10g X M L T O T H E P O W E R O F S Q L

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