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Oracle® XML Developer's Kit Programmer's Guide
10g Release 2 (10.1.2)
Part No. B14033-01
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2 Getting Started with XDK Java Components

This chapter contains these topics:

XDK Java Components Specifications

XDK Java components, release 10.1, are built on these specifications:

DOM Specifications

In release 10.1, the DOM APIs include support for two new working drafts, DOM Level 3 Validation and DOM Level 3 Load and Save.

Load and Save

The DOM Level 3 Load and Save module enables software developers to load and save XML content inside conforming products. DOM 3.0 Core interface DOMConfiguration is referred by DOM 3 Load and Save. Although DOM 3.0 Core is not supported, a limited implementation of this interface is available.

The following configuration parameters are supported by XMLDOMBuilder which implements LSParser:

  • "cdata-sections"

  • "validate"

  • "validate-if-schema"

  • "whitespace-in-element-content"

The following configuration parameters are supported by XMLDOMWriter which implements LSSerializer:

  • "format-pretty-print"

  • "xml-declaration"

Validation

DOM 3.0 validation allows users to retrieve the metadata definitions from XML schemas, query the validity of DOM operations and validate the DOM documents or sub-trees against the XML schema.

Some DOM 3 Core functions referred by Validation are implemented, but Core itself is not supported:

NameList and DOMStringList in DOM core are supported for validation purpose.

Validation is based on XML Schema, DTD needs to be converted to Schema first (use DTDToSchema utility).

XSL Transformations Specifications

The XSLT processor adds support for the current working drafts of XSLT 2.0, XPath 2.0, and the shared XPath/XQuery data model.

For the XPath 2.0 specification, only the new XPath 2.0 grammar and backwards compatibility with XPath 1.0 are supported.

These features of the specifications are not supported in release 10.1:

  • The functions in the Functions and Operators specification are not supported. Only the functions from XSLT 1.0 specification are supported.

  • The validate and complex types in SequenceType expressions are not supported.

  • The new datatypes fn:yearMonthduration and fn:dayTimeDuration are not supported.

  • The Schema Import and Static Typing features are not supported.

  • The XSLT instructions xsl:result-document and xsl:namespace are not supported.

  • The XSLT instructions xsl:text and xsl:number use XSLT 1.0 semantics and syntax.

  • The standard attributes are allowed only on xsl:stylesheet and literal result elements, except for default-xpath-namespace and version.

  • The processor does not honor the following attributes:

    • [required] on xsl:param

    • [XML Schema related attributes, like xsl:validation and xsl:type, etc.

  • Regular expression functions are not supported.

  • Parameters are not passed through built-in templates.

  • xsl:sequence is not supported

Installing XDK Java Components

XDK Java components are included with the Oracle database and with the Oracle application server. You can download the latest beta or production version of XDK Java components from OTN as part of the XDK. The XDK Java components and JavaBeans are now bundled together.

If you installed XDK with the Oracle database or the Oracle application server, you can use this chapter as a reference.

If you download the XDK from OTN, follow these steps:

XDK Java Components Directory Structure

After installing the XDK, the directory structure is: 

-$XDK_HOME
    | - bin: executable files and setup script or batch files.
    | - lib: library files.
    | - xdk:
         | - admin: (Administration): SQL script and XSL Servlet Configuration
                     file (XSQLConfig.xml).
         | - demo/java: demonstration code 
         | - doc/java: documents including release notes and Javadoc HTML.

All the XDK Java components are certified and supported with JDK 1.2, JDK 1.3, and JDK 1.4. Make sure that your CLASSPATH includes all the necessary libraries:

Table 2-1 XDK Java Components Libraries

Component Library Notes
XML Parser, XSL Processor xmlparserv2.jar

XML Parser V2 for Java, which includes JAXP 1.1, DOM, SAX and XSLT APIs.
Message files for XML Parser. xmlmesg.jar If you want to use XML Parser with a language other than English, you need to set this JAR file in your CLASSPATH.
XML Schema Processor xschema.jar XML Schema Processor for Java.
XML SQL Utility xsu12.jar XML SQL Utility for JDK 1.2 and later.
XSQL Servlet oraclesql.jar Oracle XSQL Servlet.
XSQL xsqlserializers.jar Oracle XSQL Serializers for FOP/PDF Integration.
JAXB Class Generator, Pipeline Processor, Differ xml.jar Class Generator for Java.
JavaBeans xmlcomp.jar

xmlcomp2.jar

JavaBeans Utilities.
TransX Utility transx.zip Oracle TransX Utility.

In addition, XML SQL Utility, XSQL Servlet, and TransX Utility all depend on JDBC and globalization support libraries, which are listed in Table 2-2:

Table 2-2 JDBC and Globalization Support Libraries for XDK Java Components

Component Library Notes
JDBC classes12.zip JDBC for JDK 1.2 and later.
Globalization Support orai18n.jar Globalization support for JDK 1.2 and later.
XMLType xdb.jar XMLType Java APIs in $ORACLE_HOME/rdbms/jlib/
JDeveloper Runtime jdev-rt.zip Java GUI libraries.

XDK Java Components Environment Settings

The UNIX and Windows environment settings are listed:

UNIX Environment Settings for XDK Java Components

This file sets up the environment:

$XDK_HOME/bin/env.csh

Table 2-3 lists the UNIX environment variables, with the ones that must be customized each marked with "Yes":

Table 2-3 UNIX Environment Settings for XDK Java Components

Variable Notes Yes/No
$JDBCVER JDBC version. For JDK 1.2 and later, set to 12. Yes
$JDKVER JDK version obtained by JDK -version.Default value is 1.2.2_07. Yes
$INSTALL_ROOT Installation root of XDK which is the directory $XDK_HOME. No
$JAVA_HOME Directory where the Java JDK, Standard Edition is installed. Yes
$CLASSPATHJ {ORACLE_HOME}/jdbc/lib/classes${JDBCVER}.zip:

${ORACLE_HOME}/jdbc/lib/nls_charset${JDBCVER}.jar

If you are running the XSU on a system different from where the Oracle database is installed, you have to update your CLASSPATHJ setting with the correct locations of the JDBC library (classes12.jar). The orai18n.jar is needed to support certain character sets. See "XDK Java Components Globalization Support". Note that if you do not have these libraries on your system, these are both available on OTN (http://www.oracle.com/technology), as part of the JDBC driver download.

Yes
$CLASSPATH Include the following:

.:${CLASSPATHJ}:${INSTALL_ROOT}/lib/xmlparserv2.jar:

${INSTALL_ROOT}/lib/xschema.jar:

${INSTALL_ROOT}/lib/xsu${JDBCVER}.jar:

${INSTALL_ROOT}/lib/oraclexsql.jar:

${INSTALL_ROOT}/lib/classgen.jar

No
$PATH ${JAVA_HOME}/bin:${PATH}:${INSTALL_ROOT}/bin No
$LD_LIBRARY_PATH For OCI JDBC connections:

${ORACLE_HOME}/lib:${LD_LIBRARY_PATH}

No

Windows Environment Settings for XDK Java Components

This file sets up the environment:

%XDK_HOME%\bin\env.bat

Table 2-4 lists the Windows environment variables with the ones that must be customized each marked with "Yes":

Table 2-4 Windows Environment Settings for XDK Java Components

Variable Notes Yes/No
%JDBCVER% JDBC version. If using JDK 1.2 and later, it should be set to 12. Yes
%JDKVER% JDK version which you can get from: JDK -version.Default value is 1.2.2_07. Yes
%INSTALL_ROOT% Installation root of XDK, which is the directory %XDK_HOME%. No
%JAVA_HOME% Directory where the Java SDK, Standard Edition is installed. Yes
%CLASSPATHJ% CLASSPATHJ=%ORACLE_HOME%\jdbc\lib\classes%JDBCVER%.zip;

%ORACLE_HOME%\jdbc\lib\nls_charset%JDBCVER%.jar

Yes
%CLASSPATH% .;%CLASSPATHJ%;%INSTALL_ROOT%\lib\xmlparserv2.jar;

%INSTALL_ROOT%\lib\xschema.jar;

%INSTALL_ROOT%\lib\xsu%JDBCVER%.jar;

%INSTALL_ROOT%\lib\oraclexsql.jar;%INSTALL_ROOT%\lib\classgen.jar

No
%PATH% PATH=%JAVA_HOME%\bin;%ORACLE_HOME%\bin;%PATH%;%INSTALL_ROOT%\bin No

XDK Java Components Globalization Support

Here is a summary on the settings that relate to Globalization Support:

XDK Java Components Dependencies

Figure 2-1 shows the dependencies of XDK Java Components when using JDK 1.2 and higher:

Figure 2-1 XDK Java Components Dependencies Using JDK 1.2.x and Higher

Description of adxdk110.gif follows
Description of the illustration adxdk110.gif

After you correctly setup the environment, include all the necessary JAR files in your CLASSPATH. You can then start writing your Java programs and compiling them with the javac command: 

javac your_program.java

If the compilation finishes without errors, then you can just test your program using the command line or the Web Server.


See Also:

Chapter 3, "XML Parser for Java" for further discussion of the XDK Java components

Verifying the XDK Java Components Version

To obtain the version of XDK you are working with, compile and run the following Java code (XDKVersion.java): 

import java.net.URL;
import oracle.xml.parser.v2.XMLParser;
public class XDKVersion
{
   static public void main(String[] argv)
   {
      System.out.println("You are using version: ");
      System.out.println(XMLParser.getReleaseVersion());
   }

}
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