itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

⏎ com/itextpdf/xmp/XMPSchemaRegistry.java

//Copyright (c) 2006, Adobe Systems Incorporated
//All rights reserved.
//
//        Redistribution and use in source and binary forms, with or without
//        modification, are permitted provided that the following conditions are met:
//        1. Redistributions of source code must retain the above copyright
//        notice, this list of conditions and the following disclaimer.
//        2. Redistributions in binary form must reproduce the above copyright
//        notice, this list of conditions and the following disclaimer in the
//        documentation and/or other materials provided with the distribution.
//        3. All advertising materials mentioning features or use of this software
//        must display the following acknowledgement:
//        This product includes software developed by the Adobe Systems Incorporated.
//        4. Neither the name of the Adobe Systems Incorporated nor the
//        names of its contributors may be used to endorse or promote products
//        derived from this software without specific prior written permission.
//
//        THIS SOFTWARE IS PROVIDED BY ADOBE SYSTEMS INCORPORATED ''AS IS'' AND ANY
//        EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//        WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//        DISCLAIMED. IN NO EVENT SHALL ADOBE SYSTEMS INCORPORATED BE LIABLE FOR ANY
//        DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
//        (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//        LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
//        ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
//        (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//        SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//        http://www.adobe.com/devnet/xmp/library/eula-xmp-library-java.html

package com.itextpdf.xmp;

import java.util.Map;

import com.itextpdf.xmp.properties.XMPAliasInfo;

/**
 * The schema registry keeps track of all namespaces and aliases used in the XMP
 * metadata. At initialisation time, the default namespaces and default aliases
 * are automatically registered. <b>Namespaces</b> must be registered before
 * used in namespace URI parameters or path expressions. Within the XMP Toolkit
 * the registered namespace URIs and prefixes must be unique. Additional
 * namespaces encountered when parsing RDF are automatically registered. The
 * namespace URI should always end in an XML name separator such as '/' or '#'.
 * This is because some forms of RDF shorthand catenate a namespace URI with an
 * element name to form a new URI.
 * <p>
 * <b>Aliases</b> in XMP serve the same purpose as Windows file shortcuts,
 * Macintosh file aliases, or UNIX file symbolic links. The aliases are simply
 * multiple names for the same property. One distinction of XMP aliases is that
 * they are ordered, there is an alias name pointing to an actual name. The
 * primary significance of the actual name is that it is the preferred name for
 * output, generally the most widely recognized name.
 * <p>
 * The names that can be aliased in XMP are restricted. The alias must be a top
 * level property name, not a field within a structure or an element within an
 * array. The actual may be a top level property name, the first element within
 * a top level array, or the default element in an alt-text array. This does not
 * mean the alias can only be a simple property. It is OK to alias a top level
 * structure or array to an identical top level structure or array, or to the
 * first item of an array of structures.
 * 
 * @since 27.01.2006
 */
public interface XMPSchemaRegistry
{
	// ---------------------------------------------------------------------------------------------
	// Namespace Functions

	/**
	 * Register a namespace URI with a suggested prefix. It is not an error if
	 * the URI is already registered, no matter what the prefix is. If the URI
	 * is not registered but the suggested prefix is in use, a unique prefix is
	 * created from the suggested one. The actual registeed prefix is always
	 * returned. The function result tells if the registered prefix is the
	 * suggested one.
	 * <p>
	 * Note: No checking is presently done on either the URI or the prefix.
	 * 
	 * @param namespaceURI
	 *            The URI for the namespace. Must be a valid XML URI.
	 * @param suggestedPrefix
	 *            The suggested prefix to be used if the URI is not yet
	 *            registered. Must be a valid XML name.
	 * @return Returns the registered prefix for this URI, is equal to the
	 *         suggestedPrefix if the namespace hasn't been registered before,
	 *         otherwise the existing prefix.
	 * @throws XMPException If the parameters are not accordingly set
	 */
	String registerNamespace(String namespaceURI, String suggestedPrefix) throws XMPException;

	
	/**
	 * Obtain the prefix for a registered namespace URI.
	 * <p>
	 * It is not an error if the namespace URI is not registered.
	 * 
	 * @param namespaceURI
	 *            The URI for the namespace. Must not be null or the empty
	 *            string.
	 * @return Returns the prefix registered for this namespace URI or null.
	 */
	String getNamespacePrefix(String namespaceURI);

	
	/**
	 * Obtain the URI for a registered namespace prefix.
	 * <p>
	 * It is not an error if the namespace prefix is not registered.
	 * 
	 * @param namespacePrefix
	 *            The prefix for the namespace. Must not be null or the empty
	 *            string.
	 * @return Returns the URI registered for this prefix or null.
	 */
	String getNamespaceURI(String namespacePrefix);

	
	/**
	 * @return Returns the registered prefix/namespace-pairs as map, where the keys are the
	 *         namespaces and the values are the prefixes.
	 */
	Map getNamespaces();

	
	/**
	 * @return Returns the registered namespace/prefix-pairs as map, where the keys are the
	 *         prefixes and the values are the namespaces.
	 */
	Map getPrefixes();
	
	
	/**
	 * Deletes a namespace from the registry.
	 * <p>
	 * Does nothing if the URI is not registered, or if the namespaceURI
	 * parameter is null or the empty string.
	 * <p>
	 * Note: Not yet implemented.
	 * 
	 * @param namespaceURI
	 *            The URI for the namespace.
	 */
	void deleteNamespace(String namespaceURI);

	
	
	
	
	// ---------------------------------------------------------------------------------------------
	// Alias Functions

		
	/**
	 * Determines if a name is an alias, and what it is aliased to.
	 * 
	 * @param aliasNS
	 *            The namespace URI of the alias. Must not be <code>null</code> or the empty
	 *            string.
	 * @param aliasProp
	 *            The name of the alias. May be an arbitrary path expression
	 *            path, must not be <code>null</code> or the empty string.
	 * @return Returns the <code>XMPAliasInfo</code> for the given alias namespace and property or
	 * 		<code>null</code> if there is no such alias.
	 */
	XMPAliasInfo resolveAlias(String aliasNS, String aliasProp);

	
	/**
	 * Collects all aliases that are contained in the provided namespace.
	 * If nothing is found, an empty array is returned. 
	 * 
	 * @param aliasNS a schema namespace URI
	 * @return Returns all alias infos from aliases that are contained in the provided namespace. 
	 */
	XMPAliasInfo[] findAliases(String aliasNS);
	
	
	/**
	 * Searches for registered aliases.
	 * 
	 * @param qname
	 *            an XML conform qname
	 * @return Returns if an alias definition for the given qname to another
	 *         schema and property is registered.
	 */
	XMPAliasInfo findAlias(String qname);
	
		
	/**
	 * @return Returns the registered aliases as map, where the key is the "qname" (prefix and name)
	 * and the value an <code>XMPAliasInfo</code>-object.
	 */
	Map getAliases();


}

⏎ com/itextpdf/xmp/XMPSchemaRegistry.java

Or download all of them as a single archive file:

File name: itextpdf-5.5.14-fyi.zip
File size: 2163839 bytes
Release date: 2009-10-09
Download 

⇒ iText-2.1.6.jar - iText, a JAVA-PDF library

⇐ iText layout.jar Source Code

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation