/*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is the Kowari Metadata Store.
*
* The Initial Developer of the Original Code is Plugged In Software Pty
* Ltd (http://www.pisoftware.com, mailto:info@pisoftware.com). Portions
* created by Plugged In Software Pty Ltd are Copyright (C) 2001,2002
* Plugged In Software Pty Ltd. All Rights Reserved.
*
* Contributor(s):
* Various contributions copyright:
* The Australian Commonwealth Government
* Department of Defense
* Developed by Netymon Pty Ltd
* under contract 4500430665
* contributed to the Mulgara Project under the
* Mozilla Public License version 1.1
* per clause 4.1.3 of the above contract.
*
* getModel() contributed by Netymon Pty Ltd on behalf of
* The Australian Commonwealth Government under contract 4500507038.
*
* [NOTE: The text of this Exhibit A may differ slightly from the text
* of the notices in the Source Code files of the Original Code. You
* should use the text of this Exhibit A rather than the text found in the
* Original Code Source Code for Your Modifications.]
*
*/
package org.mulgara.resolver.xsd;
// Java 2 standard packages
import java.net.URI;
import java.net.URISyntaxException;
// Third party packages
import org.apache.log4j.Logger;
import org.jrdf.vocabulary.RDF;
// Locally written packages
import org.mulgara.query.LocalNode;
import org.mulgara.query.rdf.Mulgara;
import org.mulgara.query.rdf.URIReferenceImpl;
import org.mulgara.resolver.spi.*;
/**
* Resolves XML Schema constraints from the Mulgara string pool.
*
* @created 2004-10-28
*
* @author <a href="http://staff.pisoftware.com/raboczi">Simon Raboczi</a>
* @author Mark Ludlow
* @company <a href="mailto:info@PIsoftware.com">Plugged In Software</a>
* @copyright © 2004 <a href="http://www.PIsoftware.com/">Plugged In Software Pty Ltd</a>
* @licence <a href="{@docRoot}/../../LICENCE">Mozilla Public License v1.1</a>
*/
public class XSDResolverFactory implements ResolverFactory {
/** Logger. */
@SuppressWarnings("unused")
private static final Logger logger = Logger.getLogger(XSDResolverFactory.class.getName());
/** The URI for the default graph. */
private static final URI DEFAULT_GRAPH = URI.create(Mulgara.XSD_GRAPH);
private static final URI graphTypeURI = URI.create(Mulgara.NAMESPACE + "XMLSchemaModel");
/** The preallocated local node representing the system model */
private long systemModel;
/** The preallocated local node representing the <code>rdf:type</code> property. */
private long rdfType;
/** The preallocated local node representing models stored on the Java heap. */
@SuppressWarnings("unused")
private long modelType;
/**
* Construct a local query.
*
* @param resolverFactoryInitializer {@inheritDoc}
* @throws IllegalArgumentException {@inheritDoc}
* @throws ResolverException {@inheritDoc}
*/
private XSDResolverFactory(ResolverFactoryInitializer resolverFactoryInitializer)
throws ResolverException, InitializerException {
// Validate "resolverFactoryInitializer" parameter
if (resolverFactoryInitializer == null) {
throw new IllegalArgumentException("Null \"resolverInitializer\" parameter");
}
// Initialize fields
rdfType = resolverFactoryInitializer.preallocate(new URIReferenceImpl(RDF.TYPE));
modelType = resolverFactoryInitializer.preallocate(new URIReferenceImpl(graphTypeURI));
systemModel = resolverFactoryInitializer.getSystemModel();
// No need to Claim mulgara:MemoryModel, as this is done by the default graphs
// resolverFactoryInitializer.addModelType(graphTypeURI, this);
try {
// Create the after node ID
XSDResolver.MULGARA_AFTER = resolverFactoryInitializer.preallocate(
new URIReferenceImpl(new URI(Mulgara.NAMESPACE + "after")));
// Create the before node ID
XSDResolver.MULGARA_BEFORE = resolverFactoryInitializer.preallocate(
new URIReferenceImpl(new URI(Mulgara.NAMESPACE + "before")));
// Create the less than node ID
XSDResolver.MULGARA_LT = resolverFactoryInitializer.preallocate(
new URIReferenceImpl(new URI(Mulgara.NAMESPACE + "lt")));
// Create the greater than node ID
XSDResolver.MULGARA_GT = resolverFactoryInitializer.preallocate(
new URIReferenceImpl(new URI(Mulgara.NAMESPACE + "gt")));
} catch (URISyntaxException e) {
throw new ResolverException("Generated bad XML schema URI", e);
} catch (InitializerException initializerException) {
throw new ResolverException("Failed to preallocate xsd node values.", initializerException);
}
// Register XSD-specific constraint types
try {
resolverFactoryInitializer.registerNewConstraint(new IntervalConstraintDescriptor());
} catch (InitializerException initializerException) {
throw new ResolverException("Failed to register new constraint", initializerException);
}
// Register the rule that generates XSD-specific constraints
try {
resolverFactoryInitializer.addSymbolicTransformation(
new IntervalTransformation(graphTypeURI,
new URIReferenceImpl(new URI(Mulgara.NAMESPACE + "lt")),
new URIReferenceImpl(new URI(Mulgara.NAMESPACE + "gt"))
)
);
} catch (InitializerException initializerException) {
throw new ResolverException("Failed to register new transformation", initializerException);
} catch (URISyntaxException e) {
throw new Error("Bad hardcoded constant", e);
}
// Store the after opposite
XSDResolver.oppositePropertyMap.put(new LocalNode(XSDResolver.MULGARA_AFTER),
new LocalNode(XSDResolver.MULGARA_BEFORE));
// Store the before opposite
XSDResolver.oppositePropertyMap.put(new LocalNode(XSDResolver.MULGARA_BEFORE),
new LocalNode(XSDResolver.MULGARA_AFTER));
// Store the greater than opposite
XSDResolver.oppositePropertyMap.put(new LocalNode(XSDResolver.MULGARA_GT),
new LocalNode(XSDResolver.MULGARA_LT));
// Store the less than opposite
XSDResolver.oppositePropertyMap.put(new LocalNode(XSDResolver.MULGARA_LT),
new LocalNode(XSDResolver.MULGARA_GT));
}
/**
* {@inheritDoc ResolverFactory}
*
* This is actually a non-operation, because the only persistent resources
* are outside the database.
*/
public void close() {
// null implementation
}
/**
* {@inheritDoc ResolverFactory}
*
* This is actually a non-operation, because the only persistent resources
* are outside the database.
*/
public void delete() {
// null implementation
}
/**
* {@inheritDoc}
* @return {sys:xsd, mulgara:XMLSchemaModel}
*/
public Graph[] getDefaultGraphs() {
return new Graph[] { new Graph(DEFAULT_GRAPH, graphTypeURI) };
}
/**
* {@inheritDoc}
* @return <code>false</code> - this graph does not support exports.
*/
public boolean supportsExport() {
return false;
}
/**
* Register this resolver upon database startup.
*
* @param resolverFactoryInitializer the database within which to find or
* create the various XML Schema resources
* @throws ResolverException If the XML Schema resources can't be found or created
*/
public static ResolverFactory newInstance(ResolverFactoryInitializer resolverFactoryInitializer)
throws ResolverException, InitializerException {
return new XSDResolverFactory(resolverFactoryInitializer);
}
/**
* Obtaining an XML Schema
*
* @param resolverSession the session which this query is local to
* @throws IllegalArgumentException if <var>resolverSession</var> is
* <code>null</code>
*/
public Resolver newResolver(boolean canWrite,
ResolverSession resolverSession,
Resolver systemResolver) throws
ResolverFactoryException {
return new XSDResolver(resolverSession, systemResolver, rdfType, systemModel);
}
}