/* * reserved comment block * DO NOT REMOVE OR ALTER! */ /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (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.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.sun.org.apache.xerces.internal.impl.xs; import com.sun.org.apache.xerces.internal.impl.xs.util.XSGrammarPool; import com.sun.org.apache.xerces.internal.xni.grammars.Grammar; import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription; import com.sun.org.apache.xerces.internal.xni.grammars.XSGrammar; import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource; import com.sun.org.apache.xerces.internal.xs.LSInputList; import com.sun.org.apache.xerces.internal.xs.StringList; import com.sun.org.apache.xerces.internal.xs.XSConstants; import com.sun.org.apache.xerces.internal.xs.XSLoader; import com.sun.org.apache.xerces.internal.xs.XSModel; import com.sun.org.apache.xerces.internal.xs.XSNamedMap; import com.sun.org.apache.xerces.internal.xs.XSObjectList; import com.sun.org.apache.xerces.internal.xs.XSTypeDefinition; import org.w3c.dom.DOMConfiguration; import org.w3c.dom.DOMException; import org.w3c.dom.DOMStringList; import org.w3c.dom.ls.LSInput; /** *
An implementation of XSLoader which wraps XMLSchemaLoader.
* * @xerces.internal * * @author Michael Glavassevich, IBM * * @version $Id: XSLoaderImpl.java,v 1.7 2010-11-01 04:39:55 joehw Exp $ */ public final class XSLoaderImpl implements XSLoader, DOMConfiguration { /** * Grammar pool. Need this to prevent us from * getting two grammars from the same namespace. */ private final XSGrammarPool fGrammarPool = new XSGrammarMerger(); /** Schema loader. **/ private final XMLSchemaLoader fSchemaLoader = new XMLSchemaLoader(); /** * No-args constructor. */ public XSLoaderImpl() { fSchemaLoader.setProperty(XMLSchemaLoader.XMLGRAMMAR_POOL, fGrammarPool); } /** * The configuration of a document. It maintains a table of recognized * parameters. Using the configuration, it is possible to change the * behavior of the load methods. The configuration may support the * setting of and the retrieval of the following non-boolean parameters * defined on theDOMConfiguration
interface:
* error-handler
(DOMErrorHandler
) and
* resource-resolver
(LSResourceResolver
).
* "validate"
true
false
LSInput
s.
* @param is The list of LSInput
s from which the XML
* Schema documents are to be read.
* @return An XSModel representing the schema documents.
*/
public XSModel loadInputList(LSInputList is) {
final int length = is.getLength();
try {
fGrammarPool.clear();
for (int i = 0; i < length; ++i) {
fSchemaLoader.loadGrammar(fSchemaLoader.dom2xmlInputSource(is.item(i)));
}
return fGrammarPool.toXSModel();
}
catch (Exception e) {
fSchemaLoader.reportDOMFatalError(e);
return null;
}
}
/**
* Parse an XML Schema document from a location identified by a URI
* reference. If the URI contains a fragment identifier, the behavior is
* not defined by this specification.
* @param uri The location of the XML Schema document to be read.
* @return An XSModel representing this schema.
*/
public XSModel loadURI(String uri) {
try {
fGrammarPool.clear();
return ((XSGrammar) fSchemaLoader.loadGrammar(new XMLInputSource(null, uri, null))).toXSModel();
}
catch (Exception e){
fSchemaLoader.reportDOMFatalError(e);
return null;
}
}
/**
* Parse an XML Schema document from a resource identified by a
* LSInput
.
* @param is The LSInput
from which the source
* document is to be read.
* @return An XSModel representing this schema.
*/
public XSModel load(LSInput is) {
try {
fGrammarPool.clear();
return ((XSGrammar) fSchemaLoader.loadGrammar(fSchemaLoader.dom2xmlInputSource(is))).toXSModel();
}
catch (Exception e) {
fSchemaLoader.reportDOMFatalError(e);
return null;
}
}
/* (non-Javadoc)
* @see com.sun.org.apache.xerces.internal.dom3.DOMConfiguration#setParameter(java.lang.String, java.lang.Object)
*/
public void setParameter(String name, Object value) throws DOMException {
fSchemaLoader.setParameter(name, value);
}
/* (non-Javadoc)
* @see com.sun.org.apache.xerces.internal.dom3.DOMConfiguration#getParameter(java.lang.String)
*/
public Object getParameter(String name) throws DOMException {
return fSchemaLoader.getParameter(name);
}
/* (non-Javadoc)
* @see com.sun.org.apache.xerces.internal.dom3.DOMConfiguration#canSetParameter(java.lang.String, java.lang.Object)
*/
public boolean canSetParameter(String name, Object value) {
return fSchemaLoader.canSetParameter(name, value);
}
/* (non-Javadoc)
* @see com.sun.org.apache.xerces.internal.dom3.DOMConfiguration#getParameterNames()
*/
public DOMStringList getParameterNames() {
return fSchemaLoader.getParameterNames();
}
/**
* Grammar pool which merges grammars from the same namespace into one. This eliminates
* duplicate named components. It doesn't ensure that the grammar is consistent, however
* this no worse than than the behaviour of XMLSchemaLoader alone when used as an XSLoader.
*/
private static final class XSGrammarMerger extends XSGrammarPool {
public XSGrammarMerger () {}
public void putGrammar(Grammar grammar) {
SchemaGrammar cachedGrammar =
toSchemaGrammar(super.getGrammar(grammar.getGrammarDescription()));
if (cachedGrammar != null) {
SchemaGrammar newGrammar = toSchemaGrammar(grammar);
if (newGrammar != null) {
mergeSchemaGrammars(cachedGrammar, newGrammar);
}
}
else {
super.putGrammar(grammar);
}
}
private SchemaGrammar toSchemaGrammar (Grammar grammar) {
return (grammar instanceof SchemaGrammar) ? (SchemaGrammar) grammar : null;
}
private void mergeSchemaGrammars(SchemaGrammar cachedGrammar, SchemaGrammar newGrammar) {
/** Add new top-level element declarations. **/
XSNamedMap map = newGrammar.getComponents(XSConstants.ELEMENT_DECLARATION);
int length = map.getLength();
for (int i = 0; i < length; ++i) {
XSElementDecl decl = (XSElementDecl) map.item(i);
if (cachedGrammar.getGlobalElementDecl(decl.getName()) == null) {
cachedGrammar.addGlobalElementDecl(decl);
}
}
/** Add new top-level attribute declarations. **/
map = newGrammar.getComponents(XSConstants.ATTRIBUTE_DECLARATION);
length = map.getLength();
for (int i = 0; i < length; ++i) {
XSAttributeDecl decl = (XSAttributeDecl) map.item(i);
if (cachedGrammar.getGlobalAttributeDecl(decl.getName()) == null) {
cachedGrammar.addGlobalAttributeDecl(decl);
}
}
/** Add new top-level type definitions. **/
map = newGrammar.getComponents(XSConstants.TYPE_DEFINITION);
length = map.getLength();
for (int i = 0; i < length; ++i) {
XSTypeDefinition decl = (XSTypeDefinition) map.item(i);
if (cachedGrammar.getGlobalTypeDecl(decl.getName()) == null) {
cachedGrammar.addGlobalTypeDecl(decl);
}
}
/** Add new top-level attribute group definitions. **/
map = newGrammar.getComponents(XSConstants.ATTRIBUTE_GROUP);
length = map.getLength();
for (int i = 0; i < length; ++i) {
XSAttributeGroupDecl decl = (XSAttributeGroupDecl) map.item(i);
if (cachedGrammar.getGlobalAttributeGroupDecl(decl.getName()) == null) {
cachedGrammar.addGlobalAttributeGroupDecl(decl);
}
}
/** Add new top-level model group definitions. **/
map = newGrammar.getComponents(XSConstants.MODEL_GROUP);
length = map.getLength();
for (int i = 0; i < length; ++i) {
XSGroupDecl decl = (XSGroupDecl) map.item(i);
if (cachedGrammar.getGlobalGroupDecl(decl.getName()) == null) {
cachedGrammar.addGlobalGroupDecl(decl);
}
}
/** Add new top-level notation declarations. **/
map = newGrammar.getComponents(XSConstants.NOTATION_DECLARATION);
length = map.getLength();
for (int i = 0; i < length; ++i) {
XSNotationDecl decl = (XSNotationDecl) map.item(i);
if (cachedGrammar.getGlobalNotationDecl(decl.getName()) == null) {
cachedGrammar.addGlobalNotationDecl(decl);
}
}
/**
* Add all annotations. Since these components are not named it's
* possible we'll add duplicate components. There isn't much we can
* do. It's no worse than XMLSchemaLoader when used as an XSLoader.
*/
XSObjectList annotations = newGrammar.getAnnotations();
length = annotations.getLength();
for (int i = 0; i < length; ++i) {
cachedGrammar.addAnnotation((XSAnnotationImpl) annotations.item(i));
}
}
public boolean containsGrammar(XMLGrammarDescription desc) {
return false;
}
public Grammar getGrammar(XMLGrammarDescription desc) {
return null;
}
public Grammar retrieveGrammar(XMLGrammarDescription desc) {
return null;
}
public Grammar [] retrieveInitialGrammarSet (String grammarType) {
return new Grammar[0];
}
}
}