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A processor for parsing, validating, serializing and manipulating XML, written in Java
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/*
* 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 org.apache.xerces.impl.xs;
import org.apache.xerces.util.XMLResourceIdentifierImpl;
import org.apache.xerces.xni.QName;
import org.apache.xerces.xni.XMLAttributes;
import org.apache.xerces.xni.grammars.XMLGrammarDescription;
import org.apache.xerces.xni.grammars.XMLSchemaDescription;
/**
* All information specific to XML Schema grammars.
*
* @xerces.internal
*
* @author Neil Graham, IBM
* @author Neeraj Bajaj, SUN Microsystems.
*
* @version $Id$
*/
public class XSDDescription extends XMLResourceIdentifierImpl
implements XMLSchemaDescription {
// used to indicate what triggered the call
/**
* Indicate that this description was just initialized.
*/
public final static short CONTEXT_INITIALIZE = -1;
/**
* Indicate that the current schema document is d by another
* schema document.
*/
public final static short CONTEXT_INCLUDE = 0;
/**
* Indicate that the current schema document is d by another
* schema document.
*/
public final static short CONTEXT_REDEFINE = 1;
/**
* Indicate that the current schema document is ed by another
* schema document.
*/
public final static short CONTEXT_IMPORT = 2;
/**
* Indicate that the current schema document is being preparsed.
*/
public final static short CONTEXT_PREPARSE = 3;
/**
* Indicate that the parse of the current schema document is triggered
* by xsi:schemaLocation/noNamespaceSchemaLocation attribute(s) in the
* instance document. This value is only used if we don't defer the loading
* of schema documents.
*/
public final static short CONTEXT_INSTANCE = 4;
/**
* Indicate that the parse of the current schema document is triggered by
* the occurrence of an element whose namespace is the target namespace
* of this schema document. This value is only used if we do defer the
* loading of schema documents until a component from that namespace is
* referenced from the instance.
*/
public final static short CONTEXT_ELEMENT = 5;
/**
* Indicate that the parse of the current schema document is triggered by
* the occurrence of an attribute whose namespace is the target namespace
* of this schema document. This value is only used if we do defer the
* loading of schema documents until a component from that namespace is
* referenced from the instance.
*/
public final static short CONTEXT_ATTRIBUTE = 6;
/**
* Indicate that the parse of the current schema document is triggered by
* the occurrence of an "xsi:type" attribute, whose value (a QName) has
* the target namespace of this schema document as its namespace.
* This value is only used if we do defer the loading of schema documents
* until a component from that namespace is referenced from the instance.
*/
public final static short CONTEXT_XSITYPE = 7;
/**
* Indicate that the current schema document is being n by another
* schema document.
*/
public final static short CONTEXT_OVERRIDE = 8;
// REVISIT: write description of these fields
protected short fContextType;
protected String [] fLocationHints ;
protected QName fTriggeringComponent;
protected QName fEnclosedElementName;
protected XMLAttributes fAttributes;
/**
* the type of the grammar (e.g., DTD or XSD);
*
* @see org.apache.xerces.xni.grammars.Grammar
*/
public String getGrammarType() {
return XMLGrammarDescription.XML_SCHEMA;
}
/**
* Get the context. The returned value is one of the pre-defined
* CONTEXT_xxx constants.
*
* @return the value indicating the context
*/
public short getContextType() {
return fContextType ;
}
/**
* If the context is "include" or "redefine", then return the target
* namespace of the enclosing schema document; otherwise, the expected
* target namespace of this document.
*
* @return the expected/enclosing target namespace
*/
public String getTargetNamespace() {
return fNamespace;
}
/**
* For import and references from the instance document, it's possible to
* have multiple hints for one namespace. So this method returns an array,
* which contains all location hints.
*
* @return an array of all location hints associated to the expected
* target namespace
*/
public String[] getLocationHints() {
return fLocationHints ;
}
/**
* If a call is triggered by an element/attribute/xsi:type in the instance,
* this call returns the name of such triggering component: the name of
* the element/attribute, or the value of the xsi:type.
*
* @return the name of the triggering component
*/
public QName getTriggeringComponent() {
return fTriggeringComponent ;
}
/**
* If a call is triggered by an attribute or xsi:type, then this mehtod
* returns the enclosing element of such element.
*
* @return the name of the enclosing element
*/
public QName getEnclosingElementName() {
return fEnclosedElementName ;
}
/**
* If a call is triggered by an element/attribute/xsi:type in the instance,
* this call returns all attribute of such element (or enclosing element).
*
* @return all attributes of the tiggering/enclosing element
*/
public XMLAttributes getAttributes() {
return fAttributes;
}
public boolean fromInstance() {
return fContextType == CONTEXT_ATTRIBUTE ||
fContextType == CONTEXT_ELEMENT ||
fContextType == CONTEXT_INSTANCE ||
fContextType == CONTEXT_XSITYPE;
}
/**
* Compares this grammar with the given grammar. Currently, we compare
* the target namespaces.
*
* @param descObj The description of the grammar to be compared with
* @return True if they are equal, else false
*/
public boolean equals(Object descObj) {
if(!(descObj instanceof XMLSchemaDescription)) return false;
XMLSchemaDescription desc = (XMLSchemaDescription)descObj;
if (fNamespace != null)
return fNamespace.equals(desc.getTargetNamespace());
else // fNamespace == null
return desc.getTargetNamespace() == null;
}
/**
* Returns the hash code of this grammar
*
* @return The hash code
*/
public int hashCode() {
return (fNamespace == null) ? 0 : fNamespace.hashCode();
}
public void setContextType(short contextType){
fContextType = contextType ;
}
public void setTargetNamespace(String targetNamespace){
fNamespace = targetNamespace ;
}
public void setLocationHints(String [] locationHints){
int length = locationHints.length ;
fLocationHints = new String[length];
System.arraycopy(locationHints, 0, fLocationHints, 0, length);
//fLocationHints = locationHints ;
}
public void setTriggeringComponent(QName triggeringComponent){
fTriggeringComponent = triggeringComponent ;
}
public void setEnclosingElementName(QName enclosedElementName){
fEnclosedElementName = enclosedElementName ;
}
public void setAttributes(XMLAttributes attributes){
fAttributes = attributes ;
}
/**
* resets all the fields
*/
public void reset(){
super.clear();
fContextType = CONTEXT_INITIALIZE;
fLocationHints = null ;
fTriggeringComponent = null ;
fEnclosedElementName = null ;
fAttributes = null ;
}
public XSDDescription makeClone() {
XSDDescription desc = new XSDDescription();
desc.fAttributes = this.fAttributes;
desc.fBaseSystemId = this.fBaseSystemId;
desc.fContextType = this.fContextType;
desc.fEnclosedElementName = this.fEnclosedElementName;
desc.fExpandedSystemId = this.fExpandedSystemId;
desc.fLiteralSystemId = this.fLiteralSystemId;
desc.fLocationHints = this.fLocationHints;
desc.fPublicId = this.fPublicId;
desc.fNamespace = this.fNamespace;
desc.fTriggeringComponent = this.fTriggeringComponent;
return desc;
}
} // XSDDescription