/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2000-2002 The Apache Software Foundation.
* 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package com.sun.org.apache.xerces.internal.impl.xs;
import com.sun.org.apache.xerces.internal.util.NamespaceSupport;
/**
* This class customizes the behaviour of the util.NamespaceSupport
* class in order to easily implement some features that we need for
* efficient schema handling. It will not be generally useful.
*
* @author Neil Graham, IBM
*
* @version $Id: SchemaNamespaceSupport.java,v 1.4 2002/08/14 22:49:28 sandygao Exp $
*/
public class SchemaNamespaceSupport
extends NamespaceSupport {
public SchemaNamespaceSupport () {
super();
} // constructor
// more effecient than NamespaceSupport(NamespaceContext)
public SchemaNamespaceSupport(SchemaNamespaceSupport nSupport) {
fNamespaceSize = nSupport.fNamespaceSize;
if (fNamespace.length < fNamespaceSize)
fNamespace = new String[fNamespaceSize];
System.arraycopy(nSupport.fNamespace, 0, fNamespace, 0, fNamespaceSize);
fCurrentContext = nSupport.fCurrentContext;
if (fContext.length <= fCurrentContext)
fContext = new int[fCurrentContext+1];
System.arraycopy(nSupport.fContext, 0, fContext, 0, fCurrentContext+1);
} // end constructor
/**
* This method takes a set of Strings, as stored in a
* NamespaceSupport object, and "fools" the object into thinking
* that this is one unified context. This is meant to be used in
* conjunction with things like local elements, whose declarations
* may be deeply nested but which for all practical purposes may
* be regarded as being one level below the global <schema>
* element--at least with regard to namespace declarations.
* It's worth noting that the context from which the strings are
* being imported had better be using the same SymbolTable.
*/
public void setEffectiveContext (String [] namespaceDecls) {
if(namespaceDecls == null || namespaceDecls.length == 0) return;
pushContext();
int newSize = fNamespaceSize + namespaceDecls.length;
if (fNamespace.length < newSize) {
// expand namespace's size...
String[] tempNSArray = new String[newSize];
System.arraycopy(fNamespace, 0, tempNSArray, 0, fNamespace.length);
fNamespace = tempNSArray;
}
System.arraycopy(namespaceDecls, 0, fNamespace, fNamespaceSize,
namespaceDecls.length);
fNamespaceSize = newSize;
} // setEffectiveContext(String):void
/**
* This method returns an array of Strings, as would be stored in
* a NamespaceSupport object. This array contains all
* declarations except those at the global level.
*/
public String [] getEffectiveLocalContext() {
// the trick here is to recognize that all local contexts
// happen to start at fContext[3].
// context 1: empty
// context 2: decls for xml and xmlns;
// context 3: decls on <xs:schema>: the global ones
String[] returnVal = null;
if (fCurrentContext >= 3) {
int bottomLocalContext = fContext[3];
int copyCount = fNamespaceSize - bottomLocalContext;
if (copyCount > 0) {
returnVal = new String[copyCount];
System.arraycopy(fNamespace, bottomLocalContext, returnVal, 0,
copyCount);
}
}
return returnVal;
} // getEffectiveLocalContext():String
// This method removes from this object all the namespaces
// returned by getEffectiveLocalContext.
public void makeGlobal() {
if (fCurrentContext >= 3) {
fCurrentContext = 3;
fNamespaceSize = fContext[3];
}
} // makeGlobal
} // class NamespaceSupport
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