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/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
*/
/*
* 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.
*/
/*
* $Id: DOMWSFilter.java,v 1.2.4.1 2005/09/06 06:14:31 pvedula Exp $
*/
package com.sun.org.apache.xalan.internal.xsltc.dom;
import com.sun.org.apache.xalan.internal.xsltc.DOM;
import com.sun.org.apache.xalan.internal.xsltc.DOMEnhancedForDTM;
import com.sun.org.apache.xalan.internal.xsltc.StripFilter;
import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
import com.sun.org.apache.xml.internal.dtm.DTM;
import com.sun.org.apache.xml.internal.dtm.DTMWSFilter;
import java.util.HashMap;
import java.util.Map;
/**
* A wrapper class that adapts the
* {@link com.sun.org.apache.xml.internal.dtm.DTMWSFilter DTMWSFilter} interface to the XSLTC
* DOM {@link com.sun.org.apache.xalan.internal.xsltc.StripFilter StripFilter} interface.
*/
public class DOMWSFilter implements DTMWSFilter {
private AbstractTranslet m_translet;
private StripFilter m_filter;
// The Map for DTM to mapping array
private Map<DTM, short[]> m_mappings;
// Cache the DTM and mapping that are used last time
private DTM m_currentDTM;
private short[] m_currentMapping;
/**
* Construct an adapter connecting the <code>DTMWSFilter</code> interface
* to the <code>StripFilter</code> interface.
*
* @param translet A translet that also implements the StripFilter
* interface.
*
* @see com.sun.org.apache.xml.internal.dtm.DTMWSFilter
* @see com.sun.org.apache.xalan.internal.xsltc.StripFilter
*/
public DOMWSFilter(AbstractTranslet translet) {
m_translet = translet;
m_mappings = new HashMap<>();
if (translet instanceof StripFilter) {
m_filter = (StripFilter) translet;
}
}
/**
* Test whether whitespace-only text nodes are visible in the logical
* view of <code>DTM</code>. Normally, this function
* will be called by the implementation of <code>DTM</code>;
* it is not normally called directly from
* user code.
*
* @param node int handle of the node.
* @param dtm the DTM that owns this node
* @return one of <code>NOTSTRIP</code>, <code>STRIP</code> or
* <code>INHERIT</code>.
*/
public short getShouldStripSpace(int node, DTM dtm) {
if (m_filter != null && dtm instanceof DOM) {
DOM dom = (DOM)dtm;
int type = 0;
if (dtm instanceof DOMEnhancedForDTM) {
DOMEnhancedForDTM mappableDOM = (DOMEnhancedForDTM)dtm;
short[] mapping;
if (dtm == m_currentDTM) {
mapping = m_currentMapping;
}
else {
mapping = m_mappings.get(dtm);
if (mapping == null) {
mapping = mappableDOM.getMapping(
m_translet.getNamesArray(),
m_translet.getUrisArray(),
m_translet.getTypesArray());
m_mappings.put(dtm, mapping);
m_currentDTM = dtm;
m_currentMapping = mapping;
}
}
int expType = mappableDOM.getExpandedTypeID(node);
// %OPT% The mapping array does not have information about all the
// exptypes. However it does contain enough information about all names
// in the translet's namesArray. If the expType does not fall into the
// range of the mapping array, it means that the expType is not for one
// of the recognized names. In this case we can just set the type to -1.
if (expType >= 0 && expType < mapping.length)
type = mapping[expType];
else
type = -1;
}
else {
return INHERIT;
}
if (m_filter.stripSpace(dom, node, type)) {
return STRIP;
} else {
return NOTSTRIP;
}
} else {
return NOTSTRIP;
}
}
}
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