/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2010 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xquery;
import org.exist.memtree.MemTreeBuilder;
import org.exist.memtree.NodeImpl;
import org.exist.xquery.util.ExpressionDumper;
import org.exist.xquery.value.Item;
import org.exist.xquery.value.Sequence;
/**
* Constructs an in-memory CDATA node.
*
* @author wolf
*/
public class CDATAConstructor extends NodeConstructor {
private final String cdata;
private boolean literalCharacters = false;
/**
* @param context
*/
public CDATAConstructor(XQueryContext context, String content) {
super(context);
this.cdata = content;
}
/* (non-Javadoc)
* @see org.exist.xquery.Expression#eval(org.exist.xquery.value.Sequence, org.exist.xquery.value.Item)
*/
public Sequence eval(Sequence contextSequence, Item contextItem) throws XPathException {
if (context.getProfiler().isEnabled()) {
context.getProfiler().start(this);
context.getProfiler().message(this, Profiler.DEPENDENCIES, "DEPENDENCIES", Dependency.getDependenciesName(this.getDependencies()));
if (contextSequence != null)
{context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT SEQUENCE", contextSequence);}
if (contextItem != null)
{context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT ITEM", contextItem.toSequence());}
}
if (newDocumentContext)
{context.pushDocumentContext();}
try {
final MemTreeBuilder builder = context.getDocumentBuilder();
int nodeNr;
if (literalCharacters) {
//Empty CDATA sections generate no text nodes
if (cdata.isEmpty())
{return Sequence.EMPTY_SEQUENCE;}
nodeNr = builder.characters(cdata);
} else {
nodeNr = builder.cdataSection(cdata);
}
final NodeImpl node = builder.getDocument().getNode(nodeNr);
if (context.getProfiler().isEnabled())
{context.getProfiler().end(this, "", node);}
return node;
} finally {
if (newDocumentContext)
{context.popDocumentContext();}
}
}
/* (non-Javadoc)
* @see org.exist.xquery.Expression#analyze(org.exist.xquery.Expression, int)
*/
public void analyze(AnalyzeContextInfo contextInfo) throws XPathException {
super.analyze(contextInfo);
literalCharacters = (contextInfo.getFlags() & IN_NODE_CONSTRUCTOR) != 0;
}
/* (non-Javadoc)
* @see org.exist.xquery.Expression#dump(org.exist.xquery.util.ExpressionDumper)
*/
public void dump(ExpressionDumper dumper) {
dumper.display("<![CDATA[").display(cdata).display("]]>");
}
public String toString() {
return "<![CDATA[" + cdata.toString() + "]]>";
}
}