/*
* 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.bsf.xml;
import javax.script.ScriptEngine;
import javax.script.ScriptException;
import javax.xml.stream.XMLStreamException;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.impl.builder.StAXOMBuilder;
import org.apache.xmlbeans.XmlObject;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.Wrapper;
import org.mozilla.javascript.xml.XMLObject;
/**
* XMLHelper for JavaScript E4X using XmlBeans
*/
public class JavaScriptE4XXmlBeansHelper extends DefaultXMLHelper {
private Scriptable scope;
JavaScriptE4XXmlBeansHelper(ScriptEngine engine) {
Context cx = Context.enter();
try {
this.scope = cx.initStandardObjects();
} finally {
Context.exit();
}
}
public OMElement toOMElement(Object scriptXML) throws ScriptException {
if (scriptXML == null) {
return null;
}
if (!(scriptXML instanceof XMLObject)) {
return null;
}
// TODO: E4X Bug? Shouldn't need this copy, but without it the outer element gets lost???
Scriptable jsXML =
(Scriptable) ScriptableObject.callMethod((Scriptable) scriptXML, "copy", new Object[0]);
Wrapper wrapper =
(Wrapper) ScriptableObject.callMethod((XMLObject)jsXML, "getXmlObject", new Object[0]);
XmlObject xmlObject = (XmlObject) wrapper.unwrap();
try {
StAXOMBuilder builder = new StAXOMBuilder(xmlObject.newInputStream());
return builder.getDocumentElement();
} catch (XMLStreamException e) {
throw new ScriptException(e);
}
}
public Object toScriptXML(OMElement om) throws ScriptException {
if (om == null) {
return null;
}
Context cx = Context.enter();
try {
XmlObject xml = null;
try {
xml = XmlObject.Factory.parse(om.getXMLStreamReader());
} catch (Exception e) {
throw new ScriptException(e);
}
Object wrappedXML = cx.getWrapFactory().wrap(cx, scope, xml, XmlObject.class);
return cx.newObject(scope, "XML", new Object[]{wrappedXML});
} finally {
Context.exit();
}
}
}