/*
* Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.synapse.mediators.bsf;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.util.AXIOMUtil;
import org.apache.bsf.xml.DefaultXMLHelper;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.xml.XMLObject;
import javax.script.ScriptException;
import javax.xml.stream.XMLStreamException;
/**
* This class will provide the operation to getPayloadXML and setPayload of ScriptMessageContext to convert
* between XML and ScriptXML object
* since there is an api change in rhino17,This class is provided instead of getting Helper class by
* XMLHelper.getArgHelper(engine) in bsf
*/
public class JavaScriptXmlHelper extends DefaultXMLHelper {
private final Scriptable scope;
JavaScriptXmlHelper() {
Context cx = Context.enter();
try {
this.scope = cx.initStandardObjects();
} finally {
Context.exit();
}
}
/**
* This method will convert the message payload in to xml
*
* @param scriptXML from java script Scriptable
* @return XML content as OMElement wrapped in Scriptable object
* @throws ScriptException when error
*/
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]);
OMElement omElement;
try {
omElement = AXIOMUtil.stringToOM((String) ScriptableObject.callMethod(jsXML, "toXMLString", new Object[0]));
} catch (XMLStreamException e) {
throw new ScriptException(e);
}
return omElement;
}
/**
* This method will convert the message payload in to ScriptXML Object
*
* @param omElement
* @return Scriptable object by adding the xml content
* @throws ScriptException when error
*/
public Object toScriptXML(OMElement omElement)
throws ScriptException {
if (omElement == null) {
return null;
}
Context cx = Context.enter();
try {
XmlObject xml;
try {
xml = XmlObject.Factory.parse(omElement.getXMLStreamReader());
} catch (XmlException e) {
throw new ScriptException(e);
}
Object wrappedXML = cx.getWrapFactory().wrap(cx, this.scope, xml, XmlObject.class);
Object obj = cx.newObject(this.scope, "XML", new Object[]{wrappedXML});
return obj;
} finally {
Context.exit();
}
}
}