org.apache.ode.jbi.EndpointReferenceContextImpl.java Source code

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Here is the source code for org.apache.ode.jbi.EndpointReferenceContextImpl.java

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/*
 * 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.ode.jbi;

import javax.jbi.servicedesc.ServiceEndpoint;
import javax.xml.namespace.QName;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.bpel.iapi.EndpointReference;
import org.apache.ode.bpel.iapi.EndpointReferenceContext;
import org.apache.ode.bpel.epr.MutableEndpoint;
import org.apache.ode.utils.DOMUtils;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import java.util.Map;
import java.util.HashMap;

/**
 * Implementation of the ODE {@link org.apache.ode.bpel.iapi.EndpointReferenceContext}
 * interface used by the BPEL engine to convert XML descriptions of endpoint
 * references (EPRs) into Java object representations. In the JBI context all
 * endpoint references are considered to be JBI
 * {@link javax.jbi.servicedesc.ServiceEndpoint}s are resolved by using the
 * {@link javax.jbi.component.ComponentContext#resolveEndpointReference(org.w3c.dom.DocumentFragment)}
 * method. Note that is is possible to resolve both "internal" and "external"
 * endpoint in this manner.  The schema to the internal end-point representation
 * is described on page 50 of the JBI specification 1.0.
 *
 */
public class EndpointReferenceContextImpl implements EndpointReferenceContext {
    private static final Log __log = LogFactory.getLog(EndpointReferenceContextImpl.class);

    private final OdeContext _ode;

    static final QName JBI_EPR = new QName("http://java.sun.com/jbi/end-point-reference", "end-point-reference");

    public EndpointReferenceContextImpl(OdeContext ode) {
        _ode = ode;
    }

    public EndpointReference resolveEndpointReference(Element epr) {
        QName elname = new QName(epr.getNamespaceURI(), epr.getLocalName());

        if (__log.isDebugEnabled()) {
            __log.debug("resolveEndpointReference:\n" + prettyPrint(epr));
        }
        if (!elname.equals(EndpointReference.SERVICE_REF_QNAME))
            throw new IllegalArgumentException(
                    "EPR root element " + elname + " should be " + EndpointReference.SERVICE_REF_QNAME);

        Document doc = DOMUtils.newDocument();
        DocumentFragment fragment = doc.createDocumentFragment();
        NodeList children = epr.getChildNodes();
        for (int i = 0; i < children.getLength(); ++i)
            if (children.item(i) instanceof Element)
                fragment.appendChild(doc.importNode(children.item(i), true));
        ServiceEndpoint se = _ode.getContext().resolveEndpointReference(fragment);
        if (se == null)
            return null;
        return new JbiEndpointReference(se);
    }

    public EndpointReference convertEndpoint(QName eprType, Element epr) {
        Document doc = DOMUtils.newDocument();
        DocumentFragment fragment = doc.createDocumentFragment();
        NodeList children = epr.getChildNodes();
        for (int i = 0; i < children.getLength(); ++i)
            fragment.appendChild(doc.importNode(children.item(i), true));
        ServiceEndpoint se = _ode.getContext().resolveEndpointReference(fragment);
        if (se == null)
            return null;

        return new JbiEndpointReference(se, eprType);

    }

    public static QName convertClarkQName(String name) {
        int pos = name.indexOf('}');
        if (name.startsWith("{") && pos > 0) {
            String ns = name.substring(1, pos);
            String lname = name.substring(pos + 1, name.length());
            return new QName(ns, lname);
        }
        return new QName(name);
    }

    private String prettyPrint(Element el) {
        try {
            return DOMUtils.prettyPrint(el);
        } catch (java.io.IOException ioe) {
            return ioe.getMessage();
        }
    }

    public Map getConfigLookup(EndpointReference epr) {
        Map m = new HashMap();
        m.put("service", ((JbiEndpointReference) epr).getServiceEndpoint().getServiceName());
        return m;
    }
}