org.apache.juddi.jaxb.EntityCreator.java Source code

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Here is the source code for org.apache.juddi.jaxb.EntityCreator.java

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/*
 * Copyright 2001-2009 The Apache Software Foundation.
 * 
 * Licensed 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.juddi.jaxb;

/**
 * @author <a href="mailto:jfaath@apache.org">Jeff Faath</a>
 * @author <a href="mailto:kstam@apache.org">Kurt T Stam</a>
 */
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.net.URL;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * This class is the logical opposite of PrintUDDI. It will create
 * UDDI objects from a string or file.
 * @see PrintUDDI
 * @author unknown, but probably Kurt Stam
 */
public class EntityCreator {

    public static final String UDDIv3_Package = "org.uddi.api_v3";
    public static final String JUDDIv3_Package = "org.apache.juddi.api_v3";

    private static Log logger = LogFactory.getLog(EntityCreator.class);

    /**
     * Builds UDDI data from a document, URL, file, etc
     * @param fileName
     * @param thePackage
     * @return UDDI entity from the file or null
     * @throws JAXBException
     * @throws IOException 
     */
    @SuppressWarnings("rawtypes")
    public static Object buildFromDoc(String fileName, String thePackage) throws JAXBException, IOException {
        Object obj = null;
        File f = new File(fileName);
        URL url = null;
        if (f.exists()) {
            url = f.toURI().toURL();
        }
        if (url == null) {
            url = Thread.currentThread().getContextClassLoader().getResource(fileName);
        }
        if (url == null) {
            logger.error("Could not find resource: " + fileName);
        } else {
            InputStream resourceStream = url.openStream();

            JAXBContext jc = JAXBContext.newInstance(thePackage);
            Unmarshaller unmarshaller = jc.createUnmarshaller();
            obj = ((JAXBElement) unmarshaller.unmarshal(resourceStream)).getValue();
        }
        return obj;
    }

    /**
     * converts a XML in a String to a UDDI entity
     * @param source
     * @param thePackage
     * @return UDDI entity from the file
     * @throws JAXBException
     * @throws IOException 
     */
    @SuppressWarnings("rawtypes")
    public static Object buildFromString(String source, String thePackage) throws JAXBException, IOException {
        Object obj = null;
        JAXBContext jc = JAXBContext.newInstance(thePackage);
        Unmarshaller unmarshaller = jc.createUnmarshaller();
        obj = ((JAXBElement) unmarshaller.unmarshal(new StringReader(source)));
        return obj;
    }

    /**
     * Only use this class for debugging purposes. Output may not be valid XML
     * @param obj
     * @param thePackage
     * @throws JAXBException
     * @deprecated
     */
    @Deprecated
    public static void outputEntity(Object obj, String thePackage) throws JAXBException {
        JAXBContext jc = JAXBContext.newInstance(thePackage);
        Marshaller marshaller = jc.createMarshaller();
        marshaller.marshal(
                new JAXBElement<Object>(new javax.xml.namespace.QName("uri", "local"), Object.class, obj),
                System.out);

    }

}