org.apache.pluto.driver.services.container.PortletWindowThread.java Source code

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Here is the source code for org.apache.pluto.driver.services.container.PortletWindowThread.java

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/*
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * 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.pluto.driver.services.container;

import java.io.IOException;
import java.io.Serializable;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import javax.portlet.Event;
import javax.portlet.PortletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.namespace.QName;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pluto.EventContainer;
import org.apache.pluto.PortletContainerException;
import org.apache.pluto.PortletWindow;
import org.apache.pluto.driver.core.PortalServletRequest;
import org.apache.pluto.internal.impl.EventImpl;
import org.apache.pluto.om.portlet.EventDefinition;
import org.apache.pluto.om.portlet.PortletApplicationDefinition;
import org.apache.pluto.spi.optional.PortletContextService;

public class PortletWindowThread extends Thread {

    /** Logger. */
    private static final Log LOG = LogFactory.getLog(PortletWindowThread.class);

    private EventProviderImpl eventProvider;

    private PortletWindow portletWindow;

    private EventContainer eventContainer;

    /** PortletRegistryService used to obtain PortletApplicationConfig objects */
    private PortletContextService portletContextService;

    private List<Event> events = new ArrayList<Event>();

    public PortletWindowThread(ThreadGroup group, String name, EventProviderImpl eventProvider,
            PortletWindow window, EventContainer eventContainer, PortletContextService portletContextService) {
        super(group, name);
        this.eventProvider = eventProvider;
        this.portletWindow = window;
        this.eventContainer = eventContainer;
        this.portletContextService = portletContextService;
    }

    /* (non-Javadoc)
     * @see java.lang.Thread#run()
     */
    @Override
    public void run() {
        super.run();
        while (events.size() > 0) {
            HttpServletRequest req = new PortalServletRequest(eventProvider.getRequest(), this.portletWindow);
            HttpServletResponse res = eventProvider.getResponse();
            try {
                //            synchronized (this) {
                Event event = events.remove(0);
                Object value = event.getValue();

                XMLStreamReader xml = null;
                try {
                    if (value instanceof String) {
                        String in = (String) value;
                        xml = XMLInputFactory.newInstance().createXMLStreamReader(new StringReader(in));
                    }
                } catch (XMLStreamException e1) {
                    throw new IllegalStateException(e1);
                } catch (FactoryConfigurationError e1) {
                    throw new IllegalStateException(e1);
                }

                if (xml != null) {
                    //XMLStreamReader xml = (XMLStreamReader) event.getValue();

                    //provider.getEventDefinition(event.getQName());
                    try {
                        // now test if object is jaxb
                        EventDefinition eventDefinitionDD = getEventDefintion(event.getQName());

                        ClassLoader loader = portletContextService.getClassLoader(
                                portletWindow.getPortletEntity().getPortletDefinition().getApplication().getName());
                        Class<? extends Serializable> clazz = loader.loadClass(eventDefinitionDD.getValueType())
                                .asSubclass(Serializable.class);

                        JAXBContext jc = JAXBContext.newInstance(clazz);
                        Unmarshaller unmarshaller = jc.createUnmarshaller();

                        //                       unmarshaller.setEventHandler(new javax.xml.bind.helpers.DefaultValidationEventHandler());

                        JAXBElement result = unmarshaller.unmarshal(xml, clazz);

                        event = new EventImpl(event.getQName(), (Serializable) result.getValue());
                    } catch (JAXBException e) {
                        throw new IllegalStateException(e);
                    } catch (ClassCastException e) {
                        throw new IllegalStateException(e);
                    } catch (ClassNotFoundException e) {
                        throw new IllegalStateException(e);
                    } catch (PortletContainerException e) {
                        throw new IllegalStateException(e);
                    }
                }
                eventContainer.fireEvent(req, res, portletWindow, event);
                //            }
            } catch (PortletException e) {
                LOG.warn(e);
            } catch (IOException e) {
                LOG.warn(e);
            } catch (PortletContainerException e) {
                LOG.warn(e);
            }
        }
    }

    public void addEvent(Event event) {
        this.events.add(event);
    }

    private EventDefinition getEventDefintion(QName name) throws PortletContainerException {
        PortletApplicationDefinition appDD = portletWindow.getPortletEntity().getPortletDefinition()
                .getApplication();
        for (EventDefinition def : appDD.getEventDefinitions()) {
            if (def.getQName() != null) {
                if (def.getQName().equals(name))
                    return def;
            } else {
                QName tmp = new QName(appDD.getDefaultNamespace(), def.getName());
                if (tmp.equals(name))
                    return def;
            }
        }
        throw new IllegalStateException();
    }

}