Apache CXF example source code file (MessageImpl.java)

This example Apache CXF source code file (MessageImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Apache CXF tags/keywords

class, class, default_contents, default_contents_length, default_contents_length, dom, exchange, interceptorchain, io, map, messageimpl, messageimpl, object, object, string, t, util

The Apache CXF MessageImpl.java source code

/**
 * 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.cxf.message;

import java.io.InputStream;
import java.io.OutputStream;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;

import org.w3c.dom.Node;

import org.apache.cxf.Bus;
import org.apache.cxf.endpoint.Endpoint;
import org.apache.cxf.helpers.CastUtils;
import org.apache.cxf.interceptor.InterceptorChain;
import org.apache.cxf.io.DelegatingInputStream;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.transport.Destination;

public class MessageImpl extends StringMapImpl implements Message {
    private static final Class<?> DEFAULT_CONTENTS[];
    private static final int DEFAULT_CONTENTS_LENGTH;
    
    static {
        Class<?> tmps[];
        
        try {
            //if SAAJ is there, give it a slot
            Class<?> cls = Class.forName("javax.xml.soap.SOAPMessage");
            tmps = new Class<?>[] {
                XMLStreamReader.class, XMLStreamWriter.class,
                InputStream.class, OutputStream.class,
                List.class, Exception.class, Node.class, DelegatingInputStream.class,
                cls
            };
        } catch (Throwable e) {
            tmps = new Class<?>[] {
                XMLStreamReader.class, XMLStreamWriter.class,
                InputStream.class, OutputStream.class,
                List.class, Exception.class, Node.class, DelegatingInputStream.class
            };
        }
        DEFAULT_CONTENTS = tmps;
        DEFAULT_CONTENTS_LENGTH = tmps.length;
    }
    
    
    private Exchange exchange;
    private String id;
    private InterceptorChain interceptorChain;
    
    private Object[] defaultContents = new Object[DEFAULT_CONTENTS_LENGTH];
    private Map<Class contents;
    private Map<String, Object> contextCache;
    
    
    public MessageImpl() {
        //nothing
    }
    public MessageImpl(Message m) {
        super(m);
        if (m instanceof MessageImpl) {
            MessageImpl impl = (MessageImpl)m;
            exchange = impl.getExchange();
            id = impl.id;
            interceptorChain = impl.interceptorChain;
            defaultContents = impl.defaultContents;
            contents = impl.contents;
            contextCache = impl.contextCache;
        } else {
            throw new RuntimeException("Not a MessageImpl! " + m.getClass());
        }
    }
    
    public Collection<Attachment> getAttachments() {
        return CastUtils.cast((Collection<?>)get(ATTACHMENTS));
    }

    public void setAttachments(Collection<Attachment> attachments) {
        put(ATTACHMENTS, attachments);
    }

    public String getAttachmentMimeType() {
        //for sub class overriding
        return null;
    }
    
    public Destination getDestination() {
        return get(Destination.class);
    }

    public Exchange getExchange() {
        return exchange;
    }

    public String getId() {
        return id;
    }

    public InterceptorChain getInterceptorChain() {
        return this.interceptorChain;
    }

    @SuppressWarnings("unchecked")
    public <T> T getContent(Class format) {
        for (int x = 0; x < DEFAULT_CONTENTS_LENGTH; x++) {
            if (DEFAULT_CONTENTS[x] == format) {
                return (T)defaultContents[x];
            }
        }
        return contents == null ? null : (T)contents.get(format);
    }

    public <T> void setContent(Class format, Object content) {
        for (int x = 0; x < DEFAULT_CONTENTS_LENGTH; x++) {
            if (DEFAULT_CONTENTS[x] == format) {
                defaultContents[x] = content;
                return;
            }
        }
        if (contents == null) {
            contents = new IdentityHashMap<Class(6);
        }
        contents.put(format, content);
    }
    
    public <T> void removeContent(Class format) {
        for (int x = 0; x < DEFAULT_CONTENTS_LENGTH; x++) {
            if (DEFAULT_CONTENTS[x] == format) {
                defaultContents[x] = null;
                return;
            }
        }
        if (contents != null) {
            contents.remove(format);
        }
    }

    public Set<Class getContentFormats() {
        
        Set<Class c;
        if (contents == null) {
            c = new HashSet<Class();
        } else {
            c = new HashSet<Class(contents.keySet());
        }
        for (int x = 0; x < DEFAULT_CONTENTS_LENGTH; x++) {
            if (defaultContents[x] != null) {
                c.add(DEFAULT_CONTENTS[x]);
            }
        }
        return c;
    }

    public void setDestination(Destination d) {
        put(Destination.class, d);
    }

    public void setExchange(Exchange e) {
        this.exchange = e;
    }

    public void setId(String i) {
        this.id = i;
    }

    public void setInterceptorChain(InterceptorChain ic) {
        this.interceptorChain = ic;
    }
    public Object put(String key, Object value) {
        if (contextCache != null) {
            contextCache.put(key, value);
        }
        return super.put(key, value);
    }
    public Object getContextualProperty(String key) {
        if (contextCache == null) {
            calcContextCache();
        }
        return contextCache.get(key);
    }
    
    private void calcContextCache() {
        Map<String, Object> o = new HashMap() {
            public void putAll(Map<? extends String, ? extends Object> m) {
                if (m != null) {
                    super.putAll(m);
                }
            }
        };
        Exchange ex = getExchange();
        if (ex != null) {
            Bus b = ex.getBus();
            if (b != null) {
                o.putAll(b.getProperties());
            }
            Service sv = ex.getService(); 
            if (sv != null) {
                o.putAll(sv);
            }
            Endpoint ep = ex.getEndpoint(); 
            if (ep != null) {
                EndpointInfo ei = ep.getEndpointInfo();
                if (ei != null) {
                    o.putAll(ep.getEndpointInfo().getBinding().getProperties());
                    o.putAll(ep.getEndpointInfo().getProperties());
                }
                o.putAll(ep);
            }
        }
        o.putAll(ex);
        o.putAll(this);
        contextCache = o;
    }
    public static void copyContent(Message m1, Message m2) {
        for (Class<?> c : m1.getContentFormats()) {
            m2.setContent(c, m1.getContent(c));
        }
    }

    public void resetContextCache() {
        if (contextCache != null) {
            contextCache = null;
        }
    }

    public void setContextualProperty(String key, Object v) {
        if (contextCache != null && !containsKey(key)) {
            contextCache.put(key, v);
        }
    }
}