org.apache.abdera2.protocol.client.AbderaBody.java Source code

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Here is the source code for org.apache.abdera2.protocol.client.AbderaBody.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  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.  For additional information regarding
 * copyright in this work, please see the NOTICE file in the top level
 * directory of this distribution.
 */
package org.apache.abdera2.protocol.client;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.abdera2.model.Base;
import org.apache.abdera2.model.Document;
import org.apache.abdera2.model.Element.Helper;
import org.apache.http.entity.mime.content.AbstractContentBody;

/**
 * Used with the MultipartRelatedEntity to include an Atom Entry as a 
 * multipart message part. This is primarily used internally by the 
 * Abdera client and there will be very little reason, if any, for 
 * applications to use this class directly. 
 */
public class AbderaBody extends AbstractContentBody {

    private final Base base;
    private final long len;

    /**
     * Create the body using the specified Abdera document or element. 
     * The content length will not be calculated automatically so the 
     * Content-Length header in the part will not be specified. The 
     * Content-Type will be automatically detected based on the type of
     * element passed in.
     */
    public AbderaBody(Base base) {
        this(base, false, null);
    }

    /**
     * Create the body using the specified Abdera document or element.
     * The content length will not be calculated. The Content-Type 
     * specified will be used. If contentType is null, the Content-Type 
     * will be automatically detected based on the type of element passed in.
     */
    public AbderaBody(Base base, String contentType) {
        this(base, false, contentType);
    }

    /**
     * Create the body using the specified Abdera document or element.
     * The content length will be automatically calculated if the 
     * calclen argument is true. The Content-Type will be automatically
     * detected based on the type of element passed in.
     */
    public AbderaBody(Base base, boolean calclen) {
        this(base, calclen, null);
    }

    /**
     * Create the body using the specified Abdera document or element.
     * The content length will be automatically calculated if the 
     * calclen argument is true. The Content-Type specified will be
     * used. If contentType is null, the Content-Type will be automatically
     * detected based on the type of element passed in.
     */
    public AbderaBody(Base base, boolean calclen, String contentType) {
        super(contentType != null ? contentType : Helper.getMimeType(base));
        this.base = base;
        if (calclen) {
            long l = -1;
            try {
                ByteArrayOutputStream out = new ByteArrayOutputStream();
                base.writeTo(out);
                l = out.toByteArray().length;
            } catch (Throwable t) {
            }
            len = l;
        } else {
            len = -1;
        }
    }

    public String getFilename() {
        return null;
    }

    public void writeTo(OutputStream out) throws IOException {
        base.writeTo(out);
    }

    public String getCharset() {
        if (base instanceof Document)
            return ((Document<?>) base).getCharset();
        return null;
    }

    public long getContentLength() {
        return len;
    }

    public String getTransferEncoding() {
        return "8bit";
    }

}