com.rest4j.BinaryResource.java Source code

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Here is the source code for com.rest4j.BinaryResource.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 com.rest4j;

import com.rest4j.impl.ResourceBase;
import org.apache.commons.io.IOUtils;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * A {@link Resource} that represents a binary entity. Can have a custom Etag and Content-Type.
 *
 * @author Joseph Kapizza <joseph@rest4j.com>
 */
public class BinaryResource extends ResourceBase {

    private String etag;
    private InputStream is;

    public BinaryResource(String contentType, String etag, InputStream is) {
        super(contentType);
        this.etag = etag;
        if (is == null)
            throw new NullPointerException();
        this.is = is;
    }

    /**
     * Create an entity containing the given binary data with Content-Type: application/octet-stream.
     */
    public BinaryResource(byte[] content) {
        super("application/octet-stream");
        this.is = new ByteArrayInputStream(content);
    }

    @Override
    public String getETag() {
        return etag;
    }

    @Override
    public void write(OutputStream os) throws IOException {
        IOUtils.copy(is, os);
        is.close();
    }

    @Override
    public void writeJSONP(OutputStream os, String callbackFunctionName) throws IOException {
        write(os);
    }
}