ByteContent.java

/*
 * ByteContent
 */
package gov.usgs.earthquake.product;

import gov.usgs.util.StreamUtils;

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

/**
 * Content stored in a byte array.
 */
public class ByteContent extends AbstractContent {

    /** The actual content. */
    private final byte[] content;

    /**
     * Default constructor accepts a byte array.
     * 
     * @param content
     *            the actual content. This should not be null.
     */
    public ByteContent(final byte[] content) {
        this.content = content;
        setLength(Long.valueOf(content.length));
    }

    /**
     * Convert any Content into ByteContent.
     * 
     * Any content is read from the InputStream into a new underlying byte
     * array.
     * 
     * @param content
     *            existing content to read.
     * @throws IOException
     *             when errors occur reading content.
     */
    public ByteContent(final Content content) throws IOException {
        super(content);
        this.content = StreamUtils.readStream(content.getInputStream());
        setLength(Long.valueOf(this.content.length));
    }

    /**
     * @return a ByteArrayInputStream for the wrapped content.
     */
    public InputStream getInputStream() throws IOException {
        return new ByteArrayInputStream(content);
    }

    /**
     * @return the wrapped byte array.
     */
    public byte[] getByteArray() {
        return content;
    }

    /**
     * Free any resources associated with this content.
     */
    public void close() {
        // nothing to free
    }
}