MemoryBitCache.java

/**
 * 
 */
package org.commcare.android.util.bitcache;

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

/**
 * @author ctsims
 *
 */
public class MemoryBitCache implements BitCache {
    
    ByteArrayOutputStream bos;
    byte[] data;
    
    protected MemoryBitCache() {
        
    }

    /* (non-Javadoc)
     * @see org.commcare.android.util.bitcache.BitCache#initializeCache()
     */
    public void initializeCache() {
        bos = new ByteArrayOutputStream();
        data = null;
    }

    /* (non-Javadoc)
     * @see org.commcare.android.util.bitcache.BitCache#getCacheStream()
     */
    public OutputStream getCacheStream() {
        return bos;
    }

    /* (non-Javadoc)
     * @see org.commcare.android.util.bitcache.BitCache#retrieveCache()
     */
    public InputStream retrieveCache() {
        if(data == null) {
            data = bos.toByteArray();
            bos = null;
        }
        return new ByteArrayInputStream(data);
    }
    public void release() {
        bos = null;
        data = null;
    }
}