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package com.alogient.cameleon.sdk.content.service;

import com.alogient.cameleon.sdk.content.vo.media.ImageEntry;

import java.io.IOException;
import java.io.InputStream;
import java.util.Date;

/**
 * User: J?r?me Mirc
 * Date: 9-Sep-2009
 * Time: 9:31:58 AM
 */
public interface ImageService {

    /**
     * Retrieve an image
     * @param imageEntry image entry
     * @return the image
     * @throws IOException if the image can't be retrieved
     */
    public byte[] getImage(ImageEntry imageEntry) throws IOException;

    /**
     * Check if the image is available
     * @param imageEntry describe an image
     * @return true if the image exists, false otherwise.
     */
    public boolean isImageAvailableOnLocal(ImageEntry imageEntry);

    /**
     * Retrieve the last time when the image has been modified
     * @param imageEntry the image entry
     * @return the last modify time
     */
    public Date getLastModifyTime(ImageEntry imageEntry);

    /**
     * Save the image
     * @param imageEntry the imageEntry
     * @param imageStream the image inputstream
     * @throws IOException if the image can't be saved
     */
    public void save(ImageEntry imageEntry, InputStream imageStream) throws IOException;
}