* @param outputFile the file where the generated thumbnail will be saved
     * @return true if the thumbnail was successfully generated, false otherwise
     */
    @Override
    public boolean generate(final String thumbnailId, final File outputFile) {
        if (logger.isDebugEnabled()) {
            logger.debug("Generate Thumbnail: {}", thumbnailId);
        }

        // Test successful thumbnail generation
        String thumbnailId = "test-thumbnail-001";
        assertTrue(thumbnailGenerator.generate(thumbnailId, tempOutputFile));
        assertTrue(tempOutputFile.exists());
    }

    @Test
    public void test_generate_withNullThumbnailId() {
        // Test generation with null thumbnail ID

            svgDocMap.put("thumbnail", "http://example.com/image.svg");
            svgDocMap.put("mimetype", "image/svg+xml");
            assertTrue("SVG MIME type should be target", generator.isTarget(svgDocMap));

            // Test case 2: Different MIME type should not match
            Map<String, Object> pngDocMap = new HashMap<>();
            pngDocMap.put("thumbnail", "http://example.com/image.png");

import org.codelibs.fess.util.SystemUtil;

import jakarta.servlet.ServletContext;

/**
 * Job class for generating thumbnails for documents in the search engine.
 * This job executes the ThumbnailGenerator process as a separate JVM process
 * to create thumbnail images for supported document types.
 */
public class GenerateThumbnailJob extends ExecJob {
    /** Logger for this class. */

    String getName();

    /**
     * Generates a thumbnail for the given thumbnail ID and saves it to the output file.
     *
     * @param thumbnailId the unique identifier for the thumbnail
     * @param outputFile the file where the generated thumbnail will be saved
     * @return true if the thumbnail was successfully generated, false otherwise
     */
    boolean generate(String thumbnailId, File outputFile);

    /**

/**
 * Manager class for handling thumbnail generation and management.
 * Provides functionality to generate, cache, and serve thumbnail images for documents.
 */
public class ThumbnailManager {
    private static final String NOIMAGE_FILE_SUFFIX = ".txt";

    /**
     * Default directory name for thumbnails.
     */
    protected static final String THUMBNAILS_DIR_NAME = "thumbnails";

    /**

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.thumbnail.impl;

import java.io.File;

/**
 * Empty implementation of thumbnail generator that does not generate any thumbnails.
 * This class is used as a no-op thumbnail generator when thumbnail generation is disabled
 * or when no specific thumbnail generator is configured.
 */
public class EmptyGenerator extends BaseThumbnailGenerator {

 */
package org.codelibs.fess.app.web.thumbnail;

import java.util.HashMap;
import java.util.Map;

import org.lastaflute.web.validation.Required;

import jakarta.validation.constraints.Size;

/**
 * Form class for thumbnail request parameters.
 * Contains the document ID and query parameters needed to retrieve thumbnail images.
 */
public class ThumbnailForm {

    /**

        }
        return value;
    }

    /**
     * Updates the thumbnail field in the search index.
     * @param thumbnailId The thumbnail ID.
     * @param value The thumbnail value to update.
     */
    protected void updateThumbnailField(final String thumbnailId, final String value) {
        // TODO bulk
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

     * Creates a new instance of the thumbnail purging job with default expiry time (30 days).
     */
    public PurgeThumbnailJob() {
        // Default constructor
    }

    /** Expiration time for thumbnails in milliseconds (default: 30 days) */
    private long expiry = 30 * 24 * 60 * 60 * 1000L;

    /**
     * Executes the thumbnail purging job.