final Multimap<K, V1> fromMultimap;
    final EntryTransformer<? super K, ? super V1, V2> transformer;

    TransformedEntriesMultimap(
        Multimap<K, V1> fromMultimap, EntryTransformer<? super K, ? super V1, V2> transformer) {
      this.fromMultimap = checkNotNull(fromMultimap);
      this.transformer = checkNotNull(transformer);
    }

    Collection<V2> transform(@ParametricNullness K key, Collection<V1> values) {

 * </p>
 *
 * <p>
 * Example Usage:
 * </p>
 *
 * <pre>
 * XmlTransformer transformer = new XmlTransformer();
 * transformer.setNamespaceAware(true);
 * transformer.setCacheDuration(30);
 * transformer.addFieldRule("title", "/book/title/text()");
 * transformer.addFieldRule("author", "/book/author/name/text()");
 *
 * ResponseData responseData = new ResponseData();

crawler.crawlerContext.setMaxDepth(5);               // Limit crawl depth

// Use streaming for large files
container.singleton("fileTransformer", FileTransformer.class, transformer -> {
    transformer.setMaxContentSize(10 * 1024 * 1024); // 10MB limit
});
```

## Troubleshooting

### Common Issues

#### Connection Timeouts
```java
// Increase timeout values

        childUrlSet.remove(url);
    }

    /**
     * Get the transformer name.
     * @return transformer
     */
    public String getTransformerName() {
        return transformerName;
    }

    /**
     * Set the transformer name.
     * @param transformerName the name of the transformer to set
     */
    public void setTransformerName(final String transformerName) {

 * <p>
 * The {@link #getData(AccessResultData)} method allows retrieving the transformed data as a String (XML content),
 * a Map, or an instance of a specified class.
 * </p>
 *
 * <p>
 * Example usage:
 * </p>
 *
 * <pre>
 * XpathTransformer transformer = new XpathTransformer();
 * transformer.addFieldRule("title", "//title/text()");
 * transformer.addFieldRule("body", "//body/p/text()");
 *

<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />
	<include path="crawler/transformer.xml" />

	<component name="ruleManager"
		class="org.codelibs.fess.crawler.rule.impl.RuleManagerImpl" instance="prototype">
		<postConstruct name="addRule">
			<arg>sitemapsRule</arg>
		</postConstruct>

                        + responseProcessor + ", url: " + url);
            }
            final Transformer transformer = ((DefaultResponseProcessor) responseProcessor).getTransformer();
            final ResultData resultData = transformer.transform(responseData);
            final Object rawData = resultData.getRawData();
            if (rawData != null) {

                .<FileTransformer> singleton("fileTransformer", FileTransformer.class, transformer -> {
                    transformer.setName("fileTransformer");
                    transformer.setFeatureMap(featureMap);
                    transformer.setPropertyMap(propertyMap);
                    transformer.setChildUrlRuleMap(childUrlRuleMap);
                })

 * 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 org.codelibs.fess.crawler.transformer;

import org.codelibs.fess.unit.UnitFessTestCase;

public class FessTransformerTest extends UnitFessTestCase {

    @Override
    public void setUp() throws Exception {
        super.setUp();
    }

 * 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 org.codelibs.fess.crawler.transformer.impl;

import java.io.InputStream;

import org.apache.commons.io.IOUtils;
import org.codelibs.fess.crawler.entity.AccessResultDataImpl;
import org.codelibs.fess.crawler.entity.ResponseData;