}

    /*
     * (non-Javadoc)
     *
     * @see
     * org.codelibs.fess.crawler.transformer.Transformer#getData(org.codelibs.fess.crawler.entity
     * .AccessResultData)
     */
    @Override
    public Object getData(final AccessResultData<?> accessResultData) {
        // check transformer name
        if (!getName().equals(accessResultData.getTransformerName())) {

        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer(new StreamSource(stylesheet));

        System.out.format("=> transformer %s (%s)%n", transformer, transformer.getClass().getName());

        if (destDir.length() > 0) {
            transformer.setParameter("base.dir", destDir + "/");
        }

            Transformer transformer = factory.newTransformer()
            if (indent) {
                transformer.setOutputProperty(OutputKeys.INDENT, "yes")
            }
            transformer.setOutputProperty(OutputKeys.METHOD, "xml")
            transformer.setOutputProperty(OutputKeys.MEDIA_TYPE, "text/xml")
            transformer.transform(new DOMSource(root), new StreamResult(stream))
        }

Shinsuke Sugaya <******@****.***> 1444529815 +0900

    @Inject
    public DefaultTransformerManager(Map<String, PomArtifactTransformer> transformers) {
        this.transformers = requireNonNull(transformers);
    }

    @Override
    public InstallRequest remapInstallArtifacts(RepositorySystemSession session, InstallRequest request) {
        for (PomArtifactTransformer transformer : transformers.values()) {

        // Test that build POM deployment is enabled by default
        ConsumerPomArtifactTransformer transformer = new ConsumerPomArtifactTransformer((s, p, f) -> null);

        RepositorySystemSession session = createMockSession(Map.of());
        DeployRequest request = createDeployRequestWithConsumerPom();

        DeployRequest result = transformer.remapDeployArtifacts(session, request);

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

import org.codelibs.fess.crawler.transformer.Transformer;

/**
 * An abstract base class for transformers.
 * Provides basic implementation for managing the transformer's name.
 *
 */
public abstract class AbstractTransformer implements Transformer {

    /**
     * Creates a new instance of AbstractTransformer.
     */

        }
    }

    static class ExtensionInterpolator extends MavenTransformer {
        ExtensionInterpolator(UnaryOperator<String> transformer) {
            super(transformer);
        }

        public XmlNode transform(XmlNode node) {
            return super.transform(node);
        }
    }

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

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.deployment.DeployRequest;
import org.eclipse.aether.installation.InstallRequest;

/**
 * Maven POM transformer.
 * TODO: rename this interface to "Transformer" as it can do much more than just transform POM.
 * @since TBD
 */
public interface PomArtifactTransformer {
    InstallRequest remapInstallArtifacts(RepositorySystemSession session, InstallRequest request);