"AS IS" BASIS, 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.
-->

<plexus>
  <components>
    <component>
      <role>org.apache.maven.artifact.resolver.ArtifactResolver</role>
      <role-hint>default</role-hint>
      <implementation>org.apache.maven.artifact.resolver.DefaultArtifactResolver</implementation>

 * This is only necessary for default components using @Typed that want to support overriding.
 *
 * As a non-default component this now gets a negative priority relative to other implementations
 * of the same interface. Since we want to allow overriding this doesn't matter in this case.
 * (if it did we could add @Priority of 0 to match the priority given to default components.)
 *

                    "componentName is not set. Please specify a valid component name for the pooled object factory.");
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Creating new pooled object for component: {}", componentName);
        }
        final Object component = crawlerContainer.getComponent(componentName);
        if (component == null) {
            throw new IllegalStateException(

            clientFactoryList.remove(0);
        }
    }

    /**
     * Registers a client component with a regular expression.
     * The component will be loaded into all registered CrawlerClientFactories.
     * @param regex The regular expression to match URLs.
     * @param componentName The name of the component to register.
     */
    public synchronized void register(final String regex, final String componentName) {

Once the ClassRealm has been populated and all Plexus components have been discovered a lookup can be performed to retrieve the primary plugin component. Currently the component would need to be looked up and then the BasicComponentConfigurator would need to configure the component with a given Plexus configuration. We will discuss later how we would retrieve the Plexus configuration required for a given plugin.

import org.eclipse.aether.RepositorySystemSession;

/**
 * Helps to provide backward-compatibility with plugins that use legacy components. <strong>Warning:</strong> This is an
 * internal utility component that is only public for technical reasons, it is not part of the public API. In
 * particular, this component can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
@Named
@Singleton

        }

        // Check individual components
        String[] components = path.split("[/\\\\]");
        for (String component : components) {
            if (component.length() > MAX_PATH_COMPONENT_SIZE) {
                failedValidations.incrementAndGet();
                log.warn("Path component exceeds maximum length: {}", component.length());
                throw new SmbException("Path component too long");

 * the fact that the problem reporter has/should not have information about the calling context and hence cannot provide
 * an expressive source hint for the model problem. Instead, the source hint is configured by the model builder before
 * it delegates to other components that potentially encounter problems. Then, the problem reporter can focus on

 * internal utility interface that is only public for technical reasons, it is not part of the public API. In
 * particular, this interface can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
public interface LegacySupport {

    /**
     * Sets the currently active session. Some legacy components are basically stateful and their API is missing

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
    "http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
    <component name="crawler" class="org.codelibs.fess.crawler.Crawler" instance="prototype"/>
    <component name="httpClient" class="org.codelibs.fess.crawler.client.http.HcHttpClient" instance="singleton"/>