* specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl.resolver.artifact;

/**
 * The keys for Maven specific properties of artifacts. These properties "extend" (or supplement) the Resolver
 * core properties defined in {@link org.eclipse.aether.artifact.ArtifactProperties}.
 *
 * @see org.eclipse.aether.artifact.ArtifactProperties
 * @since 4.0.0

import org.eclipse.aether.repository.ArtifactRepository;

/**
 */
public class PluginVersionResolverStub implements PluginVersionResolver {

    public PluginVersionResult resolve(PluginVersionRequest request) throws PluginVersionResolutionException {
        return new PluginVersionResult() {
            public String getVersion() {
                return "0.42";
            }

import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RemoteRepository;

/**
 * Collects settings required to resolve the version for a plugin.
 *
 * @since 3.0
 */
public class DefaultPluginVersionRequest implements PluginVersionRequest {

    private String groupId;

    private String artifactId;

     *            {@code null}.
     * @return The result of the prefix resolution, never {@code null}.
     * @throws NoPluginFoundForPrefixException If the plugin prefix could not be resolved.
     */
    PluginPrefixResult resolve(PluginPrefixRequest request) throws NoPluginFoundForPrefixException;

public interface BeanConfigurationValuePreprocessor {

    /**
     * Preprocesses the specified bean configuration value. The optional type provided to this method is a hint (not a
     * requirement) for the preprocessor to resolve the value to a compatible value or a (string) value than can be
     * unmarshalled into that type. The preprocessor is not required to perform any type conversion but should rather
     * filter out incompatible values from its result.

     */
    Set<Artifact> resolve(MavenProject project, Collection<String> scopesToResolve, MavenSession session)
            throws ArtifactResolutionException, ArtifactNotFoundException;

    /**
     * Resolves the transitive dependencies of the specified project.
     *
     * @param project         The project whose dependencies should be resolved, must not be {@code null}.

import org.apache.maven.api.model.Parent;

/**
 * Resolves a POM from its coordinates.
 */
public interface ModelResolver extends Service {

    /**
     * Tries to resolve the POM for the specified parent coordinates possibly updating {@code parent}.
     *
     * @param session The session to use to resolve the model, must not be {@code null}.
     * @param parent The parent coordinates to resolve, must not be {@code null}.

      <configuration>
        <![CDATA[
    <offline>true</offline>
    ]]></configuration>
      <description>
        <![CDATA[
      Flags the system as offline, to prevent accessing the network to resolve artifacts or execute plugins.

      NOTE: It's also possible to switch to offline mode on a per-build basis, using the '-o' command-line option.
    ]]></description>
    </expression>
    <expression>

    @Inject
    public DefaultVersionResolver(RepositorySystem repositorySystem) {
        this.repositorySystem = repositorySystem;
    }

    @Override
    public VersionResolverResult resolve(VersionResolverRequest request) throws VersionResolverException {
        nonNull(request, "request");
        InternalSession session = InternalSession.from(request.getSession());

        try {

import static org.apache.maven.internal.impl.Utils.nonNull;

@Named
@Singleton
public class DefaultArtifactResolver implements ArtifactResolver {

    @Override
    public ArtifactResolverResult resolve(ArtifactResolverRequest request)
            throws ArtifactResolverException, IllegalArgumentException {
        nonNull(request, "request");
        InternalSession session = InternalSession.from(request.getSession());