/**
*
* Copyright 2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "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.
*/
package org.apache.geronimo.kernel.config;
import java.util.List;
import java.util.Collection;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Collections;
import java.util.Set;
import java.io.File;
import java.net.MalformedURLException;
import org.apache.geronimo.kernel.repository.ArtifactResolver;
import org.apache.geronimo.kernel.repository.MissingDependencyException;
import org.apache.geronimo.kernel.repository.Dependency;
import org.apache.geronimo.kernel.repository.Artifact;
import org.apache.geronimo.kernel.repository.Repository;
import org.apache.geronimo.kernel.repository.ImportType;
/**
* @version $Rev: 409817 $ $Date: 2006-05-27 03:56:38 -0400 (Sat, 27 May 2006) $
*/
public class ConfigurationResolver {
private final Artifact configurationId;
private final ArtifactResolver artifactResolver;
private final Collection repositories;
/**
* file or configstore used to resolve classpath parts
*/
private final File baseDir;
private final ConfigurationStore configurationStore;
/**
* For nested configurations, the module name will be non-null.
*/
private final String moduleName;
public ConfigurationResolver(Artifact configurationId, File baseDir) {
if (configurationId == null) throw new NullPointerException("configurationId is null");
this.configurationId = configurationId;
this.baseDir = baseDir;
artifactResolver = null;
repositories = Collections.EMPTY_SET;
configurationStore = null;
moduleName = null;
}
public ConfigurationResolver(ConfigurationData configurationData, Collection repositories, ArtifactResolver artifactResolver) {
if (configurationData == null) throw new NullPointerException("configurationData is null");
if (repositories == null) repositories = Collections.EMPTY_SET;
configurationId = configurationData.getId();
this.artifactResolver = artifactResolver;
this.repositories = repositories;
configurationStore = configurationData.getConfigurationStore();
if (null != configurationData.getInPlaceConfigurationDir()) {
baseDir = configurationData.getInPlaceConfigurationDir();
} else {
baseDir = configurationData.getConfigurationDir();
}
moduleName = null;
}
private ConfigurationResolver(Artifact configurationId, ArtifactResolver artifactResolver, Collection repositories, File baseDir, ConfigurationStore configurationStore, String moduleName) {
this.configurationId = configurationId;
this.artifactResolver = artifactResolver;
this.repositories = repositories;
this.baseDir = baseDir;
this.configurationStore = configurationStore;
this.moduleName = moduleName;
}
public ConfigurationResolver createChildResolver(String moduleName) {
if (moduleName == null) throw new NullPointerException("moduleName is null");
if (this.moduleName != null) {
moduleName = this.moduleName + '/' + moduleName;
}
File childBaseDir = null;
if (baseDir != null) {
childBaseDir = new File(baseDir, moduleName);
}
return new ConfigurationResolver(configurationId, artifactResolver, repositories, childBaseDir, configurationStore, moduleName);
}
public File resolve(Artifact artifact) throws MissingDependencyException {
for (Iterator j = repositories.iterator(); j.hasNext();) {
Repository repository = (Repository) j.next();
if (repository.contains(artifact)) {
File file = repository.getLocation(artifact);
return file;
}
}
throw new MissingDependencyException("Unable to resolve dependency " + artifact);
}
public Set resolve(String pattern) throws MalformedURLException, NoSuchConfigException {
if (configurationStore != null) {
Set matches = configurationStore.resolve(configurationId, moduleName, pattern);
return matches;
} else if (baseDir != null) {
Set matches = IOUtil.search(baseDir, pattern);
return matches;
} else {
throw new IllegalStateException("No configurationStore or baseDir supplied so paths can not be resolved");
}
}
public List resolveTransitiveDependencies(Collection parents, List dependencies) throws MissingDependencyException {
List resolvedDependencies = new ArrayList();
for (Iterator iterator = dependencies.iterator(); iterator.hasNext();) {
Dependency dependency = resolveDependency(parents, (Dependency) iterator.next());
if (!resolvedDependencies.contains(dependency)) {
resolvedDependencies.add(dependency);
List childDependencies = getChildDependencies(dependency);
if (!childDependencies.isEmpty()) {
childDependencies = resolveTransitiveDependencies(parents, childDependencies);
resolvedDependencies.addAll(childDependencies);
}
}
}
return resolvedDependencies;
}
private Dependency resolveDependency(Collection parents, Dependency dependency) throws MissingDependencyException {
Artifact artifact = dependency.getArtifact();
// if it is already resolved we are done
if (artifact.isResolved()) {
return dependency;
}
// we need an artifact resolver at this point
if (artifactResolver == null) {
throw new MissingDependencyException("Artifact is not resolved and there no artifact resolver available: " + artifact);
}
// resolve the artifact
artifact = artifactResolver.resolveInClassLoader(artifact, parents);
// build a new dependency object to contain the resolved artifact
Dependency resolvedDependency = new Dependency(artifact, dependency.getImportType());
return resolvedDependency;
}
private ArrayList getChildDependencies(Dependency dependency) {
ArrayList childDependencies = new ArrayList();
for (Iterator repositoryIterator = repositories.iterator(); repositoryIterator.hasNext();) {
Repository repository = (Repository) repositoryIterator.next();
if (repository.contains(dependency.getArtifact())) {
// get the child artifacts
LinkedHashSet childArtifacts = repository.getDependencies(dependency.getArtifact());
for (Iterator artifactIterator = childArtifacts.iterator(); artifactIterator.hasNext();) {
Artifact artifact = (Artifact) artifactIterator.next();
// add each child as a classes-only dependency
childDependencies.add(new Dependency(artifact, ImportType.CLASSES));
}
}
}
return childDependencies;
}
}