diff options
Diffstat (limited to 'sca-java-1.x/tags/1.2.1/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/builder')
-rw-r--r-- | sca-java-1.x/tags/1.2.1/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/builder/impl/ContributionDependencyBuilderImpl.java | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.2.1/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/builder/impl/ContributionDependencyBuilderImpl.java b/sca-java-1.x/tags/1.2.1/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/builder/impl/ContributionDependencyBuilderImpl.java new file mode 100644 index 0000000000..9d96b7783d --- /dev/null +++ b/sca-java-1.x/tags/1.2.1/modules/workspace-impl/src/main/java/org/apache/tuscany/sca/workspace/builder/impl/ContributionDependencyBuilderImpl.java @@ -0,0 +1,135 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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.tuscany.sca.workspace.builder.impl; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.logging.Level; +import java.util.logging.Logger; + +import org.apache.tuscany.sca.assembly.builder.Problem; +import org.apache.tuscany.sca.assembly.builder.Problem.Severity; +import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl; +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.Export; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.workspace.Workspace; +import org.apache.tuscany.sca.workspace.builder.ContributionDependencyBuilder; +import org.apache.tuscany.sca.workspace.builder.ContributionDependencyBuilderMonitor; + +/** + * A contribution dependency builder. + * + * @version $Rev$ $Date$ + */ +public class ContributionDependencyBuilderImpl implements ContributionDependencyBuilder { + private final static Logger logger = Logger.getLogger(ContributionDependencyBuilderImpl.class.getName()); + + private ContributionDependencyBuilderMonitor monitor; + + /** + * Constructs a new ContributionDependencyBuilder. + */ + public ContributionDependencyBuilderImpl(ContributionDependencyBuilderMonitor monitor) { + + if (monitor == null) { + // Create a default monitor that logs using the JDK logger. + monitor = new ContributionDependencyBuilderMonitor() { + public void problem(Problem problem) { + if (problem.getSeverity() == Severity.INFO) { + logger.info(problem.toString()); + } else if (problem.getSeverity() == Severity.WARNING) { + logger.warning(problem.toString()); + } else if (problem.getSeverity() == Severity.ERROR) { + if (problem.getCause() != null) { + logger.log(Level.SEVERE, problem.toString(), problem.getCause()); + } else { + logger.severe(problem.toString()); + } + } + } + }; + } + + this.monitor = monitor; + } + + /** + * Calculate the set of contributions that a contribution depends on. + * @param workspace + * @param contribution + * @return + */ + public List<Contribution> buildContributionDependencies(Workspace workspace, Contribution contribution) { + List<Contribution> dependencies = new ArrayList<Contribution>(); + Set<Contribution> set = new HashSet<Contribution>(); + + dependencies.add(contribution); + set.add(contribution); + addContributionDependencies(workspace, contribution, dependencies, set); + + Collections.reverse(dependencies); + return dependencies; + } + + /** + * Analyze a contribution and add its dependencies to the given dependency set. + * @param workspace + * @param contribution + * @param dependencies + * @param set + */ + private void addContributionDependencies(Workspace workspace, Contribution contribution, List<Contribution> dependencies, Set<Contribution> set) { + + // Go through the contribution imports + for (Import import_: contribution.getImports()) { + boolean resolved = false; + + // Go through all contribution candidates and their exports + for (Contribution dependency: workspace.getContributions()) { + for (Export export: dependency.getExports()) { + + // If an export from a contribution matches the import in hand + // add that contribution to the dependency set + if (import_.match(export)) { + resolved = true; + + if (!set.contains(dependency)) { + set.add(dependency); + dependencies.add(dependency); + + // Now add the dependencies of that contribution + addContributionDependencies(workspace, dependency, dependencies, set); + } + } + } + } + + if (!resolved) { + // Record import resolution issue + monitor.problem(new ProblemImpl(Severity.WARNING, "Unresolved import", import_)); + } + } + } + +} |