| /* |
| * 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.maven.plugin.coreit; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.apache.maven.plugin.AbstractMojo; |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.apache.maven.plugin.MojoFailureException; |
| import org.apache.maven.plugins.annotations.LifecyclePhase; |
| import org.apache.maven.plugins.annotations.Mojo; |
| import org.apache.maven.plugins.annotations.Parameter; |
| |
| /** |
| * Creates a properties file with the effective values of some user-defined expressions. Unlike Maven's built-in |
| * expression syntax for interpolation, these expressions use forward slashes to navigate down the object graph and |
| * support access to individual collection/array elements. Furthermore, the result of an expression need not be a scalar |
| * value but can also be a collection/array or a bean-like object (from the Maven model). For example, the expression |
| * "project/dependencies/0" would extract the first project dependency. In more detail, this example expression could |
| * output the following keys to the properties file: |
| * |
| * <pre> |
| * project.dependencies.0.groupId = org.apache.maven |
| * project.dependencies.0.artifactId = maven-project |
| * project.dependencies.0.type = jar |
| * project.dependencies.0.version = 2.0 |
| * project.dependencies.0.optional = false |
| * project.dependencies.0.exclusions = 2 |
| * project.dependencies.0.exclusions.0.groupId = plexus |
| * project.dependencies.0.exclusions.0.artifactId = plexus-utils |
| * project.dependencies.0.exclusions.1.groupId = plexus |
| * project.dependencies.0.exclusions.1.artifactId = plexus-container-default |
| * </pre> |
| * |
| * Expressions that reference non-existing objects or use invalid collection/array indices silently resolve to |
| * <code>null</code>. For collections and arrays, the special index "*" can be used to iterate all elements. |
| * |
| * @author Benjamin Bentmann |
| * |
| */ |
| @Mojo(name = "eval", defaultPhase = LifecyclePhase.INITIALIZE) |
| public class EvalMojo extends AbstractMojo { |
| |
| /** |
| * The project's base directory, used for manual path translation. |
| */ |
| @Parameter(defaultValue = "${basedir", readonly = true) |
| private File basedir; |
| |
| /** |
| * The path to the output file for the properties with the expression values. For each expression given by the |
| * parameter {@link #expressions}, a similar named properties key will be used to save the expression value. If an |
| * expression evaluated to <code>null</code>, there will be no corresponding key in the properties file. |
| */ |
| @Parameter(property = "expression.outputFile") |
| private File outputFile; |
| |
| /** |
| * The set of expressions to evaluate. |
| */ |
| @Parameter |
| private String[] expressions; |
| |
| /** |
| * The comma separated set of expressions to evaluate. |
| */ |
| @Parameter(property = "expression.expressions") |
| private String expressionList; |
| |
| /** |
| * The current Maven project against which expressions are evaluated. |
| */ |
| @Parameter(defaultValue = "${project}", readonly = true) |
| private Object project; |
| |
| /** |
| * The forked Maven project against which expressions are evaluated. |
| */ |
| @Parameter(defaultValue = "${executedProject}", readonly = true) |
| private Object executedProject; |
| |
| /** |
| * The merged user/global settings of the current build against which expressions are evaluated. |
| */ |
| @Parameter(defaultValue = "${settings}", readonly = true) |
| private Object settings; |
| |
| /** |
| * The session context of the current build against which expressions are evaluated. |
| */ |
| @Parameter(defaultValue = "${session}", readonly = true) |
| private Object session; |
| |
| /** |
| * The local repository of the current build against which expressions are evaluated. |
| */ |
| @Parameter(defaultValue = "${session.request.localRepositoryPath}", readonly = true) |
| private Object localRepositoryBasedir; |
| |
| /** |
| * Runs this mojo. |
| * |
| * @throws MojoExecutionException If the output file could not be created. |
| * @throws MojoFailureException If the output file has not been set. |
| */ |
| public void execute() throws MojoExecutionException, MojoFailureException { |
| if (outputFile == null) { |
| throw new MojoFailureException("Path name for output file has not been specified"); |
| } |
| |
| /* |
| * NOTE: We don't want to test path translation here. |
| */ |
| if (!outputFile.isAbsolute()) { |
| outputFile = new File(basedir, outputFile.getPath()).getAbsoluteFile(); |
| } |
| |
| getLog().info("[MAVEN-CORE-IT-LOG] Creating output file: " + outputFile); |
| |
| Properties expressionProperties = new Properties(); |
| |
| if (expressionList != null && expressionList.length() > 0) { |
| expressions = expressionList.split(","); |
| } |
| if (expressions != null && expressions.length > 0) { |
| Map contexts = new HashMap(); |
| contexts.put("project", project); |
| contexts.put("executedProject", executedProject); |
| contexts.put("pom", project); |
| contexts.put("settings", settings); |
| contexts.put("session", session); |
| contexts.put("localRepositoryBasedir", localRepositoryBasedir); |
| |
| for (String expression : expressions) { |
| Map values = ExpressionUtil.evaluate(expression, contexts); |
| for (Object key : values.keySet()) { |
| Object value = values.get(key); |
| PropertyUtil.store(expressionProperties, key.toString().replace('/', '.'), value); |
| } |
| } |
| } |
| |
| try { |
| PropertyUtil.write(expressionProperties, outputFile); |
| } catch (IOException e) { |
| throw new MojoExecutionException("Output file could not be created: " + outputFile, e); |
| } |
| |
| getLog().info("[MAVEN-CORE-IT-LOG] Created output file: " + outputFile); |
| } |
| |
| public void setOutputFile(File outputFile) { |
| this.outputFile = outputFile; |
| } |
| } |