| /* |
| * 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 |
| * |
| * https://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.tools.ant.taskdefs.condition; |
| |
| import org.apache.tools.ant.AntTypeDefinition; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.ComponentHelper; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.ProjectComponent; |
| import org.apache.tools.ant.ProjectHelper; |
| |
| /** |
| * looks for a task or other Ant type that exists. Existence is defined as |
| * the type is defined, and its implementation class is present. This |
| * will work for datatypes and preset, script and macro definitions. |
| */ |
| public class TypeFound extends ProjectComponent implements Condition { |
| |
| private String name; |
| private String uri; |
| |
| /** |
| * the task or other type to look for |
| * @param name the name of the type |
| */ |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| /** |
| * The URI for this definition. |
| * @param uri the namespace URI. If this is not set, use the |
| * default ant namespace. |
| */ |
| public void setURI(String uri) { |
| this.uri = uri; |
| } |
| |
| /** |
| * test for a task or other ant type existing in the current project |
| * @param typename the name of the type |
| * @return true if the typename exists |
| */ |
| protected boolean doesTypeExist(String typename) { |
| ComponentHelper helper = |
| ComponentHelper.getComponentHelper(getProject()); |
| String componentName = ProjectHelper.genComponentName(uri, typename); |
| AntTypeDefinition def = helper.getDefinition(componentName); |
| if (def == null) { |
| return false; |
| } |
| //now verify that the class has an implementation |
| boolean found = def.getExposedClass(getProject()) != null; |
| if (!found) { |
| String text = helper.diagnoseCreationFailure(componentName, "type"); |
| log(text, Project.MSG_VERBOSE); |
| } |
| return found; |
| } |
| |
| |
| /** |
| * Is this condition true? |
| * @return true if the condition is true |
| * @exception BuildException if an error occurs |
| */ |
| @Override |
| public boolean eval() throws BuildException { |
| if (name == null) { |
| throw new BuildException("No type specified"); |
| } |
| return doesTypeExist(name); |
| } |
| } |