diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/dispatch/DispatchUtils.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/dispatch/DispatchUtils.java | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/dispatch/DispatchUtils.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/dispatch/DispatchUtils.java new file mode 100644 index 00000000..1a7c1f98 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/dispatch/DispatchUtils.java @@ -0,0 +1,124 @@ +/* + * 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.tools.ant.dispatch; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.Task; +import org.apache.tools.ant.UnknownElement; + +/** + * Determines and Executes the action method for the task. + */ +// CheckStyle:HideUtilityClassConstructorCheck OFF - (bc) +public class DispatchUtils { + /** + * Determines and Executes the action method for the task. + * @param task the task to execute. + * @throws BuildException on error. + */ + public static final void execute(Object task) throws BuildException { + String methodName = "execute"; + Dispatchable dispatchable = null; + try { + if (task instanceof Dispatchable) { + dispatchable = (Dispatchable) task; + } else if (task instanceof UnknownElement) { + UnknownElement ue = (UnknownElement) task; + Object realThing = ue.getRealThing(); + if (realThing != null + && realThing instanceof Dispatchable + && realThing instanceof Task) { + dispatchable = (Dispatchable) realThing; + } + } + if (dispatchable != null) { + String mName = null; + try { + final String name = dispatchable.getActionParameterName(); + if (name != null && name.trim().length() > 0) { + mName = "get" + name.trim().substring(0, 1).toUpperCase(); + if (name.length() > 1) { + mName += name.substring(1); + } + final Class<? extends Dispatchable> c = dispatchable.getClass(); + final Method actionM = c.getMethod(mName, new Class[0]); + if (actionM != null) { + final Object o = actionM.invoke(dispatchable, (Object[]) null); + if (o != null) { + final String s = o.toString(); + if (s != null && s.trim().length() > 0) { + methodName = s.trim(); + Method executeM = null; + executeM = dispatchable.getClass().getMethod( + methodName, new Class[0]); + if (executeM == null) { + throw new BuildException( + "No public " + methodName + "() in " + + dispatchable.getClass()); + } + executeM.invoke(dispatchable, (Object[]) null); + if (task instanceof UnknownElement) { + ((UnknownElement) task).setRealThing(null); + } + } else { + throw new BuildException( + "Dispatchable Task attribute '" + name.trim() + + "' not set or value is empty."); + } + } else { + throw new BuildException( + "Dispatchable Task attribute '" + name.trim() + + "' not set or value is empty."); + } + } + } else { + throw new BuildException( + "Action Parameter Name must not be empty for Dispatchable Task."); + } + } catch (NoSuchMethodException nsme) { + throw new BuildException("No public " + mName + "() in " + task.getClass()); + } + } else { + Method executeM = null; + executeM = task.getClass().getMethod(methodName, new Class[0]); + if (executeM == null) { + throw new BuildException("No public " + methodName + "() in " + + task.getClass()); + } + executeM.invoke(task, (Object[]) null); + if (task instanceof UnknownElement) { + ((UnknownElement) task).setRealThing(null); + } + } + } catch (InvocationTargetException ie) { + Throwable t = ie.getTargetException(); + if (t instanceof BuildException) { + throw ((BuildException) t); + } else { + throw new BuildException(t); + } + } catch (NoSuchMethodException e) { + throw new BuildException(e); + } catch (IllegalAccessException e) { + throw new BuildException(e); + } + } +} |