From dev-return-77040-apmail-ant-dev-archive=ant.apache.org@ant.apache.org Sun Dec 03 22:51:32 2006 Return-Path: Delivered-To: apmail-ant-dev-archive@www.apache.org Received: (qmail 84432 invoked from network); 3 Dec 2006 22:51:30 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 3 Dec 2006 22:51:30 -0000 Received: (qmail 95423 invoked by uid 500); 3 Dec 2006 22:51:38 -0000 Delivered-To: apmail-ant-dev-archive@ant.apache.org Received: (qmail 95369 invoked by uid 500); 3 Dec 2006 22:51:38 -0000 Mailing-List: contact dev-help@ant.apache.org; run by ezmlm Precedence: bulk List-Unsubscribe: List-Help: List-Post: List-Id: "Ant Developers List" Reply-To: "Ant Developers List" Delivered-To: mailing list dev@ant.apache.org Received: (qmail 95358 invoked by uid 500); 3 Dec 2006 22:51:38 -0000 Received: (qmail 95355 invoked by uid 99); 3 Dec 2006 22:51:38 -0000 Received: from herse.apache.org (HELO herse.apache.org) (140.211.11.133) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 03 Dec 2006 14:51:38 -0800 X-ASF-Spam-Status: No, hits=-9.4 required=10.0 tests=ALL_TRUSTED,NO_REAL_NAME X-Spam-Check-By: apache.org Received: from [140.211.11.3] (HELO eris.apache.org) (140.211.11.3) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 03 Dec 2006 14:51:29 -0800 Received: by eris.apache.org (Postfix, from userid 65534) id 1F4CB1A9846; Sun, 3 Dec 2006 14:50:49 -0800 (PST) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: svn commit: r481962 - /ant/core/trunk/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java Date: Sun, 03 Dec 2006 22:50:48 -0000 To: ant-cvs@apache.org From: peterreilly@apache.org X-Mailer: svnmailer-1.1.0 Message-Id: <20061203225049.1F4CB1A9846@eris.apache.org> X-Virus-Checked: Checked by ClamAV on apache.org Author: peterreilly Date: Sun Dec 3 14:50:48 2006 New Revision: 481962 URL: http://svn.apache.org/viewvc?view=rev&rev=481962 Log: add implementaion for javax script runner Added: ant/core/trunk/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java Added: ant/core/trunk/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java URL: http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java?view=auto&rev=481962 ============================================================================== --- ant/core/trunk/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java (added) +++ ant/core/trunk/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java Sun Dec 3 14:50:48 2006 @@ -0,0 +1,131 @@ +/* + * 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.util.optional; + +import org.apache.tools.ant.BuildException; + + +import java.util.Iterator; +import org.apache.tools.ant.util.ScriptRunnerBase; +import org.apache.tools.ant.util.ReflectUtil; +import org.apache.tools.ant.util.ReflectWrapper; + + +/** + * This class is used to run javax.script scripts + * + */ +public class JavaxScriptRunner extends ScriptRunnerBase { + private ReflectWrapper engine; + + /** + * Get the name of the manager prefix. + * @return "javax" + */ + public String getManagerName() { + return "javax"; + } + + /** {@inheritDoc}. */ + public boolean supportsLanguage() { + if (engine != null) { + return true; + } + checkLanguage(); + ClassLoader origLoader = replaceContextLoader(); + try { + return createEngine() != null; + } catch (Exception ex) { + return false; + } finally { + restoreContextLoader(origLoader); + } + } + + /** + * Do the work to run the script. + * + * @param execName the name that will be passed to the + * scripting engine for this script execution. + * + * @exception BuildException if someting goes wrong exectuing the script. + */ + public void executeScript(String execName) throws BuildException { + evalulateScript(execName); + } + + /** + * Do the work to eval the script. + * + * @param execName the name that will be passed to the + * scripting engine for this script execution. + * @return the result of the evalulation + * @exception BuildException if someting goes wrong exectuing the script. + */ + public Object evalulateScript(String execName) throws BuildException { + checkLanguage(); + ClassLoader origLoader = replaceContextLoader(); + try { + ReflectWrapper engine = createEngine(); + if (engine == null) { + throw new BuildException( + "Unable to create javax script engine for " + + getLanguage()); + } + for (Iterator i = getBeans().keySet().iterator(); i.hasNext();) { + String key = (String) i.next(); + Object value = getBeans().get(key); + engine.invoke( + "put", String.class, key, Object.class, value); + } + // execute the script + return engine.invoke("eval", String.class, getScript()); + } catch (Exception be) { + Throwable t = be; + Throwable te = (Throwable) ReflectUtil.invoke(be, "getCause"); + if (te != null) { + if (te instanceof BuildException) { + throw (BuildException) te; + } else { + t = te; + } + } + throw new BuildException(t); + } finally { + restoreContextLoader(origLoader); + } + } + + private ReflectWrapper createEngine() throws Exception { + if (engine != null) { + return engine; + } + ReflectWrapper manager = new ReflectWrapper( + getClass().getClassLoader(), "javax.script.ScriptEngineManager"); + Object e = manager.invoke( + "getEngineByName", String.class, getLanguage()); + if (e == null) { + return null; + } + ReflectWrapper ret = new ReflectWrapper(e); + if (getKeepEngine()) { + this.engine = ret; + } + return ret; + } +} --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscribe@ant.apache.org For additional commands, e-mail: dev-help@ant.apache.org