/*
* 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.taskdefs.optional.ejb;
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.types.Path;
import org.xml.sax.SAXException;
/**
* Compiles EJB stubs and skeletons for the iPlanet Application Server.
* The EJBs to be processed are specified by the EJB 1.1 standard XML
* descriptor, and additional attributes are obtained from the iPlanet Application
* Server-specific XML descriptor. Since the XML descriptors can include
* multiple EJBs, this is a convenient way of specifying many EJBs in a single
* Ant task. The following attributes are allowed:
* <ul>
* <li><i>ejbdescriptor</i> -- Standard EJB 1.1 XML descriptor (typically
* titled "ejb-jar.xml"). This attribute is
* required.
* <li><i>iasdescriptor</i> -- EJB XML descriptor for iPlanet Application
* Server (typically titled "ias-ejb-jar.xml).
* This attribute is required.
* <li><i>dest</i> -- The is the base directory where the RMI stubs and
* skeletons are written. In addition, the class files
* for each bean (home interface, remote interface, and
* EJB implementation) must be found in this directory.
* This attribute is required.
* <li><i>classpath</i> -- The classpath used when generating EJB stubs and
* skeletons. This is an optional attribute (if
* omitted, the classpath specified when Ant was
* started will be used). Nested "classpath"
* elements may also be used.
* <li><i>keepgenerated</i> -- Indicates whether or not the Java source
* files which are generated by ejbc will be
* saved or automatically deleted. If "yes",
* the source files will be retained. This is
* an optional attribute (if omitted, it
* defaults to "no").
* <li><i>debug</i> -- Indicates whether or not the ejbc utility should
* log additional debugging statements to the standard
* output. If "yes", the additional debugging statements
* will be generated (if omitted, it defaults to "no").
* <li><i>iashome</i> -- May be used to specify the "home" directory for
* this iPlanet Application Server installation. This
* is used to find the ejbc utility if it isn't
* included in the user's system path. This is an
* optional attribute (if specified, it should refer
* to the <code>[install-location]/iplanet/ias6/ias
* </code> directory). If omitted, the ejbc utility
* must be on the user's system path.
* </ul>
* <p>
* For each EJB specified, this task will locate the three classes that comprise
* the EJB. If these class files cannot be located in the <code>dest</code>
* directory, the task will fail. The task will also attempt to locate the EJB
* stubs and skeletons in this directory. If found, the timestamps on the
* stubs and skeletons will be checked to ensure they are up to date. Only if
* these files cannot be found or if they are out of date will ejbc be called
* to generate new stubs and skeletons.
*
* @see IPlanetEjbc
*
* @ant.task name="iplanet-ejbc" category="ejb"
*/
public class IPlanetEjbcTask extends Task {
/* Attributes set by the Ant build file */
private File ejbdescriptor;
private File iasdescriptor;
private File dest;
private Path classpath;
private boolean keepgenerated = false;
private boolean debug = false;
private File iashome;
/**
* Sets the location of the standard XML EJB descriptor. Typically, this
* file is named "ejb-jar.xml".
*
* @param ejbdescriptor The name and location of the EJB descriptor.
*/
public void setEjbdescriptor(File ejbdescriptor) {
this.ejbdescriptor = ejbdescriptor;
}
/**
* Sets the location of the iAS-specific XML EJB descriptor. Typically,
* this file is named "ias-ejb-jar.xml".
*
* @param iasdescriptor The name and location of the iAS-specific EJB
* descriptor.
*/
public void setIasdescriptor (File iasdescriptor) {
this.iasdescriptor = iasdescriptor;
}
/**
* Sets the destination directory where the EJB source classes must exist
* and where the stubs and skeletons will be written. The destination
* directory must exist before this task is executed.
*
* @param dest The directory where the compiled classes will be written.
*/
public void setDest(File dest) {
this.dest = dest;
}
/**
* Sets the classpath to be used when compiling the EJB stubs and skeletons.
*
* @param classpath The classpath to be used.
*/
public void setClasspath(Path classpath) {
if (this.classpath == null) {
this.classpath = classpath;
} else {
this.classpath.append(classpath);
}
}
/**
* Adds to the classpath used when compiling the EJB stubs and skeletons.
* @return the class path.
*/
public Path createClasspath() {
if (classpath == null) {
classpath = new Path(getProject());
}
return classpath.createPath();
}
/**
* If true, the Java source files which are generated by ejbc will be saved .
*
* @param keepgenerated A boolean indicating if the Java source files for
* the stubs and skeletons should be retained.
*/
public void setKeepgenerated(boolean keepgenerated) {
this.keepgenerated = keepgenerated;
}
/**
* If true, debugging output will be generated when ejbc is
* executed.
*
* @param debug A boolean indicating if debugging output should be generated
*/
public void setDebug(boolean debug) {
this.debug = debug;
}
/**
* May be used to specify the "home" directory for this iAS installation.
* The directory specified should typically be
* <code>[install-location]/iplanet/ias6/ias</code>.
*
* @param iashome The home directory for the user's iAS installation.
*/
public void setIashome(File iashome) {
this.iashome = iashome;
}
/**
* Does the work.
* @throws BuildException if there is a problem.
*/
public void execute() throws BuildException {
checkConfiguration();
executeEjbc(getParser());
}
/**
* Verifies that the user selections are valid.
*
* @throws BuildException If the user selections are invalid.
*/
private void checkConfiguration() throws BuildException {
if (ejbdescriptor == null) {
String msg = "The standard EJB descriptor must be specified using "
+ "the \"ejbdescriptor\" attribute.";
throw new BuildException(msg, getLocation());
}
if ((!ejbdescriptor.exists()) || (!ejbdescriptor.isFile())) {
String msg = "The standard EJB descriptor (" + ejbdescriptor
+ ") was not found or isn't a file.";
throw new BuildException(msg, getLocation());
}
if (iasdescriptor == null) {
String msg = "The iAS-speific XML descriptor must be specified using"
+ " the \"iasdescriptor\" attribute.";
throw new BuildException(msg, getLocation());
}
if ((!iasdescriptor.exists()) || (!iasdescriptor.isFile())) {
String msg = "The iAS-specific XML descriptor (" + iasdescriptor
+ ") was not found or isn't a file.";
throw new BuildException(msg, getLocation());
}
if (dest == null) {
String msg = "The destination directory must be specified using "
+ "the \"dest\" attribute.";
throw new BuildException(msg, getLocation());
}
if ((!dest.exists()) || (!dest.isDirectory())) {
String msg = "The destination directory (" + dest + ") was not "
+ "found or isn't a directory.";
throw new BuildException(msg, getLocation());
}
if ((iashome != null) && (!iashome.isDirectory())) {
String msg = "If \"iashome\" is specified, it must be a valid "
+ "directory (it was set to " + iashome + ").";
throw new BuildException(msg, getLocation());
}
}
/**
* Returns a SAXParser that may be used to process the XML descriptors.
*
* @return Parser which may be used to process the EJB descriptors.
* @throws BuildException If the parser cannot be created or configured.
*/
private SAXParser getParser() throws BuildException {
SAXParser saxParser = null;
try {
SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
saxParserFactory.setValidating(true);
saxParser = saxParserFactory.newSAXParser();
} catch (SAXException e) {
String msg = "Unable to create a SAXParser: " + e.getMessage();
throw new BuildException(msg, e, getLocation());
} catch (ParserConfigurationException e) {
String msg = "Unable to create a SAXParser: " + e.getMessage();
throw new BuildException(msg, e, getLocation());
}
return saxParser;
}
/**
* Executes the EJBc utility using the SAXParser provided.
*
* @param saxParser SAXParser that may be used to process the EJB
* descriptors
* @throws BuildException If there is an error reading or parsing the XML
* descriptors
*/
private void executeEjbc(SAXParser saxParser) throws BuildException {
IPlanetEjbc ejbc = new IPlanetEjbc(ejbdescriptor,
iasdescriptor,
dest,
getClasspath().toString(),
saxParser);
ejbc.setRetainSource(keepgenerated);
ejbc.setDebugOutput(debug);
if (iashome != null) {
ejbc.setIasHomeDir(iashome);
}
try {
ejbc.execute();
} catch (IOException e) {
String msg = "An IOException occurred while trying to read the XML "
+ "descriptor file: " + e.getMessage();
throw new BuildException(msg, e, getLocation());
} catch (SAXException e) {
String msg = "A SAXException occurred while trying to read the XML "
+ "descriptor file: " + e.getMessage();
throw new BuildException(msg, e, getLocation());
} catch (IPlanetEjbc.EjbcException e) {
String msg = "An exception occurred while trying to run the ejbc "
+ "utility: " + e.getMessage();
throw new BuildException(msg, e, getLocation());
}
}
/**
* Returns the CLASSPATH to be used when calling EJBc. If no user CLASSPATH
* is specified, the System classpath is returned instead.
*
* @return Path The classpath to be used for EJBc.
*/
private Path getClasspath() {
Path cp = null;
if (classpath == null) {
cp = (new Path(getProject())).concatSystemClasspath("last");
} else {
cp = classpath.concatSystemClasspath("ignore");
}
return cp;
}
}
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