/**
* Copyright 2010 JBoss Inc
*
* Licensed 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.drools.guvnor;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import java.io.*;
import java.util.*;
/**
*
*/
public abstract class Generator extends Task {
List<Object> configs = new ArrayList<Object>();
Set<String> imports = new TreeSet<String>();
String configuration;
String outPath;
String className;
public String getConfiguration() {
return configuration;
}
public void setConfiguration(String configuration) {
this.configuration = configuration;
}
public String getOutPath() {
return outPath;
}
public void setOutPath(String outPath) {
this.outPath = outPath;
}
public String getClassName() {
return className;
}
public void setClassName(String className) {
this.className = className;
}
abstract void processProperties(String key, String[] options);
abstract String generateClassSource();
abstract void collectImports();
public void loadEditorsConfig() throws IOException {
Properties p = new Properties();
p.load(new FileInputStream(configuration));
for (Object o : p.keySet()) {
String key = (String) o;
String[] options = p.getProperty(key).split(";");
processProperties(key, options);
}
}
public void execute() throws BuildException {
System.out.println("--------- generating " + className + " ---------");
try {
System.out.println("loading configuration: " + configuration);
loadEditorsConfig();
} catch (IOException e) {
e.printStackTrace();
throw new BuildException(e);
}
System.out.println("collecting required imports");
collectImports();
System.out.println("generating the class source");
generate();
System.out.println("new " + className + " is created in " + outPath);
System.out.println("--------- " + className + " generated ---------");
}
protected void generate() {
String source = generateClassSource();
try {
File file = new File(outPath, className + ".java");
System.out.println("writing the new class to " + file.getAbsolutePath());
FileWriter fileWriter = new FileWriter(file);
BufferedWriter buffWriter = new BufferedWriter(fileWriter);
buffWriter.write(source);
buffWriter.flush();
buffWriter.close();
System.out.println("write complete");
} catch (IOException e) {
throw new BuildException(e);
}
}
void addImports(StringBuffer sb) {
for (String classImport : imports) {
sb.append("import " + classImport + ";\n");
}
}
}