/* Copyright 2004 The Apache Software Foundation
*
* 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.codehaus.jam.internal;
import org.codehaus.jam.mutable.MClass;
import org.codehaus.jam.provider.JamClassBuilder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* <p>A ClassBuilder that doesn't do any lazy building - it is just a cache
* of classes that are used when asked to build one. This is used by
* JamXmlReader, which does all of it's reading and building in a single
* pass.</p>
*
* @author Patrick Calahan <email: pcal-at-bea-dot-com>
*/
public class CachedClassBuilder extends JamClassBuilder {
// ========================================================================
// Variables
private Map mQcname2jclass = null;
private List mClassNames = new ArrayList();
// ========================================================================
// Constructors
public CachedClassBuilder() {}
// ========================================================================
// JamClassBuilder implementation
public MClass build(String packageName, String className) {
if (mQcname2jclass == null) return null;
if (packageName.trim().length() > 0) {
className = packageName+'.'+className;
}
return (MClass)mQcname2jclass.get(className);
}
// ========================================================================
// Public methods
public MClass createClassToBuild(String packageName,
String className,
String[] importSpecs) {
String qualifiedName;
if (packageName.trim().length() > 0) {
qualifiedName = packageName+'.'+className;
} else {
qualifiedName = className;
}
MClass out;
if (mQcname2jclass != null) {
out = (MClass)mQcname2jclass.get(qualifiedName);
if (out != null) return out;
} else {
mQcname2jclass = new HashMap();
}
out = super.createClassToBuild(packageName,className, importSpecs);
mQcname2jclass.put(qualifiedName,out);
mClassNames.add(qualifiedName);
return out;
}
public String[] getClassNames() {
String[] out = new String[mClassNames.size()];
mClassNames.toArray(out);
return out;
}
}