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package com.sun.enterprise.deployment.annotation.factory;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;
import java.io.IOException;
import com.sun.enterprise.deployment.annotation.Scanner;
import com.sun.enterprise.deployment.annotation.AnnotationProcessor;
import com.sun.enterprise.deployment.annotation.AnnotationHandler;
import com.sun.enterprise.deployment.annotation.impl.AnnotationProcessorImpl;
import com.sun.enterprise.deployment.annotation.impl.AnnotationUtils;
/**
* The Factory is responsible for initializing a ready to use AnnotationProcessor.
*
* @author Jerome Dochez
*/
public abstract class Factory {
private static Set<String> skipAnnotationClassList = null;
private static final String SKIP_ANNOTATION_CLASS_LIST_URL =
"skip-annotation-class-list";
/** we do no Create new instances of Factory */
protected Factory() {
}
private static void init() {
}
/**
* Return a empty AnnotationProcessor with no annotation handlers registered
* @return initialized AnnotationProcessor instance
*/
public static AnnotationProcessorImpl getDefaultAnnotationProcessor() {
return new AnnotationProcessorImpl();
}
// initialize the list of class files we should skip annotation processing
private synchronized static void initSkipAnnotationClassList() {
if (skipAnnotationClassList == null) {
skipAnnotationClassList = new HashSet<String>();
InputStream is = null;
try {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
is = cl.getResourceAsStream(SKIP_ANNOTATION_CLASS_LIST_URL);
BufferedReader bf =
new BufferedReader(new InputStreamReader(is));
String className;
while ( (className = bf.readLine()) != null ) {
skipAnnotationClassList.add(className.trim());
}
} catch (IOException ioe) {
AnnotationUtils.getLogger().log(Level.WARNING,
ioe.getMessage(), ioe);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException ioe2) {
// ignore
}
}
}
}
}
// check whether a certain class can skip annotation processing
public static boolean isSkipAnnotationProcessing(String cName) {
if (skipAnnotationClassList == null) {
initSkipAnnotationClassList();
}
return skipAnnotationClassList.contains(cName);
}
}