/*
* Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* The Original Code is HAT. The Initial Developer of the
* Original Code is Bill Foote, with contributions from others
* at JavaSoft/Sun.
*/
package com.sun.tools.hat.internal.server;
import com.sun.tools.hat.internal.model.*;
import java.util.*;
/**
* References by type summary
*
*/
public class RefsByTypeQuery extends QueryHandler {
public void run() {
JavaClass clazz = snapshot.findClass(query);
if (clazz == null) {
error("class not found: " + query);
} else {
Map<JavaClass, Long> referrersStat = new HashMap<JavaClass, Long>();
final Map<JavaClass, Long> refereesStat = new HashMap<JavaClass, Long>();
Enumeration instances = clazz.getInstances(false);
while (instances.hasMoreElements()) {
JavaHeapObject instance = (JavaHeapObject) instances.nextElement();
if (instance.getId() == -1) {
continue;
}
Enumeration e = instance.getReferers();
while (e.hasMoreElements()) {
JavaHeapObject ref = (JavaHeapObject) e.nextElement();
JavaClass cl = ref.getClazz();
if (cl == null) {
System.out.println("null class for " + ref);
continue;
}
Long count = referrersStat.get(cl);
if (count == null) {
count = new Long(1);
} else {
count = new Long(count.longValue() + 1);
}
referrersStat.put(cl, count);
}
instance.visitReferencedObjects(
new AbstractJavaHeapObjectVisitor() {
public void visit(JavaHeapObject obj) {
JavaClass cl = obj.getClazz();
Long count = refereesStat.get(cl);
if (count == null) {
count = new Long(1);
} else {
count = new Long(count.longValue() + 1);
}
refereesStat.put(cl, count);
}
}
);
} // for each instance
startHtml("References by Type");
out.println("<p align='center'>");
printClass(clazz);
if (clazz.getId() != -1) {
out.println("[" + clazz.getIdString() + "]");
}
out.println("</p>");
if (referrersStat.size() != 0) {
out.println("<h3 align='center'>Referrers by Type</h3>");
print(referrersStat);
}
if (refereesStat.size() != 0) {
out.println("<h3 align='center'>Referees by Type</h3>");
print(refereesStat);
}
endHtml();
} // clazz != null
} // run
private void print(final Map<JavaClass, Long> map) {
out.println("<table border='1' align='center'>");
Set<JavaClass> keys = map.keySet();
JavaClass[] classes = new JavaClass[keys.size()];
keys.toArray(classes);
Arrays.sort(classes, new Comparator<JavaClass>() {
public int compare(JavaClass first, JavaClass second) {
Long count1 = map.get(first);
Long count2 = map.get(second);
return count2.compareTo(count1);
}
});
out.println("<tr><th>Class</th><th>Count</th></tr>");
for (int i = 0; i < classes.length; i++) {
JavaClass clazz = classes[i];
out.println("<tr><td>");
out.print("<a href='/refsByType/");
out.print(clazz.getIdString());
out.print("'>");
out.print(clazz.getName());
out.println("</a>");
out.println("</td><td>");
out.println(map.get(clazz));
out.println("</td></tr>");
}
out.println("</table>");
}
}