/*
* Copyright (c) 2007, 2011, 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.
*
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package com.sun.tools.visualvm.modules.tracer.impl;
import com.sun.tools.visualvm.core.datasource.DataSource;
import com.sun.tools.visualvm.core.datasupport.Positionable;
import com.sun.tools.visualvm.modules.tracer.TracerPackage;
import com.sun.tools.visualvm.modules.tracer.TracerPackageProvider;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
*
* @author Jiri Sedlacek
*/
public final class TracerSupportImpl {
private static TracerSupportImpl INSTANCE;
private final Set<TracerPackageProvider> providers;
public static synchronized TracerSupportImpl getInstance() {
if (INSTANCE == null) INSTANCE = new TracerSupportImpl();
return INSTANCE;
}
public synchronized void registerPackageProvider(TracerPackageProvider provider) {
providers.add(provider);
}
public synchronized void unregisterPackageProvider(TracerPackageProvider provider) {
providers.remove(provider);
}
public synchronized boolean hasPackages(DataSource dataSource) {
for (TracerPackageProvider provider : providers)
if (provider.getScope().isInstance(dataSource))
return true;
return false;
}
public synchronized List<TracerPackage> getPackages(DataSource dataSource) {
List<TracerPackage> packages = new ArrayList();
for (TracerPackageProvider provider : providers)
if (provider.getScope().isInstance(dataSource))
packages.addAll(Arrays.asList(provider.getPackages(dataSource)));
Collections.sort(packages, Positionable.COMPARATOR);
return packages;
}
private TracerSupportImpl() {
providers = new HashSet();
}
}