org.mutabilitydetector.classloading.CachingAnalysisClassLoader Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of MutabilityDetector Show documentation

Lightweight analysis tool for detecting mutability in Java classes.

There is a newer version: 0.10.6

package org.mutabilitydetector.classloading;

/*
 * #%L
 * MutabilityDetector
 * %%
 * Copyright (C) 2008 - 2014 Graham Allan
 * %%
 * 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.
 * #L%
 */



import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;


import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;

public final class CachingAnalysisClassLoader implements AnalysisClassLoader {
    
    private final Cache> cache = CacheBuilder.newBuilder().recordStats().build();
    private final AnalysisClassLoader classLoader;
    
    public CachingAnalysisClassLoader(AnalysisClassLoader classLoader) {
        this.classLoader = classLoader;
    }

    @Override
    public Class loadClass(final String dottedClass) throws ClassNotFoundException {
        try {
            return cache.get(dottedClass, new Callable>() {
                @Override public Class call() throws Exception {
                    return classLoader.loadClass(dottedClass);
                }
            });
        } catch (ExecutionException e) {
            throw new ClassNotFoundException("Error loading class: " + dottedClass, e.getCause());
        }
    }

}