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/*
 * Copyright 2009 the original author or authors.
 *
 * 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.gradle.internal.serialize;

import com.google.common.base.Objects;
import org.gradle.internal.Cast;
import org.gradle.internal.io.ClassLoaderObjectInputStream;

import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.StreamCorruptedException;

public class DefaultSerializer extends AbstractSerializer {
    private ClassLoader classLoader;

    public DefaultSerializer() {
        classLoader = getClass().getClassLoader();
    }

    public DefaultSerializer(ClassLoader classLoader) {
        this.classLoader = classLoader != null ? classLoader : getClass().getClassLoader();
    }

    public ClassLoader getClassLoader() {
        return classLoader;
    }

    public void setClassLoader(ClassLoader classLoader) {
        this.classLoader = classLoader;
    }

    @Override
    public T read(Decoder decoder) throws Exception {
        try {
            return Cast.uncheckedNonnullCast(new ClassLoaderObjectInputStream(decoder.getInputStream(), classLoader).readObject());
        } catch (StreamCorruptedException e) {
            return null;
        }
    }

    @Override
    public void write(Encoder encoder, T value) throws IOException {
        ObjectOutputStream objectStr = new ObjectOutputStream(encoder.getOutputStream());
        objectStr.writeObject(value);
        objectStr.flush();
    }

    @Override
    public boolean equals(Object obj) {
        if (!super.equals(obj)) {
            return false;
        }

        DefaultSerializer rhs = (DefaultSerializer) obj;
        return Objects.equal(classLoader, rhs.classLoader);
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(super.hashCode(), classLoader);
    }
}