/*
* Copyright 2014 Yaroslav Mytkalyk
* 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 com.docd.purefm.operations;
import android.support.annotation.NonNull;
/**
* Operation that is performed by {@link com.docd.purefm.operations.OperationsService}
*
* @param <Param> type of array that will be passed to {@link #execute(Object[])}
* @param <Result> type that is returned by {@link #execute(Object[])}
*
* @author Doctoror
*/
abstract class Operation<Param, Result> {
private volatile boolean mCanceled;
private Thread mOperationThread;
protected Operation() {
}
public final void cancel(final boolean interrupt) {
mCanceled = true;
if (interrupt) {
mOperationThread.interrupt();
}
}
protected final boolean isCanceled() {
return mCanceled;
}
public final Result execute(@NonNull final Param... params) {
mOperationThread = Thread.currentThread();
return doInBackground(params);
}
protected abstract Result doInBackground(@NonNull Param... params);
}