org.parceler.internal.TransactionProcessorParcelJoin.java Source code

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Here is the source code for org.parceler.internal.TransactionProcessorParcelJoin.java

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/**
 * Copyright 2013 John Ericksen
 *
 * 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.parceler.internal;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import org.androidtransfuse.transaction.TransactionProcessor;
import org.androidtransfuse.transaction.TransactionProcessorPool;

import java.util.Map;

/**
 * @author John Ericksen
 */
public class TransactionProcessorParcelJoin<V, R> implements TransactionProcessor<V, R> {

    private TransactionProcessorPool<V, V> externalRepositoryProcessor;
    private TransactionProcessor<?, Map<V, R>> externalProcessor;
    private TransactionProcessor<V, R> parcelProcessor;

    public TransactionProcessorParcelJoin(TransactionProcessorPool<V, V> externalRepositoryProcessor,
            TransactionProcessor<?, Map<V, R>> externalProcessor, TransactionProcessor<V, R> parcelProcessor) {
        this.externalRepositoryProcessor = externalRepositoryProcessor;
        this.externalProcessor = externalProcessor;
        this.parcelProcessor = parcelProcessor;
    }

    @Override
    public void execute() {
        externalRepositoryProcessor.execute();
        if (externalRepositoryProcessor.isComplete() && !externalProcessor.isComplete()) {
            externalProcessor.execute();
        }

        if (externalProcessor.isComplete() && !parcelProcessor.isComplete()) {
            parcelProcessor.execute();
        }
    }

    @Override
    public boolean isComplete() {
        return externalProcessor.isComplete() && parcelProcessor.isComplete();
    }

    @Override
    public ImmutableSet<Exception> getErrors() {
        ImmutableSet.Builder<Exception> builder = ImmutableSet.builder();
        builder.addAll(externalProcessor.getErrors());
        builder.addAll(parcelProcessor.getErrors());

        return builder.build();
    }

    @Override
    public Map<V, R> getResults() {
        ImmutableMap.Builder<V, R> builder = ImmutableMap.builder();

        for (Map<V, R> externalResults : externalProcessor.getResults().values()) {
            builder.putAll(externalResults);
        }

        builder.putAll(parcelProcessor.getResults());

        return builder.build();
    }
}