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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package com.pdd.pop.ext.glassfish.grizzly.streams;

import com.pdd.pop.ext.glassfish.grizzly.TransformationException;
import com.pdd.pop.ext.glassfish.grizzly.TransformationResult;
import com.pdd.pop.ext.glassfish.grizzly.TransformationResult.Status;
import com.pdd.pop.ext.glassfish.grizzly.Transformer;
import com.pdd.pop.ext.glassfish.grizzly.utils.ResultAware;
import com.pdd.pop.ext.glassfish.grizzly.utils.conditions.Condition;

/**
 *
 * @author Alexey Stashok
 */
public class StreamDecodeCondition implements Condition {

    private final StreamReader streamReader;
    
    private final Transformer decoder;
    private final ResultAware resultAware;

    public StreamDecodeCondition(StreamReader streamReader,
            Transformer decoder,
            ResultAware resultAware) {
        this.streamReader = streamReader;
        this.decoder = decoder;
        this.resultAware = resultAware;
    }

    @Override
    public boolean check() {
        final TransformationResult result =
                decoder.transform(streamReader.getConnection(), streamReader);

        final Status status = result.getStatus();
        if (status == Status.COMPLETE) {
            resultAware.setResult(result.getMessage());
            return true;
        } else if (status == Status.INCOMPLETE) {
            return false;
        }

        throw new TransformationException(result.getErrorCode() + ": " +
                result.getErrorDescription());
    }
}