org.metafacture.io.ObjectJavaIoWriter Maven / Gradle / Ivy

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/*
 * Copyright 2013, 2014 Deutsche Nationalbibliothek
 *
 * 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.metafacture.io;

import org.metafacture.framework.MetafactureException;
import org.metafacture.framework.ObjectReceiver;

import java.io.IOException;
import java.io.Writer;

/**
 * @param  object type
 *
 * @author Christoph Böhme, Markus Geipel
 * @deprecated Use {@link ObjectWriter} or {@link ObjectFileWriter} instead.
 */
@Deprecated
public final class ObjectJavaIoWriter implements ObjectReceiver {

    private Writer writer;
    private boolean closed;
    private final IoWriterFactory writerFactory;

    /**
     * Deprecated.
     *
     * @param writer the Writer
     */
    public ObjectJavaIoWriter(final Writer writer) {
        this.writer = writer;
        writerFactory = null;
    }

    /**
     * Deprecated.
     *
     * @param writerFactory the IoWriterFactory
     */
    public ObjectJavaIoWriter(final IoWriterFactory writerFactory) {
        this.writerFactory = writerFactory;
        this.writer = writerFactory.createWriter();
    }

    @Override
    public void process(final T obj) {
        assert !closed;
        try {
            writer.write(obj.toString());
            writer.append('\n');
        }
        catch (final IOException e) {
            throw new MetafactureException(e);
        }
    }

    @Override
    public void resetStream() {
        if (writerFactory == null) {
            throw new UnsupportedOperationException("Cannot reset ObjectJavaIoWriter. No IOWriterFactory set.");
        }
        writer = writerFactory.createWriter();

    }

    @Override
    public void closeStream() {
        if (!closed) {
            try {
                writer.close();
            }
            catch (final IOException e) {
                throw new MetafactureException(e);
            }
            finally {
                closed = true;
            }

        }
    }
}