AvroWriter.java

/*
 * Copyright (c) 2014, Francis Galiegue (fgaliegue@gmail.com)
 *
 * This software is dual-licensed under:
 *
 * - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
 *   later version;
 * - the Apache Software License (ASL) version 2.0.
 *
 * The text of both licenses is available under the src/resources/ directory of
 * this project (under the names LGPL-3.0.txt and ASL-2.0.txt respectively).
 *
 * Direct link to the sources:
 *
 * - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
 * - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
 */

package com.github.fge.jsonschema2avro.writers;

import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.processing.Processor;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.core.tree.SchemaTree;
import com.github.fge.jsonschema.core.util.ValueHolder;
import com.github.fge.jsonschema2avro.AvroPayload;
import com.github.fge.jsonschema2avro.AvroWriterProcessor;
import org.apache.avro.Schema;

public abstract class AvroWriter
    implements Processor<AvroPayload, ValueHolder<Schema>>
{
    @Override
    public final ValueHolder<Schema> process(final ProcessingReport report,
        final AvroPayload input)
        throws ProcessingException
    {
        final AvroWriterProcessor writer = input.getWriter();
        final SchemaTree tree = input.getTree();
        final Schema schema = generate(writer, report, tree);
        return ValueHolder.hold(schema);
    }

    protected abstract Schema generate(final AvroWriterProcessor writer,
        final ProcessingReport report, final SchemaTree tree)
        throws ProcessingException;
}