io.telicent.smart.cache.sources.file.rdf.RdfFormat Maven / Gradle / Ivy

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/**
 * Copyright (C) Telicent Ltd
 *
 * 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 io.telicent.smart.cache.sources.file.rdf;

import io.telicent.smart.cache.sources.file.*;
import org.apache.kafka.common.serialization.Deserializer;
import org.apache.kafka.common.serialization.Serializer;

import java.io.File;

/**
 * RDF file event format
 */
public class RdfFormat implements FileEventFormatProvider {

    /**
     * Name of the RDF event format
     */
    public static final String NAME = "rdf";

    @Override
    public String name() {
        return NAME;
    }

    @Override
    public  FileEventReader createReader(Deserializer keyDeserializer,
                                                                     Deserializer valueDeserializer) {
        return new RdfEventReaderWriter<>(keyDeserializer, valueDeserializer);
    }

    @Override
    public  FileEventWriter createWriter(Serializer keySerializer,
                                                                     Serializer valueSerializer) {
        return new RdfEventReaderWriter<>(keySerializer, valueSerializer);
    }

    @Override
    public  FileEventReaderWriter createReaderWriter(Deserializer keyDeserializer,
                                                                                 Deserializer valueDeserializer,
                                                                                 Serializer keySerializer,
                                                                                 Serializer valueSerializer) {
        return new RdfEventReaderWriter<>(keyDeserializer, valueDeserializer, keySerializer, valueSerializer);
    }

    @Override
    public  FileEventSource createSource(Deserializer keyDeserializer,
                                                                     Deserializer valueDeserializer,
                                                                     File source) {
        return new RdfFileEventSource<>(source, keyDeserializer, valueDeserializer);
    }

    @Override
    public  FileEventSource createSingleFileSource(Deserializer keyDeserializer,
                                                                               Deserializer valueDeserializer,
                                                                               File source) {
        return new SingleFileEventSource<>(source, new RdfEventReaderWriter<>(keyDeserializer, valueDeserializer));
    }

    @Override
    public String defaultFileExtension() {
        return ".nq";
    }
}