/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.beam.sdk.io.gcp.bigquery;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.beam.sdk.coders.AtomicCoder;
import org.apache.beam.sdk.coders.Coder;
import org.apache.beam.sdk.coders.CoderException;
import org.apache.beam.sdk.coders.NullableCoder;
import org.apache.beam.sdk.coders.StringUtf8Coder;
/** A coder for {@link TableDestination} objects. */
public class TableDestinationCoder extends AtomicCoder<TableDestination> {
private static final TableDestinationCoder INSTANCE = new TableDestinationCoder();
private static final Coder<String> tableSpecCoder = StringUtf8Coder.of();
private static final Coder<String> tableDescriptionCoder = NullableCoder.of(StringUtf8Coder.of());
public static TableDestinationCoder of() {
return INSTANCE;
}
@Override
public void encode(TableDestination value, OutputStream outStream)
throws IOException {
if (value == null) {
throw new CoderException("cannot encode a null value");
}
tableSpecCoder.encode(value.getTableSpec(), outStream);
tableDescriptionCoder.encode(value.getTableDescription(), outStream);
}
@Override
public TableDestination decode(InputStream inStream) throws IOException {
String tableSpec = tableSpecCoder.decode(inStream);
String tableDescription = tableDescriptionCoder.decode(inStream);
return new TableDestination(tableSpec, tableDescription);
}
@Override
public void verifyDeterministic() throws NonDeterministicException {}
}