TextLineSerializer.java

/**
 * 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.tajo.plan.function.stream;

import org.apache.tajo.catalog.Schema;
import org.apache.tajo.catalog.TableMeta;
import org.apache.tajo.plan.function.FunctionContext;
import org.apache.tajo.storage.Tuple;

import java.io.IOException;
import java.io.OutputStream;

/**
 * Write a Tuple into single text formatted line
 */
public abstract class TextLineSerializer {
  protected TableMeta meta;

  public TextLineSerializer(TableMeta meta) {
    this.meta = meta;
  }

  public abstract void init();

  public abstract int serialize(OutputStream out, Tuple input, Schema schema) throws IOException;

  public abstract int serializeContext(OutputStream out, FunctionContext context) throws IOException;

  public abstract void release();
}