exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/PriorityQueueCopier.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.drill.exec.physical.impl.xsort;

import java.util.List;

import org.apache.drill.exec.compile.TemplateClassDefinition;
import org.apache.drill.exec.exception.SchemaChangeException;
import org.apache.drill.exec.memory.BufferAllocator;
import org.apache.drill.exec.ops.FragmentContext;
import org.apache.drill.exec.record.VectorAccessible;

public interface PriorityQueueCopier {
  public static long initialAllocation = 10000000;
  public static long maxAllocation = 20000000;

  public void setup(FragmentContext context, BufferAllocator allocator, VectorAccessible hyperBatch, List<BatchGroup> batchGroups,
                    VectorAccessible outgoing) throws SchemaChangeException;
  public int next(int targetRecordCount);
  public void cleanup();

  public static TemplateClassDefinition<PriorityQueueCopier> TEMPLATE_DEFINITION = new TemplateClassDefinition<PriorityQueueCopier>(PriorityQueueCopier.class, PriorityQueueCopierTemplate.class);

}