/**
* 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.TopN;
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.physical.impl.sort.RecordBatchData;
import org.apache.drill.exec.record.VectorContainer;
import org.apache.drill.exec.record.selection.SelectionVector4;
public interface PriorityQueue {
public void add(FragmentContext context, RecordBatchData batch) throws SchemaChangeException;
public void init(int limit, FragmentContext context, BufferAllocator allocator, boolean hasSv2) throws SchemaChangeException;
public void generate() throws SchemaChangeException;
public VectorContainer getHyperBatch();
public SelectionVector4 getHeapSv4();
public SelectionVector4 getFinalSv4();
public boolean validate();
public void resetQueue(VectorContainer container, SelectionVector4 vector4) throws SchemaChangeException;
public void cleanup();
public static TemplateClassDefinition<PriorityQueue> TEMPLATE_DEFINITION = new TemplateClassDefinition<PriorityQueue>(PriorityQueue.class, PriorityQueueTemplate.class);
}