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/**
* 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.common;
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.RecordBatch;
import org.apache.drill.exec.record.VectorContainer;
import org.apache.drill.common.exceptions.RetryAfterSpillException;
public interface HashTable {
public static TemplateClassDefinition<HashTable> TEMPLATE_DEFINITION =
new TemplateClassDefinition<HashTable>(HashTable.class, HashTableTemplate.class);
/**
* The initial default capacity of the hash table (in terms of number of buckets).
*/
static final public int DEFAULT_INITIAL_CAPACITY = 1 << 16;
/**
* The maximum capacity of the hash table (in terms of number of buckets).
*/
static final public int MAXIMUM_CAPACITY = 1 << 30;
/**
* The default load factor of a hash table.
*/
static final public float DEFAULT_LOAD_FACTOR = 0.75f;
static public enum PutStatus {KEY_PRESENT, KEY_ADDED, NEW_BATCH_ADDED, KEY_ADDED_LAST, PUT_FAILED;}
/**
* The batch size used for internal batch holders
*/
static final public int BATCH_SIZE = Character.MAX_VALUE + 1;
static final public int BATCH_MASK = 0x0000FFFF;
public void setup(HashTableConfig htConfig, FragmentContext context, BufferAllocator allocator, RecordBatch incomingBuild, RecordBatch incomingProbe, RecordBatch outgoing, VectorContainer htContainerOrig);
public void updateBatches() throws SchemaChangeException;
public int getHashCode(int incomingRowIdx) throws SchemaChangeException;
public PutStatus put(int incomingRowIdx, IndexPointer htIdxHolder, int hashCode) throws SchemaChangeException, RetryAfterSpillException;
public int containsKey(int incomingRowIdx, boolean isProbe) throws SchemaChangeException;
public void getStats(HashTableStats stats);
public int size();
public boolean isEmpty();
public void clear();
public void reinit(RecordBatch newIncoming);
public void reset();
public void setMaxVarcharSize(int size);
public boolean outputKeys(int batchIdx, VectorContainer outContainer, int outStartIndex, int numRecords, int numExpectedRecords);
}
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