| /* |
| * 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.phoenix.schema.tuple; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.KeyValue.Type; |
| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; |
| import org.apache.phoenix.expression.Expression; |
| import org.apache.phoenix.hbase.index.ValueGetter; |
| import org.apache.phoenix.hbase.index.covered.update.ColumnReference; |
| |
| /** |
| * |
| * Class used to construct a {@link Tuple} in order to evaluate an {@link Expression} |
| */ |
| public class ValueGetterTuple extends BaseTuple { |
| private ValueGetter valueGetter; |
| |
| public ValueGetterTuple(ValueGetter valueGetter) { |
| this.valueGetter = valueGetter; |
| } |
| |
| public ValueGetterTuple() { |
| } |
| |
| @Override |
| public void getKey(ImmutableBytesWritable ptr) { |
| ptr.set(valueGetter.getRowKey()); |
| } |
| |
| @Override |
| public boolean isImmutable() { |
| return true; |
| } |
| |
| @Override |
| public KeyValue getValue(byte[] family, byte[] qualifier) { |
| ImmutableBytesWritable value = null; |
| try { |
| value = valueGetter.getLatestValue(new ColumnReference(family, qualifier)); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| byte[] rowKey = valueGetter.getRowKey(); |
| int valueOffset = 0; |
| int valueLength = 0; |
| byte[] valueBytes = HConstants.EMPTY_BYTE_ARRAY; |
| if (value != null) { |
| valueBytes = value.get(); |
| valueOffset = value.getOffset(); |
| valueLength = value.getLength(); |
| } |
| return new KeyValue(rowKey, 0, rowKey.length, family, 0, family.length, qualifier, 0, qualifier.length, HConstants.LATEST_TIMESTAMP, Type.Put, valueBytes, valueOffset, valueLength); |
| } |
| |
| @Override |
| public String toString() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public int size() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public KeyValue getValue(int index) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean getValue(byte[] family, byte[] qualifier, |
| ImmutableBytesWritable ptr) { |
| KeyValue kv = getValue(family, qualifier); |
| if (kv == null) |
| return false; |
| ptr.set(kv.getBuffer(), kv.getValueOffset(), kv.getValueLength()); |
| return true; |
| } |
| |
| } |