| /* |
| * 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.druid.query.aggregation.last; |
| |
| import org.apache.druid.query.aggregation.SerializablePairLongFloat; |
| import org.apache.druid.segment.vector.VectorObjectSelector; |
| import org.apache.druid.segment.vector.VectorValueSelector; |
| |
| import javax.annotation.Nullable; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Vectorized version of on heap 'last' aggregator for column selectors with type FLOAT.. |
| */ |
| public class FloatLastVectorAggregator extends NumericLastVectorAggregator |
| { |
| float lastValue; |
| |
| public FloatLastVectorAggregator(VectorValueSelector timeSelector, VectorObjectSelector objectSelector) |
| { |
| super(timeSelector, null, objectSelector); |
| lastValue = 0; |
| } |
| |
| public FloatLastVectorAggregator(VectorValueSelector timeSelector, VectorValueSelector valueSelector) |
| { |
| super(timeSelector, valueSelector, null); |
| lastValue = 0; |
| } |
| |
| @Override |
| void putValue(ByteBuffer buf, int position, int index) |
| { |
| lastValue = valueSelector != null ? valueSelector.getFloatVector()[index] : ((SerializablePairLongFloat) objectSelector.getObjectVector()[index]).getRhs(); |
| buf.putFloat(position, lastValue); |
| } |
| |
| |
| @Override |
| public void initValue(ByteBuffer buf, int position) |
| { |
| buf.putFloat(position, 0); |
| } |
| |
| |
| @Nullable |
| @Override |
| public Object get(ByteBuffer buf, int position) |
| { |
| final boolean rhsNull = isValueNull(buf, position); |
| return new SerializablePairLongFloat(buf.getLong(position), rhsNull ? null : buf.getFloat(position + VALUE_OFFSET)); |
| } |
| } |
| |