| /* |
| * 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.groupby.epinephelinae.column; |
| |
| import org.apache.druid.query.groupby.ResultRow; |
| import org.apache.druid.query.groupby.epinephelinae.Grouper; |
| import org.apache.druid.query.groupby.epinephelinae.GrouperBufferComparatorUtils; |
| import org.apache.druid.query.ordering.StringComparator; |
| import org.apache.druid.segment.ColumnValueSelector; |
| import org.apache.druid.segment.DimensionHandlerUtils; |
| |
| import javax.annotation.Nullable; |
| import java.nio.ByteBuffer; |
| |
| public class LongGroupByColumnSelectorStrategy implements GroupByColumnSelectorStrategy |
| { |
| |
| @Override |
| public int getGroupingKeySize() |
| { |
| return Long.BYTES; |
| } |
| |
| @Override |
| public void processValueFromGroupingKey( |
| GroupByColumnSelectorPlus selectorPlus, |
| ByteBuffer key, |
| ResultRow resultRow, |
| int keyBufferPosition |
| ) |
| { |
| final long val = key.getLong(keyBufferPosition); |
| resultRow.set(selectorPlus.getResultRowPosition(), val); |
| } |
| |
| @Override |
| public int initColumnValues(ColumnValueSelector selector, int columnIndex, Object[] valuess) |
| { |
| valuess[columnIndex] = selector.getLong(); |
| return 0; |
| } |
| |
| @Override |
| public int writeToKeyBuffer(int keyBufferPosition, ColumnValueSelector selector, ByteBuffer keyBuffer) |
| { |
| keyBuffer.putLong(keyBufferPosition, selector.getLong()); |
| return 0; |
| } |
| |
| @Override |
| public Grouper.BufferComparator bufferComparator( |
| int keyBufferPosition, |
| @Nullable StringComparator stringComparator |
| ) |
| { |
| return GrouperBufferComparatorUtils.makeBufferComparatorForLong( |
| keyBufferPosition, |
| true, |
| stringComparator |
| ); |
| } |
| |
| @Override |
| public void initGroupingKeyColumnValue( |
| int keyBufferPosition, |
| int dimensionIndex, |
| Object rowObj, |
| ByteBuffer keyBuffer, |
| int[] stack |
| ) |
| { |
| writeToKeyBuffer(keyBufferPosition, DimensionHandlerUtils.nullToZero((Long) rowObj), keyBuffer); |
| stack[dimensionIndex] = 1; |
| } |
| |
| @Override |
| public boolean checkRowIndexAndAddValueToGroupingKey( |
| int keyBufferPosition, |
| Object rowObj, |
| int rowValIdx, |
| ByteBuffer keyBuffer |
| ) |
| { |
| // rows from a long column always have a single value, multi-value is not currently supported |
| // this method handles row values after the first in a multivalued row, so just return false |
| return false; |
| } |
| |
| @Override |
| public void reset() |
| { |
| // Nothing to do. |
| } |
| |
| public void writeToKeyBuffer(int keyBufferPosition, long value, ByteBuffer keyBuffer) |
| { |
| keyBuffer.putLong(keyBufferPosition, value); |
| } |
| } |