| /* |
| * 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.store.mapr.db.binary; |
| |
| import org.apache.drill.shaded.guava.com.google.common.base.Charsets; |
| import io.netty.buffer.ByteBuf; |
| import org.apache.drill.common.expression.FunctionCall; |
| import org.apache.drill.common.expression.LogicalExpression; |
| import org.apache.drill.common.expression.ValueExpressions; |
| import org.apache.drill.exec.store.hbase.CompareFunctionsProcessor; |
| import org.apache.hadoop.hbase.util.Order; |
| import org.apache.hadoop.hbase.util.PositionedByteRange; |
| import org.apache.hadoop.hbase.util.SimplePositionedMutableByteRange; |
| |
| class MaprDBCompareFunctionsProcessor extends CompareFunctionsProcessor { |
| |
| public MaprDBCompareFunctionsProcessor(String functionName) { |
| super(functionName); |
| } |
| |
| public static MaprDBCompareFunctionsProcessor createFunctionsProcessorInstance(FunctionCall call, boolean nullComparatorSupported) { |
| String functionName = call.getName(); |
| MaprDBCompareFunctionsProcessor evaluator = new MaprDBCompareFunctionsProcessor(functionName); |
| |
| return createFunctionsProcessorInstanceInternal(call, nullComparatorSupported, evaluator); |
| } |
| |
| @Override |
| protected ByteBuf getByteBuf(LogicalExpression valueArg, String encodingType) { |
| switch (encodingType) { |
| case "UTF8_OB": |
| case "UTF8_OBD": |
| if (valueArg instanceof ValueExpressions.QuotedString) { |
| int stringLen = ((ValueExpressions.QuotedString) valueArg).value.getBytes(Charsets.UTF_8).length; |
| ByteBuf bb = newByteBuf(stringLen + 2, true); |
| PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, stringLen + 2); |
| if (encodingType.endsWith("_OBD")) { |
| org.apache.hadoop.hbase.util.OrderedBytes.encodeString(br, ((ValueExpressions.QuotedString) valueArg).value, |
| Order.DESCENDING); |
| setSortOrderAscending(false); |
| } else { |
| org.apache.hadoop.hbase.util.OrderedBytes.encodeString(br, ((ValueExpressions.QuotedString) valueArg).value, |
| Order.ASCENDING); |
| } |
| return bb; |
| } |
| } |
| return null; |
| } |
| } |