| /* |
| * 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.vector.complex.fn; |
| |
| import io.netty.buffer.DrillBuf; |
| |
| import java.io.IOException; |
| |
| import org.apache.drill.exec.expr.holders.VarBinaryHolder; |
| import org.apache.drill.exec.expr.holders.VarCharHolder; |
| |
| import org.apache.drill.shaded.guava.com.google.common.base.Charsets; |
| |
| class WorkingBuffer { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(WorkingBuffer.class); |
| |
| private DrillBuf workBuf; |
| |
| public WorkingBuffer(DrillBuf workBuf) { |
| this.workBuf = workBuf; |
| } |
| |
| private void ensure(int length) { |
| workBuf = workBuf.reallocIfNeeded(length); |
| } |
| |
| public void prepareVarCharHolder(String value, VarCharHolder h) throws IOException { |
| byte[] b = value.getBytes(Charsets.UTF_8); |
| ensure(b.length); |
| workBuf.setBytes(0, b); |
| h.start = 0; |
| h.end = b.length; |
| h.buffer = workBuf; |
| } |
| |
| public int prepareVarCharHolder(String value) throws IOException { |
| byte[] b = value.getBytes(Charsets.UTF_8); |
| ensure(b.length); |
| workBuf.setBytes(0, b); |
| return b.length; |
| } |
| |
| public void prepareBinary(byte[] b, VarBinaryHolder h) throws IOException { |
| ensure(b.length); |
| workBuf.setBytes(0, b); |
| h.start = 0; |
| h.end = b.length; |
| h.buffer = workBuf; |
| } |
| |
| public DrillBuf getBuf(){ |
| return workBuf; |
| } |
| |
| } |