| /* |
| * 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.record; |
| |
| import org.apache.drill.exec.vector.AllocationHelper; |
| import org.apache.drill.exec.vector.ValueVector; |
| |
| /** |
| * VectorAccessible is an interface. Yet, several operations are done |
| * on VectorAccessible over and over gain. TODO. While Java 8 allows static |
| * methods on an interface, Drill uses Java 7, which does not. This |
| * class is a placeholder for common VectorAccessible methods that |
| * can migrate into the interface when Drill upgrades to Java 8. |
| */ |
| |
| public class VectorAccessibleUtilities { |
| |
| private VectorAccessibleUtilities() { } |
| |
| public static void clear(VectorAccessible va) { |
| for (final VectorWrapper<?> w : va) { |
| w.clear(); |
| } |
| } |
| |
| public static void clear(Iterable<ValueVector> iter) { |
| for (final ValueVector v : iter) { |
| v.clear(); |
| } |
| } |
| |
| public static void setValueCount(VectorAccessible va, int count) { |
| for (VectorWrapper<?> w: va) { |
| w.getValueVector().getMutator().setValueCount(count); |
| } |
| } |
| |
| public static void allocateVectors(VectorAccessible va, int targetRecordCount) { |
| for (VectorWrapper<?> w: va) { |
| AllocationHelper.allocateNew(w.getValueVector(), targetRecordCount); |
| } |
| } |
| } |