| /** |
| * 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 edu.uci.ics.hivesterix.serde.lazy.objectinspector.primitive; |
| |
| import java.util.ArrayList; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector.PrimitiveCategory; |
| |
| /** |
| * LazyPrimitiveObjectInspectorFactory is the primary way to create new |
| * ObjectInspector instances. |
| * SerDe classes should call the static functions in this library to create an |
| * ObjectInspector to return to the caller of SerDe2.getObjectInspector(). |
| * The reason of having caches here is that ObjectInspector is because |
| * ObjectInspectors do not have an internal state - so ObjectInspectors with the |
| * same construction parameters should result in exactly the same |
| * ObjectInspector. |
| */ |
| public final class LazyPrimitiveObjectInspectorFactory { |
| |
| public static final LazyBooleanObjectInspector LAZY_BOOLEAN_OBJECT_INSPECTOR = new LazyBooleanObjectInspector(); |
| public static final LazyByteObjectInspector LAZY_BYTE_OBJECT_INSPECTOR = new LazyByteObjectInspector(); |
| public static final LazyShortObjectInspector LAZY_SHORT_OBJECT_INSPECTOR = new LazyShortObjectInspector(); |
| public static final LazyIntObjectInspector LAZY_INT_OBJECT_INSPECTOR = new LazyIntObjectInspector(); |
| public static final LazyLongObjectInspector LAZY_LONG_OBJECT_INSPECTOR = new LazyLongObjectInspector(); |
| public static final LazyFloatObjectInspector LAZY_FLOAT_OBJECT_INSPECTOR = new LazyFloatObjectInspector(); |
| public static final LazyDoubleObjectInspector LAZY_DOUBLE_OBJECT_INSPECTOR = new LazyDoubleObjectInspector(); |
| public static final LazyVoidObjectInspector LAZY_VOID_OBJECT_INSPECTOR = new LazyVoidObjectInspector(); |
| |
| static ConcurrentHashMap<ArrayList<Object>, LazyStringObjectInspector> cachedLazyStringObjectInspector = new ConcurrentHashMap<ArrayList<Object>, LazyStringObjectInspector>(); |
| |
| public static LazyStringObjectInspector getLazyStringObjectInspector(boolean escaped, byte escapeChar) { |
| ArrayList<Object> signature = new ArrayList<Object>(); |
| signature.add(Boolean.valueOf(escaped)); |
| signature.add(Byte.valueOf(escapeChar)); |
| LazyStringObjectInspector result = cachedLazyStringObjectInspector.get(signature); |
| if (result == null) { |
| result = new LazyStringObjectInspector(escaped, escapeChar); |
| cachedLazyStringObjectInspector.put(signature, result); |
| } |
| return result; |
| } |
| |
| public static AbstractPrimitiveLazyObjectInspector<?> getLazyObjectInspector(PrimitiveCategory primitiveCategory, |
| boolean escaped, byte escapeChar) { |
| |
| switch (primitiveCategory) { |
| case BOOLEAN: |
| return LAZY_BOOLEAN_OBJECT_INSPECTOR; |
| case BYTE: |
| return LAZY_BYTE_OBJECT_INSPECTOR; |
| case SHORT: |
| return LAZY_SHORT_OBJECT_INSPECTOR; |
| case INT: |
| return LAZY_INT_OBJECT_INSPECTOR; |
| case LONG: |
| return LAZY_LONG_OBJECT_INSPECTOR; |
| case FLOAT: |
| return LAZY_FLOAT_OBJECT_INSPECTOR; |
| case DOUBLE: |
| return LAZY_DOUBLE_OBJECT_INSPECTOR; |
| case STRING: |
| return getLazyStringObjectInspector(escaped, escapeChar); |
| case VOID: |
| return LAZY_VOID_OBJECT_INSPECTOR; |
| default: |
| throw new RuntimeException("Internal error: Cannot find ObjectInspector " + " for " + primitiveCategory); |
| } |
| } |
| |
| private LazyPrimitiveObjectInspectorFactory() { |
| // prevent instantiation |
| } |
| |
| } |