/**
* 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.hadoop.hive.serde2.objectinspector.primitive;
import java.util.EnumMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.hive.serde2.io.ByteWritable;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.hive.serde2.io.HiveCharWritable;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.io.HiveIntervalDayTimeWritable;
import org.apache.hadoop.hive.serde2.io.HiveIntervalYearMonthWritable;
import org.apache.hadoop.hive.serde2.io.HiveVarcharWritable;
import org.apache.hadoop.hive.serde2.io.ShortWritable;
import org.apache.hadoop.hive.serde2.io.TimestampTZWritable;
import org.apache.hadoop.hive.serde2.io.TimestampWritable;
import org.apache.hadoop.hive.serde2.objectinspector.ConstantObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector.PrimitiveCategory;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorUtils.PrimitiveTypeEntry;
import org.apache.hadoop.hive.serde2.typeinfo.CharTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import org.apache.hadoop.hive.serde2.typeinfo.VarcharTypeInfo;
import org.apache.hadoop.io.BooleanWritable;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.FloatWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
/**
* PrimitiveObjectInspectorFactory is the primary way to create new
* PrimitiveObjectInspector instances.
*
* 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 PrimitiveObjectInspectorFactory {
public static final WritableBooleanObjectInspector writableBooleanObjectInspector =
new WritableBooleanObjectInspector();
public static final WritableByteObjectInspector writableByteObjectInspector =
new WritableByteObjectInspector();
public static final WritableShortObjectInspector writableShortObjectInspector =
new WritableShortObjectInspector();
public static final WritableIntObjectInspector writableIntObjectInspector =
new WritableIntObjectInspector();
public static final WritableLongObjectInspector writableLongObjectInspector =
new WritableLongObjectInspector();
public static final WritableFloatObjectInspector writableFloatObjectInspector =
new WritableFloatObjectInspector();
public static final WritableDoubleObjectInspector writableDoubleObjectInspector =
new WritableDoubleObjectInspector();
public static final WritableStringObjectInspector writableStringObjectInspector =
new WritableStringObjectInspector();
public static final WritableHiveCharObjectInspector writableHiveCharObjectInspector =
new WritableHiveCharObjectInspector((CharTypeInfo) TypeInfoFactory.charTypeInfo);
public static final WritableHiveVarcharObjectInspector writableHiveVarcharObjectInspector =
new WritableHiveVarcharObjectInspector((VarcharTypeInfo) TypeInfoFactory.varcharTypeInfo);
public static final WritableVoidObjectInspector writableVoidObjectInspector =
new WritableVoidObjectInspector();
public static final WritableDateObjectInspector writableDateObjectInspector =
new WritableDateObjectInspector();
public static final WritableTimestampObjectInspector writableTimestampObjectInspector =
new WritableTimestampObjectInspector();
public static final WritableTimestampTZObjectInspector writableTimestampTZObjectInspector =
new WritableTimestampTZObjectInspector();
public static final WritableHiveIntervalYearMonthObjectInspector writableHiveIntervalYearMonthObjectInspector =
new WritableHiveIntervalYearMonthObjectInspector();
public static final WritableHiveIntervalDayTimeObjectInspector writableHiveIntervalDayTimeObjectInspector =
new WritableHiveIntervalDayTimeObjectInspector();
public static final WritableBinaryObjectInspector writableBinaryObjectInspector =
new WritableBinaryObjectInspector();
public static final WritableHiveDecimalObjectInspector writableHiveDecimalObjectInspector =
new WritableHiveDecimalObjectInspector(TypeInfoFactory.decimalTypeInfo);
// Map from PrimitiveTypeInfo to AbstractPrimitiveWritableObjectInspector.
private static ConcurrentHashMap<PrimitiveTypeInfo, AbstractPrimitiveWritableObjectInspector> cachedPrimitiveWritableInspectorCache =
new ConcurrentHashMap<PrimitiveTypeInfo, AbstractPrimitiveWritableObjectInspector>();
static {
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.BOOLEAN_TYPE_NAME),
writableBooleanObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.TINYINT_TYPE_NAME),
writableByteObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.SMALLINT_TYPE_NAME),
writableShortObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.INT_TYPE_NAME),
writableIntObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.BIGINT_TYPE_NAME),
writableLongObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.FLOAT_TYPE_NAME),
writableFloatObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.DOUBLE_TYPE_NAME),
writableDoubleObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.STRING_TYPE_NAME),
writableStringObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.charTypeInfo, writableHiveCharObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.varcharTypeInfo, writableHiveVarcharObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.VOID_TYPE_NAME),
writableVoidObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.DATE_TYPE_NAME),
writableDateObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.TIMESTAMP_TYPE_NAME),
writableTimestampObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(
serdeConstants.TIMESTAMPTZ_TYPE_NAME), writableTimestampTZObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.INTERVAL_YEAR_MONTH_TYPE_NAME),
writableHiveIntervalYearMonthObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.INTERVAL_DAY_TIME_TYPE_NAME),
writableHiveIntervalDayTimeObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.BINARY_TYPE_NAME),
writableBinaryObjectInspector);
cachedPrimitiveWritableInspectorCache.put(TypeInfoFactory.decimalTypeInfo, writableHiveDecimalObjectInspector);
}
private static Map<PrimitiveCategory, AbstractPrimitiveWritableObjectInspector> primitiveCategoryToWritableOI =
new EnumMap<PrimitiveCategory, AbstractPrimitiveWritableObjectInspector>(PrimitiveCategory.class);
static {
primitiveCategoryToWritableOI.put(PrimitiveCategory.BOOLEAN, writableBooleanObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.BYTE, writableByteObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.SHORT, writableShortObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.INT, writableIntObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.LONG, writableLongObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.FLOAT, writableFloatObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.DOUBLE, writableDoubleObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.STRING, writableStringObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.CHAR, writableHiveCharObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.VARCHAR, writableHiveVarcharObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.VOID, writableVoidObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.DATE, writableDateObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.TIMESTAMP, writableTimestampObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.TIMESTAMPTZ,
writableTimestampTZObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.INTERVAL_YEAR_MONTH, writableHiveIntervalYearMonthObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.INTERVAL_DAY_TIME, writableHiveIntervalDayTimeObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.BINARY, writableBinaryObjectInspector);
primitiveCategoryToWritableOI.put(PrimitiveCategory.DECIMAL, writableHiveDecimalObjectInspector);
}
public static final JavaBooleanObjectInspector javaBooleanObjectInspector =
new JavaBooleanObjectInspector();
public static final JavaByteObjectInspector javaByteObjectInspector =
new JavaByteObjectInspector();
public static final JavaShortObjectInspector javaShortObjectInspector =
new JavaShortObjectInspector();
public static final JavaIntObjectInspector javaIntObjectInspector =
new JavaIntObjectInspector();
public static final JavaLongObjectInspector javaLongObjectInspector =
new JavaLongObjectInspector();
public static final JavaFloatObjectInspector javaFloatObjectInspector =
new JavaFloatObjectInspector();
public static final JavaDoubleObjectInspector javaDoubleObjectInspector =
new JavaDoubleObjectInspector();
public static final JavaStringObjectInspector javaStringObjectInspector =
new JavaStringObjectInspector();
public static final JavaHiveCharObjectInspector javaHiveCharObjectInspector =
new JavaHiveCharObjectInspector((CharTypeInfo) TypeInfoFactory.charTypeInfo);
public static final JavaHiveVarcharObjectInspector javaHiveVarcharObjectInspector =
new JavaHiveVarcharObjectInspector((VarcharTypeInfo) TypeInfoFactory.varcharTypeInfo);
public static final JavaVoidObjectInspector javaVoidObjectInspector =
new JavaVoidObjectInspector();
public static final JavaDateObjectInspector javaDateObjectInspector =
new JavaDateObjectInspector();
public static final JavaTimestampObjectInspector javaTimestampObjectInspector =
new JavaTimestampObjectInspector();
public static final JavaTimestampTZObjectInspector javaTimestampTZObjectInspector =
new JavaTimestampTZObjectInspector();
public static final JavaHiveIntervalYearMonthObjectInspector javaHiveIntervalYearMonthObjectInspector =
new JavaHiveIntervalYearMonthObjectInspector();
public static final JavaHiveIntervalDayTimeObjectInspector javaHiveIntervalDayTimeObjectInspector =
new JavaHiveIntervalDayTimeObjectInspector();
public static final JavaBinaryObjectInspector javaByteArrayObjectInspector =
new JavaBinaryObjectInspector();
public static final JavaHiveDecimalObjectInspector javaHiveDecimalObjectInspector =
new JavaHiveDecimalObjectInspector(TypeInfoFactory.decimalTypeInfo);
// Map from PrimitiveTypeInfo to AbstractPrimitiveJavaObjectInspector.
private static ConcurrentHashMap<PrimitiveTypeInfo, AbstractPrimitiveJavaObjectInspector> cachedPrimitiveJavaInspectorCache =
new ConcurrentHashMap<PrimitiveTypeInfo, AbstractPrimitiveJavaObjectInspector>();
static {
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.BOOLEAN_TYPE_NAME),
javaBooleanObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.TINYINT_TYPE_NAME),
javaByteObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.SMALLINT_TYPE_NAME),
javaShortObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.INT_TYPE_NAME),
javaIntObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.BIGINT_TYPE_NAME),
javaLongObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.FLOAT_TYPE_NAME),
javaFloatObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.DOUBLE_TYPE_NAME),
javaDoubleObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.STRING_TYPE_NAME),
javaStringObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.charTypeInfo, javaHiveCharObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.varcharTypeInfo, javaHiveVarcharObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.VOID_TYPE_NAME),
javaVoidObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.DATE_TYPE_NAME),
javaDateObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.TIMESTAMP_TYPE_NAME),
javaTimestampObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.timestampTZTypeInfo,
javaTimestampTZObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.INTERVAL_YEAR_MONTH_TYPE_NAME),
javaHiveIntervalYearMonthObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.INTERVAL_DAY_TIME_TYPE_NAME),
javaHiveIntervalDayTimeObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.getPrimitiveTypeInfo(serdeConstants.BINARY_TYPE_NAME),
javaByteArrayObjectInspector);
cachedPrimitiveJavaInspectorCache.put(TypeInfoFactory.decimalTypeInfo, javaHiveDecimalObjectInspector);
}
private static Map<PrimitiveCategory, AbstractPrimitiveJavaObjectInspector> primitiveCategoryToJavaOI =
new EnumMap<PrimitiveCategory, AbstractPrimitiveJavaObjectInspector>(PrimitiveCategory.class);
static {
primitiveCategoryToJavaOI.put(PrimitiveCategory.BOOLEAN, javaBooleanObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.BYTE, javaByteObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.SHORT, javaShortObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.INT, javaIntObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.LONG, javaLongObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.FLOAT, javaFloatObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.DOUBLE, javaDoubleObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.STRING, javaStringObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.CHAR, javaHiveCharObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.VARCHAR, javaHiveVarcharObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.VOID, javaVoidObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.DATE, javaDateObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.TIMESTAMP, javaTimestampObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.TIMESTAMPTZ, javaTimestampTZObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.INTERVAL_YEAR_MONTH, javaHiveIntervalYearMonthObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.INTERVAL_DAY_TIME, javaHiveIntervalDayTimeObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.BINARY, javaByteArrayObjectInspector);
primitiveCategoryToJavaOI.put(PrimitiveCategory.DECIMAL, javaHiveDecimalObjectInspector);
}
/**
* Returns the PrimitiveWritableObjectInspector for the PrimitiveCategory.
*
* @param primitiveCategory
*/
public static AbstractPrimitiveWritableObjectInspector getPrimitiveWritableObjectInspector(
PrimitiveCategory primitiveCategory) {
AbstractPrimitiveWritableObjectInspector result = primitiveCategoryToWritableOI.get(primitiveCategory);
if (result == null) {
throw new RuntimeException("Internal error: Cannot find ObjectInspector "
+ " for " + primitiveCategory);
}
return result;
}
/**
* Returns the PrimitiveWritableObjectInspector for the given type info
* @param typeInfo PrimitiveTypeInfo instance
* @return AbstractPrimitiveWritableObjectInspector instance
*/
public static AbstractPrimitiveWritableObjectInspector getPrimitiveWritableObjectInspector(
PrimitiveTypeInfo typeInfo) {
AbstractPrimitiveWritableObjectInspector result = cachedPrimitiveWritableInspectorCache.get(typeInfo);
if (result != null) {
return result;
}
switch (typeInfo.getPrimitiveCategory()) {
case CHAR:
result = new WritableHiveCharObjectInspector((CharTypeInfo) typeInfo);
break;
case VARCHAR:
result = new WritableHiveVarcharObjectInspector((VarcharTypeInfo)typeInfo);
break;
case DECIMAL:
result = new WritableHiveDecimalObjectInspector((DecimalTypeInfo)typeInfo);
break;
default:
throw new RuntimeException("Failed to create object inspector for " + typeInfo );
}
AbstractPrimitiveWritableObjectInspector prev =
cachedPrimitiveWritableInspectorCache.putIfAbsent(typeInfo, result);
if (prev != null) {
result = prev;
}
return result;
}
/**
* Returns a PrimitiveWritableObjectInspector which implements ConstantObjectInspector
* for the PrimitiveCategory.
*
* @param typeInfo
* @param value
*/
public static ConstantObjectInspector getPrimitiveWritableConstantObjectInspector(
PrimitiveTypeInfo typeInfo, Object value) {
switch (typeInfo.getPrimitiveCategory()) {
case BOOLEAN:
return new WritableConstantBooleanObjectInspector((BooleanWritable)value);
case BYTE:
return new WritableConstantByteObjectInspector((ByteWritable)value);
case SHORT:
return new WritableConstantShortObjectInspector((ShortWritable)value);
case INT:
return new WritableConstantIntObjectInspector((IntWritable)value);
case LONG:
return new WritableConstantLongObjectInspector((LongWritable)value);
case FLOAT:
return new WritableConstantFloatObjectInspector((FloatWritable)value);
case DOUBLE:
return new WritableConstantDoubleObjectInspector((DoubleWritable)value);
case STRING:
return new WritableConstantStringObjectInspector((Text)value);
case CHAR:
return new WritableConstantHiveCharObjectInspector((CharTypeInfo) typeInfo,
(HiveCharWritable) value);
case VARCHAR:
return new WritableConstantHiveVarcharObjectInspector((VarcharTypeInfo)typeInfo,
(HiveVarcharWritable)value);
case DATE:
return new WritableConstantDateObjectInspector((DateWritable)value);
case TIMESTAMP:
return new WritableConstantTimestampObjectInspector((TimestampWritable)value);
case TIMESTAMPTZ:
return new WritableConstantTimestampTZObjectInspector((TimestampTZWritable) value);
case INTERVAL_YEAR_MONTH:
return new WritableConstantHiveIntervalYearMonthObjectInspector((HiveIntervalYearMonthWritable) value);
case INTERVAL_DAY_TIME:
return new WritableConstantHiveIntervalDayTimeObjectInspector((HiveIntervalDayTimeWritable) value);
case DECIMAL:
return new WritableConstantHiveDecimalObjectInspector((DecimalTypeInfo)typeInfo, (HiveDecimalWritable)value);
case BINARY:
return new WritableConstantBinaryObjectInspector((BytesWritable)value);
case VOID:
return new WritableVoidObjectInspector();
default:
throw new RuntimeException("Internal error: Cannot find "
+ "ConstantObjectInspector for " + typeInfo);
}
}
/**
* Returns the PrimitiveJavaObjectInspector for the PrimitiveCategory.
*
* @param primitiveCategory
*/
public static AbstractPrimitiveJavaObjectInspector getPrimitiveJavaObjectInspector(
PrimitiveCategory primitiveCategory) {
AbstractPrimitiveJavaObjectInspector result = primitiveCategoryToJavaOI.get(primitiveCategory);
if (result == null) {
throw new RuntimeException("Internal error: Cannot find ObjectInspector "
+ " for " + primitiveCategory);
}
return result;
}
/**
* Returns the PrimitiveJavaObjectInspector for the given PrimitiveTypeInfo instance,
* @param typeInfo PrimitiveTypeInfo instance
* @return AbstractPrimitiveJavaObjectInspector instance
*/
public static AbstractPrimitiveJavaObjectInspector getPrimitiveJavaObjectInspector(
PrimitiveTypeInfo typeInfo) {
AbstractPrimitiveJavaObjectInspector result = cachedPrimitiveJavaInspectorCache.get(typeInfo);
if (result != null) {
return result;
}
switch (typeInfo.getPrimitiveCategory()) {
case CHAR:
result = new JavaHiveCharObjectInspector((CharTypeInfo) typeInfo);
break;
case VARCHAR:
result = new JavaHiveVarcharObjectInspector((VarcharTypeInfo)typeInfo);
break;
case DECIMAL:
result = new JavaHiveDecimalObjectInspector((DecimalTypeInfo)typeInfo);
break;
default:
throw new RuntimeException("Failed to create Java ObjectInspector for " + typeInfo);
}
AbstractPrimitiveJavaObjectInspector prev =
cachedPrimitiveJavaInspectorCache.putIfAbsent(typeInfo, result);
if (prev != null) {
result = prev;
}
return result;
}
/**
* Returns an ObjectInspector for a primitive Class. The Class can be a Hive
* Writable class, or a Java Primitive Class.
*
* A runtimeException will be thrown if the class is not recognized as a
* primitive type by Hive.
*/
public static PrimitiveObjectInspector getPrimitiveObjectInspectorFromClass(
Class<?> c) {
if (Writable.class.isAssignableFrom(c)) {
// It is a writable class
PrimitiveTypeEntry te = PrimitiveObjectInspectorUtils
.getTypeEntryFromPrimitiveWritableClass(c);
if (te == null) {
throw new RuntimeException("Internal error: Cannot recognize " + c);
}
return PrimitiveObjectInspectorFactory
.getPrimitiveWritableObjectInspector(te.primitiveCategory);
} else {
// It is a Java class
PrimitiveTypeEntry te = PrimitiveObjectInspectorUtils
.getTypeEntryFromPrimitiveJavaClass(c);
if (te == null) {
throw new RuntimeException("Internal error: Cannot recognize " + c);
}
return PrimitiveObjectInspectorFactory
.getPrimitiveJavaObjectInspector(te.primitiveCategory);
}
}
private PrimitiveObjectInspectorFactory() {
// prevent instantiation
}
}