org.apache.hadoop.hive.serde2.typeinfo

Class TypeInfoFactory

java.lang.Object

org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory

public final class TypeInfoFactory
extends Object

TypeInfoFactory can be used to create the TypeInfo object for any types. TypeInfo objects are all read-only so we can reuse them easily. TypeInfoFactory has internal cache to make sure we don't create 2 TypeInfo objects that represents the same type.

Field Summary

Fields

Modifier and Type	Field and Description
static PrimitiveTypeInfo	binaryTypeInfo
static PrimitiveTypeInfo	booleanTypeInfo
static PrimitiveTypeInfo	byteTypeInfo
static PrimitiveTypeInfo	charTypeInfo
static PrimitiveTypeInfo	dateTypeInfo
static DecimalTypeInfo	decimalTypeInfo A DecimalTypeInfo instance that has max precision and max scale.
static PrimitiveTypeInfo	doubleTypeInfo
static PrimitiveTypeInfo	floatTypeInfo
static PrimitiveTypeInfo	intervalDayTimeTypeInfo
static PrimitiveTypeInfo	intervalYearMonthTypeInfo
static PrimitiveTypeInfo	intTypeInfo
static PrimitiveTypeInfo	longTypeInfo
static PrimitiveTypeInfo	shortTypeInfo
static PrimitiveTypeInfo	stringTypeInfo
static PrimitiveTypeInfo	timestampTypeInfo
static PrimitiveTypeInfo	unknownTypeInfo
static PrimitiveTypeInfo	varcharTypeInfo
static PrimitiveTypeInfo	voidTypeInfo

Method Summary

Methods

Modifier and Type	Method and Description
static CharTypeInfo	getCharTypeInfo(int length)
static DecimalTypeInfo	getDecimalTypeInfo(int precision, int scale)
static TypeInfo	getListTypeInfo(TypeInfo elementTypeInfo)
static TypeInfo	getMapTypeInfo(TypeInfo keyTypeInfo, TypeInfo valueTypeInfo)
static PrimitiveTypeInfo	getPrimitiveTypeInfo(String typeName) Get PrimitiveTypeInfo instance for the given type name of a type including types with parameters, such as varchar(20).
static TypeInfo	getPrimitiveTypeInfoFromJavaPrimitive(Class<?> clazz)
static TypeInfo	getPrimitiveTypeInfoFromPrimitiveWritable(Class<?> clazz)
static TypeInfo	getStructTypeInfo(List<String> names, List<TypeInfo> typeInfos)
static TypeInfo	getUnionTypeInfo(List<TypeInfo> typeInfos)
static VarcharTypeInfo	getVarcharTypeInfo(int length)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

voidTypeInfo

public static final PrimitiveTypeInfo voidTypeInfo

booleanTypeInfo

public static final PrimitiveTypeInfo booleanTypeInfo

intTypeInfo

public static final PrimitiveTypeInfo intTypeInfo

longTypeInfo

public static final PrimitiveTypeInfo longTypeInfo

stringTypeInfo

public static final PrimitiveTypeInfo stringTypeInfo

charTypeInfo

public static final PrimitiveTypeInfo charTypeInfo

varcharTypeInfo

public static final PrimitiveTypeInfo varcharTypeInfo

floatTypeInfo

public static final PrimitiveTypeInfo floatTypeInfo

doubleTypeInfo

public static final PrimitiveTypeInfo doubleTypeInfo

byteTypeInfo

public static final PrimitiveTypeInfo byteTypeInfo

shortTypeInfo

public static final PrimitiveTypeInfo shortTypeInfo

dateTypeInfo

public static final PrimitiveTypeInfo dateTypeInfo

timestampTypeInfo

public static final PrimitiveTypeInfo timestampTypeInfo

intervalYearMonthTypeInfo

public static final PrimitiveTypeInfo intervalYearMonthTypeInfo

intervalDayTimeTypeInfo

public static final PrimitiveTypeInfo intervalDayTimeTypeInfo

binaryTypeInfo

public static final PrimitiveTypeInfo binaryTypeInfo

decimalTypeInfo

public static final DecimalTypeInfo decimalTypeInfo

A DecimalTypeInfo instance that has max precision and max scale.

unknownTypeInfo

public static final PrimitiveTypeInfo unknownTypeInfo

Method Detail

getPrimitiveTypeInfo

public static PrimitiveTypeInfo getPrimitiveTypeInfo(String typeName)

Get PrimitiveTypeInfo instance for the given type name of a type including types with parameters, such as varchar(20).

Parameters:

typeName - type name possibly with parameters.

Returns:

aPrimitiveTypeInfo instance

getCharTypeInfo

public static CharTypeInfo getCharTypeInfo(int length)

getVarcharTypeInfo

public static VarcharTypeInfo getVarcharTypeInfo(int length)

getDecimalTypeInfo

public static DecimalTypeInfo getDecimalTypeInfo(int precision,
                                 int scale)

getPrimitiveTypeInfoFromPrimitiveWritable

public static TypeInfo getPrimitiveTypeInfoFromPrimitiveWritable(Class<?> clazz)

getPrimitiveTypeInfoFromJavaPrimitive

public static TypeInfo getPrimitiveTypeInfoFromJavaPrimitive(Class<?> clazz)

getStructTypeInfo

public static TypeInfo getStructTypeInfo(List<String> names,
                         List<TypeInfo> typeInfos)

getUnionTypeInfo

public static TypeInfo getUnionTypeInfo(List<TypeInfo> typeInfos)

getListTypeInfo

public static TypeInfo getListTypeInfo(TypeInfo elementTypeInfo)

getMapTypeInfo

public static TypeInfo getMapTypeInfo(TypeInfo keyTypeInfo,
                      TypeInfo valueTypeInfo)