org.apache.phoenix.pig.util

Class TypeUtil

java.lang.Object

org.apache.phoenix.pig.util.TypeUtil

public final class TypeUtil
extends Object

Method Summary

Modifier and Type	Method and Description
static Object	castPigTypeToPhoenix(Object o, byte objectType, org.apache.phoenix.schema.types.PDataType targetPhoenixType) This method encodes a value with Phoenix data type.
static Byte	getPigDataTypeForPhoenixType(org.apache.phoenix.schema.types.PDataType phoenixDataType) Returns the mapping pig data type for a given phoenix data type.
static org.apache.phoenix.schema.types.PDataType	getType(Object obj, byte type) This method returns the most appropriate PDataType associated with the incoming Pig type.
static org.apache.pig.data.Tuple	transformToTuple(org.apache.phoenix.mapreduce.PhoenixRecordWritable record, org.apache.pig.ResourceSchema.ResourceFieldSchema[] projectedColumns) Transforms the PhoenixRecord to Pig Tuple.

Methods inherited from class java.lang.Object

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

Method Detail

getType

public static org.apache.phoenix.schema.types.PDataType getType(Object obj,
                                                                byte type)

This method returns the most appropriate PDataType associated with the incoming Pig type. Note for Pig DataType DATETIME, returns DATE as inferredSqlType. This is later used to make a cast to targetPhoenixType accordingly. See castPigTypeToPhoenix(Object, byte, PDataType)

Parameters:

obj -

Returns:

PDataType

castPigTypeToPhoenix

public static Object castPigTypeToPhoenix(Object o,
                                          byte objectType,
                                          org.apache.phoenix.schema.types.PDataType targetPhoenixType)
                                   throws SQLException

This method encodes a value with Phoenix data type. It begins with checking whether an object is TUPLE. A Tuple is mapped to a PArrayDataType . It then checks if it is BINARY and makes a call to castBytes(Object, PDataType) to convert bytes to targetPhoenixType. It returns a RuntimeException when object can not be coerced.

Parameters:

o -

targetPhoenixType -

Returns:

Object

Throws:

SQLException

transformToTuple

public static org.apache.pig.data.Tuple transformToTuple(org.apache.phoenix.mapreduce.PhoenixRecordWritable record,
                                                         org.apache.pig.ResourceSchema.ResourceFieldSchema[] projectedColumns)
                                                  throws IOException

Transforms the PhoenixRecord to Pig Tuple.

Parameters:

record -

projectedColumns -

Returns:

Throws:

IOException

getPigDataTypeForPhoenixType

public static Byte getPigDataTypeForPhoenixType(org.apache.phoenix.schema.types.PDataType phoenixDataType)

Returns the mapping pig data type for a given phoenix data type.

Parameters:

phoenixDataType -

Returns: