Package datafu.pig.util

Other useful utilities.

See:
Description

Class Summary

AliasableEvalFunc<T>	Makes implementing and using UDFs easier by enabling named parameters.
Assert	Deprecated. Use AssertUDF instead.
AssertUDF	Filter function which asserts that a value is true.
BoolToInt	UDF which converts a Boolean to an Integer.
Coalesce	Returns the first non-null value from a tuple, just like COALESCE in SQL.
ContextualEvalFunc<T>	An abstract class which enables UDFs to store instance properties on the front end which will be available on the back end.
In	Deprecated. Use InUDF instead.
IntToBool	UDF which converts an Integer to a Boolean.
InUDF	Similar to the SQL IN function, this function provides a convenient way to filter using a logical disjunction over many values.
SimpleEvalFunc<T>	Uses reflection to makes writing simple wrapper Pig UDFs easier.
TransposeTupleToBag	Performs a transpose on a tuple, resulting in a bag of key, value fields where the key is the column name and the value is the value of that column in the tuple.

Exception Summary

DataFuException
FieldNotFound	Thrown by {see AliasableEvalFunc} when attempting to access an unknown field by name.

Package datafu.pig.util Description

Other useful utilities.