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See:
Description
Class Summary | |
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AliasableEvalFunc<T> | Makes implementing and using UDFs easier by enabling named parameters. |
Assert | 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 | Similar to the SQL IN function, this function provides a convenient way to filter using a logical disjunction over many values. |
IntToBool | UDF which converts an Integer to a Boolean. |
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 | |
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DataFuException | |
FieldNotFound | Thrown by {see AliasableEvalFunc} when attempting to access an unknown field by name. |
Other useful utilities.
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