brickhouse.udf.sketch
Class CombinePreviousSketchUDF

java.lang.Object
  org.apache.hadoop.hive.ql.udf.generic.GenericUDF
      brickhouse.udf.sketch.CombinePreviousSketchUDF

public class CombinePreviousSketchUDF
extends org.apache.hadoop.hive.ql.udf.generic.GenericUDF

UDF for combining two lists or two maps together, across multiple rows, ( in a grouping ), so that state can be store, and we can calculate things like "previous actors"

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredJavaObject, org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject

Constructor Summary

CombinePreviousSketchUDF()

Method Summary

Object	evaluate(org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject[] args)
List	evaluate(List<String> l1, List<String> l2)
String	getDisplayString(String[] args)
org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector	initialize(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] args)

Methods inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

getRequiredFiles, getRequiredJars, initializeAndFoldConstants

Methods inherited from class java.lang.Object

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

Constructor Detail

CombinePreviousSketchUDF

public CombinePreviousSketchUDF()

Method Detail

evaluate

public List evaluate(List<String> l1,
                     List<String> l2)

evaluate

public Object evaluate(org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject[] args)
                throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

evaluate in class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

getDisplayString

public String getDisplayString(String[] args)

Specified by:

getDisplayString in class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

initialize

public org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector initialize(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] args)
                                                                         throws org.apache.hadoop.hive.ql.exec.UDFArgumentException

Specified by:

initialize in class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

Throws:

org.apache.hadoop.hive.ql.exec.UDFArgumentException