brickhouse.udf.json
Class JsonMapUDF

java.lang.Object
  org.apache.hadoop.hive.ql.udf.generic.GenericUDF
      brickhouse.udf.json.JsonMapUDF

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

Given a JSON String containing a map with values of all the same type, return a Hive map of key-value pairs

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

JsonMapUDF()

Method Summary

Object	evaluate(org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject[] arguments)
String	getDisplayString(String[] children)
org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector	initialize(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] arguments)

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

JsonMapUDF

public JsonMapUDF()

Method Detail

initialize

public org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector initialize(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] arguments)
                                                                         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

evaluate

public Object evaluate(org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject[] arguments)
                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[] children)

Specified by:

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