org.apache.hadoop.hive.ql.udf.generic

Class GenericUDFToUnixTimeStamp

java.lang.Object

org.apache.hadoop.hive.ql.udf.generic.GenericUDF

org.apache.hadoop.hive.ql.udf.generic.GenericUDFToUnixTimeStamp

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

GenericUDFUnixTimeStamp

public class GenericUDFToUnixTimeStamp
extends GenericUDF

deterministic version of UDFUnixTimeStamp. enforces argument

Nested Class Summary

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

GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.hadoop.io.LongWritable	retValue

Constructor Summary

Constructors

Constructor and Description
GenericUDFToUnixTimeStamp()

Method Summary

Modifier and Type	Method and Description
Object	evaluate(GenericUDF.DeferredObject[] arguments) Evaluate the GenericUDF with the arguments.
String	getDisplayString(String[] children) Get the String to be displayed in explain.
protected String	getName()
ObjectInspector	initialize(ObjectInspector[] arguments) Initialize this GenericUDF.
protected void	initializeInput(ObjectInspector[] arguments)
protected static void	setValueFromTs(org.apache.hadoop.io.LongWritable value, Timestamp timestamp)

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

checkArgGroups, checkArgPrimitive, checkArgsSize, close, configure, copyToNewInstance, flip, getArgOrder, getConstantBooleanValue, getConstantIntValue, getConstantStringValue, getDateValue, getDoubleValue, getFuncName, getIntervalDayTimeValue, getIntervalYearMonthValue, getIntValue, getLongValue, getRequiredFiles, getRequiredJars, getStandardDisplayString, getStandardDisplayString, getStringValue, getTimestampValue, getUdfName, initializeAndFoldConstants, negative, obtainDateConverter, obtainDoubleConverter, obtainIntConverter, obtainLongConverter, obtainStringConverter, obtainTimestampConverter

Methods inherited from class java.lang.Object

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

Field Detail

retValue

protected final transient org.apache.hadoop.io.LongWritable retValue

Constructor Detail

GenericUDFToUnixTimeStamp

public GenericUDFToUnixTimeStamp()

Method Detail

initialize

public ObjectInspector initialize(ObjectInspector[] arguments)
                           throws UDFArgumentException

Description copied from class: GenericUDF

Initialize this GenericUDF. This will be called once and only once per GenericUDF instance.

Specified by:

initialize in class GenericUDF

Parameters:

arguments - The ObjectInspector for the arguments

Returns:

The ObjectInspector for the return value

Throws:

UDFArgumentException - Thrown when arguments have wrong types, wrong length, etc.

initializeInput

protected void initializeInput(ObjectInspector[] arguments)
                        throws UDFArgumentException

Throws:

UDFArgumentException

getName

protected String getName()

evaluate

public Object evaluate(GenericUDF.DeferredObject[] arguments)
                throws HiveException

Description copied from class: GenericUDF

Evaluate the GenericUDF with the arguments.

Specified by:

evaluate in class GenericUDF

Parameters:

arguments - The arguments as DeferedObject, use DeferedObject.get() to get the actual argument Object. The Objects can be inspected by the ObjectInspectors passed in the initialize call.

Returns:

The

Throws:

HiveException

setValueFromTs

protected static void setValueFromTs(org.apache.hadoop.io.LongWritable value,
                                     Timestamp timestamp)

getDisplayString

public String getDisplayString(String[] children)

Description copied from class: GenericUDF

Get the String to be displayed in explain.

Specified by:

getDisplayString in class GenericUDF