org.apache.flink.table.module.hive.udf.generic

Class HiveGenericUDFInternalInterval

java.lang.Object

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

org.apache.flink.table.module.hive.udf.generic.HiveGenericUDFInternalInterval

All Implemented Interfaces:

Closeable, AutoCloseable

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

Counterpart of hive's org.apache.hadoop.hive.ql.udf.generic.GenericUDFInternalInterval. Hive's GenericUDFInternalInterval will decide what kind of interval it belongs to according the ast token number while initializing.

But the token number is fixed to Hive's parser, which causes the token number different from the tokens maintained in our ported HiveASTParser, and thus bring unexpected exception.

So, we port Hive's GenericUDFInternalInterval and adjust the judgement about the type of interval according our own ast token number.

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

Constructors

Constructor and Description
HiveGenericUDFInternalInterval()

Method Summary

Modifier and Type	Method and Description
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

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

Constructor Detail

HiveGenericUDFInternalInterval

public HiveGenericUDFInternalInterval()

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