org.apache.hadoop.hive.ql.udf
Class UDFOPEqual

java.lang.Object
  extended by org.apache.hadoop.hive.ql.exec.UDF
      extended by org.apache.hadoop.hive.ql.udf.UDFBaseCompare
          extended by org.apache.hadoop.hive.ql.udf.UDFOPEqual

public class UDFOPEqual
extends UDFBaseCompare

The reason that we list evaluate methods with all numeric types is for better performance; otherwise a single method that takes (Number a, Number b) and use a.doubleValue() == b.doubleValue() is enough.


Constructor Summary
UDFOPEqual()
           
 
Method Summary
 Boolean evaluate(Byte a, Byte b)
           
 Boolean evaluate(Date a, Date b)
           
 Boolean evaluate(Double a, Double b)
           
 Boolean evaluate(Float a, Float b)
           
 Boolean evaluate(Integer a, Integer b)
           
 Boolean evaluate(Long a, Long b)
           
 Boolean evaluate(String a, String b)
           
 
Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF
getResolver, setResolver
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

UDFOPEqual

public UDFOPEqual()
Method Detail

evaluate

public Boolean evaluate(String a,
                        String b)

evaluate

public Boolean evaluate(Byte a,
                        Byte b)

evaluate

public Boolean evaluate(Integer a,
                        Integer b)

evaluate

public Boolean evaluate(Long a,
                        Long b)

evaluate

public Boolean evaluate(Float a,
                        Float b)

evaluate

public Boolean evaluate(Double a,
                        Double b)
Specified by:
evaluate in class UDFBaseCompare

evaluate

public Boolean evaluate(Date a,
                        Date b)


Copyright © 2009 The Apache Software Foundation