org.apache.pig.piggybank.evaluation.string
Class LASTINDEXOF
java.lang.Object
org.apache.pig.EvalFunc<Integer>
org.apache.pig.piggybank.evaluation.string.LASTINDEXOF
public class LASTINDEXOF
- extends EvalFunc<Integer>
string.INSTR implements eval function to search for the last occurrence of a string
Returns null on error
Example:
register pigudfs.jar;
A = load 'mydata' as (name);
B = foreach A generate string.LASTINDEXOF(name, ",");
dump B;
Methods inherited from class org.apache.pig.EvalFunc |
finish, getArgToFuncMapping, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, isAsynchronous, progress, setPigLogger, setReporter, warn |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LASTINDEXOF
public LASTINDEXOF()
exec
public Integer exec(Tuple input)
throws IOException
- Finds the last location of a substring in a given string.
- Specified by:
exec
in class EvalFunc<Integer>
- Parameters:
input
- tuple:
- the string to process
- the substring to find
- Returns:
- last location of substring, or null in case of processing errors.
- Throws:
IOException
outputSchema
public Schema outputSchema(Schema input)
- Overrides:
outputSchema
in class EvalFunc<Integer>
- Parameters:
input
- Schema of the input
- Returns:
- Schema of the output
Copyright © ${year} The Apache Software Foundation