validate type as soon as each line of script is entered in grunt shell
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Key: PIG-1687
URL: https://issues.apache.org/jira/browse/PIG-1687
Project: Pig
Issue Type: Improvement
Affects Versions: 0.8.0
Reporter: Thejas M Nair
Fix For: 0.9.0
In interactive mode (grunt shell), the type validation should be done as soon
as a line of script is added .
For example -
{code}
grunt> l = load 'x' as (a : chararray, b : int);
-- no error when following statement is typed
grunt> f = foreach l generate a + b;
-- errors only when explain/describe/dump/store is called
grunt> describe f;
2010-10-21 15:46:09,137 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1039: In alias f, incompatible types in Add Operator left hand side:chararray
right hand side:int
Details at logfile: /Users/tejas/pig_comb/trunk/pig_1287700533547.log
{code}
Another example-
{code}
grunt> l = load 'x' as (a : chararray, b : int);
grunt> f = foreach l generate CONCAT(a,b);
grunt> describe f;
2010-10-21 15:46:51,477 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1045: Could not infer the matching function for org.apache.pig.builtin.CONCAT
as multiple or none of them fit. Please use an explicit cast.
{code}
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