[PIG-583] Bag constants used in non foreach statements cause lexical errors

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 0.2.0
• Component/s: grunt
• Assignee: Xuefu Zhang
• Reporter: Santhosh Muthur Srinivasan
• Created: 29/Dec/08 22:13
• Updated: 05/Oct/11 00:15

Description

Use of bag constants in non-foreach statement cause lexical errors in Pig. The root cause is the inability of grunt to distinguish between nested block and bag constant in non-foreach statements.

grunt> a = load 'input'; 
grunt> b = filter a by ($0 eq {(1)});

2008-12-29 14:12:15,306 [main] ERROR org.apache.pig.tools.grunt.GruntParser - java.io.IOException: Encountered " <FILTEROP> "eq "" at line 1, column 21.
Was expecting one of:
    "*" ...
    ")" ...
    "." ...
    "+" ...
    "-" ...
    "/" ...
    "%" ...
    "#" ...
...
org.apache.pig.tools.pigscript.parser.TokenMgrError: Lexical error at line 2, column 29.  Encountered: ")" (41), after : ""
        at org.apache.pig.tools.pigscript.parser.PigScriptParserTokenManager.getNextToken(PigScriptParserTokenManager.java:2608)
        at org.apache.pig.tools.pigscript.parser.PigScriptParser.jj_ntk(PigScriptParser.java:658)
        at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:84)
        at org.apache.pig.tools.grunt.GruntParser.parseContOnError(GruntParser.java:94)
        at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:58)
        at org.apache.pig.Main.main(Main.java:282)

Issue Links

• depends upon: PIG-1618 Switch to new parser generator technology