Building Derby

[Craig L Russell <Cr...@Sun.COM>]

Hi,

I ran across an interesting issue while building Derby. I checked out  
the latest sources and ran ant from the top. I read the ant output  
and found this:

genParser:
      [echo]   Generating SQL parser...
      [java] Java Compiler Compiler Version 4.0 (Parser Generator)
      [java] (type "javacc" with no arguments for help)
      [java] Reading from file sqlgrammar.jj . . .
      [java] Note: UNICODE_INPUT option is specified. Please make  
sure you create the parser/lexer using a Reader with the correct  
character encoding.
      [java] Warning: ParseException.java: File is obsolete.  Please  
rename or delete this file so that a new one can be generated for you.
      [java] Warning: Token.java: File is obsolete.  Please rename or  
delete this file so that a new one can be generated for you.
      [java] Warning: CharStream.java: File is obsolete.  Please  
rename or delete this file so that a new one can be generated for you.
      [java] Parser generated with 0 errors and 3 warnings.

Thinking I had done something wrong, I followed instructions and  
removed the 3 obsolete files. Now I could not build any more. I got  
messages like this:

genParser:

compile:
     [javac] Compiling 149 source files to /Users/clr/derby/trunk/ 
classes
     [javac] /Users/clr/derby/trunk/java/engine/org/apache/derby/impl/ 
sql/compile/ParserImpl.java:141: cannot find symbol
     [javac] symbol  : method ReInit(java.io.Reader,int,int,int)
     [javac] location: interface  
org.apache.derby.impl.sql.compile.CharStream
     [javac]                     charStream.ReInit(sqlText, 1, 1,  
LARGE_TOKEN_SIZE);

Once I went back and restored the three files to their checked-in  
versions, everything worked again.

This indicates to me that the sources for these three files in  
sqlgrammar.jj are not in sync with the generated java files.

Was this intentional? Should we add a note in BUILDING.txt to explain  
what is going on?

Thanks,

Craig

Craig Russell
clr@apache.org http://db.apache.org/jdo

Re: Building Derby

[David Van Couvering <Da...@Sun.COM>]

These error messages are to be expected.  I agree BUILDING.txt should 
warn people to expect this, I agree it is disconcerting.

David

Craig L Russell wrote:
> Hi,
> 
> I ran across an interesting issue while building Derby. I checked out 
> the latest sources and ran ant from the top. I read the ant output and 
> found this:
> 
> genParser:
>      [echo]   Generating SQL parser...
>      [java] Java Compiler Compiler Version 4.0 (Parser Generator)
>      [java] (type "javacc" with no arguments for help)
>      [java] Reading from file sqlgrammar.jj . . .
>      [java] Note: UNICODE_INPUT option is specified. Please make sure 
> you create the parser/lexer using a Reader with the correct character 
> encoding.
>      [java] Warning: ParseException.java: File is obsolete.  Please 
> rename or delete this file so that a new one can be generated for you.
>      [java] Warning: Token.java: File is obsolete.  Please rename or 
> delete this file so that a new one can be generated for you.
>      [java] Warning: CharStream.java: File is obsolete.  Please rename 
> or delete this file so that a new one can be generated for you.
>      [java] Parser generated with 0 errors and 3 warnings.
> 
> Thinking I had done something wrong, I followed instructions and removed 
> the 3 obsolete files. Now I could not build any more. I got messages 
> like this:
> 
> genParser:
> 
> compile:
>     [javac] Compiling 149 source files to /Users/clr/derby/trunk/classes
>     [javac] 
> /Users/clr/derby/trunk/java/engine/org/apache/derby/impl/sql/compile/ParserImpl.java:141: 
> cannot find symbol
>     [javac] symbol  : method ReInit(java.io.Reader,int,int,int)
>     [javac] location: interface org.apache.derby.impl.sql.compile.CharStream
>     [javac]                     charStream.ReInit(sqlText, 1, 1, 
> LARGE_TOKEN_SIZE);
> 
> Once I went back and restored the three files to their checked-in 
> versions, everything worked again.
> 
> This indicates to me that the sources for these three files in 
> sqlgrammar.jj are not in sync with the generated java files. 
> 
> Was this intentional? Should we add a note in BUILDING.txt to explain 
> what is going on?
> 
> Thanks,
> 
> Craig
> 
> Craig Russell
> clr@apache.org http://db.apache.org/jdo
> 
>