the error is as below:

generate-parsers:
[javacc] Java Compiler Compiler Version 2.0 (Parser Generator)
[javacc] Copyright (c) 1996-2000 Sun Microsystems, Inc.
[javacc] Copyright (c) 1997-2000 Metamata, Inc.
[javacc] (type "javacc" with no arguments for help)
[javacc] Reading from file G:\JBossStudy\jboss-3.2.6-src\server\output\parsers\org\jboss\ejb\plugins\cmp\ejbql\JBossQLParser.jj . . .
[javacc] COM.sun.labs.javacc.ParseException: Encountered "{" at line 273, column 31.
[javacc] Was expecting:
[javacc] ")" ...
[javacc]
[javacc] Detected 1 errors and 0 warnings.

BUILD FAILED

G:\JBossStudy\jboss-3.2.6-src\server\build.xml:225: E:\j2sdk1.4.2_01\jre\bin\java.exe failed with return code 1
at org.apache.tools.ant.taskdefs.Execute.runCommand(Execute.java:647)
at org.apache.tools.ant.taskdefs.optional.javacc.JavaCC.execute(JavaCC.java:322)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.jboss.tools.buildmagic.task.CallTarget.execute(CallTarget.java:141)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.jboss.tools.buildmagic.task.Ant.execute(Ant.java:261)
at org.jboss.tools.buildmagic.task.module.ExecuteModules$1.run(ExecuteModules.java:361)
at org.jboss.tools.buildmagic.task.module.ExecuteModules.executeModule(ExecuteModules.java:376)
at org.jboss.tools.buildmagic.task.module.ExecuteModules.execute(ExecuteModules.java:241)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
at org.apache.tools.ant.Main.runBuild(Main.java:673)
at org.apache.tools.ant.Main.startAnt(Main.java:188)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)