https://issues.apache.org/bugzilla/show_bug.cgi?id=45511
Summary: EL "empty" keyword does not work
Product: Tomcat 6
Version: unspecified
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: major
Priority: P2
Component: Jasper
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
When using ${empty(xxx)}, EL parser thinks it is an unknown function :empty and
throws ClassCastException:
java.lang.ClassCastException: java.lang.NullPointerException
at
org.apache.el.lang.ExpressionBuilder.prepare(ExpressionBuilder.java:135)
at
org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:147)
at
org.apache.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:190)
at
org.apache.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:68)
at
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:924)
I think it is because of some changes in ELParser.java....
with best regards
Grzegorz Grzybek
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