https://issues.apache.org/bugzilla/show_bug.cgi?id=48941
Summary: Make EL api and servlet container compatible with
other Unified EL implementations
Product: Tomcat 6
Version: 6.0.26
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P2
Component: Servlet & JSP API
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=25149)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=25149)
Patch which makes proposed modifications
Make EL api and servlet container compatible with other Unified EL
implementations
Currently tomcat instantiates EL ExpressionFactory
not by using standard ExpressionFactory.newInstance()
but by directly calling org.apache.el.ExpressionFactoryImpl()
constructor.
See
org.apache.jasper.runtime.JspApplicationContextImpl
for example.
This proposal is simple.
1. Modify bundled EL api to add newInstance method to
javax.el.ExpressionFactory which calls org.apache.el.ExpressionFactoryImpl()
constructor.
2. Replace all invocations of org.apache.el.ExpressionFactoryImpl() with
standard ExpressionFactory.newInstance() call.
This way if EL api is replaced, new version can be used without modification.
However, to fully remove dependency on org.apache.el changes need to be made to
org.apache.jasper.compiler.Validator which directly static method in ELSupport
class. This is much more complex matter which can be addressed later.
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