https://bz.apache.org/bugzilla/show_bug.cgi?id=58327
Bug ID: 58327
Summary: ValueExpressionLiteral should cache the string value
Product: Tomcat 8
Version: 8.0.26
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: EL
Assignee: dev@tomcat.apache.org
Reporter: andreas.k...@gmail.com
Created attachment 33061
--> https://bz.apache.org/bugzilla/attachment.cgi?id=33061&action=edit
Proposed patch
ValueExpressionLiteral invokes #getExpressionString() twice for many methods to
notify the context.
Calculating the string value can be expensive, for example in my case my values
are rather "big" JSON wrapper objects. For a literal value this string value
should be cacheable - the thing is read-only and a literal value, after all.
Attached a proposed patch to implement that - but I'm not sure whether there
might be specific tests to run or spec issues preventing this.
For the time being I worked around the issue in our own code by using a
different ValueExpression that has this caching behavior.
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