[rules-users] [MVEL]why compileExpression returns Serializable not ExecutableStatement and a few more other interface design?

[kapokfly]

Hi Mark, 

Few questions to confirm with you, or anyone else who are familiar with
MVEL's design?

1) What is the design intention to not returning ExecutableStatement when
trying to compile an expression? 

2) How the 'Safe' interface is being used? Why MVEL has both
ExecutableAccessorSafe and ExecutableAccessor? Which one should be used? 

3) What is the major differences between ASTNode.getReducedValueAccelerated
and getReducedValue? 

4) What is the major purpose of debugSymbols? (looks like it has to be used
with a source file specified?)

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Ivan, your Panda, forever
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