evaluating bean expressions in custom language

[javamonkey79]

Is there a standard way to evaluate bean expressions\OGNL in custom
languages?

For example:

I have a custom language expression like this:

                                                        <language 
language="e4x">
                                                                
${someString}.indexOf('"'+message['PV1']['PV1.3']['PV1.3.1']+'"') !=
-1
                                                        </language>

And in my Expression code I have something like this:
                Matcher matcher = BEAN_PATTERN.matcher( _expressionString );
                while ( matcher.find() ) {
                        String beanName = matcher.group( 1 );

                        _logger.debug( "found bean with name: [{}]", beanName );

                        Object lookupByName = 
exchange.getContext().getRegistry().lookupByName(
beanName );
                        if ( lookupByName == null ) {
                                throw new ExpressionEvaluationException( this, 
"failed to lookup bean
with name: " + beanName, exchange,
                                        new IllegalArgumentException() );
                        }

                        expressionString = expressionString.replaceFirst( 
String.format(
"\\$\\{%s\\}", beanName ), lookupByName.toString() );
                }

But this seems very wrong, as there is probably code in Camel to do this
already. It is also fairly limited, as I am only able to do String
replacement rather than full on OGNL.




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