On 13/05/2013 14:35, Thomas Andraschko wrote:
Hi Christian,
i don't understand your solution exactly.
Whats the difference?
It would still store the #{cc.attrs.xxx} expression and #{cc} cant be
evaluated without #pushComponentToEL(cc).
Also #createView should be avoided for such a request IMO because of
performance.
I use the following dirty/kludgy code for such needs :
public static String getMappedValueExpression(ValueExpression
valueExpression) {
ContextAwareTagValueExpression ctxAware =
(ContextAwareTagValueExpression)valueExpression;
if(ctxAware != null) {
return
getMappedValueExpression((WrappedValueExpression)ctxAware.getWrapped());
}
return valueExpression.getExpressionString();
}
public static String
getMappedValueExpression(WrappedValueExpression wrappedExpression) {
String exprString =
wrappedExpression.getExpressionString().replace("#{", "").replace("}", "");
String ret = exprString;
try {
Field valueExpression =
WrappedValueExpression.class.getDeclaredField("valueExpression");
valueExpression.setAccessible(true);
ValueExpressionImpl vei = (ValueExpressionImpl)
valueExpression.get(wrappedExpression);
Field varMapper =
ValueExpressionImpl.class.getDeclaredField("varMapper");
varMapper.setAccessible(true);
VariableMapperImpl vmi = (VariableMapperImpl)
varMapper.get(vei);
if(vmi != null) {
String[] components = exprString.split("\\.");
components[0] =
vmi.resolveVariable(components[0]).getExpressionString().replace("#{",
"").replace("}", "");
ret = "";
for(int i = 0 ; i < components.length ; i++) {
if(i != 0) {
ret += ".";
}
ret += components[i];
}
}
} catch (Exception ex) {
logger.error("Exception lors du mapping de l'expression
EL " + exprString, ex);
} finally {
return ret;
}
}
I will gladly adopt a better solution but this one works for me. :-)
Regards,
Ludovic
|
| AVANT D'IMPRIMER, PENSEZ A L'ENVIRONNEMENT.
|
