Examples of org.zkoss.xel.FunctionMapper.resolveFunction()

org.zkoss.xel.FunctionMapper.resolveFunction()
Resolves a function {@link Function} with the specified name andprefix.
Note: not all EL evaluator support {@link #resolveFunction}. Currently only JSP 2.0/2.1 EL-based expression factories support this method. You can check {@link ExpressionFactory#isSupported} for thissupport. @param prefix the prefix of the function, or "" if no prefix @param name the name of the function to resolve

*/
        return resolveVariable(resolver, (String)_value, ctx);
      }
    } else if (_type == TokenType.FUNCTION) {
      final FunctionMapper mapper = ctx.getFunctionMapper(); 
      final Function fn = mapper.resolveFunction("", (String)_value);
      if (fn == null) { //cannot find the specified function
        throw new SSErrorXelException(SSError.NAME);
      }
      Object[] args = new Object[getOperands().size()];
      int j = 0;

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      } else if (_subtype == TokenSubtype.VAR) { //refer to a variable
        sb.append(_value);
      }
    } else if (_type == TokenType.FUNCTION) {
      final FunctionMapper mapper = ctx.getFunctionMapper(); 
      final Function fn = mapper.resolveFunction("", (String)_value);
      if (fn == null) { //cannot find the specified function
        sb.append(SSError.NAME);
      } else {
        sb.append(_value).append("(");
        Collection opns = getOperands();

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   */
  public Function resolveFunction(String arg0, String arg1)
      throws XelException {
    for(final Iterator it=_mappers.iterator(); it.hasNext();) {
      final FunctionMapper mapper = (FunctionMapper) it.next();
      final Function fun = mapper.resolveFunction(arg0, arg1);
      if (fun != null) return fun;
    }
    return null;
  }

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        throws XelException {
      final Page page = getPage();
      if (page != null) {
        final FunctionMapper mapper = page.getFunctionMapper();
        if (mapper != null) {
          return mapper.resolveFunction(prefix, name);
        }
      }
      return null;
    }

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