How to use

get

method

in

org.jboss.el.util.MessageFactory

  public ValueExpression createValueExpression(Object instance,
      Class expectedType) {
    if (expectedType == null) {
      throw new NullPointerException(MessageFactory
          .get("error.value.expectedType"));
    }
    return new ValueExpressionLiteral(instance, expectedType);
  }
}

public void setValue(Object base, EvaluationContext ctx, Object value)
    throws ELException {
  throw new PropertyNotWritableException(MessageFactory
      .get("error.syntax.set"));
}

public void setValue(Object base, EvaluationContext ctx, Object value)
    throws ELException {
  throw new PropertyNotWritableException(MessageFactory
      .get("error.syntax.set"));
}

public final static void throwUnhandled(Object base, Object property)
    throws ELException {
  if (base == null) {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.resolver.unhandled.null", property));
  } else {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.resolver.unhandled", base.getClass(), property));
  }
}

  public ValueExpression createValueExpression(Object instance,
      Class expectedType) {
    if (expectedType == null) {
      throw new NullPointerException(MessageFactory
          .get("error.value.expectedType"));
    }
    return new ValueExpressionLiteral(instance, expectedType);
  }
}

public final static void throwUnhandled(Object base, Object property)
    throws ELException {
  if (base == null) {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.resolver.unhandled.null", property));
  } else {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.resolver.unhandled", base.getClass(), property));
  }
}

  public ValueExpression createValueExpression(Object instance,
      Class expectedType) {
    if (expectedType == null) {
      throw new NullPointerException(MessageFactory
          .get("error.value.expectedType"));
    }
    return new ValueExpressionLiteral(instance, expectedType);
  }
}

public void setValue(Object base, EvaluationContext ctx, Object value)
    throws ELException {
  throw new PropertyNotWritableException(MessageFactory
      .get("error.syntax.set"));
}

public final static void throwUnhandled(Object base, Object property)
    throws ELException {
  if (base == null) {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.resolver.unhandled.null", property));
  } else {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.resolver.unhandled", base.getClass(), property));
  }
}

public void setValue(EvaluationContext ctx, Object value)
    throws ELException {
  throw new PropertyNotWritableException(MessageFactory.get("error.syntax.set"));
}

public void setValue(ELContext context, Object value) {
  throw new PropertyNotWritableException(MessageFactory.get(
      "error.value.literal.write", this.value));
}

public void setValue(EvaluationContext ctx, Object value)
    throws ELException {
  throw new PropertyNotWritableException(MessageFactory.get("error.syntax.set"));
}

public MethodExpression createMethodExpression(ELContext context,
    String expression, Class expectedReturnType,
    Class[] expectedParamTypes) {
  if (expectedParamTypes == null) {
    throw new NullPointerException(MessageFactory
        .get("error.method.nullParms"));
  }
  ExpressionBuilder builder = new ExpressionBuilder(expression, context);
  return builder.createMethodExpression(expectedReturnType,
      expectedParamTypes);
}

public ValueExpression createValueExpression(ELContext context,
    String expression, Class expectedType) {
  if (expectedType == null) {
    throw new NullPointerException(MessageFactory
        .get("error.value.expectedType"));
  }
  ExpressionBuilder builder = new ExpressionBuilder(expression, context);
  return builder.createValueExpression(expectedType);
}

public ValueExpression createValueExpression(ELContext context,
    String expression, Class expectedType) {
  if (expectedType == null) {
    throw new NullPointerException(MessageFactory
        .get("error.value.expectedType"));
  }
  ExpressionBuilder builder = new ExpressionBuilder(expression, context);
  return builder.createValueExpression(expectedType);
}

public MethodExpression createMethodExpression(ELContext context,
    String expression, Class<?> expectedReturnType,
    Class<?>[] expectedParamTypes) {
  if (expectedParamTypes == null) {
    throw new NullPointerException(MessageFactory
        .get("error.method.nullParms"));
  }
  ExpressionBuilder builder = new ExpressionBuilder(expression, context);
  return builder.createMethodExpression(expectedReturnType,
      expectedParamTypes);
}

public MethodExpression createMethodExpression(ELContext context,
    String expression, Class expectedReturnType,
    Class[] expectedParamTypes) {
  if (expectedParamTypes == null) {
    throw new NullPointerException(MessageFactory
        .get("error.method.nullParms"));
  }
  ExpressionBuilder builder = new ExpressionBuilder(expression, context);
  return builder.createMethodExpression(expectedReturnType,
      expectedParamTypes);
}

public ValueExpression createValueExpression(ELContext context,
    String expression, Class expectedType) {
  if (expectedType == null) {
    throw new NullPointerException(MessageFactory
        .get("error.value.expectedType"));
  }
  ExpressionBuilder builder = new ExpressionBuilder(expression, context);
  return builder.createValueExpression(expectedType);
}

public Object getTarget(Object base, EvaluationContext ctx)
    throws ELException {
  if (base == null) return null;
  ELResolver resolver = ctx.getELResolver();
  ctx.setPropertyResolved(false);
  Object r = resolver.getValue(ctx, base, this.image);
  if (r == null) {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.unreachable.property", base.getClass().getName(),
        this.image));
  }
  return r;
}

public Object getTarget(Object base, EvaluationContext ctx) throws ELException {
  if (base == null) return null;
  
  ELResolver resolver = ctx.getELResolver();
  ctx.setPropertyResolved(false);
  Object p = this.getValue(ctx);
  Object r = resolver.getValue(ctx, base, p);
  if (r == null) {
    throw new PropertyNotFoundException(MessageFactory.get(
        "error.unreachable.property", base.getClass().getName(),
        p));
  }
  return r;
}