com.opensymphony.xwork2.validator.annotations.ExpressionValidator Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package com.opensymphony.xwork2.validator.annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
*
* This non-field level validator validates a supplied regular expression.
*
*
* Annotation usage:
*
*
* The annotation must be applied at method level.
*
*
* Annotation parameters:
*
*
*
*
* Parameter
* Required
* Default
* Notes
*
*
* message
* yes
*
* field error message
*
*
* key
* no
*
* i18n key from language specific properties file.
*
*
* messageParams
* no
*
* Additional params to be used to customize message - will be evaluated against the Value Stack
*
*
* shortCircuit
* no
* false
* If this validator should be used as shortCircuit.
*
*
* expression
* yes
*
* An OGNL expression that returns a boolean value.
*
*
*
*
* Example code:
*
*
*
* @ExpressionValidator(message = "Default message", key = "i18n.key", shortCircuit = true, expression = "an OGNL expression" )
*
*
*
* @author Rainer Hermanns
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.METHOD})
public @interface ExpressionValidator {
/**
* @return The expressions to validate.
* An OGNL expression that returns a boolean value.
*/
String expression();
/**
* @return The default error message for this validator.
* NOTE: It is required to set a message, if you are not using the message key for 18n lookup!
*/
String message() default "";
/**
* @return The message key to lookup for i18n.
*/
String key() default "";
/**
* @return Additional params to be used to customize message - will be evaluated against the Value Stack
*/
String[] messageParams() default {};
/**
* If this is activated, the validator will be used as short-circuit.
*
* Adds the short-circuit="true" attribute value if true.
*
* @return true if validator will be used as short-circuit. Default is false.
*/
boolean shortCircuit() default false;
}