/*
* Copyright 2004-2005 the original author or authors.
*
* Licensed 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 org.springmodules.validation.bean.rule.resolver;
import org.springmodules.validation.util.fel.Function;
import org.springmodules.validation.util.fel.FunctionExpressionParser;
/**
* Resolves error arguments based on valang expressions.
*
* @author Uri Boness
*/
public class FunctionErrorArgumentsResolver implements ErrorArgumentsResolver {
private Function[] functions;
public FunctionErrorArgumentsResolver(Function[] functions) {
this.functions = functions;
}
public FunctionErrorArgumentsResolver(String[] expressions, FunctionExpressionParser functionExpressionParser) {
this(parseFunctionExpressions(expressions, functionExpressionParser));
}
/**
* Returns the error arguments that are resolved by the configured valang expressions.
*
* @see org.springmodules.validation.bean.rule.resolver.ErrorArgumentsResolver#resolveArguments(Object)
*/
public Object[] resolveArguments(Object obj) {
Object[] args = new Object[functions.length];
for (int i=0; i<args.length; i++) {
args[i] = functions[i].evaluate(obj);
}
return args;
}
//=============================================== Helper Methods ===================================================
protected static Function[] parseFunctionExpressions(String[] expressions, FunctionExpressionParser parser) {
Function[] functions = new Function[expressions.length];
for (int i=0; i<expressions.length; i++) {
functions[i] = parser.parse(expressions[i]);
}
return functions;
}
}