/* Copyright 2005-2006 Tim Fennell
*
* 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 net.sourceforge.stripes.tag;
import java.util.List;
import net.sourceforge.stripes.action.ActionBean;
import net.sourceforge.stripes.action.ActionBeanContext;
import net.sourceforge.stripes.validation.ValidationError;
import net.sourceforge.stripes.validation.ValidationErrors;
/**
* A collection of static functions that are included in the Stripes tag library. In most
* cases these are not functions that are specific to Stripes, but simply functions that
* make doing web development (especially with Java 5 constructs) easier.
*
* @author Tim Fennell
* @since Stripes 1.1
*/
public class ElFunctions {
/** Gets the name of the supplied enumerated value. */
public static String name(Enum<?> e) {
return e.name();
}
/** Indicates if validation errors exist for the given field of the given {@link ActionBean}. */
public static boolean hasErrors(ActionBean actionBean, String field) {
if (actionBean == null || field == null)
return false;
ActionBeanContext context = actionBean.getContext();
if (context == null)
return false;
ValidationErrors errors = context.getValidationErrors();
if (errors == null || errors.isEmpty())
return false;
List<ValidationError> fieldErrors = errors.get(field);
return fieldErrors != null && fieldErrors.size() > 0;
}
}