package org.jtheque.ui.constraints; import java.util.Collection; /* * Copyright JTheque (Baptiste Wicht) * * 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. */ /** * A constraint on an entity property. * * @author Baptiste Wicht */ public interface Constraint { /** * Return the max length of the value. If the constraint doesn't need to control length, this method * return a number with non-sense. * * @return The max length of the value. */ int getMaxLength(); /** * Indicate if we must control length or not. * * @return true if we must control length else false. */ boolean isLengthControlled(); /** * Validate the field. * * @param field The field to validate. * @param errors The errors list. */ void validate(Object field, Collection<org.jtheque.errors.Error> errors); /** * Configure the given component. The implementation must not assume the type of component passed as argument. * * @param component The component to configure. */ void configure(Object component); }