    001// Copyright 2008, 2012 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.validator;
    016
    017import org.apache.tapestry5.Validator;
    018import org.apache.tapestry5.services.javascript.JavaScriptSupport;
    019
    020/**
    021 * Base class for constructing a {@link org.apache.tapestry5.Validator}.
    022 */
    023public abstract class AbstractValidator<C, T> implements Validator<C, T>
    024{
    025    private final Class<C> constraintType;
    026
    027    private final Class<T> valueType;
    028
    029    private final String messageKey;
    030
    031    protected final JavaScriptSupport javaScriptSupport;
    032
    033    protected AbstractValidator(Class<C> constraintType, Class<T> valueType, String messageKey, JavaScriptSupport javaScriptSupport)
    034    {
    035        this.constraintType = constraintType;
    036        this.valueType = valueType;
    037        this.messageKey = messageKey;
    038        this.javaScriptSupport = javaScriptSupport;
    039    }
    040
    041    public final Class<C> getConstraintType()
    042    {
    043        return constraintType;
    044    }
    045
    046    public final Class<T> getValueType()
    047    {
    048        return valueType;
    049    }
    050
    051    public final String getMessageKey()
    052    {
    053        return messageKey;
    054    }
    055
    056    /**
    057     * Return false, which is correct for the vast majority of validators. {@link org.apache.tapestry5.validator.Required}
    058     * overrides this to true.F
    059     */
    060    public boolean isRequired()
    061    {
    062        return false;
    063    }
    064}