experimental/trunk_client_side_validation/validation-modules/property-validation/src/main/java/org/apache/myfaces/extensions/validator/baseval/strategy/RequiredStrategy.java

/*
 * 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 org.apache.myfaces.extensions.validator.baseval.strategy;

import org.apache.myfaces.extensions.validator.baseval.annotation.Required;
import org.apache.myfaces.extensions.validator.core.annotation.AnnotationEntry;
import org.apache.myfaces.extensions.validator.core.validation.strategy.AbstractValidationStrategy;
import org.apache.myfaces.extensions.validator.core.validation.strategy.ClientSideValidationStrategy;
import org.apache.myfaces.extensions.validator.util.ClientSideValidationUtils;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.ValidatorException;
import java.lang.annotation.Annotation;
import java.util.List;
import java.util.ArrayList;

/**
 * @author Gerhard Petracek
 */
public class RequiredStrategy extends AbstractValidationStrategy implements ClientSideValidationStrategy
{
    //TODO
    public List<String> extractMetaData(Annotation annotation)
    {
        List<String> metaData = new ArrayList<String>();
        //annotation.annotationType().get
        metaData.add(ClientSideValidationUtils
            .generateSimpleKeyValuePair("validationErrorMsgKey", ((Required)annotation).validationErrorMsgKey()));
        return metaData;
    }

    public void processValidation(FacesContext facesContext,
            UIComponent uiComponent, AnnotationEntry annotationEntry,
            Object convertedObject) throws ValidatorException
    {
        if (convertedObject == null || convertedObject.equals(""))
        {
            throw new ValidatorException(
                    getValidationErrorFacesMassage(annotationEntry
                            .getAnnotation()));
        }
    }

    protected String getValidationErrorMsgKey(Annotation annotation)
    {
        return ((Required) annotation).validationErrorMsgKey();
    }
}