experimental/trunk_client_side_validation/validation-modules/property-validation/src/main/java/org/apache/myfaces/extensions/validator/baseval/strategy/RegexStrategy.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.Regex;
import org.apache.myfaces.extensions.validator.core.annotation.AnnotationEntry;
import org.apache.myfaces.extensions.validator.core.validation.strategy.AbstractValidationStrategy;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.ValidatorException;
import java.lang.annotation.Annotation;
import java.util.regex.Pattern;

/**
 * @author Gerhard Petracek
 */
public class RegexStrategy extends AbstractValidationStrategy
{

    protected void processValidation(FacesContext facesContext,
            UIComponent uiComponent, AnnotationEntry annotationEntry,
            Object convertedObject) throws ValidatorException
    {

        Regex annotation = annotationEntry.getAnnotation(Regex.class);

        for (String expression : annotation.value())
        {
            if (convertedObject == null
                    || !Pattern.compile(expression).matcher(
                            convertedObject.toString()).matches())
            {
                throw new ValidatorException(new FacesMessage(
                        FacesMessage.SEVERITY_ERROR,
                        getErrorMessageSummary(annotation),
                        getErrorMessageDetails(annotation).replace("{0}",
                                expression)));
            }
        }
    }

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