experimental/trunk_client_side_validation/validation-modules/property-validation/src/main/java/org/apache/myfaces/extensions/validator/crossval/CrossValidationPhaseListener.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.crossval;

import org.apache.myfaces.extensions.validator.util.CrossValidationUtils;
import org.apache.myfaces.extensions.validator.util.ExtValUtils;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;
import javax.faces.validator.ValidatorException;
import java.util.MissingResourceException;

/**
 * @author Gerhard Petracek
 */
public class CrossValidationPhaseListener implements PhaseListener
{
    private boolean isInitialized = false;

    public void afterPhase(PhaseEvent event)
    {

        try
        {
            CrossValidationStorage crossValidationStorage = CrossValidationUtils
                    .getOrInitCrossValidationStorage();
            for (CrossValidationStorageEntry entry : crossValidationStorage
                    .getCrossValidationStorageEntries())
            {
                try
                {
                    entry.getValidationStrategy().processCrossValidation(entry,
                            crossValidationStorage);
                }
                catch (ValidatorException e)
                {

                    FacesMessage facesMessage = e.getFacesMessage();

                    if (facesMessage != null
                            && facesMessage.getSummary() != null
                            && facesMessage.getDetail() != null)
                    {
                        UIComponent component = entry.getComponent();
                        String clientId = null;

                        //TODO
                        if (component != null)
                        {
                            clientId = component.getClientId(event
                                    .getFacesContext());
                        }

                        event.getFacesContext().addMessage(clientId,
                                facesMessage);
                    }

                    event.getFacesContext().renderResponse();
                }
                catch (MissingResourceException e)
                {
                    event.getFacesContext().addMessage(
                            null,
                            new FacesMessage(FacesMessage.SEVERITY_ERROR,
                                    "custom validation message not found", e
                                            .toString()));
                    event.getFacesContext().renderResponse();
                    throw e;
                }
            }
        }
        finally
        {
            CrossValidationUtils.resetCrossValidationStorage();
        }
    }

    public void beforePhase(PhaseEvent event)
    {
        if (!isInitialized)
        {
            if (WebXmlParameter.DEACTIVATE_CROSSVALIDATION != null
                    && WebXmlParameter.DEACTIVATE_CROSSVALIDATION
                            .equalsIgnoreCase("true"))
            {
                ExtValUtils.deregisterPhaseListener(this);
            }
            else
            {
                isInitialized = true;
            }
        }
    }

    public PhaseId getPhaseId()
    {
        return PhaseId.ANY_PHASE;
    }
}