validation-modules/cross-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;
    }
}