/*
* 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.strategy;
import org.apache.myfaces.extensions.validator.core.el.ELHelper;
import org.apache.myfaces.extensions.validator.crossval.storage.CrossValidationStorageEntry;
import org.apache.myfaces.extensions.validator.crossval.storage.CrossValidationStorage;
import org.apache.myfaces.extensions.validator.crossval.storage.ProcessedInformationStorage;
import org.apache.myfaces.extensions.validator.crossval.storage.ProcessedInformationStorageEntry;
import org.apache.myfaces.extensions.validator.util.ExtValUtils;
import org.apache.myfaces.extensions.validator.util.CrossValidationUtils;
import org.apache.myfaces.extensions.validator.internal.ToDo;
import org.apache.myfaces.extensions.validator.internal.Priority;
import org.apache.myfaces.extensions.validator.internal.UsageInformation;
import org.apache.myfaces.extensions.validator.internal.UsageCategory;
import org.apache.myfaces.extensions.validator.core.el.ValueBindingExpression;
import javax.faces.context.FacesContext;
import java.util.logging.Logger;
/**
* referencing validation targets - possible formats:
* "#{[bean_name].[property_name]}" ... cross-entity validation with value binding
*
* @author Gerhard Petracek
* @since 1.x.1
*/
@UsageInformation(UsageCategory.INTERNAL)
class ELCompareStrategy implements ReferencingStrategy
{
private final Logger logger = Logger.getLogger(getClass().getName());
public boolean evaluateReferenceAndValidate(
CrossValidationStorageEntry crossValidationStorageEntry,
CrossValidationStorage crossValidationStorage,
String validationTarget, AbstractCompareStrategy compareStrategy)
{
ELHelper elHelper = ExtValUtils.getELHelper();
if (elHelper.isELTermWellFormed(validationTarget) &&
elHelper.isELTermValid(FacesContext.getCurrentInstance(), validationTarget))
{
tryToValidateValueBinding(
crossValidationStorageEntry,
new ValueBindingExpression(validationTarget), crossValidationStorage, compareStrategy);
return true;
}
return false;
}
@ToDo(value = Priority.MEDIUM, description = "test")
protected boolean tryToValidateValueBinding(
CrossValidationStorageEntry crossValidationStorageEntry,
ValueBindingExpression validationTarget,
CrossValidationStorage crossValidationStorage,
AbstractCompareStrategy compareStrategy)
{
ProcessedInformationStorageEntry validationTargetEntry =
resolveTargetForCrossComponentValidation(crossValidationStorageEntry, validationTarget);
if(validationTargetEntry != null)
{
processCrossComponentValidation(compareStrategy, crossValidationStorageEntry, validationTargetEntry);
}
else
{
processModelAwareCrossValidation(compareStrategy, crossValidationStorageEntry, validationTarget);
}
return true;
}
private ProcessedInformationStorageEntry resolveTargetForCrossComponentValidation(
CrossValidationStorageEntry crossValidationStorageEntry,
ValueBindingExpression validationTarget)
{
ProcessedInformationStorage processedInformationStorage =
CrossValidationUtils.getOrInitProcessedInformationStorage();
return CrossValidationUtils.resolveValidationTargetEntry(
processedInformationStorage,
CrossValidationUtils.convertValueBindingExpressionToProcessedInformationKey(validationTarget),
crossValidationStorageEntry);
}
private void processCrossComponentValidation(
AbstractCompareStrategy compareStrategy,
CrossValidationStorageEntry crossValidationStorageEntry,
ProcessedInformationStorageEntry validationTargetEntry)
{
CrossValidationHelper
.crossValidateCompareStrategy(
compareStrategy, crossValidationStorageEntry, validationTargetEntry, false);
}
private void processModelAwareCrossValidation(
AbstractCompareStrategy compareStrategy,
CrossValidationStorageEntry crossValidationStorageEntry,
ValueBindingExpression validationTarget)
{
FacesContext facesContext = FacesContext.getCurrentInstance();
Object targetValue = ExtValUtils.getELHelper().getValueOfExpression(facesContext, validationTarget);
ProcessedInformationStorageEntry targetEntry = new ProcessedInformationStorageEntry();
targetEntry.setBean(
ExtValUtils.getELHelper().getValueOfExpression(facesContext, validationTarget.getBaseExpression()));
targetEntry.setConvertedValue(targetValue);
CrossValidationHelper
.crossValidateCompareStrategy(compareStrategy, crossValidationStorageEntry, targetEntry, true);
}
}