/* | |
* 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; | |
import org.apache.myfaces.extensions.validator.baseval.annotation.JoinValidation; | |
import org.apache.myfaces.extensions.validator.core.metadata.MetaDataEntry; | |
import org.apache.myfaces.extensions.validator.core.metadata.extractor.DefaultComponentMetaDataExtractor; | |
import org.apache.myfaces.extensions.validator.core.property.DefaultPropertyInformation; | |
import org.apache.myfaces.extensions.validator.core.property.PropertyDetails; | |
import org.apache.myfaces.extensions.validator.core.property.PropertyInformation; | |
import org.apache.myfaces.extensions.validator.core.property.PropertyInformationKeys; | |
import org.apache.myfaces.extensions.validator.core.storage.MetaDataStorageFilter; | |
import org.apache.myfaces.extensions.validator.util.ClassUtils; | |
import org.apache.myfaces.extensions.validator.util.ExtValUtils; | |
import org.apache.myfaces.extensions.validator.util.ProxyUtils; | |
import org.apache.myfaces.extensions.validator.internal.UsageInformation; | |
import org.apache.myfaces.extensions.validator.internal.UsageCategory; | |
import java.util.ArrayList; | |
import java.util.Collections; | |
import java.util.List; | |
/** | |
* EXTVAL-59 | |
* | |
* @author Gerhard Petracek | |
* @since x.x.3 | |
*/ | |
@UsageInformation(UsageCategory.INTERNAL) | |
public class JoinValidationMetaDataStorageFilter implements MetaDataStorageFilter | |
{ | |
private static final String STATIC_SEPARATOR = ":"; | |
public void filter(PropertyInformation propertyInformation) | |
{ | |
if (propertyInformation != null) | |
{ | |
List<MetaDataEntry> result = new ArrayList<MetaDataEntry>(); | |
resolveJoinValidationMetaData(propertyInformation, result); | |
propertyInformation.resetMetaDataEntries(); | |
setDefaultPropertyDetails(propertyInformation, result); | |
if (containsJoinValidationConstraint(result)) | |
{ | |
filter(propertyInformation); | |
} | |
} | |
} | |
private void resolveJoinValidationMetaData(PropertyInformation propertyInformation, List<MetaDataEntry> result) | |
{ | |
for (MetaDataEntry metaDataEntry : propertyInformation.getMetaDataEntries()) | |
{ | |
result.addAll(tryToTransformEntry(metaDataEntry)); | |
} | |
} | |
private void setDefaultPropertyDetails(PropertyInformation propertyInformation, List<MetaDataEntry> result) | |
{ | |
for (MetaDataEntry metaDataEntry : result) | |
{ | |
metaDataEntry.setProperty(PropertyInformationKeys.PROPERTY_DETAILS, | |
propertyInformation.getInformation(PropertyInformationKeys.PROPERTY_DETAILS)); | |
propertyInformation.addMetaDataEntry(metaDataEntry); | |
} | |
} | |
private boolean containsJoinValidationConstraint(List<MetaDataEntry> result) | |
{ | |
for (MetaDataEntry entry : result) | |
{ | |
if (entry.getValue() instanceof JoinValidation) | |
{ | |
return true; | |
} | |
} | |
return false; | |
} | |
private List<MetaDataEntry> tryToTransformEntry(MetaDataEntry metaDataEntry) | |
{ | |
List<MetaDataEntry> result = new ArrayList<MetaDataEntry>(); | |
if (metaDataEntry.getValue() instanceof JoinValidation) | |
{ | |
JoinValidation annotation = metaDataEntry.getValue(JoinValidation.class); | |
replaceMetaData(annotation, metaDataEntry, result); | |
} | |
else | |
{ | |
result.add(metaDataEntry); | |
} | |
return result; | |
} | |
private void replaceMetaData(JoinValidation annotation, MetaDataEntry metaDataEntry, List<MetaDataEntry> result) | |
{ | |
for (String target : annotation.value()) | |
{ | |
tryToReplaceMetaDataOfTarget(target, metaDataEntry, result); | |
} | |
} | |
private void tryToReplaceMetaDataOfTarget(String target, MetaDataEntry metaDataEntry, List<MetaDataEntry> result) | |
{ | |
try | |
{ | |
if (isStaticSyntax(target)) | |
{ | |
addMetaData(result, extractStaticMetaData(target)); | |
} | |
else | |
{ | |
addMetaData(result, extractDynamicMetaData(metaDataEntry, target)); | |
} | |
} | |
catch (Throwable t) | |
{ | |
//do nothing a different filter might introduce a new syntax which causes the exception | |
} | |
} | |
private void addMetaData(List<MetaDataEntry> result, MetaDataEntry[] metaDataEntries) | |
{ | |
Collections.addAll(result, metaDataEntries); | |
} | |
private boolean isStaticSyntax(String target) | |
{ | |
return target.contains(STATIC_SEPARATOR); | |
} | |
private MetaDataEntry[] extractStaticMetaData(String target) | |
{ | |
int separatorIndex = target.lastIndexOf(STATIC_SEPARATOR); | |
Class targetClass = loadClass(target.substring(0, separatorIndex)); | |
String propertyName = target.substring(separatorIndex + 1); | |
return new StaticSyntaxMetaDataExtractor().extract(targetClass, propertyName).getMetaDataEntries(); | |
} | |
private Class loadClass(String className) | |
{ | |
try | |
{ | |
return ClassUtils.loadClassForName(className); | |
} | |
catch (ClassNotFoundException e) | |
{ | |
throw new IllegalArgumentException(e); | |
} | |
} | |
private MetaDataEntry[] extractDynamicMetaData(MetaDataEntry metaDataEntry, String target) | |
{ | |
PropertyDetails propertyDetails = ExtValUtils.createPropertyDetailsForNewTarget(metaDataEntry, target); | |
Class targetClass = ProxyUtils.getUnproxiedClass(propertyDetails.getBaseObject().getClass()); | |
return new StaticSyntaxMetaDataExtractor().extract( | |
targetClass, propertyDetails.getProperty()).getMetaDataEntries(); | |
} | |
private class StaticSyntaxMetaDataExtractor extends DefaultComponentMetaDataExtractor | |
{ | |
public PropertyInformation extract(Class targetClass, String targetProperty) | |
{ | |
PropertyInformation propertyInformation = new DefaultPropertyInformation(); | |
addPropertyAccessAnnotations(targetClass, targetProperty, propertyInformation); | |
addFieldAccessAnnotations(targetClass, targetProperty, propertyInformation); | |
return propertyInformation; | |
} | |
} | |
@Override | |
public boolean equals(Object obj) | |
{ | |
return obj != null && getClass().equals(obj.getClass()); | |
} | |
@Override | |
public int hashCode() | |
{ | |
return super.hashCode(); | |
} | |
} |