private void addWithMiddleTable()
{
log.Debug("Adding audit mapping for property {0}. {1}" +
": collection with a join table.", _referencingEntityName, _propertyName);
// Generating the name of the middle table
string auditMiddleTableName;
string auditMiddleEntityName;
if (!string.IsNullOrEmpty(_propertyAuditingData.JoinTable.TableName))
{
auditMiddleTableName = _propertyAuditingData.JoinTable.TableName;
auditMiddleEntityName = _propertyAuditingData.JoinTable.TableName;
}
else
{
// We check how Hibernate maps the collection.
if (_propertyValue.Element is OneToMany && !_propertyValue.IsInverse)
{
// This must be a @JoinColumn+@OneToMany mapping. Generating the table name, as Hibernate doesn't use a
// middle table for mapping this relation.
var referencingPersistentClass = _mainGenerator.Cfg.GetClassMapping(_referencingEntityName);
var referencedPersistentClass = _mainGenerator.Cfg.GetClassMapping(_referencedEntityName);
auditMiddleTableName = _mainGenerator.VerEntCfg.UnidirectionOneToManyTableName(referencingPersistentClass, referencedPersistentClass);
auditMiddleEntityName = _mainGenerator.VerEntCfg.GetAuditEntityName(_referencingEntityName, _referencedEntityName);
}
else
{
auditMiddleTableName = _mainGenerator.VerEntCfg.CollectionTableName(_propertyValue);
auditMiddleEntityName = _mainGenerator.VerEntCfg.GetAuditEntityName(_propertyValue.CollectionTable.Name);
}
}
log.Debug("Using join table name: {0}", auditMiddleTableName);
// Generating the XML mapping for the middle entity, only if the relation isn't inverse.
// If the relation is inverse, will be later checked by comparing middleEntityXml with null.
XElement middleEntityXml;
if (!_propertyValue.IsInverse)
{
// Generating a unique middle entity name
auditMiddleEntityName = _mainGenerator.AuditEntityNameRegister.CreateUnique(auditMiddleEntityName);
// Registering the generated name
_mainGenerator.AuditEntityNameRegister.Register(auditMiddleEntityName);
middleEntityXml = createMiddleEntityXml(auditMiddleTableName, auditMiddleEntityName, _propertyValue.Where);
}
else
{
middleEntityXml = null;
}
// ******
// Generating the mapping for the referencing entity (it must be an entity).
// ******
// Getting the id-mapping data of the referencing entity (the entity that "owns" this collection).
var referencingIdMapping = _referencingEntityConfiguration.IdMappingData;
// Only valid for an inverse relation; null otherwise.
string mappedBy;
// The referencing prefix is always for a related entity. So it has always the "_" at the end added.
string referencingPrefixRelated;
string referencedPrefix;
if (_propertyValue.IsInverse)
{
// If the relation is inverse, then referencedEntityName is not null.
mappedBy = getMappedBy(_propertyValue.CollectionTable, _mainGenerator.Cfg.GetClassMapping(_referencedEntityName));
referencingPrefixRelated = mappedBy + "_";
referencedPrefix = StringTools.GetLastComponent(_referencedEntityName);
}
else
{
mappedBy = null;
referencingPrefixRelated = StringTools.GetLastComponent(_referencingEntityName) + "_";
referencedPrefix = _referencedEntityName == null ? "element" : _propertyName;
}
// Storing the id data of the referencing entity: original mapper, prefixed mapper and entity name.
var referencingIdData = createMiddleIdData(referencingIdMapping, referencingPrefixRelated, _referencingEntityName);
// Creating a query generator builder, to which additional id data will be added, in case this collection
// references some entities (either from the element or index). At the end, this will be used to build
// a query generator to read the raw data collection from the middle table.
var queryGeneratorBuilder = new QueryGeneratorBuilder(_mainGenerator.VerEntCfg, _mainGenerator.GlobalCfg.AuditStrategy, referencingIdData, auditMiddleEntityName, isEmbeddableElementType());
// Adding the XML mapping for the referencing entity, if the relation isn't inverse.
if (middleEntityXml != null)
{
// Adding related-entity (in this case: the referencing's entity id) id mapping to the xml.
addRelatedToXmlMapping(middleEntityXml, referencingPrefixRelated,
MetadataTools.GetColumnNameEnumerator(_propertyValue.Key.ColumnIterator),
referencingIdMapping);
}
// ******
// Generating the element mapping.
// ******
var elementComponentData = addValueToMiddleTable(_propertyValue.Element, middleEntityXml,
queryGeneratorBuilder, referencedPrefix, _propertyAuditingData.JoinTable.InverseJoinColumns);
// ******
// Generating the index mapping, if an index exists.
// ******
var indexComponentData = addIndex(middleEntityXml, queryGeneratorBuilder);
// ******
// Generating the property mapper.
// ******
// Building the query generator.
var queryGenerator = queryGeneratorBuilder.Build(new Collection <MiddleComponentData> {
elementComponentData, indexComponentData
});
// Creating common data
var commonCollectionMapperData = new CommonCollectionMapperData(
_mainGenerator.VerEntCfg, auditMiddleEntityName,
_propertyAuditingData.GetPropertyData(),
referencingIdData, queryGenerator);
// Checking the type of the collection and adding an appropriate mapper.
addMapper(commonCollectionMapperData, elementComponentData, indexComponentData);
// ******
// Storing information about this relation.
// ******
storeMiddleEntityRelationInformation(mappedBy);
}
private void AddWithMiddleTable()
{
log.Debug("Adding audit mapping for property " + referencingEntityName + "." + propertyName +
": collection with a join table.");
// Generating the name of the middle table
String auditMiddleTableName;
String auditMiddleEntityName;
if (!String.IsNullOrEmpty(propertyAuditingData.JoinTable.Name))
{
auditMiddleTableName = propertyAuditingData.JoinTable.Name;
auditMiddleEntityName = propertyAuditingData.JoinTable.Name;
}
else
{
String middleTableName = GetMiddleTableName(propertyValue, referencingEntityName);
auditMiddleTableName = mainGenerator.VerEntCfg.GetAuditTableName(null, middleTableName);
auditMiddleEntityName = mainGenerator.VerEntCfg.GetAuditEntityName(middleTableName);
}
log.Debug("Using join table name: " + auditMiddleTableName);
// Generating the XML mapping for the middle entity, only if the relation isn't inverse.
// If the relation is inverse, will be later checked by comparing middleEntityXml with null.
XmlElement middleEntityXml;
if (!propertyValue.IsInverse)
{
// Generating a unique middle entity name
auditMiddleEntityName = mainGenerator.AuditEntityNameRegister.createUnique(auditMiddleEntityName);
// Registering the generated name
mainGenerator.AuditEntityNameRegister.register(auditMiddleEntityName);
middleEntityXml = CreateMiddleEntityXml(auditMiddleTableName, auditMiddleEntityName, propertyValue.Where);
}
else
{
middleEntityXml = null;
}
// ******
// Generating the mapping for the referencing entity (it must be an entity).
// ******
// Getting the id-mapping data of the referencing entity (the entity that "owns" this collection).
IdMappingData referencingIdMapping = referencingEntityConfiguration.IdMappingData;
// Only valid for an inverse relation; null otherwise.
String mappedBy;
// The referencing prefix is always for a related entity. So it has always the "_" at the end added.
String referencingPrefixRelated;
String referencedPrefix;
if (propertyValue.IsInverse)
{
// If the relation is inverse, then referencedEntityName is not null.
mappedBy = GetMappedBy(propertyValue.CollectionTable, mainGenerator.Cfg.GetClassMapping(referencedEntityName));
referencingPrefixRelated = mappedBy + "_";
referencedPrefix = StringTools.GetLastComponent(referencedEntityName);
}
else
{
mappedBy = null;
referencingPrefixRelated = StringTools.GetLastComponent(referencingEntityName) + "_";
referencedPrefix = referencedEntityName == null ? "element" : propertyName;
}
// Storing the id data of the referencing entity: original mapper, prefixed mapper and entity name.
MiddleIdData referencingIdData = CreateMiddleIdData(referencingIdMapping,
referencingPrefixRelated, referencingEntityName);
// Creating a query generator builder, to which additional id data will be added, in case this collection
// references some entities (either from the element or index). At the end, this will be used to build
// a query generator to read the raw data collection from the middle table.
QueryGeneratorBuilder queryGeneratorBuilder = new QueryGeneratorBuilder(mainGenerator.GlobalCfg,
mainGenerator.VerEntCfg, referencingIdData, auditMiddleEntityName);
// Adding the XML mapping for the referencing entity, if the relation isn't inverse.
if (middleEntityXml != null)
{
// Adding related-entity (in this case: the referencing's entity id) id mapping to the xml.
AddRelatedToXmlMapping(middleEntityXml, referencingPrefixRelated,
MetadataTools.GetColumnNameEnumerator(propertyValue.Key.ColumnIterator.GetEnumerator()),
referencingIdMapping);
}
// ******
// Generating the element mapping.
// ******
MiddleComponentData elementComponentData = AddValueToMiddleTable(propertyValue.Element, middleEntityXml,
queryGeneratorBuilder, referencedPrefix, propertyAuditingData.JoinTable.InverseJoinColumns);
// ******
// Generating the index mapping, if an index exists.
// ******
MiddleComponentData indexComponentData = AddIndex(middleEntityXml, queryGeneratorBuilder);
// ******
// Generating the property mapper.
// ******
// Building the query generator.
IRelationQueryGenerator queryGenerator = queryGeneratorBuilder.Build(new Collection <MiddleComponentData> {
elementComponentData, indexComponentData
});
// Creating common data
CommonCollectionMapperData commonCollectionMapperData = new CommonCollectionMapperData(
mainGenerator.VerEntCfg, auditMiddleEntityName,
propertyAuditingData.getPropertyData(),
referencingIdData, queryGenerator);
// Checking the type of the collection and adding an appropriate mapper.
AddMapper(commonCollectionMapperData, elementComponentData, indexComponentData);
// ******
// Storing information about this relation.
// ******
StoreMiddleEntityRelationInformation(mappedBy);
}