use of org.hibernate.envers.internal.entities.mapper.relation.component.MiddleRelatedComponentMapper in project hibernate-orm by hibernate.
the class CollectionMetadataGenerator method addValueToMiddleTable.
/**
* @param value Value, which should be mapped to the middle-table, either as a relation to another entity,
* or as a simple value.
* @param xmlMapping If not <code>null</code>, xml mapping for this value is added to this element.
* @param queryGeneratorBuilder In case <code>value</code> is a relation to another entity, information about it
* should be added to the given.
* @param prefix Prefix for proeprty names of related entities identifiers.
* @param joinColumns Names of columns to use in the xml mapping, if this array isn't null and has any elements.
*
* @return Data for mapping this component.
*/
@SuppressWarnings({ "unchecked" })
private MiddleComponentData addValueToMiddleTable(Value value, Element xmlMapping, QueryGeneratorBuilder queryGeneratorBuilder, String prefix, JoinColumn[] joinColumns, boolean key) {
final Type type = value.getType();
if (type instanceof ManyToOneType) {
final String prefixRelated = prefix + "_";
final String referencedEntityName = MappingTools.getReferencedEntityName(value);
final IdMappingData referencedIdMapping = mainGenerator.getReferencedIdMappingData(referencingEntityName, referencedEntityName, propertyAuditingData, true);
// relation isn't inverse (so when <code>xmlMapping</code> is not null).
if (xmlMapping != null) {
addRelatedToXmlMapping(xmlMapping, prefixRelated, joinColumns != null && joinColumns.length > 0 ? MetadataTools.getColumnNameIterator(joinColumns) : MetadataTools.getColumnNameIterator(value.getColumnIterator()), referencedIdMapping);
}
// Storing the id data of the referenced entity: original mapper, prefixed mapper and entity name.
final MiddleIdData referencedIdData = createMiddleIdData(referencedIdMapping, prefixRelated, referencedEntityName);
// And adding it to the generator builder.
queryGeneratorBuilder.addRelation(referencedIdData);
return new MiddleComponentData(new MiddleRelatedComponentMapper(referencedIdData), queryGeneratorBuilder.getCurrentIndex());
} else if (type instanceof ComponentType) {
// Collection of embeddable elements.
final Component component = (Component) value;
final Class componentClass = ReflectionTools.loadClass(component.getComponentClassName(), mainGenerator.getClassLoaderService());
final MiddleEmbeddableComponentMapper componentMapper = new MiddleEmbeddableComponentMapper(new MultiPropertyMapper(), componentClass);
final Element parentXmlMapping = xmlMapping.getParent();
final ComponentAuditingData auditData = new ComponentAuditingData();
final ReflectionManager reflectionManager = mainGenerator.getMetadata().getMetadataBuildingOptions().getReflectionManager();
new ComponentAuditedPropertiesReader(ModificationStore.FULL, new AuditedPropertiesReader.ComponentPropertiesSource(reflectionManager, component), auditData, mainGenerator.getGlobalCfg(), reflectionManager, "").read();
// Emulating first pass.
for (String auditedPropertyName : auditData.getPropertyNames()) {
final PropertyAuditingData nestedAuditingData = auditData.getPropertyAuditingData(auditedPropertyName);
mainGenerator.addValue(parentXmlMapping, component.getProperty(auditedPropertyName).getValue(), componentMapper, prefix, xmlMappingData, nestedAuditingData, true, true, true);
}
// Emulating second pass so that the relations can be mapped too.
for (String auditedPropertyName : auditData.getPropertyNames()) {
final PropertyAuditingData nestedAuditingData = auditData.getPropertyAuditingData(auditedPropertyName);
mainGenerator.addValue(parentXmlMapping, component.getProperty(auditedPropertyName).getValue(), componentMapper, referencingEntityName, xmlMappingData, nestedAuditingData, true, false, true);
}
// Embeddable properties may contain null values, so cannot be stored within composite primary key.
if (propertyValue.isSet()) {
final String setOrdinalPropertyName = mainGenerator.getVerEntCfg().getEmbeddableSetOrdinalPropertyName();
final Element ordinalProperty = MetadataTools.addProperty(xmlMapping, setOrdinalPropertyName, "integer", true, true);
MetadataTools.addColumn(ordinalProperty, setOrdinalPropertyName, null, null, null, null, null, null, false);
}
return new MiddleComponentData(componentMapper, 0);
} else {
// Last but one parameter: collection components are always insertable
final boolean mapped = mainGenerator.getBasicMetadataGenerator().addBasic(key ? xmlMapping : xmlMapping.getParent(), new PropertyAuditingData(prefix, "field", ModificationStore.FULL, RelationTargetAuditMode.AUDITED, null, null, false), value, null, true, key);
if (mapped && key) {
// Simple values are always stored in the first item of the array returned by the query generator.
return new MiddleComponentData(new MiddleSimpleComponentMapper(mainGenerator.getVerEntCfg(), prefix), 0);
} else if (mapped && !key) {
// when mapped but not part of the key, its stored as a dummy mapper??
return new MiddleComponentData(new MiddleMapElementNotKeyComponentMapper(mainGenerator.getVerEntCfg(), prefix), 0);
} else {
mainGenerator.throwUnsupportedTypeException(type, referencingEntityName, propertyName);
// Impossible to get here.
throw new AssertionError();
}
}
}
use of org.hibernate.envers.internal.entities.mapper.relation.component.MiddleRelatedComponentMapper in project hibernate-orm by hibernate.
the class CollectionMetadataGenerator method addOneToManyAttached.
@SuppressWarnings({ "unchecked" })
private void addOneToManyAttached(boolean fakeOneToManyBidirectional) {
LOG.debugf("Adding audit mapping for property %s.%s: one-to-many collection, using a join column on the referenced entity", referencingEntityName, propertyName);
// check whether the property has an @IndexColumn or @OrderColumn because its part of an
// IndexedCollection mapping type.
final boolean indexed = (propertyValue instanceof IndexedCollection) && ((IndexedCollection) propertyValue).getIndex() != null;
final String mappedBy = getMappedBy(propertyValue);
final IdMappingData referencedIdMapping = mainGenerator.getReferencedIdMappingData(referencingEntityName, referencedEntityName, propertyAuditingData, false);
final IdMappingData referencingIdMapping = referencingEntityConfiguration.getIdMappingData();
// Generating the id mappers data for the referencing side of the relation.
final MiddleIdData referencingIdData = createMiddleIdData(referencingIdMapping, mappedBy + "_", referencingEntityName);
// And for the referenced side. The prefixed mapper won't be used (as this collection isn't persisted
// in a join table, so the prefix value is arbitrary).
final MiddleIdData referencedIdData = createMiddleIdData(referencedIdMapping, null, referencedEntityName);
// Generating the element mapping.
final MiddleComponentData elementComponentData = new MiddleComponentData(new MiddleRelatedComponentMapper(referencedIdData), 0);
// Generating the index mapping, if an index exists. It can only exists in case a javax.persistence.MapKey
// annotation is present on the entity. So the middleEntityXml will be not be used. The queryGeneratorBuilder
// will only be checked for nullnes.
MiddleComponentData indexComponentData = addIndex(null, null);
// Generating the query generator - it should read directly from the related entity.
final RelationQueryGenerator queryGenerator = new OneAuditEntityQueryGenerator(mainGenerator.getGlobalCfg(), mainGenerator.getVerEntCfg(), mainGenerator.getAuditStrategy(), referencingIdData, referencedEntityName, referencedIdData, isEmbeddableElementType(), mappedBy, isMappedByKey(propertyValue, mappedBy));
// Creating common mapper data.
final CommonCollectionMapperData commonCollectionMapperData = new CommonCollectionMapperData(mainGenerator.getVerEntCfg(), referencedEntityName, propertyAuditingData.getPropertyData(), referencingIdData, queryGenerator);
PropertyMapper fakeBidirectionalRelationMapper;
PropertyMapper fakeBidirectionalRelationIndexMapper;
if (fakeOneToManyBidirectional || indexed) {
// In case of a fake many-to-one bidirectional relation, we have to generate a mapper which maps
// the mapped-by property name to the id of the related entity (which is the owner of the collection).
final String auditMappedBy;
if (fakeOneToManyBidirectional) {
auditMappedBy = propertyAuditingData.getAuditMappedBy();
} else {
auditMappedBy = propertyValue.getMappedByProperty();
}
// Creating a prefixed relation mapper.
final IdMapper relMapper = referencingIdMapping.getIdMapper().prefixMappedProperties(MappingTools.createToOneRelationPrefix(auditMappedBy));
fakeBidirectionalRelationMapper = new ToOneIdMapper(relMapper, // when constructing the PropertyData.
new PropertyData(auditMappedBy, null, null, null), referencingEntityName, false);
final String positionMappedBy;
if (fakeOneToManyBidirectional) {
positionMappedBy = propertyAuditingData.getPositionMappedBy();
} else if (indexed) {
final Value indexValue = ((IndexedCollection) propertyValue).getIndex();
positionMappedBy = indexValue.getColumnIterator().next().getText();
} else {
positionMappedBy = null;
}
// Checking if there's an index defined. If so, adding a mapper for it.
if (positionMappedBy != null) {
final Type indexType = ((IndexedCollection) propertyValue).getIndex().getType();
fakeBidirectionalRelationIndexMapper = new SinglePropertyMapper(PropertyData.forProperty(positionMappedBy, indexType));
// Also, overwriting the index component data to properly read the index.
indexComponentData = new MiddleComponentData(new MiddleStraightComponentMapper(positionMappedBy), 0);
} else {
fakeBidirectionalRelationIndexMapper = null;
}
} else {
fakeBidirectionalRelationMapper = null;
fakeBidirectionalRelationIndexMapper = null;
}
// Checking the type of the collection and adding an appropriate mapper.
addMapper(commonCollectionMapperData, elementComponentData, indexComponentData);
// Storing information about this relation.
referencingEntityConfiguration.addToManyNotOwningRelation(propertyName, mappedBy, referencedEntityName, referencingIdData.getPrefixedMapper(), fakeBidirectionalRelationMapper, fakeBidirectionalRelationIndexMapper, indexed);
}
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