/**
* For a component, add to a list of associations to be fetched by outerjoin
*
* @param componentType The component type to be walked.
* @param propertyNumber The property number for the component property (relative to persister).
* @param begin todo unknowm
* @param persister The owner of the component property
* @param alias The root alias
* @param path The property access path
* @param currentDepth The current join depth
* @throws org.hibernate.MappingException ???
*/
private void walkComponentTree(
final CompositeType componentType,
final int propertyNumber,
int begin,
final OuterJoinLoadable persister,
final String alias,
final PropertyPath path,
final int currentDepth)
throws MappingException {
Type[] types = componentType.getSubtypes();
String[] propertyNames = componentType.getPropertyNames();
for (int i = 0; i < types.length; i++) {
if (types[i].isAssociationType()) {
AssociationType associationType = (AssociationType) types[i];
String[] aliasedLhsColumns =
JoinHelper.getAliasedLHSColumnNames(
associationType, alias, propertyNumber, begin, persister, getFactory());
String[] lhsColumns =
JoinHelper.getLHSColumnNames(
associationType, propertyNumber, begin, persister, getFactory());
String lhsTable = JoinHelper.getLHSTableName(associationType, propertyNumber, persister);
final PropertyPath subPath = path.append(propertyNames[i]);
final boolean[] propertyNullability = componentType.getPropertyNullability();
final JoinType joinType =
getJoinType(
persister,
subPath,
propertyNumber,
associationType,
componentType.getFetchMode(i),
componentType.getCascadeStyle(i),
lhsTable,
lhsColumns,
propertyNullability == null || propertyNullability[i],
currentDepth);
addAssociationToJoinTreeIfNecessary(
associationType, aliasedLhsColumns, alias, subPath, currentDepth, joinType);
} else if (types[i].isComponentType()) {
final PropertyPath subPath = path.append(propertyNames[i]);
walkComponentTree(
(CompositeType) types[i],
propertyNumber,
begin,
persister,
alias,
subPath,
currentDepth);
}
begin += types[i].getColumnSpan(getFactory());
}
}
/**
* Walk the association tree for an entity, adding associations which should be join fetched to
* the {@link #associations} inst var. This form is the entry point into the walking for a given
* entity, starting the recursive calls into {@link
* #walkEntityTree(org.hibernate.persister.entity.OuterJoinLoadable, String, PropertyPath ,int)}.
*
* @param persister The persister representing the entity to be walked.
* @param alias The (root) alias to use for this entity/persister.
* @param path The property path to the entity being walked
* @param currentDepth The current join depth
* @throws org.hibernate.MappingException ???
*/
private void walkEntityTree(
final OuterJoinLoadable persister,
final String alias,
final PropertyPath path,
final int currentDepth)
throws MappingException {
int n = persister.countSubclassProperties();
for (int i = 0; i < n; i++) {
Type type = persister.getSubclassPropertyType(i);
if (type.isAssociationType()) {
walkEntityAssociationTree(
(AssociationType) type,
persister,
i,
alias,
path,
persister.isSubclassPropertyNullable(i),
currentDepth);
} else if (type.isComponentType()) {
walkComponentTree(
(CompositeType) type,
i,
0,
persister,
alias,
path.append(persister.getSubclassPropertyName(i)),
currentDepth);
}
}
// if the entity has a composite identifier, see if we need to handle
// its sub-properties separately
final Type idType = persister.getIdentifierType();
if (idType.isComponentType()) {
final CompositeType cidType = (CompositeType) idType;
if (cidType.isEmbedded()) {
// we have an embedded composite identifier. Most likely we need to process the composite
// properties separately, although there is an edge case where the identifier is really
// a simple identifier (single value) wrapped in a JPA @IdClass or even in the case of a
// a simple identifier (single value) wrapped in a Hibernate composite type.
//
// We really do not have a built-in method to determine that. However, generally the
// persister would report that there is single, physical identifier property which is
// explicitly at odds with the notion of "embedded composite". So we use that for now
if (persister.getEntityMetamodel().getIdentifierProperty().isEmbedded()) {
walkComponentTree(cidType, -1, 0, persister, alias, path.append(""), currentDepth);
}
}
}
}
/** For a composite element, add to a list of associations to be fetched by outerjoin */
private void walkCompositeElementTree(
final CompositeType compositeType,
final String[] cols,
final QueryableCollection persister,
final String alias,
final PropertyPath path,
final int currentDepth)
throws MappingException {
Type[] types = compositeType.getSubtypes();
String[] propertyNames = compositeType.getPropertyNames();
int begin = 0;
for (int i = 0; i < types.length; i++) {
int length = types[i].getColumnSpan(getFactory());
String[] lhsColumns = ArrayHelper.slice(cols, begin, length);
if (types[i].isAssociationType()) {
AssociationType associationType = (AssociationType) types[i];
// simple, because we can't have a one-to-one or a collection
// (or even a property-ref) in a composite-element:
String[] aliasedLhsColumns = StringHelper.qualify(alias, lhsColumns);
final PropertyPath subPath = path.append(propertyNames[i]);
final boolean[] propertyNullability = compositeType.getPropertyNullability();
final JoinType joinType =
getJoinType(
associationType,
compositeType.getFetchMode(i),
subPath,
persister.getTableName(),
lhsColumns,
propertyNullability == null || propertyNullability[i],
currentDepth,
compositeType.getCascadeStyle(i));
addAssociationToJoinTreeIfNecessary(
associationType, aliasedLhsColumns, alias, subPath, currentDepth, joinType);
} else if (types[i].isComponentType()) {
final PropertyPath subPath = path.append(propertyNames[i]);
walkCompositeElementTree(
(CompositeType) types[i], lhsColumns, persister, alias, subPath, currentDepth);
}
begin += length;
}
}
public CascadeStyle getCascadeStyle() throws MappingException {
Type type = value.getType();
if (type.isComponentType() && !type.isAnyType()) {
CompositeType actype = (CompositeType) type;
int length = actype.getSubtypes().length;
for (int i = 0; i < length; i++) {
if (actype.getCascadeStyle(i) != CascadeStyle.NONE) return CascadeStyle.ALL;
}
return CascadeStyle.NONE;
} else if (cascade == null || cascade.equals("none")) {
return CascadeStyle.NONE;
} else {
StringTokenizer tokens = new StringTokenizer(cascade, ", ");
CascadeStyle[] styles = new CascadeStyle[tokens.countTokens()];
int i = 0;
while (tokens.hasMoreTokens()) {
styles[i++] = CascadeStyle.getCascadeStyle(tokens.nextToken());
}
return new CascadeStyle.MultipleCascadeStyle(styles);
}
}
