List of usage examples for org.hibernate.mapping Join addProperty
@Override
public void addProperty(Property prop)
From source file:org.eclipse.emf.teneo.hibernate.HbDataStore.java
License:Open Source License
/** * Extra lazy mapping for lists needs a real property for the list index and * a real inverse for the other side as well. * //from w ww . j a va 2s . c o m * This method iterates over all associations and adds an inverse for the * list and set mappings. */ protected void addExtraLazyInverseProperties() { final Map<String, PersistentClass> persistentClasses = new HashMap<String, PersistentClass>(); for (Iterator<?> pcs = getClassMappings(); pcs.hasNext();) { final PersistentClass pc = (PersistentClass) pcs.next(); if (isClassOrSuperClassEAVMapped(pc)) { continue; } persistentClasses.put(pc.getEntityName(), pc); } for (Iterator<?> pcs = getClassMappings(); pcs.hasNext();) { final PersistentClass pc = (PersistentClass) pcs.next(); // copy to prevent concurrent modification final Iterator<?> propIt = pc.getPropertyIterator(); final List<Property> props = new ArrayList<Property>(); while (propIt.hasNext()) { final Property prop = (Property) propIt.next(); props.add(prop); } for (Property prop : props) { EClass eClass = null; if (pc.getMetaAttribute(HbMapperConstants.FEATUREMAP_META) == null) { if (pc.getEntityName() != null) { eClass = getEntityNameStrategy().toEClass(pc.getEntityName()); } else { eClass = EModelResolver.instance().getEClass(pc.getMappedClass()); } } final EStructuralFeature ef = eClass == null ? null : StoreUtil.getEStructuralFeature(eClass, prop.getName()); if (ef != null && ef instanceof EReference && prop.getValue() instanceof Collection) { final Collection collection = (Collection) prop.getValue(); final EReference eReference = (EReference) ef; // only work for extra lazy if (!collection.isExtraLazy()) { continue; } final Value elementValue = collection.getElement(); final PersistentClass elementPC; if (elementValue instanceof OneToMany) { final OneToMany oneToMany = (OneToMany) elementValue; elementPC = oneToMany.getAssociatedClass(); } else if (elementValue instanceof ManyToOne) { final ManyToOne mto = (ManyToOne) elementValue; elementPC = persistentClasses.get(mto.getReferencedEntityName()); } else { continue; } if (isClassOrSuperClassEAVMapped(elementPC)) { continue; } collection.setInverse(true); // and add an eopposite if (eReference.getEOpposite() == null) { final Table collectionTable = collection.getCollectionTable(); if (isClassOrSuperClassEAVMapped(elementPC)) { continue; } final Property inverseRefProperty = new Property(); inverseRefProperty.setName(StoreUtil.getExtraLazyInversePropertyName(ef)); final Map<Object, Object> metas = new HashMap<Object, Object>(); final MetaAttribute metaAttribute = new MetaAttribute( HbConstants.SYNTHETIC_PROPERTY_INDICATOR); metaAttribute.addValue("true"); metas.put(HbConstants.SYNTHETIC_PROPERTY_INDICATOR, metaAttribute); inverseRefProperty.setMetaAttributes(metas); inverseRefProperty.setNodeName(inverseRefProperty.getName()); inverseRefProperty.setPropertyAccessorName(SyntheticPropertyHandler.class.getName()); inverseRefProperty.setLazy(false); final ManyToOne mto = new ManyToOne(getMappings(), collectionTable); mto.setReferencedEntityName(pc.getEntityName()); mto.setLazy(false); mto.setFetchMode(FetchMode.SELECT); inverseRefProperty.setValue(mto); final Iterator<?> it = collection.getKey().getColumnIterator(); while (it.hasNext()) { final Column originalColumn = (Column) it.next(); // final Column newColumn = new // Column(originalColumn.getName()); mto.addColumn(originalColumn); } mto.createForeignKey(); // now determine if a join should be created if (collectionTable.getName().equalsIgnoreCase(elementPC.getTable().getName())) { elementPC.addProperty(inverseRefProperty); } else { // create a join final Join join = new Join(); join.setPersistentClass(elementPC); join.setTable(collectionTable); join.addProperty(inverseRefProperty); final ManyToOne keyValue = new ManyToOne(getMappings(), collectionTable); join.setKey(keyValue); @SuppressWarnings("unchecked") final Iterator<Column> keyColumns = collection.getElement().getColumnIterator(); while (keyColumns.hasNext()) { keyValue.addColumn(keyColumns.next()); } keyValue.setReferencedEntityName(elementPC.getEntityName()); keyValue.setTable(collectionTable); keyValue.createForeignKey(); elementPC.addJoin(join); } } // add an opposite index if (collection.isIndexed() && !collection.isMap()) { Table collectionTable = collection.getCollectionTable(); IndexedCollection indexedCollection = (IndexedCollection) collection; final Column column = (Column) indexedCollection.getIndex().getColumnIterator().next(); final Property indexProperty = new Property(); indexProperty.setName(StoreUtil.getExtraLazyInverseIndexPropertyName(ef)); final Map<Object, Object> metas = new HashMap<Object, Object>(); final MetaAttribute metaAttribute = new MetaAttribute( HbConstants.SYNTHETIC_PROPERTY_INDICATOR); metaAttribute.addValue("true"); metas.put(HbConstants.SYNTHETIC_PROPERTY_INDICATOR, metaAttribute); indexProperty.setMetaAttributes(metas); indexProperty.setNodeName(indexProperty.getName()); indexProperty.setPropertyAccessorName(SyntheticPropertyHandler.class.getName()); // always make this nullable, nullability is controlled // by the main property indexProperty.setOptional(true); Join join = null; @SuppressWarnings("unchecked") final Iterator<Join> it = (Iterator<Join>) elementPC.getJoinIterator(); while (it.hasNext()) { final Join foundJoin = it.next(); if (foundJoin.getTable().getName().equalsIgnoreCase(collectionTable.getName())) { join = foundJoin; collectionTable = join.getTable(); break; } } final SimpleValue sv = new SimpleValue(getMappings(), indexedCollection.getIndex().getTable()); sv.setTypeName("integer"); // final Column svColumn = new Column(column.getName()); sv.addColumn(column); // checkColumnExists(collectionTable, // svColumn)); indexProperty.setValue(sv); if (join != null) { join.addProperty(indexProperty); } else { elementPC.addProperty(indexProperty); } } } } } }