/** @inheritDoc */
@SuppressWarnings("unchecked")
public <T> T merge(final T theT) {
assertStateOk(theT);
Graph aExistingData = null;
if (theT instanceof EmpireGenerated) {
aExistingData = ((EmpireGenerated) theT).getInstanceTriples();
}
if (aExistingData == null || aExistingData.isEmpty()) {
try {
aExistingData = assertContainsAndDescribe(theT);
} catch (IllegalArgumentException e) {
// it doesnt exist, so really, nothing to delete
aExistingData = new GraphImpl();
}
}
try {
preUpdate(theT);
Graph aData = RdfGenerator.asRdf(theT);
boolean isTopOperation = (mOp == null);
DataSourceOperation aOp = new DataSourceOperation();
if (doesSupportNamedGraphs() && EmpireUtil.hasNamedGraphSpecified(theT)) {
java.net.URI aGraphURI = EmpireUtil.getNamedGraph(theT);
aOp.remove(aGraphURI, aExistingData);
aOp.add(aGraphURI, aData);
} else {
aOp.remove(aExistingData);
aOp.add(aData);
}
joinCurrentDataSourceOperation(aOp);
// cascade the merge
cascadeOperation(theT, new IsMergeCascade(), new MergeCascade());
finishCurrentDataSourceOperation(isTopOperation);
postUpdate(theT);
return theT;
} catch (DataSourceException ex) {
throw new PersistenceException(ex);
} catch (InvalidRdfException ex) {
throw new IllegalStateException(ex);
}
}
/** @inheritDoc */
public void remove(final Object theObj) {
assertStateOk(theObj);
Graph aData = assertContainsAndDescribe(theObj);
try {
preRemove(theObj);
boolean isTopOperation = (mOp == null);
DataSourceOperation aOp = new DataSourceOperation();
// we were transforming the current object to RDF and deleting that, but i dont think that's
// the intended
// behavior. you want to delete everything about the object in the database, not the
// properties specifically
// on the thing being deleted -- there's an obvious case where there could be a delta between
// them and you
// don't delete everything. so we'll do a describe on the object and delete everything we
// know about it
// i.e. everything where its in the subject position.
// Graph aData = RdfGenerator.asRdf(theObj);
// Graph aData = DataSourceUtil.describe(getDataSource(), theObj);
if (doesSupportNamedGraphs() && EmpireUtil.hasNamedGraphSpecified(theObj)) {
aOp.remove(EmpireUtil.getNamedGraph(theObj), aData);
} else {
aOp.remove(aData);
}
joinCurrentDataSourceOperation(aOp);
cascadeOperation(theObj, new IsRemoveCascade(), new RemoveCascade());
finishCurrentDataSourceOperation(isTopOperation);
postRemove(theObj);
} catch (DataSourceException ex) {
throw new PersistenceException(ex);
}
}
/** @inheritDoc */
public void persist(final Object theObj) {
assertStateOk(theObj);
try {
assertNotContains(theObj);
} catch (Throwable e) {
throw new EntityExistsException(e);
}
try {
prePersist(theObj);
boolean isTopOperation = (mOp == null);
DataSourceOperation aOp = new DataSourceOperation();
Graph aData = RdfGenerator.asRdf(theObj);
if (doesSupportNamedGraphs() && EmpireUtil.hasNamedGraphSpecified(theObj)) {
aOp.add(EmpireUtil.getNamedGraph(theObj), aData);
} else {
aOp.add(aData);
}
joinCurrentDataSourceOperation(aOp);
cascadeOperation(theObj, new IsPersistCascade(), new MergeCascade());
finishCurrentDataSourceOperation(isTopOperation);
postPersist(theObj);
} catch (InvalidRdfException ex) {
throw new IllegalStateException(ex);
} catch (DataSourceException ex) {
throw new PersistenceException(ex);
}
}