/** INTERNAL: Transform the object-level value into a database-level value */
public Object getFieldValue(Object objectValue, AbstractSession session) {
DatabaseMapping mapping = getMapping();
Object fieldValue = objectValue;
if ((mapping != null)
&& (mapping.isDirectToFieldMapping() || mapping.isDirectCollectionMapping())) {
// CR#3623207, check for IN Collection here not in mapping.
if (objectValue instanceof Collection) {
// This can actually be a collection for IN within expressions... however it would be better
// for expressions to handle this.
Collection values = (Collection) objectValue;
Vector fieldValues = new Vector(values.size());
for (Iterator iterator = values.iterator(); iterator.hasNext(); ) {
Object value = iterator.next();
if (!(value instanceof Expression)) {
value = getFieldValue(value, session);
}
fieldValues.add(value);
}
fieldValue = fieldValues;
} else {
if (mapping.isDirectToFieldMapping()) {
fieldValue = ((AbstractDirectMapping) mapping).getFieldValue(objectValue, session);
} else if (mapping.isDirectCollectionMapping()) {
fieldValue = ((DirectCollectionMapping) mapping).getFieldValue(objectValue, session);
}
}
}
return fieldValue;
}
// operation should be either INSERT or UPDATE
protected void trimModifyRow(AbstractRecord modifyRow, int operation) {
if ((modifyRow == null) || modifyRow.isEmpty()) {
return;
}
Collection fields = main[operation][RETURN_ONLY];
if ((fields == null) || fields.isEmpty()) {
return;
}
for (int i = modifyRow.size() - 1; i >= 0; i--) {
DatabaseField field = modifyRow.getFields().get(i);
if (fields.contains(field)) {
modifyRow.remove(field);
}
}
}
protected void addCollectionToMain(int operation, int state, Collection collection) {
if ((collection == null) || collection.isEmpty()) {
return;
}
if (main[operation][state] == null) {
main[operation][state] = createCollection();
}
main[operation][state].addAll(collection);
}
/**
* INTERNAL: Execute the query. If there are cached results return those. This must override the
* super to support result caching.
*
* @param session - the session in which the receiver will be executed.
* @return An object or vector, the result of executing the query.
* @exception DatabaseException - an error has occurred on the database
*/
public Object execute(AbstractSession session, AbstractRecord row) throws DatabaseException {
if (shouldCacheQueryResults()) {
if (getContainerPolicy().overridesRead()) {
throw QueryException.cannotCacheCursorResultsOnQuery(this);
}
if (shouldConformResultsInUnitOfWork()) {
throw QueryException.cannotConformAndCacheQueryResults(this);
}
if (isPrepared()) { // only prepared queries can have cached results.
Object queryResults = getQueryResults(session, row, true);
if (queryResults != null) {
if (QueryMonitor.shouldMonitor()) {
QueryMonitor.incrementReadAllHits(this);
}
// bug6138532 - check for "cached no results" (InvalidObject singleton) in query
// results, and return an empty container instance as configured
if (queryResults == InvalidObject.instance) {
return getContainerPolicy().containerInstance(0);
}
Collection results = (Collection) queryResults;
if (session.isUnitOfWork()) {
ContainerPolicy policy = getContainerPolicy();
Object resultCollection = policy.containerInstance(results.size());
Object iterator = policy.iteratorFor(results);
while (policy.hasNext(iterator)) {
Object result =
((UnitOfWorkImpl) session)
.registerExistingObject(policy.next(iterator, session), this.descriptor);
policy.addInto(result, resultCollection, session);
}
return resultCollection;
}
return results;
}
}
}
if (QueryMonitor.shouldMonitor()) {
QueryMonitor.incrementReadAllMisses(this);
}
return super.execute(session, row);
}
/**
* INTERNAL: Compares two Collections as sets (ignoring the order of the elements). Note that the
* passed Collections are cloned. Used for testing only.
*/
public static boolean areCollectionsEqualAsSets(Collection col1, Collection col2) {
if (col1 == col2) {
return true;
}
if (col1.size() != col2.size()) {
return false;
}
Collection c1 = new ArrayList(col1);
Collection c2 = new ArrayList(col2);
for (Iterator i = c1.iterator(); i.hasNext(); ) {
Object o = i.next();
c2.remove(o);
}
return c2.isEmpty();
}
/** INTERNAL: */
public void validationAfterDescriptorInitialization(AbstractSession session) {
Hashtable mapped = new Hashtable();
for (int operation = INSERT; operation <= UPDATE; operation++) {
if ((main[operation][MAPPED] != null) && !main[operation][MAPPED].isEmpty()) {
Iterator it = main[operation][MAPPED].iterator();
while (it.hasNext()) {
DatabaseField field = (DatabaseField) it.next();
mapped.put(field, field);
}
}
}
if (!mapped.isEmpty()) {
for (Enumeration fields = getDescriptor().getFields().elements();
fields.hasMoreElements(); ) {
DatabaseField fieldInDescriptor = (DatabaseField) fields.nextElement();
DatabaseField fieldInMain = (DatabaseField) mapped.get(fieldInDescriptor);
if (fieldInMain != null) {
if (fieldInMain.getType() == null) {
if (getDescriptor().isReturnTypeRequiredForReturningPolicy()) {
session
.getIntegrityChecker()
.handleError(
DescriptorException.returningPolicyMappedFieldTypeNotSet(
fieldInMain.getName(), getDescriptor()));
}
} else if (isThereATypeConflict(fieldInMain, fieldInDescriptor)) {
session
.getIntegrityChecker()
.handleError(
DescriptorException.returningPolicyAndDescriptorFieldTypeConflict(
fieldInMain.getName(),
fieldInMain.getType().getName(),
fieldInDescriptor.getType().getName(),
getDescriptor()));
}
}
}
}
if (!(session.getDatasourcePlatform() instanceof DatabasePlatform)) {
// don't attempt further diagnostics on non-relational platforms
return;
}
WriteObjectQuery[] query = {
getDescriptor().getQueryManager().getInsertQuery(),
getDescriptor().getQueryManager().getUpdateQuery()
};
String[] queryTypeName = {"InsertObjectQuery", "UpdateObjectQuery"};
for (int operation = INSERT; operation <= UPDATE; operation++) {
if ((main[operation][ALL] != null) && !main[operation][ALL].isEmpty()) {
// this operation requires some fields to be returned
if ((query[operation] == null) || (query[operation].getDatasourceCall() == null)) {
if (!session.getPlatform().canBuildCallWithReturning()) {
session
.getIntegrityChecker()
.handleError(
DescriptorException.noCustomQueryForReturningPolicy(
queryTypeName[operation],
Helper.getShortClassName(session.getPlatform()),
getDescriptor()));
}
} else if (query[operation].getDatasourceCall() instanceof StoredProcedureCall) {
// SQLCall with custom SQL calculates its outputRowFields later (in prepare() method) -
// that's why SQLCall can't be verified here.
DatabaseCall customCall = (DatabaseCall) query[operation].getDatasourceCall();
Enumeration outputRowFields = customCall.getOutputRowFields().elements();
Collection notFoundInOutputRow = createCollection();
notFoundInOutputRow.addAll(main[operation][ALL]);
while (outputRowFields.hasMoreElements()) {
notFoundInOutputRow.remove(outputRowFields.nextElement());
}
if (!notFoundInOutputRow.isEmpty()) {
Iterator it = notFoundInOutputRow.iterator();
while (it.hasNext()) {
DatabaseField field = (DatabaseField) it.next();
session
.getIntegrityChecker()
.handleError(
DescriptorException.customQueryAndReturningPolicyFieldConflict(
field.getName(), queryTypeName[operation], getDescriptor()));
}
}
}
}
}
}