private QueryResults execute(AccessMode accessMode)
throws QueryException, PersistenceException, TransactionNotInProgressException {
org.exolab.castor.persist.QueryResults results;
PersistenceQuery query;
SQLEngine engine;
QueryResults retVal = null;
;
if (_expr == null && _spCall == null)
throw new IllegalStateException("Must create query before using it");
try {
switch (_projectionType) {
case ParseTreeWalker.PARENT_OBJECT:
case ParseTreeWalker.DEPENDANT_OBJECT:
case ParseTreeWalker.DEPENDANT_OBJECT_VALUE:
// System.out.println("Executing object query");
engine = (SQLEngine) _dbEngine.getPersistence(_objClass);
if (_expr != null) {
query = engine.createQuery(_expr, _bindTypes);
} else {
query = engine.createCall(_spCall, _bindTypes);
if (query == null) throw new QueryException(Messages.message("query.callNotSupported"));
}
if (_bindValues != null) {
for (int i = 0; i < _bindValues.length; ++i) query.setParameter(i, _bindValues[i]);
}
results = _dbImpl.getTransaction().query(_dbEngine, query, accessMode);
_fieldNum = 0;
// System.out.println( _projectionType );
if (_projectionType == ParseTreeWalker.PARENT_OBJECT)
retVal = new OQLEnumeration(results);
else retVal = new OQLEnumeration(results, _pathInfo, _clsDesc);
break;
case ParseTreeWalker.DEPENDANT_VALUE:
case ParseTreeWalker.AGGREGATE:
case ParseTreeWalker.FUNCTION:
// System.out.println("Executing simple query");
SimpleQueryExecutor sqe = new SimpleQueryExecutor(_dbImpl);
retVal = sqe.execute(_expr, _bindValues);
}
} catch (PersistenceException except) {
throw except;
}
return (retVal);
}
/**
* Constructor.
*
* @param engine SQL engine for all persistence operations at entities of the type this class is
* responsible for. Holds all required information of the entity type.
*/
public SQLStatementDelete(final SQLEngine engine) {
_type = engine.getDescriptor().getJavaClass().getName();
_tableInfo = engine.getTableInfo();
buildStatement(new ClassDescriptorJDONature(engine.getDescriptor()).getTableName());
}