/**
* Check if underlying connector exists.
*
* @param name is the name of the connection to check.
* @return true if the underlying connector is registered.
*/
@Override
public boolean checkConnectorExists(String name) throws ManifoldCFException {
beginTransaction();
try {
StringSetBuffer ssb = new StringSetBuffer();
ssb.add(getRepositoryConnectionKey(name));
StringSet localCacheKeys = new StringSet(ssb);
ArrayList params = new ArrayList();
String query =
buildConjunctionClause(
params, new ClauseDescription[] {new UnitaryClause(nameField, name)});
IResultSet set =
performQuery(
"SELECT " + classNameField + " FROM " + getTableName() + " WHERE " + query,
params,
localCacheKeys,
null);
if (set.getRowCount() == 0)
throw new ManifoldCFException("No such connection: '" + name + "'");
IResultRow row = set.getRow(0);
String className = (String) row.getValue(classNameField);
IConnectorManager cm = ConnectorManagerFactory.make(threadContext);
return cm.isInstalled(className);
} catch (ManifoldCFException e) {
signalRollback();
throw e;
} catch (Error e) {
signalRollback();
throw e;
} finally {
endTransaction();
}
}
