private void handleError(JdbcConnection connection, Exception e)
throws DatabaseException, CustomChangeException {
connection.rollback();
throw new CustomChangeException(e);
}
/** Method to perform validation and resolution of duplicate EncounterType names */
@Override
public void execute(Database database) throws CustomChangeException {
JdbcConnection connection = (JdbcConnection) database.getConnection();
Map<String, HashSet<Integer>> duplicates = new HashMap<String, HashSet<Integer>>();
Statement stmt = null;
PreparedStatement pStmt = null;
ResultSet rs = null;
try {
// set auto commit mode to false for UPDATE action
connection.setAutoCommit(false);
stmt = connection.createStatement();
rs =
stmt.executeQuery(
"SELECT * FROM encounter_type INNER JOIN (SELECT name FROM encounter_type GROUP BY name HAVING count(name) > 1) dup ON encounter_type.name = dup.name");
Integer id = null;
String name = null;
while (rs.next()) {
id = rs.getInt("encounter_type_id");
name = rs.getString("name");
if (duplicates.get(name) == null) {
HashSet<Integer> results = new HashSet<Integer>();
results.add(id);
duplicates.put(name, results);
} else {
HashSet<Integer> results = duplicates.get(name);
results.add(id);
}
}
Iterator it2 = duplicates.entrySet().iterator();
while (it2.hasNext()) {
Map.Entry pairs = (Map.Entry) it2.next();
HashSet values = (HashSet) pairs.getValue();
List<Integer> editableNames = new ArrayList<Integer>(values);
int duplicateNameId = 1;
for (int i = 1; i < editableNames.size(); i++) {
String newName = pairs.getKey() + "_" + duplicateNameId;
List<List<Object>> duplicateResult = null;
boolean duplicateName = false;
Connection con = DatabaseUpdater.getConnection();
do {
String sqlValidatorString =
"select * from encounter_type where name = '" + newName + "'";
duplicateResult = DatabaseUtil.executeSQL(con, sqlValidatorString, true);
if (!duplicateResult.isEmpty()) {
duplicateNameId += 1;
newName = pairs.getKey() + "_" + duplicateNameId;
duplicateName = true;
} else {
duplicateName = false;
}
} while (duplicateName);
pStmt =
connection.prepareStatement(
"update encounter_type set name = ? where encounter_type_id = ?");
pStmt.setString(1, newName);
pStmt.setInt(2, editableNames.get(i));
duplicateNameId += 1;
pStmt.executeUpdate();
}
}
} catch (BatchUpdateException e) {
log.warn("Error generated while processsing batch insert", e);
try {
log.debug("Rolling back batch", e);
connection.rollback();
} catch (Exception rbe) {
log.warn("Error generated while rolling back batch insert", e);
}
// marks the changeset as a failed one
throw new CustomChangeException(
"Failed to update one or more suplicate EncounterType names", e);
} catch (DatabaseException e) {
throw new CustomChangeException(
"Error while updating duplicate EncounterType object names", e);
} catch (SQLException e) {
throw new CustomChangeException(
"Error while updating duplicate EncounterType object names", e);
} catch (DAOException e) {
throw new CustomChangeException("Error accessing database connection", e);
} catch (Exception e) {
throw new CustomChangeException("Error accessing database connection", e);
} finally {
// reset to auto commit mode
try {
connection.setAutoCommit(true);
} catch (DatabaseException e) {
log.warn("Failed to reset auto commit back to true", e);
}
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
log.warn("Failed to close the resultset object");
}
}
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
log.warn(
"Failed to close the select statement used to identify duplicate EncounterType object names");
}
}
if (pStmt != null) {
try {
pStmt.close();
} catch (SQLException e) {
log.warn(
"Failed to close the prepared statement used to update duplicate EncounterType object names");
}
}
}
}