@Override
protected final void prepare(ExecuteContext ctx) throws SQLException {
// [#1296] These dialects do not implement FOR UPDATE. But the same
// effect can be achieved using ResultSet.CONCUR_UPDATABLE
if (isForUpdate() && asList(CUBRID, SQLSERVER).contains(ctx.getDialect())) {
ctx.statement(
ctx.getConnection().prepareStatement(ctx.sql(), TYPE_SCROLL_SENSITIVE, CONCUR_UPDATABLE));
}
// Regular behaviour
else {
ctx.statement(ctx.getConnection().prepareStatement(ctx.sql()));
}
// [#1263] Allow for negative fetch sizes to support some non-standard
// MySQL feature, where Integer.MIN_VALUE is used
if (size != 0) {
if (log.isDebugEnabled()) log.debug("Setting fetch size", size);
ctx.statement().setFetchSize(size);
}
// [#1854] Set the max number of rows for this result query
if (maxRows != 0) {
ctx.statement().setMaxRows(maxRows);
}
}
@Override
protected final int execute(ExecuteContext ctx, ExecuteListener listener) throws SQLException {
Connection connection = ctx.getConnection();
boolean autoCommit = false;
// [#706] Postgres requires two separate queries running in the same
// transaction to be executed when fetching refcursor types
if (ctx.getDialect() == SQLDialect.POSTGRES && isSelectingRefCursor()) {
autoCommit = connection.getAutoCommit();
if (autoCommit) {
if (log.isDebugEnabled()) log.debug("Unsetting auto-commit", false);
connection.setAutoCommit(false);
}
}
try {
listener.executeStart(ctx);
// JTDS doesn't seem to implement PreparedStatement.execute()
// correctly, at least not for sp_help
if (ctx.getDialect() == ASE) {
ctx.resultSet(ctx.statement().executeQuery());
}
// [#1232] Avoid executeQuery() in order to handle queries that may
// not return a ResultSet, e.g. SQLite's pragma foreign_key_list(table)
else if (ctx.statement().execute()) {
ctx.resultSet(ctx.statement().getResultSet());
}
listener.executeEnd(ctx);
// Fetch a single result set
if (!many) {
if (ctx.resultSet() != null) {
FieldList fields = new FieldList(getFields(ctx.resultSet().getMetaData()));
cursor = new CursorImpl<R>(ctx, listener, fields, getRecordType());
if (!lazy) {
result = cursor.fetch();
cursor = null;
}
} else {
result = new ResultImpl<R>(ctx, new FieldList());
}
}
// Fetch several result sets
else {
results = new ArrayList<Result<Record>>();
boolean anyResults = false;
while (ctx.resultSet() != null) {
anyResults = true;
FieldProvider fields = new MetaDataFieldProvider(ctx, ctx.resultSet().getMetaData());
Cursor<Record> c = new CursorImpl<Record>(ctx, listener, fields, true);
results.add(c.fetch());
if (ctx.statement().getMoreResults()) {
ctx.resultSet(ctx.statement().getResultSet());
} else {
ctx.resultSet(null);
}
}
// Call this only when there was at least one ResultSet.
// Otherwise, this call is not supported by ojdbc...
if (anyResults) {
ctx.statement().getMoreResults(Statement.CLOSE_ALL_RESULTS);
}
ctx.statement().close();
}
} finally {
if (autoCommit) {
if (log.isDebugEnabled()) log.debug("Resetting auto-commit", autoCommit);
connection.setAutoCommit(autoCommit);
}
}
return result != null ? result.size() : 0;
}
@SuppressWarnings("unchecked")
public static <T> T getFromStatement(ExecuteContext ctx, Class<? extends T> type, int index)
throws SQLException {
CallableStatement stmt = (CallableStatement) ctx.statement();
if (type == Blob.class) {
return (T) stmt.getBlob(index);
} else if (type == Boolean.class) {
return (T) checkWasNull(stmt, Boolean.valueOf(stmt.getBoolean(index)));
} else if (type == BigInteger.class) {
BigDecimal result = stmt.getBigDecimal(index);
return (T) (result == null ? null : result.toBigInteger());
} else if (type == BigDecimal.class) {
return (T) stmt.getBigDecimal(index);
} else if (type == Byte.class) {
return (T) checkWasNull(stmt, Byte.valueOf(stmt.getByte(index)));
} else if (type == byte[].class) {
return (T) stmt.getBytes(index);
} else if (type == Clob.class) {
return (T) stmt.getClob(index);
} else if (type == Date.class) {
return (T) stmt.getDate(index);
} else if (type == Double.class) {
return (T) checkWasNull(stmt, Double.valueOf(stmt.getDouble(index)));
} else if (type == Float.class) {
return (T) checkWasNull(stmt, Float.valueOf(stmt.getFloat(index)));
} else if (type == Integer.class) {
return (T) checkWasNull(stmt, Integer.valueOf(stmt.getInt(index)));
} else if (type == Long.class) {
return (T) checkWasNull(stmt, Long.valueOf(stmt.getLong(index)));
} else if (type == Short.class) {
return (T) checkWasNull(stmt, Short.valueOf(stmt.getShort(index)));
} else if (type == String.class) {
return (T) stmt.getString(index);
} else if (type == Time.class) {
return (T) stmt.getTime(index);
} else if (type == Timestamp.class) {
return (T) stmt.getTimestamp(index);
} else if (type == YearToMonth.class) {
if (ctx.getDialect() == POSTGRES) {
Object object = stmt.getObject(index);
return (T) (object == null ? null : PostgresUtils.toYearToMonth(object));
} else {
String string = stmt.getString(index);
return (T) (string == null ? null : YearToMonth.valueOf(string));
}
} else if (type == DayToSecond.class) {
if (ctx.getDialect() == POSTGRES) {
Object object = stmt.getObject(index);
return (T) (object == null ? null : PostgresUtils.toDayToSecond(object));
} else {
String string = stmt.getString(index);
return (T) (string == null ? null : DayToSecond.valueOf(string));
}
} else if (type == UByte.class) {
String string = stmt.getString(index);
return (T) (string == null ? null : UByte.valueOf(string));
} else if (type == UShort.class) {
String string = stmt.getString(index);
return (T) (string == null ? null : UShort.valueOf(string));
} else if (type == UInteger.class) {
String string = stmt.getString(index);
return (T) (string == null ? null : UInteger.valueOf(string));
} else if (type == ULong.class) {
String string = stmt.getString(index);
return (T) (string == null ? null : ULong.valueOf(string));
}
// The type byte[] is handled earlier. byte[][] can be handled here
else if (type.isArray()) {
return (T) convertArray(stmt.getObject(index), (Class<? extends Object[]>) type);
} else if (ArrayRecord.class.isAssignableFrom(type)) {
return (T) getArrayRecord(ctx, stmt.getArray(index), (Class<? extends ArrayRecord<?>>) type);
} else if (EnumType.class.isAssignableFrom(type)) {
return getEnumType(type, stmt.getString(index));
} else if (MasterDataType.class.isAssignableFrom(type)) {
return (T) getMasterDataType(type, stmt.getString(index));
} else if (UDTRecord.class.isAssignableFrom(type)) {
switch (ctx.getDialect()) {
case POSTGRES:
return (T) pgNewUDTRecord(type, stmt.getObject(index));
}
return (T) stmt.getObject(index, DataTypes.udtRecords());
} else if (Result.class.isAssignableFrom(type)) {
ResultSet nested = (ResultSet) stmt.getObject(index);
return (T) getNewFactory(ctx).fetch(nested);
} else {
return (T) stmt.getObject(index);
}
}
@SuppressWarnings("unchecked")
private static <T> T getFromResultSet(ExecuteContext ctx, Class<? extends T> type, int index)
throws SQLException {
ResultSet rs = ctx.resultSet();
if (type == Blob.class) {
return (T) rs.getBlob(index);
} else if (type == Boolean.class) {
return (T) checkWasNull(rs, Boolean.valueOf(rs.getBoolean(index)));
} else if (type == BigInteger.class) {
// The SQLite JDBC driver doesn't support BigDecimals
if (ctx.getDialect() == SQLDialect.SQLITE) {
return Convert.convert(rs.getString(index), (Class<? extends T>) BigInteger.class);
} else {
BigDecimal result = rs.getBigDecimal(index);
return (T) (result == null ? null : result.toBigInteger());
}
} else if (type == BigDecimal.class) {
// The SQLite JDBC driver doesn't support BigDecimals
if (ctx.getDialect() == SQLDialect.SQLITE) {
return Convert.convert(rs.getString(index), (Class<? extends T>) BigDecimal.class);
} else {
return (T) rs.getBigDecimal(index);
}
} else if (type == Byte.class) {
return (T) checkWasNull(rs, Byte.valueOf(rs.getByte(index)));
} else if (type == byte[].class) {
return (T) rs.getBytes(index);
} else if (type == Clob.class) {
return (T) rs.getClob(index);
} else if (type == Date.class) {
return (T) getDate(ctx.getDialect(), rs, index);
} else if (type == Double.class) {
return (T) checkWasNull(rs, Double.valueOf(rs.getDouble(index)));
} else if (type == Float.class) {
return (T) checkWasNull(rs, Float.valueOf(rs.getFloat(index)));
} else if (type == Integer.class) {
return (T) checkWasNull(rs, Integer.valueOf(rs.getInt(index)));
} else if (type == Long.class) {
return (T) checkWasNull(rs, Long.valueOf(rs.getLong(index)));
} else if (type == Short.class) {
return (T) checkWasNull(rs, Short.valueOf(rs.getShort(index)));
} else if (type == String.class) {
return (T) rs.getString(index);
} else if (type == Time.class) {
return (T) getTime(ctx.getDialect(), rs, index);
} else if (type == Timestamp.class) {
return (T) getTimestamp(ctx.getDialect(), rs, index);
} else if (type == YearToMonth.class) {
if (ctx.getDialect() == POSTGRES) {
Object object = rs.getObject(index);
return (T) (object == null ? null : PostgresUtils.toYearToMonth(object));
} else {
String string = rs.getString(index);
return (T) (string == null ? null : YearToMonth.valueOf(string));
}
} else if (type == DayToSecond.class) {
if (ctx.getDialect() == POSTGRES) {
Object object = rs.getObject(index);
return (T) (object == null ? null : PostgresUtils.toDayToSecond(object));
} else {
String string = rs.getString(index);
return (T) (string == null ? null : DayToSecond.valueOf(string));
}
} else if (type == UByte.class) {
String string = rs.getString(index);
return (T) (string == null ? null : UByte.valueOf(string));
} else if (type == UShort.class) {
String string = rs.getString(index);
return (T) (string == null ? null : UShort.valueOf(string));
} else if (type == UInteger.class) {
String string = rs.getString(index);
return (T) (string == null ? null : UInteger.valueOf(string));
} else if (type == ULong.class) {
String string = rs.getString(index);
return (T) (string == null ? null : ULong.valueOf(string));
}
// The type byte[] is handled earlier. byte[][] can be handled here
else if (type.isArray()) {
switch (ctx.getDialect()) {
case POSTGRES:
{
return pgGetArray(ctx, type, index);
}
default:
// Note: due to a HSQLDB bug, it is not recommended to call rs.getObject() here:
// See https://sourceforge.net/tracker/?func=detail&aid=3181365&group_id=23316&atid=378131
return (T) convertArray(rs.getArray(index), (Class<? extends Object[]>) type);
}
} else if (ArrayRecord.class.isAssignableFrom(type)) {
return (T) getArrayRecord(ctx, rs.getArray(index), (Class<? extends ArrayRecord<?>>) type);
} else if (EnumType.class.isAssignableFrom(type)) {
return getEnumType(type, rs.getString(index));
} else if (MasterDataType.class.isAssignableFrom(type)) {
return (T) getMasterDataType(type, rs.getObject(index));
} else if (UDTRecord.class.isAssignableFrom(type)) {
switch (ctx.getDialect()) {
case POSTGRES:
return (T) pgNewUDTRecord(type, rs.getObject(index));
}
return (T) rs.getObject(index, DataTypes.udtRecords());
} else if (Result.class.isAssignableFrom(type)) {
ResultSet nested = (ResultSet) rs.getObject(index);
return (T) getNewFactory(ctx).fetch(nested);
} else {
return (T) rs.getObject(index);
}
}