Object castOrConvertToType(SessionInterface session, Object a, Type otherType, boolean cast) {
BlobData b;
if (a == null) {
return null;
}
switch (otherType.typeCode) {
// non-SQL feature, for compatibility with previous versions
case Types.SQL_VARCHAR:
case Types.SQL_CHAR:
{
b = session.getScanner().convertToBinary((String) a);
otherType = getBinaryType(Types.SQL_VARBINARY, b.length(session));
break;
}
case Types.SQL_BIT:
{
b = (BlobData) a;
otherType = getBinaryType(Types.SQL_VARBINARY, b.length(session));
break;
}
case Types.SQL_BINARY:
case Types.SQL_VARBINARY:
case Types.SQL_BLOB:
b = (BlobData) a;
break;
default:
throw Error.error(ErrorCode.X_22501);
}
if (precision == 0) {
return b; // never a blob
}
if (b.length(session) > precision && b.nonZeroLength(session) > precision) {
if (!cast) {
throw Error.error(ErrorCode.X_22001);
}
session.addWarning(Error.error(ErrorCode.W_01004));
}
if (otherType.typeCode == Types.SQL_BLOB) {
byte[] bytes = b.getBytes(session, 0, (int) precision);
b = new BinaryData(bytes, false);
}
switch (typeCode) {
case Types.SQL_BINARY:
{
if (b.length(session) > precision) {
byte[] data = b.getBytes(session, 0, (int) precision);
b = new BinaryData(data, false);
} else if (b.length(session) < precision) {
byte[] data = (byte[]) ArrayUtil.resizeArray(b.getBytes(), (int) precision);
b = new BinaryData(data, false);
}
return b;
}
case Types.SQL_VARBINARY:
{
if (b.length(session) > precision) {
byte[] data = b.getBytes(session, 0, (int) precision);
b = new BinaryData(data, false);
}
return b;
}
default:
}
throw Error.error(ErrorCode.X_22501);
}
@Override
public Object convertToType(SessionInterface session, Object a, Type otherType) {
if (a == null) {
return a;
}
if (otherType.typeCode == typeCode) {
switch (typeCode) {
case Types.SQL_NUMERIC:
case Types.SQL_DECIMAL:
if (otherType.scale == scale && otherType.precision <= precision) {
return a;
}
break;
default:
return a;
}
}
if (otherType.isIntervalType()) {
int endType = ((IntervalType) otherType).endIntervalType;
switch (endType) {
case Types.SQL_INTERVAL_YEAR:
case Types.SQL_INTERVAL_MONTH:
case Types.SQL_INTERVAL_DAY:
case Types.SQL_INTERVAL_HOUR:
case Types.SQL_INTERVAL_MINUTE:
{
Long value = ValuePool.getLong(((IntervalType) otherType).convertToLong(a));
return convertToType(session, value, Type.SQL_BIGINT);
}
case Types.SQL_INTERVAL_SECOND:
{
long seconds = ((IntervalSecondData) a).units;
long nanos = ((IntervalSecondData) a).nanos;
BigDecimal value = ((DTIType) otherType).getSecondPart(seconds, nanos);
return value;
}
}
}
switch (otherType.typeCode) {
case Types.SQL_CLOB:
a = ((ClobData) a).getSubString(session, 0L, (int) ((ClobData) a).length(session));
// fall through
case Types.SQL_CHAR:
case Types.SQL_VARCHAR:
case Types.VARCHAR_IGNORECASE:
{
a = session.getScanner().convertToNumber((String) a, this);
return convertToDefaultType(session, a);
}
case Types.TINYINT:
case Types.SQL_SMALLINT:
case Types.SQL_INTEGER:
case Types.SQL_BIGINT:
case Types.SQL_REAL:
case Types.SQL_FLOAT:
case Types.SQL_DOUBLE:
case Types.SQL_NUMERIC:
case Types.SQL_DECIMAL:
break;
default:
throw Error.error(ErrorCode.X_42561);
}
switch (this.typeCode) {
case Types.TINYINT:
case Types.SQL_SMALLINT:
case Types.SQL_INTEGER:
return convertToInt(a, this.typeCode);
case Types.SQL_BIGINT:
return convertToLong(a);
case Types.SQL_REAL:
case Types.SQL_FLOAT:
case Types.SQL_DOUBLE:
return convertToDouble(a);
case Types.SQL_NUMERIC:
case Types.SQL_DECIMAL:
BigDecimal value = convertToDecimal(a);
return convertToTypeLimits(session, value);
default:
throw Error.error(ErrorCode.X_42561);
}
}
