public Expression[] getExpressionColumns(Session session) {
switch (getType()) {
case Value.RESULT_SET:
ValueResultSet rs = getValueForColumnList(session, getArgs());
return getExpressionColumns(session, rs.getResultSet());
case Value.ARRAY:
return getExpressionColumns(session, (ValueArray) getValue(session));
}
return super.getExpressionColumns(session);
}
private void testCastTrim() {
Value v;
String spaces = new String(new char[100]).replace((char) 0, ' ');
v = ValueArray.get(new Value[] {ValueString.get("hello"), ValueString.get("world")});
assertEquals(10, v.getPrecision());
assertEquals(5, v.convertPrecision(5, true).getPrecision());
v = ValueArray.get(new Value[] {ValueString.get(""), ValueString.get("")});
assertEquals(0, v.getPrecision());
assertEquals("('')", v.convertPrecision(1, true).toString());
v = ValueBytes.get(spaces.getBytes());
assertEquals(100, v.getPrecision());
assertEquals(10, v.convertPrecision(10, false).getPrecision());
assertEquals(10, v.convertPrecision(10, false).getBytes().length);
assertEquals(32, v.convertPrecision(10, false).getBytes()[9]);
assertEquals(10, v.convertPrecision(10, true).getPrecision());
final Value vd = ValueDecimal.get(new BigDecimal("1234567890.123456789"));
assertEquals(19, vd.getPrecision());
assertEquals("1234567890.1234567", vd.convertPrecision(10, true).getString());
new AssertThrows(ErrorCode.NUMERIC_VALUE_OUT_OF_RANGE_1) {
@Override
public void test() {
vd.convertPrecision(10, false);
}
};
v = ValueLobDb.createSmallLob(Value.CLOB, spaces.getBytes(), 100);
assertEquals(100, v.getPrecision());
assertEquals(10, v.convertPrecision(10, false).getPrecision());
assertEquals(10, v.convertPrecision(10, false).getString().length());
assertEquals(" ", v.convertPrecision(10, false).getString());
assertEquals(10, v.convertPrecision(10, true).getPrecision());
v = ValueLobDb.createSmallLob(Value.BLOB, spaces.getBytes(), 100);
assertEquals(100, v.getPrecision());
assertEquals(10, v.convertPrecision(10, false).getPrecision());
assertEquals(10, v.convertPrecision(10, false).getBytes().length);
assertEquals(32, v.convertPrecision(10, false).getBytes()[9]);
assertEquals(10, v.convertPrecision(10, true).getPrecision());
ResultSet rs = new SimpleResultSet();
v = ValueResultSet.get(rs);
assertEquals(Integer.MAX_VALUE, v.getPrecision());
assertEquals(Integer.MAX_VALUE, v.convertPrecision(10, false).getPrecision());
assertTrue(rs == v.convertPrecision(10, false).getObject());
assertFalse(rs == v.convertPrecision(10, true).getObject());
assertEquals(Integer.MAX_VALUE, v.convertPrecision(10, true).getPrecision());
v = ValueString.get(spaces);
assertEquals(100, v.getPrecision());
assertEquals(10, v.convertPrecision(10, false).getPrecision());
assertEquals(" ", v.convertPrecision(10, false).getString());
assertEquals(" ", v.convertPrecision(10, true).getString());
}
/**
* Read a value.
*
* @return the value
*/
public Value readValue() {
int type = data[pos++] & 255;
switch (type) {
case Value.NULL:
return ValueNull.INSTANCE;
case BOOLEAN_TRUE:
return ValueBoolean.get(true);
case BOOLEAN_FALSE:
return ValueBoolean.get(false);
case INT_NEG:
return ValueInt.get(-readVarInt());
case Value.INT:
return ValueInt.get(readVarInt());
case LONG_NEG:
return ValueLong.get(-readVarLong());
case Value.LONG:
return ValueLong.get(readVarLong());
case Value.BYTE:
return ValueByte.get(readByte());
case Value.SHORT:
return ValueShort.get(readShortInt());
case DECIMAL_0_1:
return (ValueDecimal) ValueDecimal.ZERO;
case DECIMAL_0_1 + 1:
return (ValueDecimal) ValueDecimal.ONE;
case DECIMAL_SMALL_0:
return ValueDecimal.get(BigDecimal.valueOf(readVarLong()));
case DECIMAL_SMALL:
{
int scale = readVarInt();
return ValueDecimal.get(BigDecimal.valueOf(readVarLong(), scale));
}
case Value.DECIMAL:
{
int scale = readVarInt();
int len = readVarInt();
byte[] buff = DataUtils.newBytes(len);
read(buff, 0, len);
BigInteger b = new BigInteger(buff);
return ValueDecimal.get(new BigDecimal(b, scale));
}
case LOCAL_DATE:
{
return ValueDate.fromDateValue(readVarLong());
}
case Value.DATE:
{
long x = readVarLong() * MILLIS_PER_MINUTE;
return ValueDate.get(new Date(DateTimeUtils.getTimeUTCWithoutDst(x)));
}
case LOCAL_TIME:
{
long nanos = readVarLong() * 1000000 + readVarLong();
return ValueTime.fromNanos(nanos);
}
case Value.TIME:
// need to normalize the year, month and day
return ValueTime.get(new Time(DateTimeUtils.getTimeUTCWithoutDst(readVarLong())));
case LOCAL_TIMESTAMP:
{
long dateValue = readVarLong();
long nanos = readVarLong() * 1000000 + readVarLong();
return ValueTimestamp.fromDateValueAndNanos(dateValue, nanos);
}
case Value.TIMESTAMP:
{
Timestamp ts = new Timestamp(DateTimeUtils.getTimeUTCWithoutDst(readVarLong()));
ts.setNanos(readVarInt());
return ValueTimestamp.get(ts);
}
case Value.BYTES:
{
int len = readVarInt();
byte[] b = DataUtils.newBytes(len);
read(b, 0, len);
return ValueBytes.getNoCopy(b);
}
case Value.GEOMETRY:
{
int len = readVarInt();
byte[] b = DataUtils.newBytes(len);
read(b, 0, len);
return ValueGeometry.get(b);
}
case Value.JAVA_OBJECT:
{
int len = readVarInt();
byte[] b = DataUtils.newBytes(len);
read(b, 0, len);
return ValueJavaObject.getNoCopy(null, b, handler);
}
case Value.UUID:
return ValueUuid.get(readLong(), readLong());
case Value.STRING:
return ValueString.get(readString());
case Value.STRING_IGNORECASE:
return ValueStringIgnoreCase.get(readString());
case Value.STRING_FIXED:
return ValueStringFixed.get(readString());
case FLOAT_0_1:
return ValueFloat.get(0);
case FLOAT_0_1 + 1:
return ValueFloat.get(1);
case DOUBLE_0_1:
return ValueDouble.get(0);
case DOUBLE_0_1 + 1:
return ValueDouble.get(1);
case Value.DOUBLE:
return ValueDouble.get(Double.longBitsToDouble(Long.reverse(readVarLong())));
case Value.FLOAT:
return ValueFloat.get(Float.intBitsToFloat(Integer.reverse(readVarInt())));
case Value.BLOB:
case Value.CLOB:
{
int smallLen = readVarInt();
if (smallLen >= 0) {
byte[] small = DataUtils.newBytes(smallLen);
read(small, 0, smallLen);
return ValueLobDb.createSmallLob(type, small);
} else if (smallLen == -3) {
int tableId = readVarInt();
long lobId = readVarLong();
long precision = readVarLong();
ValueLobDb lob = ValueLobDb.create(type, handler, tableId, lobId, null, precision);
return lob;
} else {
int tableId = readVarInt();
int objectId = readVarInt();
long precision = 0;
boolean compression = false;
// -1: regular; -2: regular, but not linked (in this case:
// including file name)
if (smallLen == -1 || smallLen == -2) {
precision = readVarLong();
compression = readByte() == 1;
}
if (smallLen == -2) {
String filename = readString();
return ValueLob.openUnlinked(
type, handler, tableId, objectId, precision, compression, filename);
}
return ValueLob.openLinked(type, handler, tableId, objectId, precision, compression);
}
}
case Value.ARRAY:
{
int len = readVarInt();
Value[] list = new Value[len];
for (int i = 0; i < len; i++) {
list[i] = readValue();
}
return ValueArray.get(list);
}
case Value.RESULT_SET:
{
SimpleResultSet rs = new SimpleResultSet();
rs.setAutoClose(false);
int columns = readVarInt();
for (int i = 0; i < columns; i++) {
rs.addColumn(readString(), readVarInt(), readVarInt(), readVarInt());
}
while (true) {
if (readByte() == 0) {
break;
}
Object[] o = new Object[columns];
for (int i = 0; i < columns; i++) {
o[i] = readValue().getObject();
}
rs.addRow(o);
}
return ValueResultSet.get(rs);
}
default:
if (type >= INT_0_15 && type < INT_0_15 + 16) {
return ValueInt.get(type - INT_0_15);
} else if (type >= LONG_0_7 && type < LONG_0_7 + 8) {
return ValueLong.get(type - LONG_0_7);
} else if (type >= BYTES_0_31 && type < BYTES_0_31 + 32) {
int len = type - BYTES_0_31;
byte[] b = DataUtils.newBytes(len);
read(b, 0, len);
return ValueBytes.getNoCopy(b);
} else if (type >= STRING_0_31 && type < STRING_0_31 + 32) {
return ValueString.get(readString(type - STRING_0_31));
}
throw DbException.get(ErrorCode.FILE_CORRUPTED_1, "type: " + type);
}
}
private void testValueResultSet() throws SQLException {
SimpleResultSet rs = new SimpleResultSet();
rs.setAutoClose(false);
rs.addColumn("ID", Types.INTEGER, 0, 0);
rs.addColumn("NAME", Types.VARCHAR, 255, 0);
rs.addRow(1, "Hello");
rs.addRow(2, "World");
rs.addRow(3, "Peace");
ValueResultSet v;
v = ValueResultSet.get(rs);
assertTrue(rs == v.getObject());
v = ValueResultSet.getCopy(rs, 2);
assertEquals(0, v.hashCode());
assertEquals(Integer.MAX_VALUE, v.getDisplaySize());
assertEquals(Integer.MAX_VALUE, v.getPrecision());
assertEquals(0, v.getScale());
assertEquals("", v.getSQL());
assertEquals(Value.RESULT_SET, v.getType());
assertEquals("((1, Hello), (2, World))", v.getString());
rs.beforeFirst();
ValueResultSet v2 = ValueResultSet.getCopy(rs, 2);
assertTrue(v.equals(v));
assertFalse(v.equals(v2));
rs.beforeFirst();
ResultSet rs2 = v.getResultSet();
rs2.next();
rs.next();
assertEquals(rs.getInt(1), rs2.getInt(1));
assertEquals(rs.getString(2), rs2.getString(2));
rs2.next();
rs.next();
assertEquals(rs.getInt(1), rs2.getInt(1));
assertEquals(rs.getString(2), rs2.getString(2));
assertFalse(rs2.next());
assertTrue(rs.next());
}