public void unparse(SqlWriter writer, int leftPrec, int rightPrec) {
switch (typeName) {
case BOOLEAN:
writer.keyword(value == null ? "UNKNOWN" : (Boolean) value ? "TRUE" : "FALSE");
break;
case NULL:
writer.keyword("NULL");
break;
case CHAR:
case DECIMAL:
case DOUBLE:
case BINARY:
// should be handled in subtype
throw Util.unexpected(typeName);
case SYMBOL:
if (value instanceof Enum) {
Enum enumVal = (Enum) value;
writer.keyword(enumVal.toString());
} else {
writer.keyword(String.valueOf(value));
}
break;
default:
writer.literal(value.toString());
}
}
@Override
public void unparse(SqlWriter writer, SqlCall call, int leftPrec, int rightPrec) {
super.unparse(writer, call, leftPrec, rightPrec);
if (withOrdinality) {
writer.keyword("WITH ORDINALITY");
}
}
public void unparse(
SqlWriter writer, SqlOperator operator, SqlCall call, int leftPrec, int rightPrec) {
assert call.operandCount() == 1;
call.operand(0).unparse(writer, operator.getLeftPrec(), operator.getRightPrec());
writer.keyword(operator.getName());
}