@Override
public String visitLiteral(RexLiteral rexLiteral) {
Object v = rexLiteral.getValue();
RelDataType ty = rexLiteral.getType();
switch (rexLiteral.getTypeName()) {
case BOOLEAN:
return v.toString();
case CHAR:
return CompilerUtil.escapeJavaString(((NlsString) v).getValue(), true);
case NULL:
return "((" + ((Class<?>) typeFactory.getJavaClass(ty)).getCanonicalName() + ")null)";
case DOUBLE:
case BIGINT:
case DECIMAL:
switch (ty.getSqlTypeName()) {
case TINYINT:
case SMALLINT:
case INTEGER:
return Long.toString(((BigDecimal) v).longValueExact());
case BIGINT:
return Long.toString(((BigDecimal) v).longValueExact()) + 'L';
case DECIMAL:
case FLOAT:
case REAL:
case DOUBLE:
return Util.toScientificNotation((BigDecimal) v);
}
break;
default:
throw new UnsupportedOperationException();
}
return null;
}
