private static String isSpecial(TSourceToken token, EDbVendor targetVendor)
throws SpecialIdentifierException {
if (token.toString().equalsIgnoreCase("DUAL") && token.getDbvendor() == EDbVendor.dbvoracle) {
switch (targetVendor) {
case dbvmssql:
throw new SpecialIdentifierException(
"Dual is a table that is created by Oracle together with data dictionary. There is no DUAL table in SQL Server.");
default:
throw new SpecialIdentifierException(
"Dual is a table that is created by Oracle together with data dictionary.");
}
}
return null;
}
private static boolean isAliasToken(TSourceToken token) {
int dbObjType = token.getDbObjType();
if (dbObjType != TObjectName.ttobjColumnAlias
&& dbObjType != TObjectName.ttObjTableAlias
&& dbObjType != TObjectName.ttobjAliasName) {
return false;
}
return true;
}
private static String isFunction(TSourceToken token, EDbVendor targetVendor)
throws FunctionIdentifierException {
if (token.toString().equalsIgnoreCase("CURRENT_DATE")
&& token.getDbvendor() == EDbVendor.dbvoracle) {
switch (targetVendor) {
case dbvmssql:
return "SYSDATETIME()";
}
throw new FunctionIdentifierException();
}
if (token.toString().equalsIgnoreCase("LOCALTIMESTAMP")
&& token.getDbvendor() == EDbVendor.dbvoracle) {
switch (targetVendor) {
case dbvmssql:
return "SYSDATETIME()";
}
throw new FunctionIdentifierException();
}
if (token.toString().equalsIgnoreCase("SYSTIMESTAMP")
&& token.getDbvendor() == EDbVendor.dbvoracle) {
switch (targetVendor) {
case dbvmssql:
return "SYSDATETIMEOFFSET()";
}
throw new FunctionIdentifierException();
}
return null;
}