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	Information Service User's Guide

Appendix D

Mapping between OKS and IS types

"Table L.1" shows mapping between OKS and IS attribute types. The second and third columns represent all the types supported by the C++ and Java IS libraries for the information attributes definition. An information attributes can be declared as variable of one of these types or as an array of one of them.

**Table L.1** Mapping between types of the OKS attributes and IS attributes for C++ and Java programming languages.
OKS Attribute type	C++ IS attribute type	Java IS attribute type
bool	bool	boolean
s8	char	byte
u8	unsigned char	byte
s16	short	short
u16	unsigned short	short
s32	long	int
u32	unsigned long	int
float	float	float
double	double	double
date	OWLDate1	java.sql.Data
time	OWLTime2	java.sql.Time
string	string	java.lang.String
enum	enum	int

For the multi-value attributes the C++ generated code uses either std::vector of corresponding type or C like array of that type. This can be chosen using the command line parameters of the IS generator application. The Java generated code uses the plain Java arrays for the multi-value attributes.

1. OWLDate class is implemented by the OWL component of the Online Software. Documentation can be found in [12].

2. OWLTime class is implemented by the OWL component of the Online Software. Documentation can be found in [12].

2 July 1998 - WebMaster