X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=doc%2Fasn.xml;h=bb84b528260101bf189fbd722ac0062535e331dd;hb=bf95c509245f5cb4025ef2db348d5f7ace3b5994;hp=3420e635f34c8eda20168c6d8e2b085abbf20bbe;hpb=757c8c0ffb82023c9059d9a5997515f65ad68561;p=yaz-moved-to-github.git diff --git a/doc/asn.xml b/doc/asn.xml index 3420e63..bb84b52 100644 --- a/doc/asn.xml +++ b/doc/asn.xml @@ -1,4 +1,3 @@ - The Z39.50 ASN.1 Module Introduction @@ -132,68 +131,6 @@ - Object Identifiers - - When you refer to object identifiers in your application, you need to - be aware that SR and Z39.50 use two different set of OIDs to refer to - the same objects. To handle this easily, &yaz; provides a utility module - to &asn; which provides an internal representation of the OIDs used in - both protocols. Each oid is described by a structure: - - - -typedef struct oident -{ - enum oid_proto proto; - enum oid_class class; - enum oid_value value; - int oidsuffix[OID_SIZE]; - char *desc; -} oident; - - - - The proto field can be set to either - PROTO_SR or PROTO_Z3950. - The class might be, say, - CLASS_RECSYN, and the value might be - VAL_USMARC for the USMARC record format. Functions - - - -int *oid_ent_to_oid(struct oident *ent, int *dst); -struct oident *oid_getentbyoid(int *o); - - - - are provided to map between object identifiers and database entries. - If you store a member of the oid_proto type in - your association state information, it's a simple matter, at runtime, - to generate the correct OID when you need it. For decoding, you can - simply ignore the proto field, or if you're strict, you can verify - that your peer is using the OID family from the correct protocol. - The desc field is a short, human-readable name - for the PDU, useful mainly for diagnostic output. - - - - - The old function oid_getoidbyent still exists but - is not thread safe. Use oid_ent_to_oid instead - and pass an array of size OID_SIZE. - - - - - - Plans are underway to merge the two protocols into a single - definition, with one set of object identifiers. When this happens, the - oid module will no longer be required to support protocol - independence, but it should still be useful as a simple OID database. - - - - EXTERNAL Data @@ -271,7 +208,7 @@ typedef struct Z_External - Z_ext_typeent *z_ext_gettypebyref(oid_value ref); + Z_ext_typeent *z_ext_gettypebyref(const oid *oid); @@ -285,7 +222,7 @@ typedef struct Z_External typedef struct Z_ext_typeent { - oid_value dref; /* the direct-reference OID value. */ + int oid[OID_SIZE]; /* the direct-reference OID. */ int what; /* discriminator value for the external CHOICE */ Odr_fun fun; /* decoder function */ } Z_ext_typeent;