1
2
3 /*
4 ** requesttype 0 == Returns the mdinfo:MDAVERSION and mdinfo:MDARELEASEID rows.
5 ** requesttype 1 == JDBC
6 ** requesttype 2 == JDBC - but only send back the minimal frequently used info.
7 **
8 ** mdaversion
9 */
10 create procedure sp_ijdbc_mda(@requesttype int, @requestversion int, @clientversion int = 0) as
11 begin
12
13 declare @min_mdaversion int, @max_mdaversion int
14 declare @mda_version int
15 declare @srv_version int
16 declare @mdaver_querytype tinyint
17 declare @mdaver_query varchar(255)
18
19 select @min_mdaversion = 1
20 select @max_mdaversion = 7
21 select @mda_version = @requestversion
22 /* get the Server version */
23 select @srv_version = convert(int, value) from master.dbo.sysconfigures
24 where config = 122
25 if @@trancount = 0
26 begin
27 set chained off
28 end
29
30 set transaction isolation level 1
31
32 /*
33 ** if the client is requesting a version too old
34 ** then we return our lowest version supported
35 **
36 ** the client needs to be able to just handle this
37 */
38 if (@requestversion < @min_mdaversion)
39 begin
40 select @mda_version = @min_mdaversion
41 end
42
43 /*
44 ** if the client is requesting a version too new
45 ** we will return our highest version available
46 */
47 if (@mda_version > @max_mdaversion)
48 begin
49 select @mda_version = @max_mdaversion
50 end
51
52 /*
53 ** if the client's requested version is between 1 and 3,
54 ** then the mda version returned needs to be 1. The reason
55 ** for this is the jConnect driver would pass in it's own
56 ** major version number as the @requestversion. We need to
57 ** keep older version's of the driver working ok since
58 ** they expect a '1' to be returned.
59 */
60 if (@mda_version < 4)
61 begin
62 select @mda_version = 1
63 select @mdaver_querytype = 2
64 select @mdaver_query = 'select 1'
65 end
66 else
67 begin
68 select @mdaver_querytype = 5
69 select @mdaver_query = convert(varchar(255), @mda_version)
70 end
71
72 /*
73 ** process the @requesttype
74 */
75 if (@requesttype = 0)
76 begin
77 select "mdinfo" = convert(varchar(30), 'MDAVERSION'),
78 "querytype" = @mdaver_querytype,
79 "pre_query" = '',
80 "query" = @mdaver_query,
81 "post_query" = ''
82 union
83 select mdinfo, querytype, isnull(pre_query, ''), query,
84 isnull(post_query, '')
85 from master..spt_ijdbc_mda
86 where mdinfo in (
87 'MDARELEASEID'
88 )
89 end
90 else if (@requesttype = 1)
91 begin
92 select "mdinfo" = convert(varchar(30), 'MDAVERSION'),
93 "querytype" = @mdaver_querytype,
94 "pre_query" = '',
95 "query" = @mdaver_query,
96 "post_query" = ''
97 union
98 select mdinfo, querytype, isnull(pre_query, ''), query,
99 isnull(post_query, '')
100 from master..spt_ijdbc_mda
101 where @mda_version >= mdaver_start
102 and @mda_version <= mdaver_end
103 and ((@srv_version >= srvver_start)
104 and (@srv_version < srvver_end
105 or srvver_end = - 1))
106 end
107 else if (@requesttype = 2)
108 begin
109 select "mdinfo" = convert(varchar(30), 'MDAVERSION'),
110 "querytype" = @mdaver_querytype,
111 "pre_query" = '',
112 "query" = @mdaver_query,
113 "post_query" = ''
114 union
115 select mdinfo, querytype, isnull(pre_query, ''), query,
116 isnull(post_query, '')
117 from master..spt_ijdbc_mda
118 where mdinfo in (
119 'CONNECTCONFIG',
120 'SET_CATALOG',
121 'SET_AUTOCOMMIT_ON',
122 'SET_AUTOCOMMIT_OFF',
123 'SET_ISOLATION',
124 'SET_ROWCOUNT',
125 'DEFAULT_CHARSET'
126 )
127 and @mda_version >= mdaver_start
128 and @mda_version <= mdaver_end
129 and ((@srv_version >= srvver_start)
130 and (@srv_version < srvver_end
131 or srvver_end = - 1))
132 end
133 end
134
exec sp_procxmode 'sp_ijdbc_mda', 'AnyMode'
go
Grant Execute on sp_ijdbc_mda to public
go
