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$ F( l* n, E3 N5 ?, ?. P- Visual LISP中使用ADO接口与MS-Access相连接
' h3 C" _8 P0 J' C/ Z( i - 在Visual LISP中使用Microsoft ActiveX Data Objects (ADO)接口与MS-Access和" w" U! u9 G" l, O" r& t' y* h. y
- SQL Server相连接的例子。; I" [, _6 M/ s5 X
- , K' |- F2 V: c' M8 {
- 通过类型库初始化ADO接口方法:5 M, J2 p3 K+ c# J; Z5 j. h/ Y& A
- + o$ c; w( @" d) N1 U% s
- (defun DbInitADO ( / ADO_DLLPath); W4 P( Y% g, \% n
- (if (null adom-Append)
I0 f0 R) \2 Z% `4 M, |) r - (progn
. a# z% B9 G0 M0 ]0 J, H3 ^
5 b' g- h1 L# B5 Z H& U) X- ;; 尽管你可以把绝对路径输入到这里,但利用系统查找到的系统' O/ l7 K) x- W ]! _" g
- ;; 文件夹将会更加合理,可以避免不必要的错误。
4 _- Z0 H/ x& G& z" I. ?& o+ {, t
- @ [. _: ?2 K+ ?7 n8 s+ m4 R- (setq ADO_DLLPath: U! W! E2 B' a& M( B8 k
- (strcat (getenv "systemdrive")( _; l) U7 u2 a, T0 a9 W
- "\\Program Files\\Common Files\\System\\Ado\")
4 R) E! w( ^) k - )
! q7 D6 o/ w! |; h) L" o" K
/ L4 {! ~' T8 t# {- T- ;; 如果查找到类型库 ...$ b% j5 {# d* h
- " P, c8 ~$ Z; T' R9 X# O' v2 }7 Y
- (if (findfile (strcat ADO_DLLPath "msado15.dll"))
0 I+ a# B& `* M2 T& O
& ^, x/ K _$ N4 M- ;; 将其输入
8 R/ j# d! U5 C6 ^2 c; }) W
0 T) |' R; J$ i/ V8 @& Z- (vlax-Import-Type-Library. B& i( |& U) B4 y' Z; y
- :tlb-filename (strcat ADO_DLLPath "msado15.dll")( _8 N+ [. Z) N: ]2 R
- :methods-prefix"adom-"
# E8 B% z, O# @, B; N, \3 K j' G5 B - roperties-prefix "adop-"& I1 c+ }6 f* v+ w1 I
- :constants-prefix"adok-"; K5 d0 i5 S* u' o/ l5 g
- )2 {$ Z. y5 o! M4 c' Z6 V" ~
- ;; 找不到时,则通知操作者* M# G7 N$ _( |5 S8 {
- (alert (strcat "不能找到以下文件\n" ADO_DLLPath "msado15.dll"))9 U6 E- t. j! p. @
- )3 {, M/ `$ N' Q
- )
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: W1 `* r7 }% ~6 V- 生成MS-Access 或 MS-SQL Server 数据库的连接字符串5 z$ ]: Q: z# Y
/ \# U9 O$ b- F, ?9 U- ;;;******************************************************************% [9 U+ M" d2 r8 U) b6 u
- ;;; 使用ODBC(不需要DSN)连接MS-Access数据库
, T6 ?8 d+ h1 f* I - ;;; 示例: (DbConnect_MSAccess1 "d:/dbfiles/products.mdb")
8 j- v8 |0 k& [% Y2 ~6 `0 b - ;;;******************************************************************
7 u) ]' [# @& j$ R- Q- ?1 \0 ? - ) ?2 j# G7 W# q6 X& \
- (defun DbConnect_MSAccess1 (dbFile): P+ N, b- O$ E* I
- (strcat
; m2 n `9 M4 N - "Provider=MSDASQL;"
/ m; D1 d1 ?) y - "Driver={Microsoft Access Driver (*.mdb)};"8 L$ a; B0 @+ ? u
- "DBQ=" dbFile
2 E1 O @4 ?( G2 u - )- o, I# _& Z) B4 D% F
- )
) P$ ^+ Y* N0 i - 0 {; U0 a0 y, ~7 j- W
- ;;;******************************************************************* O6 t$ J: ?+ |
- ;;; 使用JET 3.51连接MS-Access数据库$ N5 P; J5 L" S/ X3 A& T
- ;;; 示例: (DbConnect_MSAccess2 "d:/dbfiles/products.mdb")
& J! m; W+ C/ y1 u9 ?* W - ;;;******************************************************************
' }, Y* h& L6 x( V) q
. _3 F- @7 Y4 T) g6 A/ b, A- (defun DbConnect_MSAccess2 (dbFile)
9 C' t ~6 X5 R9 r: L - (strcat
7 o' s& L' V7 u z/ s9 S- M: W2 i6 w - "Provider=Microsoft.Jet.OLEDB.3.51;"
% A8 E/ L9 S6 e `0 H - "Data Source=" dbFile
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- )' ?+ e% Q. N9 C4 D4 W
7 o; w8 y/ d2 A$ s% i- ;;;******************************************************************
7 x0 T- O' H) a2 V, {3 h - ;;; 使用ODBC(不需要DSN)连接MS-SQL数据库
' o% Q! J: O; t9 }, R - ;;; 示例: (DbConnect_MSSQL1 "SQLSERVER1" "products" "sa" "")% ^" q+ X- i7 r1 l2 w/ ~9 G
- ;;;******************************************************************
( |% R3 S; E" N0 b - , V3 n* f) a* ~- x( Z
- (defun DbConnect_MSSQL1 (dbServer dbName dbUser dbPassword)' h3 [6 W* l# E; ~" q, N
- (strcat& O& a1 ]5 }; v' v' J1 V
- "Provider=SQLOLEDB;"7 `- L# X9 e* b
- "Driver={SQL Server};"
Y/ o2 o) P$ ?, L- N/ u - "Server=" dbServer ";"# p' s. q8 E( k" b+ f a
- "Database=" dbName ";"
m* p) c. i/ C- r - "UID=" dbUser ";"4 }! X% h1 I# R1 l
- "PWD=" dbPassword4 I, j# n. k) Y2 X
- )
$ i' q* e; s# P4 A$ | - ); l; A V( w6 Z; f3 _8 m9 [7 p
% B: c% }5 [$ l8 P2 p- ;;;******************************************************************
) F8 K- y; h( \. u! ` - ;;; 使用ODBC连接MS-SQL数据库w/o4 b5 j1 r1 R& B; R, x
- ;;; Ex. (DbConnect_MSSQL2 "SQLSERVER2" "pr_catalog1" "sa" "")$ F! g! m* a% Q4 ?
- ;;;******************************************************************
5 S# P q h+ ?: D5 w, o - ! M; }4 L- J- S# M: ?
- (defun DbConnect_MSSQL2 (dbServer dbCatalog dbUser dbPassword)
: p& Q) v" u" z8 J! R1 N5 G - (strcat
+ b; C! _! Q+ c' i# S. t - "Provider=SQLOLEDB;"
- g$ K2 L w/ i5 R' z8 i - "Data Source=" dbServer ";"0 a6 M) ]( _' d- B
- "Initial Catalog=" dbCatalog ";"
) [+ [8 v/ r* l - "User ID=" dbUser ";"
$ q. }" |+ }4 H$ K/ G+ k7 ?& o - "Password=" dbPassword! E& T3 [- `4 h) r q. ^- I g
- )! E' f/ G0 r+ S, M l8 m+ e
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6 p4 `) l. t( G; U& h
% n( J6 Q {' M# e0 V/ K( |- 生成适合不同情况的SQL字符串8 L, @/ i7 ~& X- B( B+ w* s
- (colName和Value可以为'nil或有值。如果Value为REAL、INT或STR,它可以计算到适" R& }% ]6 W d$ {( {$ p* b8 c
- 当的值中来取得正确的查询语法7 r$ v+ [; v& A
# g8 R# v5 r3 m6 ]+ B/ I3 q- (defun DbSQLCommand (tblName colName Value)% ~% V8 s. x( O9 x! z2 _" x8 i" A
- (cond5 f' m! J! S4 G7 G
- ( (and colName value (= (type value) 'STR))
# r; r# N* b4 j% m1 D1 ? - (strcat "SELECT * FROM " tblName " WHERE " colName " = '" Value "'")
( k6 c" ~6 A9 X5 D% g - )& I8 h0 \/ N, S3 ]7 c% g) U
- ( (and colName value (= (type value) 'INT))0 d4 B* d0 Z& |( p
- (strcat "SELECT * FROM " tblName " WHERE " colName " = " (itoa, P* q2 d7 h1 ~6 _: U' U1 L, A; h
- Value) )2 U7 d/ t$ c0 j4 Z! ?* c
- )( w& ~; d" B2 V
- ( (and colName value (= (type value) 'REAL))& n% ~3 ~1 O8 o# }- \* f' X X- y
- (strcat "SELECT * FROM " tblName " WHERE " colName " = " (itoa (fix
9 D I6 `+ m) d3 }1 t! Q! ] - Value)) )
' W9 k* x8 W- U5 G7 q8 e3 ^ - )
P' l0 R% t' C0 X8 s8 ] - ( T (strcat "SELECT * FROM " tblName ) )6 n2 \' k0 f0 K
- ); cond
6 h* y$ D; ^& ] - )
/ I) [& f# M2 z) r K: e+ o - 8 W% A k( T" [0 u; F; x5 H
- ; K) Z5 `& O7 T: B Y( S
- 从内存中释放VLA对象- }* q# ~3 V7 B* b {$ {$ n7 w2 }
- ( I6 \( G$ n) p9 x. r- Y" {
- (defun MxRelease (xObject)
$ w( w5 D( q% l q9 w - (if (not (vlax-object-release-p xObject))
/ j7 h+ k( _5 F/ B9 V - (vlax-Release-Object xObject)$ Y: w8 p a! ?3 w
- )" a; C* z8 p, G' x) V8 Y
- )
# ?( x2 Q& z* k5 g# c! E - 4 E: Y7 }, \" U" t
- 关闭ADO Connection 对象并将内存释放出来6 b- R3 Q: k" Y ^" I6 ~
- / ?/ O, p8 |: L' m3 h6 b! `+ X3 r
- (defun DbCloseConnection (dbConnObject)
& n$ ^# t: m0 T b( l' K; K - (vlax-Invoke-Method dbConnObject "Close")
: L) E% R* [% @; ~: w; `9 D - (MxRelease dbConnObject)7 O& c5 b+ q$ n" R0 z* s% m7 T
- )
% Y* J: d0 Q/ J
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/ a8 p+ d3 R4 {7 Q+ R- 9 C+ T5 y0 M/ I5 s: z7 V
- 关闭ADO RecordSet对象并将内存释放出来# v% s0 `4 L F z
- ' g) P# f! _; t
- (defun DbCloseRecordset (rsObject)' Y; _6 V; n7 H
- (vlax-Invoke-Method rsObject "Close")
4 {& z# b$ }! }" R - (MxRelease rsObject)
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- 1 k: ^, {! ]: J
1 e2 }0 p& `. H, r1 L }" S8 n- 9 U5 F! |2 r' P# D. C
- 布尔测试RecordSet 是否为 Closed (T 或 nil)5 T) @8 j0 ~9 ?' ]
- 1 l6 a- A! ?- I* w% m5 m
- (defun DbRsIsClosed (rsObject)
- e( D0 F! O' i v' C, q - (= adok-adStateClosed (vlax-Get-Property rsObject "State"))9 q2 j. U" R0 F8 u1 O0 Z
- )
6 Y, e7 I+ |) E+ _6 ~4 w* q; J - 7 A& @2 H& R& O3 y3 Z5 z1 `, K
3 f" @2 Y- H: L; r- 返回一个ADO RecordSet对象中的记录数' U- E& ]8 q6 f+ C
7 `! l0 G" d" w1 y. w) X8 r- (defun DbRsCount (rsObject)# W+ t% t( }0 \( | j
- (vlax-Get-Property rsObject "RecordCount")) h% U% C0 g# ?' M% _ Z; g; j1 W
- ); F2 V/ k& }) M2 I) @! n4 U. u2 f
- 0 g) {. S0 i0 e' _
- 4 R4 N4 [) P( Q7 g+ n' X; h
- 返回Field对象中给定字段数的字段名称) j0 `# s0 p0 Z% p% Q
) A* s2 ?! F6 m- (defun DbGetFields (fObject fCount / FieldNumber); ~( Y, n7 i$ {. v: D
- (setq FieldNumber -1); Y% O1 o6 P8 p) i4 i9 V
- 0 l2 @ f& C% C/ I. E
- (while (> fCount (setq FieldNumber (1+ FieldNumber)))
5 O' o5 W7 d' t - (setq FieldList
/ `& e1 L+ a5 A. m& c" F, ^$ [* E - (cons' e$ Y4 G6 g& I. `% f% z7 C
- (vlax-Get-Property
+ p5 T2 r' y0 v1 M1 ^- B - (DbRsFieldItem FieldsObject FieldNumber) "Name" ^3 J3 i* Q" H0 N& x: S
- )2 R: l7 m) g5 Z2 y& y
- FieldList% F$ j' }& k y; X
- )1 d7 _( i) ^% o* E# m" \* N
- ); setq
7 e, c# F9 M! l% A' k7 f" e" H - ); end while; D; {3 d. R( Z0 K2 r, g
- ); defun
+ h* Z0 h* l- _* U - 7 ~& j" p2 p1 f9 f$ p
|2 T6 V" D" G3 K: X% ], ^- 从RecordSet对象返回ADO Field对象
8 k. W4 R+ Q6 H' C* ]- F - 2 K8 ^, M5 x( a9 g
- (defun DbRsFields (rsObject)
5 i; _6 @& l$ o f6 r* L! k( Q" b6 x - (vlax-Get-Property rsObject "Fields")
! k* t5 }( ^. S% r6 L- a6 N - )
6 c9 U3 H" A ^ }( Z3 |+ R { - ( C2 _: i; ?& _, G/ o6 c9 Q. s b
) f* ?" `( s8 w! j2 `" F7 b- 返回给定Field对象的字段数量9 D9 x& ]- g2 R8 {8 _5 h7 t) p
" ^, L$ i, }6 b& s% H! A- (defun DbRsFieldCount (fObject)
+ ^! `) d0 i! ^4 ?- F1 C5 F - (vlax-Get-Property fObject "Count")5 U1 H' ]6 ~; ^- y; x: v6 s6 y
- )7 v. ?6 x- W# R
9 j" P& b8 ^/ g0 ?* P
" f! ^2 A* b7 P- 获取Field对象的字段名(项) n8 j3 u5 F( g4 n4 B' i: o
- 6 |1 [+ b; L$ D: {: T( i
- (defun DbRsFieldItem (fObject fNumber)8 u/ r" W0 Q" q5 e, h
- (vlax-Get-Property fObject "Item" fNumber)
" s$ }2 l0 k: H, }& c4 C - )
; Q, j# P5 g& ^2 y1 P Q
+ R' r0 |5 A" n3 `$ Z. M. }- 8 r1 |# m2 U- z; ^/ f8 \6 I
- 返回RecordSet对象的RowSet对象
$ e3 E, v% n Z, c0 p/ Y
) v+ o+ m! e! }: V- (defun DbRsGetRows (rsObject)* j8 s0 @) h+ p" _, E h& B
- (vlax-Invoke-Method rsObject "GetRows" adok-adGetRowsRest): e4 t( V! y- O# }5 a5 m! L# t
- )! q4 S' j3 a' X$ ]
) q. k" `1 X$ p( O! j
# s% A8 W# [3 @/ z* [' N* B- 应用一个ADO光标类型到给定的RecordSet对象
7 V/ a) f8 V% U m8 z$ W9 }. K( O; j8 q - # l: R; }1 f+ S1 F
- (defun DbRsCursorType (rsObject curType)
, i7 m! @2 @! k% s2 F - (cond6 b( ]* r( K8 a) F! t1 @6 |
- ( (= (strcase curType) "KEYSET")" M( ?$ {; m; `) V w& x# {- i
- (vlax-Put-Property rsObject "CursorType" adok-adOpenKeyset)1 H# z M5 m( Q: M* }6 x
- )
b3 c8 Z0 Y: ~$ y" m - ( (= (strcase curType) "DYNAMIC")" t4 O0 s) x4 f/ L4 H2 T: ^7 ~6 q: p
- (vlax-Put-Property rsObject "CursorType" adok-adOpenDynamic)3 g! }- K/ I* F4 e# t9 D w
- )) E# T3 `2 G: x& p3 @7 @5 B% T
- )
- i, K4 |) }0 A1 s* u6 p - )$ _, I& e7 B& {4 q# U1 L0 b
- ( {. t. { i0 Z6 W# H; j: w9 A
- + N9 B; A) `6 ^
- 应用一个ADO LOCK(锁定)类型到给定的RecordSet对象
& t7 o1 G- D" P$ r3 d5 S6 B - 5 Q4 M+ _' O9 U2 v4 ]" D
- (defun DbRsLockType (rsObject lockType)' _& ?& y7 i9 h' ?
- (cond
# r7 I) ^( q0 s$ S# }! i$ Y$ {7 N7 w - ( (= (strcase lockType) "OPTIMISTIC")# p, \# T- m1 o$ N0 s* S8 q
- (vlax-Put-Property rsObject "LockType" adok-adLockOptimistic)
6 O# g/ X, }! ^ - )
: B" U y& W, w$ Q3 m - ( (= (strcase lockType) "BATCHOPTIMISTIC")& @+ N, K% l/ z0 I! E1 i; C
- (vlax-Put-Property rsObject "LockType" adok-adLockBatchOptimistic)0 Z; F0 O$ P7 p) T
- )
+ ~) s/ P: M( L7 r( p: W - ( (= (strcase lockType) "READONLY")
2 ~/ c* G5 h4 ^) e! g - (vlax-Put-Property rsObject "LockType" adok-adLockReadOnly)' [3 V3 n' D8 \
- )+ T0 w3 Z$ M) y
- )
; O1 c9 F' X9 @$ |# H - )
# P( I4 T; ?' c - ( U" m" F" Y( k7 c7 f' _
- 8 d( E. j4 S5 u0 G a
- 创建并返回ADO Connection对象- _: M1 ~3 T3 \2 y: [
" l! x' w, D9 k# [ ]3 a% Y- (defun DbConnection ()! @- B# F. q: |1 v3 R
- (vlax-Create-Object "ADODB.Connection")3 @6 c2 S1 b8 B! {
- )
% g3 a) s6 L& T2 _; c: B1 A& |6 Q
1 Z/ _2 g. T0 I6 p; c, Z7 H- $ z, r! E$ b, {* [
- 创建并返回ADO RecordSet对象 n1 ?. U5 k0 ^& u
- & t3 K% y9 {+ K9 W6 a( }
- (defun DbRecordSet ()0 ?/ K) b2 ?, z, |' f
- (vlax-Create-Object "ADODB.RecordSet")
* ^8 u! \! e- k4 z: h - )
6 j: ~4 e& u6 T }+ U - ) B7 z% Z+ R! ~0 i1 |4 z% l
, g0 W8 L" o9 L- 将所有出错收集到一个点对形式("name" . "value")的列表中的函数# ^6 C0 b2 R2 }' {/ F. V* i# L
- 5 z8 Q& s2 H0 S& G6 v9 E, B, x5 C+ W
- (defun ErrorProcessor' @1 j( ~/ R3 C5 V
- (VLErrorObject ConnectionObject / ErrorsObject
" Z- k' d$ `! v' V! q' D, H' A - ErrorObject ErrorCount ErrorNumber ErrorList
5 W) V: r* @/ w A# @& w3 k - ErrorValue
, x1 V* F" k5 Z9 ~+ } - )
2 A9 l' z0 i- D2 c! J! N
/ F) h2 Q! q/ [3 I- d! g/ f' f. |- ;; 每一步获取Visual LISP的出错信息! f: {( e6 l. i8 H5 Q- e# [
- ' g# c# G, t$ ]) h3 n, J# [5 N+ ~
- (setq ReturnList) [" [0 j6 u# H
- (list2 w7 ]7 {+ h+ X8 D+ V
- (list
8 R5 M; o1 v1 t& V# Q - (cons "Visual LISP message"1 O& x4 [8 i( v
- (vl-Catch-All-Error-Message VLErrorObject); h- o' {/ Z+ Q' ^ W+ U" o
- )
! R8 h5 ~' {! ^! k - ); @6 _' }; w" J. }) b
- )6 r* _) z; h" J) s5 y/ U/ Z
- ;; 获取ADO出错对象及数量
+ K/ S b! R3 k9 |
- Z' t; T+ I* p- ErrorObject(vlax-Create-object "ADODB.Error")
- ?0 [0 R7 k( D5 z; H! M8 }3 v - ErrorsObject(vlax-Get-Property ConnectionObject "Errors")
. a4 H* \# k o, T+ t - ErrorCount (vlax-Get-Property ErrorsObject "Count")
3 R/ a9 |5 U* t9 m) U; R - ErrorNumber -1
3 c) K* E% V0 k Q8 t; v4 W - )1 g' k Y' y+ R: I, t# h- H
- ; N6 S y" P5 V* h* Q
- ;; 循环所有ADO错误 ...
3 ?* T" E* o4 }( i6 V - (while (< (setq ErrorNumber (1+ ErrorNumber)) ErrorCount)
: n0 q) |$ H0 @$ ^; f
! [. J$ X) c# }4 Q! d$ x- ;; 获取当前出错的出错对象% s0 j* k& F* K; u& [3 n5 j1 ~
- (setq ErrorObject (vlax-Get-Property ErrorsObject "Item"
4 M9 _$ d; b4 i! K8 B/ s - ErrorNumber)$ H# o, x# R, y
- ErrorList nil ;; 清除该出错的列表项
+ t( }: c5 h) \5 { - )
5 x! ?) x" m7 R- G% K$ G% O
C, a0 O8 I9 B4 b: U" R$ B6 `/ r/ T- ;; 循环该出错的所有可能的出错项
& N/ q" d; F% Q- O - (foreach ErrorProperty9 S) E' _* Z( K% T! K$ J
- '("Description" "HelpContext" "HelpFile"7 i; U2 U! e: P5 D1 c# U$ t
- "NativeError" "Number" "SQLState" "Source"8 a* C) g5 m; y9 w
- ): h! m- j) E2 |' p
- ;; 获取当前项的值。如果为数字 ...2 R9 _, m- [! X4 O1 D) L
- (if K& R F A5 @+ Y% C) H7 ~) `
- (numberp
6 ]: x6 z8 c6 J4 D. q3 b - (setq ErrorValue
7 k" r7 a/ ^/ ]) `6 g- N6 W - (vlax-Get-Property ErrorObject ErrorProperty)
8 s, ?6 Y( h) n# K8 z - ))) O( h5 r' U, M
- ;; 则将其转换为字符串以便与其它一致
: v3 v$ y8 O' Z" ~* E0 v4 S - (setq ErrorValue (itoa ErrorValue))4 N; ]& C# h$ L4 M" f+ _5 N
- )
2 J {, ]# k& E( M2 A/ h - ;; 同时保存起来
* W$ c6 ?8 [, \7 q: @9 g# G - (setq ErrorList (cons (cons ErrorProperty ErrorValue) ErrorList))
: W& S8 d/ l" D( _ - ); end foreach
; y) V8 |' u+ Q - 2 H% u) a" D# s5 H6 ~5 W8 a& H7 Y
- ;; 添加当前出错列表到返回值中
9 I$ L/ i& Q7 h- O1 f - (setq ReturnList (cons (reverse ErrorList) ReturnList))% ~: x. \7 n2 Y
- ); end while7 n: Y5 f2 E8 y% f* k2 ]
- ( w; K( B3 E/ g7 H
- ;; 将返回值设置为正确的顺序
9 ~( E! `* V6 p+ ]) b - (reverse ReturnList)$ g h) C. ~6 _# r# f
- 4 o* E9 d' b4 k* q4 {
- ); defun7 p( k/ s5 w6 Q; }" R- V
- 5 {; l6 _$ O% b3 m7 Y \/ `
7 M. W, o$ w3 O3 n4 q2 d9 I) A( E/ M- 显示由ErrorProcessor函数生成的出错列表的函数。该函数与ErrorProcessor函数分开是+ u7 E1 H) S9 Y% \: [) ?, ^2 n9 D% O$ R
- 为了ErrorProcessor函数可以在DCL对话框显示时被调用,然后ErrorPrinter可以在对话
0 C7 k! `; N) V0 j N+ h - 框结束后被调用。6 ~4 R- d7 O6 ^5 d$ t
- * {/ l/ X2 I( V' k8 K7 |+ ^. B' u
- (defun ErrorPrinter (ErrorsList)
4 n6 H1 g7 {8 {. d0 u8 u4 c1 p - (foreach ErrorList ErrorsList7 b! p2 p: L5 r, s" _& G
- (prompt "\n")
# f$ d: J+ d7 f - (foreach ErrorItem ErrorList
; {! F4 z4 O7 l8 j% h+ J. E - (prompt (strcat (car ErrorItem) "\t\t" (cdr ErrorItem) "\n") )3 y/ k/ E4 p- s$ S
- )9 y; E% K% C0 w/ s1 z& z
- )
y7 V+ E, Q( W) n5 f - (prin1)
& R# T, P% s* _0 o( u8 R - )
" @( T ]9 r0 A8 o+ K4 X - 5 b- T, J' I6 Y
0 E2 C; l( ~: U5 r) M- 以下为使用ADO的完整例子: ]1 x0 M2 o4 h t
9 i) ^- ~8 Q9 I" Q% \5 ?- F+ g- ;;;******************************************************************7 Q' A( m- g4 `
- ;;; 从Access数据库文件(dbFile)的表(tblName)中清理掉列(colName)值为给定的
3 ~0 y1 o- J" \) \" u! P S# d - ;;; (value)值的表记录
( d% E7 X6 o( }7 d0 q" k, G - ;;;******************************************************************3 z2 ]0 ?, F i0 t1 K
- [, u) v1 Z- `+ ~
- (defun DbTableDump
( s5 I+ O3 D# D3 A1 `2 T - (dbFile tblName colName value / SQLStatement ConnectString)
4 Y5 v2 J" B, C - & B3 }! x0 V @8 ^. ]
- (setq ConnectString (DbConnect_MSAccess1 dbFile)0 I1 m3 O8 R" \
- SQLStatement (DbSQLCommand tblName colName value)3 I0 F8 x& v Q2 M, @; M% Z
- ); setq: g9 a- y" c- [8 k: z$ b
- (DbQuery ConnectString SQLStatement)
/ o, x# t- h" L- d+ k; P - ); defun
7 q: q" f0 e" m - - \7 y, Z) y( s# j8 H. [2 D
- ;;;******************************************************************
2 O, Q% {% j2 S# \/ P% t, A - ;;;ADO 示例程序
" [6 y, t/ F# p. [7 z& y - ;;;******************************************************************" j& B9 y* U) o& X+ j
- ;;; Connects 使用了公用变量ConnectString所指定的连接字符串,而SQL语句为公用
% m- S3 F) B- D; i2 c0 b; I3 Z - ;;; 变量SQLStatement。
- x3 k$ U3 M' H' p9 @( I: I: T - ;;;9 i3 W4 f, B/ ` P
- ;;; 返回值:
& n3 S0 }3 X3 y0 H' {' j- G - ;;;
( w. }5 ]0 v. O8 R4 f - ;;; 如果出现任何错误,则返回NIL。
3 T) k- }; ^8 ]+ x1 d! x) s" Q - ;;;( H7 g; } y% O
- ;;; 如果SQL语句为"select ..."语句则可返回行、返回一个列表的列表。第一个子列表
9 D( M) ]) ?: i) I - ;;; 为列名称的列表。如果返回值中包含有行数据,则随后的子列表包含了与第一子列表中$ `4 n* R( Z/ c& k3 m: I
- ;;; 列名称顺序相同的子列表。7 c3 ~; M9 Z6 Z/ a A. S o) ?
- ;;;
6 O: l- B! y9 {, d" l - ;;; 如果SQL语句为"delete ..."、"update ..."或"insert ..."则不能返回任何行,
" M, _1 P; E9 m. G! g( Z4 i - ;;; 它将返回T。作者想让它返回所操作的行号,但到目前为止还找不到方法。
# ]" `4 z, U: S; M8 [* j- [ - ;;;******************************************************************8 u2 `8 K$ `% a) `: o3 _% f4 p
- . `, t) h4 {7 w/ r# g
- (defun DbQuery
' ]. F& C! ^6 U/ C3 Y! ] - (ConnectString SQLStatement2 N! t6 a% N6 M) R8 h
- / ConnectionObject RecordSetObject FieldsObject FieldNumber" j2 [ L3 {' {1 }: C* i( n
- FieldCount FieldList RecordsAffected TempObject ReturnValue
" }6 O4 ?7 b. `( z- B& T- z - )" f- `8 G" }8 W
' D; f$ f2 N2 P7 K) C5 D- ;; 创建ADO连接对象
5 a; b X5 x% B. @+ x
8 A9 k9 D6 T3 M: \6 ~; l4 x! R- (setq ConnectionObject (DbConnection))
, u! X& N' U, a- B" d% h/ r - 2 f7 R U! K4 ]; D0 S" J
- ;; 试图打开连接,如果出错 ...# p* s/ Y' R5 v, L( D4 }2 B' k
- W+ l+ _+ |; S8 u& m# ~
- (if (vl-Catch-All-Error-p
: U8 l( r( ]2 R - (setq TempObject6 |2 Y9 d3 a6 X. N8 a
- (vl-Catch-All-Apply0 M# B* g( A$ N1 T; ?" w
- 'vlax-Invoke-Method- I% o9 \/ r( c
- 4 A7 K3 O4 Z& J3 b
- ;; 如果在ConnectString中已经包含了"admin"用户ID和""密码,则这6 L* t, X* j# ]' m3 L5 d
- ;; 两个参数可以不需要。" k3 e+ F- \ C# E: b7 s
1 U; Y' P! \. _. W: d Y% Z3 O& g' B7 W- (list
2 F5 h' b- c: A! L/ v - ConnectionObject
7 ?% Y, r9 l9 r+ F4 o" _4 s - "Open") {6 L( B2 }9 D; Z
- ConnectString l& W' C/ ?3 B% [0 c9 x
- "admin" "": M( X% r1 a7 u5 Y% I8 C3 r
- adok-adConnectUnspecified" u7 U! r7 T/ u T9 ]3 Z- m
- )! l9 S8 r+ K* f
- ); vl-Catch-All-Apply
+ O! J6 ^4 ]9 D* C! c' w7 P - ); setq
$ }& s* S/ t5 d/ p. s+ J - ); vl-Catch-All-Error-p3 {5 o$ _3 l6 {4 _8 T
- 8 c4 O& H- c) g6 S& R' V! M5 S
- ;; 则显示出错信息+ B, g& {+ S! i- z5 c
- 4 ?( r$ W6 u9 H7 ]
- (ErrorPrinter (ErrorProcessor TempObject ConnectionObject))4 ^" x# o0 E G( U
" Z" B/ W. v* S$ Q- ;; 打开连接开始处理 ...
$ a8 G7 v6 ]( f0 m - 9 \0 R. \. e/ d4 C9 ~" M5 S
- (progn
# m7 Z7 q. x- m% U5 G - / [* S* S2 ~4 C7 D0 ?
- ;; 创建ADO Recordset并设置光标和锁定类型2 o4 A+ t4 H/ R
- 0 x- `! {. E. ~( k$ s8 @* v0 l
- (setq RecordSetObject (DbRecordSet))# v8 O( O, h3 ~& Q% @
- (DbRsCursorType RecordSetObject "keyset")
! \2 [% Y& f. j1 K% d. L7 N2 g - (DbRsLockType RecordSetObject "optimistic")
9 G# h3 x+ r, q7 v" A
4 o/ |' w F, Q- ;; 打开recordset如果出错 ... w! _, E3 v9 h7 t/ F# @, b+ N& k
: \! E0 E* L, }- (if (vl-Catch-All-Error-p% C) W, C: b w* X" T: ]: W! r' L
- (setq TempObject
0 a- x2 \+ L \; K8 ^% o F - (vl-Catch-All-Apply) ?1 b. s' A/ c+ o p% a9 G- |
- 'vlax-Invoke-Method
4 y/ k8 `0 L' [7 Y - (list RecordSetObject "Open" SQLStatement! V, j2 r: l; L
- ConnectionObject nil nil adok-adCmdText6 Q2 c1 C% J7 h7 u1 b# X& J/ B
- ). a v0 K1 H3 B9 T- ?8 E: W
- )
- I f* \ Z% U3 M4 t - )
# o% W, ~+ m% A - )! B' z- A! p0 i7 L2 G- A
- ;; 则显示出错信息
& W, b; ^' Z" }) H - (progn
+ B. _7 l$ }- T) }* x! F - (ErrorPrinter (ErrorProcessor TempObject ConnectionObject))
8 M; |! F8 K% i( B' G2 \ - )
- o7 R( a( N. K/ k$ W - ! K# X0 N' q( J- f; C3 [
- ;; 没有出错。如果recordset被关闭 ...9 D# Y+ \) r6 z0 N# N+ ^: o P8 m
- 0 n1 A* L' P8 M% M8 @9 e) E- ]9 L
- (if (DbRsIsClosed RecordSetObject)
4 d/ a; Q& x6 e' e1 S0 Y - % U5 F) ?. d( U& k% ?% I! p
- ;; 则SQL语句为"delete ..."或"insert ..."或"update ...",
1 W7 {# j' B/ o; h: M% k5 c! E( A - ;; 因为它没返回任何行。这里最好能返回操作过的行号,但作者还不知道, F" r e0 L6 K' r& W
- ;; 怎样写。现在只有把返回值设为T来表示已经处理了。$ i% s* w3 i2 W
- 9 v- n% s9 C$ Z, Z4 W9 l% u; B
- (progn+ z' H9 J- y$ p# N
- (setq ReturnValue T)
5 {* u7 [/ b5 Q0 m7 g1 ?" t - ) y! ~; a1 c3 }2 U
- ;; 同时关闭recordset,这时已完成。- w" i/ T# G* ]4 l8 h8 m
- (MxRelease RecordSetObject)2 V! p% h+ b' J7 y1 B) o; r6 F S; F
- ). ]( z; b S$ g/ X2 {
- ! r+ S3 H$ f& o1 Y3 X' m
- ;; recordset打开,SQL 语句为"select ..."。
- k5 O2 u; W W, m2 q+ A; a( P - / L1 w7 Z* W2 g Q- q
- (progn- B/ \# n: l* f6 C2 A8 t
- ; z5 }1 O0 c! ]4 N4 s
- ;; 获取Fields集合,它包含选定列的名称和属性。/ h- ]8 }* @" V) t! U- S1 P. i
- - u* a8 A) u5 P7 m$ ?1 D
- (setq FieldsObject (DbRsFields RecordSetObject) ;; 将字段作为对象3 v L$ t/ J; u$ | \/ C
- FieldCount (DbRsFieldCount FieldsObject) ;; 取得列的数量* p1 J! \ R2 C2 ]* R" O4 h
- FieldList(DbGetFields FieldsObject FieldCount);; 取得列表中所有列的名称% l# }0 x- v) K6 U( F( i' }% C8 s7 g! X
- ReturnValue (list (reverse FieldList))
/ D( o; w/ u9 ]" V$ L( a - ); setq* V1 m. r" {- [0 Z0 R' m! ?9 Y
- 3 K8 {; ?$ q* R; C, h
- ;; 如果找到任何行 ...$ u( r) | i) A6 n4 _- M
7 F# ~2 {# Z: A8 \" q! G- (if (< 0 (DbRsCount RecordSetObject))% l9 }+ H1 j" |; Y: Y4 p
( J1 X z; T/ N8 |1 d4 R- ;; 我们来处理最棘手的问题!创建最后结果的列表 ...
% y |' @$ Q. i2 a9 [- H v8 }7 w - # v. R7 Z- _+ j
- (setq
8 @/ Z; y% T0 O- C8 Q - ReturnValue
v; Q0 I- O. {; Q4 t- [( M- i& J. | - + \2 w$ I6 [+ G
- ;; 添加行列表到字段列表中。
( @* n5 c1 | C! k
. _! g/ n _' e9 L$ p- (append (list (reverse FieldList))1 O7 y/ a& D- g# {
- 7 {6 m. o d& ]/ m3 Z9 h
- ;; 使用了Douglas Wilson一流的列表转换代码
# M8 ?) Z; V% \. {9 f - ;; 来创建行列表,因为GetRows返回的项为列顺序5 z$ e2 t/ ~6 F/ y
- / V; Q7 Y; s" x$ j- I
- (apply 'mapcar
9 P4 g1 G a; e+ |' k - (cons
6 K4 }, B% U- ]' r: a - 'list& d8 }4 I0 c0 X4 O6 [
- / Y& J: J' U: M' q/ L
- ;; 设置转换变体列表的列表到AutoLISP标准
) i8 ]5 p7 k% |- o, w9 Q$ C2 q - ;; 的项目列表的列表。
$ ]8 x4 T; j* C K/ q3 F+ a
; B$ b" g" @! r0 ?# X0 D- (mapcar: |" ]" \ t& I3 i) x9 e
- '(lambda (InputList)
L6 A7 W& c* Q+ H - (mapcar '(lambda (Item)4 R5 y! }8 {2 d( A1 `# L
- (DBL_variant-value Item), n0 m# |; Z6 r2 O
- )4 k. X8 W/ E4 |& ?
- InputList
6 r1 ~0 f' o/ c- Z) J. ?7 H - )
2 P( P: {8 k4 Q4 z! r8 t - )
! }* M' y8 u! ` - ;; 取得行,将其从变体转换安全数组再到列表
( E* q) `% G9 p7 V. A" |8 T2 v: y
$ [ S/ _! Z2 \+ F1 u- (setq t2 (vlax-SafeArray->list7 g0 i; [( V* D) _, z6 U
- (vlax-Variant-Value* l$ P1 {7 u- a0 J" v6 d' `
- (DbRsGetRows RecordSetObject)2 ]. ]7 g: N' @# n7 F. o' R K
- )
& c- O" P9 |, q6 }' x5 _+ B( d - )
6 ~0 K& `8 G) S) _4 r2 W - ); setq
! |, t+ k w# E3 H* P. { - ); mapcar
; K* p- O. S! H7 q - ); cons
5 q( B V' B" [, G* Y ^& q - ); apply
. n: Y% E7 e9 ?! L! T - ); append
5 P" z1 n- a" W( B( T - ); setq, i- b" j: _) }' \2 u# o+ i' s9 S" M0 _$ |
- ); endif
. R0 b3 y0 U% ?; e4 _9 \4 X* o
^' L3 L* w3 Z- ;; 关闭recordset
0 s, C3 b1 t! R, H - (DbCloseRecordset RecordSetObject)
6 \9 [4 { r" @" G' V8 z3 y - & V3 B3 h! I# f* A
- ); progn
5 J" G: g5 @" R$ Z+ N& t - ); endif
1 o" J8 w' [; b+ o3 K% S - ); endif
' Z/ j' G( q; v* d4 ?/ U
& r# L, e9 w4 f+ G$ y- ;; 关闭connection
1 C# O3 E* {$ `, k; Y - (DbCloseConnection ConnectionObject)
: _8 a% B+ A' o3 `* j. y
( r1 ]/ `( o8 @8 \+ }7 M! m- ); progn- C: m; T4 X9 N# x- S7 J1 y; v6 L X
- ); endif) n4 K% c9 w% W9 a
& B. p6 i8 F V! s- ;; 返回值
. V* d! A5 L v2 R - ReturnValue5 W( s9 W* [/ U4 j
- e' Y$ v& g' k) s9 J3 X8 a# x
- ); defun
复制代码 |