以前没有接触过这方面的内容。给你找了点资料，希望对你有用处。% E2 k2 L b5 v
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- Visual LISP中使用ADO接口与MS-Access相连接) [( a7 l7 ]! s1 P4 B; z( k/ i2 ?
- 在Visual LISP中使用Microsoft ActiveX Data Objects (ADO)接口与MS-Access和' E- X" e _4 |, G
- SQL Server相连接的例子。
5 d. U5 Y+ E/ h5 s4 {5 @ - : \2 I9 f8 ~7 ?6 P8 e; Z, l3 ~
- 通过类型库初始化ADO接口方法：& e. T+ i! {3 M* B
" Z) d4 e y* m# ?- (defun DbInitADO ( / ADO_DLLPath)$ h, r6 t, y+ n
- (if (null adom-Append)
/ |; }( c( C/ N' q2 B+ j6 I# `) @. X - (progn9 s X5 I/ l8 g0 s/ V" D
- + b& R; Z$ i" L& i$ k# M: x& C, C
- ;; 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( [/ m+ h; D/ g T
- ;; 文件夹将会更加合理，可以避免不必要的错误。+ G+ v! E+ s; e: G
8 k# K) N/ M" c- (setq ADO_DLLPath) p9 C( g3 f# j' e* f) ^
- (strcat (getenv "systemdrive")
: F0 f2 m2 o. ^, T: C; ] - "\\Program Files\\Common Files\\System\\Ado\")% G6 L; f* d* h3 r S5 Z7 Q
- )
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3 }3 S3 a+ U& \* L/ Z# ~! A4 x+ ~- ;; 如果查找到类型库 ...5 i. Z: k5 i4 {3 T. t
- ; B# o6 U; f0 e% l9 A* K5 e6 t
- (if (findfile (strcat ADO_DLLPath "msado15.dll"))
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; E4 ^2 U" q4 ]2 L- ;; 将其输入
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0 _- m9 ?. X! e# W" ^) D1 B- (vlax-Import-Type-Library- v" y1 E5 b4 N, t. I# F) x
- :tlb-filename (strcat ADO_DLLPath "msado15.dll")/ X: ?9 N* A' t9 \7 e
- :methods-prefix"adom-"
2 f/ f" v. }1 X9 P7 C, \- l - roperties-prefix "adop-"2 U2 g4 z) \% j2 E9 z. F# {9 J
- :constants-prefix"adok-"5 H" p$ N6 m c
- )
7 D+ R/ U: D- x# b - ;; 找不到时，则通知操作者/ I. I+ B2 U! z1 w8 P- B# Z& K! A# `
- (alert (strcat "不能找到以下文件\n" ADO_DLLPath "msado15.dll"))
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- )# \; f* |1 Z* F4 }
- )
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- 生成MS-Access 或 MS-SQL Server 数据库的连接字符串
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0 a7 M3 u3 z5 m. k0 R$ G- ;;;******************************************************************
: H% h# c/ _3 o* y - ;;; 使用ODBC(不需要DSN)连接MS-Access数据库
- Q" M& b5 U8 B+ |( G: |) ` - ;;; 示例： (DbConnect_MSAccess1 "d:/dbfiles/products.mdb")( Z$ ~ p/ h* v4 q$ ]/ F3 S
- ;;;******************************************************************
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- (defun DbConnect_MSAccess1 (dbFile)( @8 T* t. d9 q. z; }: h
- (strcat/ I* f; _7 a( j# N
- "Provider=MSDASQL;") M) g8 H. i) h+ O
- "Driver={Microsoft Access Driver (*.mdb)};"
- l5 @4 z/ k& ?5 \+ c3 r1 l- W3 R - "DBQ=" dbFile+ [5 J# `1 H8 Z
- )1 X1 V/ _) t/ F6 s& l
- )
- w. k5 `8 U% B1 X: ^$ l - ) l7 l+ b# Y0 B4 Q
- ;;;******************************************************************4 |1 U9 m# d+ u# }+ i& v" U, V
- ;;; 使用JET 3.51连接MS-Access数据库
+ k: S# z: j1 m/ O& ^ - ;;; 示例： (DbConnect_MSAccess2 "d:/dbfiles/products.mdb")6 Y8 g% i( E D
- ;;;******************************************************************
% A8 t. t5 H: K8 M" W% `& y
7 o$ J- P N1 f) E* @( Q- (defun DbConnect_MSAccess2 (dbFile)! G8 i+ V4 |) J/ {% k
- (strcat
0 s# L# b0 @8 i5 O - "Provider=Microsoft.Jet.OLEDB.3.51;"
d' u8 X6 f7 m# [" e B8 ] - "Data Source=" dbFile4 I) L7 p x9 I7 u8 l& S; g k+ ^
- )- U* \! `0 x* e+ s* ] l
- )
- C3 \4 n) O$ `; Z
1 e% L; a' }3 i: c$ H- ;;;******************************************************************6 o4 s% p0 G. } n
- ;;; 使用ODBC(不需要DSN)连接MS-SQL数据库
- H! r: f; j& ~: \1 m8 [ - ;;; 示例： (DbConnect_MSSQL1 "SQLSERVER1" "products" "sa" "")
5 { M. J9 `+ Q. X* I! ^% ] - ;;;******************************************************************+ u) V+ Y2 D8 ^; c& [# d
) d9 `. Y, K8 B) Y- (defun DbConnect_MSSQL1 (dbServer dbName dbUser dbPassword)* l2 I8 w ~0 ~
- (strcat
7 }8 z, n3 R+ D7 q: j - "Provider=SQLOLEDB;"
$ |6 b0 @/ p+ D7 |) H& U0 F7 w - "Driver={SQL Server};"
3 B ^$ x5 `" v' y% T1 _. n - "Server=" dbServer ";"; O9 L+ j. G% K3 a
- "Database=" dbName ";"
% ~, [1 `9 k6 _" B& t - "UID=" dbUser ";"; y7 i( L) `3 N. L5 p
- "PWD=" dbPassword. f& p5 C( Z6 |* ]
- )3 p8 t6 Y5 T. w% c4 c3 x
- )
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- ;;;******************************************************************* ]& j+ R+ y/ C7 m$ l
- ;;; 使用ODBC连接MS-SQL数据库w/o
* k3 V7 K7 L7 k" B - ;;; Ex. (DbConnect_MSSQL2 "SQLSERVER2" "pr_catalog1" "sa" "")
- r* `; x, N, G$ [' M& L - ;;;******************************************************************/ }) B* {9 d) q, M
) b; t9 G% K1 S$ f ?- (defun DbConnect_MSSQL2 (dbServer dbCatalog dbUser dbPassword)' j5 \. N5 h8 E- l, Z
- (strcat
! {6 w( n% |' v% |0 S - "Provider=SQLOLEDB;"4 t o* |0 ~8 Y. ?) P4 U5 U3 O8 x/ n
- "Data Source=" dbServer ";"
8 N0 J8 n8 y9 _. Z/ d5 M L- W - "Initial Catalog=" dbCatalog ";"
- d* r6 X0 o) Z+ {; E. M - "User ID=" dbUser ";"
# u! a; P9 w$ b0 `9 P( O" ? - "Password=" dbPassword- ^# E0 Z' C9 R
- )
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- 生成适合不同情况的SQL字符串
4 n$ p% c( l. g* v- @- { - (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/ y* M l1 w; ^% V3 a) R5 f$ c% U
- 当的值中来取得正确的查询语法7 u; m7 [! }+ W: l8 u+ |: z
- + i- b; U& W/ D* I' a2 ?
- (defun DbSQLCommand (tblName colName Value)
5 N, B+ u, i% x+ P" i+ R - (cond
9 y) W; m# E- j$ i' ~ - ( (and colName value (= (type value) 'STR))
. t- l/ e% n6 m' l - (strcat "SELECT * FROM " tblName " WHERE " colName " = '" Value "'"). C: R+ ^) o9 B
- ). B s+ Q) R3 ?
- ( (and colName value (= (type value) 'INT))
3 W7 X2 w1 R V( A2 o& T2 [ p - (strcat "SELECT * FROM " tblName " WHERE " colName " = " (itoa, k3 D5 A" _ D
- Value) )! g$ ?4 ]0 a/ o5 v* O
- )
. f7 k! ]9 U8 `9 V- {6 }' Q: P - ( (and colName value (= (type value) 'REAL))+ d- b- }7 r3 |8 L
- (strcat "SELECT * FROM " tblName " WHERE " colName " = " (itoa (fix3 y# Y1 u# w8 |% P4 a- W1 w
- Value)) )( O* J: [; E% H" C4 z& Z% @/ Y- ^
- )
. f% U0 L. ^5 J/ x7 f5 x: T - ( T (strcat "SELECT * FROM " tblName ) )6 k$ @, `, G @! E5 m, D
- ); cond6 s- O0 x7 }4 Z9 e6 k8 ^
- )
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* K, g9 g- p5 ^/ b# Y
7 y% D5 Y) V0 A- 从内存中释放VLA对象
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- (defun MxRelease (xObject)4 e0 {$ k$ r6 x3 E. O4 ?
- (if (not (vlax-object-release-p xObject)). D R( m, B2 ]% r+ c: T) C
- (vlax-Release-Object xObject)
_- l1 M$ h e& Z - )/ u. z& s" ?2 U s
- )
0 s4 K, I' q4 T! }9 O& d
+ B |2 M, k3 p+ J" A- 关闭ADO Connection 对象并将内存释放出来
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- (defun DbCloseConnection (dbConnObject): D9 N, Z9 g7 T, e5 s1 [
- (vlax-Invoke-Method dbConnObject "Close")( Z, o! ]. p/ B9 {( @( J
- (MxRelease dbConnObject)
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- $ h0 G. b9 o3 J9 @+ s! }) f, y
- 关闭ADO RecordSet对象并将内存释放出来- E, o, y% I1 j+ i
- * i* P5 ^9 C8 R. z
- (defun DbCloseRecordset (rsObject)2 o& \# s5 I+ ^5 G% u
- (vlax-Invoke-Method rsObject "Close")
; \) p3 u# ^0 L7 D5 Q+ _ l( k - (MxRelease rsObject)
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# j+ S+ f8 n/ n: s; [# A3 x
5 q* h% e8 D4 Z- 布尔测试RecordSet 是否为 Closed (T 或 nil)5 d2 Z8 X' Q( }
- 8 y! {, l! e1 T; X
- (defun DbRsIsClosed (rsObject)
9 A6 R& Q. B- J, [ n a - (= adok-adStateClosed (vlax-Get-Property rsObject "State"))" H2 J, ]9 E" q0 u' @, f) k
- )
, M5 n; X) D9 K - ; V/ `3 E+ P; ]5 ~2 ^# p% R
& U n0 r: [* O5 u1 V4 |: v9 x+ R- 返回一个ADO RecordSet对象中的记录数1 \* A1 {6 Y: `& t/ ?2 U
. H5 ^6 V" V" M# F* I8 t- (defun DbRsCount (rsObject)" f7 k5 i7 E+ P- n
- (vlax-Get-Property rsObject "RecordCount")
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- : M0 u& j, }3 u0 C0 h4 ]" ~
- 3 u( ]/ x1 \0 w0 ^
- 返回Field对象中给定字段数的字段名称, T) f! Y/ f& E9 E
- & k0 c. a3 Q3 Q9 M$ ?* i
- (defun DbGetFields (fObject fCount / FieldNumber)
( Z+ {+ v4 g5 Z; O" t$ H/ _ - (setq FieldNumber -1)
+ Q. a% s, O1 Z, {
+ O1 A6 B+ Y: \1 z3 O0 w- (while (> fCount (setq FieldNumber (1+ FieldNumber)))& M- m0 m# W) H
- (setq FieldList! R# H1 \ v$ r0 i7 o: X: W1 d
- (cons
- g8 n J3 T3 p. f - (vlax-Get-Property# q, j7 ?" X, `0 K& l6 f
- (DbRsFieldItem FieldsObject FieldNumber) "Name"+ o$ t) c# ~1 g
- )& i( C4 d' }6 h' n- t
- FieldList
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- ); setq
, z5 P3 {3 I6 M7 T - ); end while! ]* ~" q7 E% P2 ~! n! X! F" n
- ); defun8 |; l0 y$ |2 N( b' I
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2 w- n9 W& O- d& T7 ~- 从RecordSet对象返回ADO Field对象 r% r$ ^, P, e" Y& M
: Y' I0 Y8 L, X8 [- (defun DbRsFields (rsObject): b) Y% ^, b7 q, a
- (vlax-Get-Property rsObject "Fields")2 Q" u: c2 P! s! {0 Q
- )* _1 O, A5 v: ]+ C- X& P6 h1 s- `
- 0 F4 I/ |1 N* m* L. K+ _' t3 e& s
5 `' \5 K0 A6 d1 \8 l% O. ]/ U- 返回给定Field对象的字段数量
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- (defun DbRsFieldCount (fObject), q* H6 I1 A4 G
- (vlax-Get-Property fObject "Count")' N y! L1 X! m8 y- x+ a
- )& M8 V( |7 n1 _2 M; W% y ?
- % p% \1 {! L1 v. f+ M
8 K/ H3 I8 h) m b- Z+ W- 获取Field对象的字段名(项)
7 w2 \$ P5 ]( g - . l- _. \# s) u6 U* f
- (defun DbRsFieldItem (fObject fNumber)
1 b$ v2 K$ B3 w - (vlax-Get-Property fObject "Item" fNumber)
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; J4 {- B- ~' E, O/ n
* o! z/ L5 e6 n- 返回RecordSet对象的RowSet对象; s* u! _2 W/ s) {0 r
- 8 g2 H% t9 A. n9 V" n! g$ n/ j( c1 \# J
- (defun DbRsGetRows (rsObject)
+ B7 c: Q3 k1 p6 }8 m& v, ]( L7 H - (vlax-Invoke-Method rsObject "GetRows" adok-adGetRowsRest)
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( A* k9 P! I' C P, \, p - , Z# \# B3 U0 [ ~& e* M! E! @3 L0 a
- 4 T- { \6 ]. R, s
- 应用一个ADO光标类型到给定的RecordSet对象 r9 ], j5 j# G
* x9 \) k; e* N& L# ~, l- (defun DbRsCursorType (rsObject curType)
6 }4 {6 E' i Q8 J: X# j - (cond
$ n) U% |2 i, a. u6 O. _) Z - ( (= (strcase curType) "KEYSET")
3 O( e t7 n ^" C! z0 U; r - (vlax-Put-Property rsObject "CursorType" adok-adOpenKeyset)/ X5 M2 D/ Y4 u( }* M2 x
- )$ K$ j& Z1 w# v1 K1 O
- ( (= (strcase curType) "DYNAMIC")
2 v# g5 M5 Z4 Y! x( @. q5 g: w - (vlax-Put-Property rsObject "CursorType" adok-adOpenDynamic)
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- )
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! @- ]* {; s; B6 U5 F3 X9 g- ' u! @7 S [7 e. D& o3 ~! _
- 应用一个ADO LOCK(锁定)类型到给定的RecordSet对象
; l1 B8 u3 ~/ P- }2 H) L - " x, @* ]8 i, o9 C' q3 l% J4 S0 V
- (defun DbRsLockType (rsObject lockType)
% r0 v! Z* f# e - (cond" N: D; H$ Y8 t% D
- ( (= (strcase lockType) "OPTIMISTIC")
/ i, v) S V+ \( m - (vlax-Put-Property rsObject "LockType" adok-adLockOptimistic)! N+ K# Z4 T% k2 R" A7 E/ O3 H
- )1 u5 Z3 T8 J/ I& Q& i
- ( (= (strcase lockType) "BATCHOPTIMISTIC")4 n3 P9 o$ C, k9 `/ |2 M& j
- (vlax-Put-Property rsObject "LockType" adok-adLockBatchOptimistic)
/ s& _; r) Q" ]* V ` - )% F# _: X. k- P, w8 F1 ^& o/ r
- ( (= (strcase lockType) "READONLY")
+ Q* _% D, h4 n0 ^ d- h, \- J - (vlax-Put-Property rsObject "LockType" adok-adLockReadOnly)
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- )
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@% D( G( v& X5 u7 L
3 Q0 @3 S+ c( M, b5 q; F* w- - _. ]4 M, s$ W
- 创建并返回ADO Connection对象$ @. z$ Z+ P) n1 {4 ^
- + V" j+ c8 x4 B' o
- (defun DbConnection ()0 f6 I# g. ~+ l" J$ `5 N
- (vlax-Create-Object "ADODB.Connection")0 q" D: k' i$ ` f6 q
- )- f$ N" y3 l L0 b- D
- , J" C6 b* ?2 V( a( ]5 |$ i
/ e$ O6 N: B/ I: y R" g) l: ~- 创建并返回ADO RecordSet对象
7 Q2 V3 Z3 c E9 f, y- p
7 i9 U& l/ {8 w2 ]0 u- (defun DbRecordSet ()2 f* P: c" G6 Q- L0 @8 E8 K
- (vlax-Create-Object "ADODB.RecordSet")
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5 m1 H6 M$ R, {9 Q0 X
# h2 t) b; t) R$ Y& F- 将所有出错收集到一个点对形式("name" . "value")的列表中的函数/ Z% n+ {% J$ B9 Y+ r$ I) x3 i
) g& W, L* Z' m1 N$ b5 }0 k& h- (defun ErrorProcessor" H2 v3 j1 M1 v5 h% b
- (VLErrorObject ConnectionObject / ErrorsObject' C0 f0 b7 H! z: J
- ErrorObject ErrorCount ErrorNumber ErrorList$ `' q0 @4 Q: ^ p0 l
- ErrorValue8 M, ~7 u. b# p5 _9 `; T
- ): E6 A6 \1 I( V9 G# J* ?* T
7 f u7 n& ]: L- ;; 每一步获取Visual LISP的出错信息3 d6 m5 f; V* ^
; \2 w' b9 [0 H0 j, T! x2 t$ i- (setq ReturnList) | C, X( M) ~6 G3 }1 B1 o0 h
- (list" S( {- D5 V4 d) ]! z
- (list3 J5 y. b: V7 A3 y! t: U2 X/ l& h
- (cons "Visual LISP message"
1 b8 ?8 s' [, c$ Y - (vl-Catch-All-Error-Message VLErrorObject)
' p; d2 U: S- g' Z7 A/ k/ I - )
5 U9 G( c) }" `; ~: |' l - )9 s: W2 t7 O* z- L* s
- )# {7 P, z6 g3 I [6 f) x! u
- ;; 获取ADO出错对象及数量0 z9 E3 R N. S9 \
- 6 r# q6 P% m' Q3 L
- ErrorObject(vlax-Create-object "ADODB.Error")
, p1 T( M9 M7 i - ErrorsObject(vlax-Get-Property ConnectionObject "Errors")& ?) r% F1 b& R* k5 ~$ \- k
- ErrorCount (vlax-Get-Property ErrorsObject "Count")
; `# H# y4 G2 n0 w; g2 A | - ErrorNumber -1
; M `2 x/ L: K% G; h - )
) x" s* I1 _' t) q" f, Q
2 H" [6 ^6 n, Q3 l- R- ;; 循环所有ADO错误 ...8 Q0 p1 Y, i& Q/ }+ K$ d
- (while (< (setq ErrorNumber (1+ ErrorNumber)) ErrorCount)
# A2 t" }; J/ l, `9 Q6 U+ Q: H - {8 J( I( h3 W7 |; T3 \0 @
- ;; 获取当前出错的出错对象
7 ?! z9 {( C6 ~+ L0 X - (setq ErrorObject (vlax-Get-Property ErrorsObject "Item"
# d9 h$ w2 u( X$ i2 ^0 I - ErrorNumber)+ C) I* l; X* s, B D6 b X
- ErrorList nil ;; 清除该出错的列表项% I1 S3 r0 H* Y: Z0 K2 i3 I6 e
- )2 ]* y3 q( P4 w' o$ w
* ?. j( p; m4 W) ^. s- ;; 循环该出错的所有可能的出错项
- j- {+ l+ q p o - (foreach ErrorProperty
% ?1 R/ e* k/ l" k; S/ _& o - '("Description" "HelpContext" "HelpFile"
) P+ k: a, j0 `/ l - "NativeError" "Number" "SQLState" "Source"
# _/ Y5 @ `6 a$ J$ a - )
; M6 W3 d1 u+ K6 e - ;; 获取当前项的值。如果为数字 ...
( s8 @, d6 W+ r# p# j9 H/ [ - (if
* I. A- H1 p K3 B* H) E - (numberp
6 G, @, d; I9 j& i1 W( H - (setq ErrorValue7 b' a9 E8 M1 [. z4 j
- (vlax-Get-Property ErrorObject ErrorProperty)
- x3 O) c8 ^1 |( Z+ u# K - )) U" e% m+ V! i( Z/ h! ?( V5 W
- ;; 则将其转换为字符串以便与其它一致, l9 Y7 H1 v* Q% K5 |4 S" X
- (setq ErrorValue (itoa ErrorValue)): ` F% h! Z' U: T
- )3 m! b6 d" P) D1 N X# F8 ?
- ;; 同时保存起来
& L+ l. h8 r! P' y/ ? - (setq ErrorList (cons (cons ErrorProperty ErrorValue) ErrorList))$ B9 ? ^$ J5 g$ L* Q
- ); end foreach
" I( N' m4 p' ~0 ] - 5 g3 b% ?: a6 Z9 V
- ;; 添加当前出错列表到返回值中
3 o; e7 L" K* {6 e! v2 a* W$ | - (setq ReturnList (cons (reverse ErrorList) ReturnList))
5 c9 Q: E; m1 e) f4 j2 ~ - ); end while5 d3 I& Q) \& f' ? w g+ V
- $ k( V, h/ u, N/ P: C. p: n/ N
- ;; 将返回值设置为正确的顺序) }* Y" i' ]3 | h( d. R
- (reverse ReturnList)
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- ); defun; y2 S ]. ^$ v$ C4 y1 L/ U' c
1 ?7 d$ w9 [1 T6 f+ z, q
9 i. l& N. l( e! J A/ r1 U. J- 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- W& Q# \: h3 b
- 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
P4 b6 r3 T( C+ ?, K - 框结束后被调用。
! f3 L6 C9 |1 q! T8 S
8 d. [; X+ T# i0 f* I* ]1 r- (defun ErrorPrinter (ErrorsList)
" e$ m: q( H' P4 p, F* h - (foreach ErrorList ErrorsList
7 ^# H% j2 i/ b! h) o2 `$ l/ ? - (prompt "\n")
. `) N! J) \ l, T5 O - (foreach ErrorItem ErrorList' |( K1 o- o" @2 S, D$ [1 x3 R
- (prompt (strcat (car ErrorItem) "\t\t" (cdr ErrorItem) "\n") )
) _% f! I: K+ Q* p/ K# @ - )
+ Q4 n6 H8 m) b5 p. S - )4 P: L2 Z0 w' h6 t) d0 T* B2 s
- (prin1)$ ~2 P9 V# B1 I: C( W3 v" S: @
- )$ K+ Y% p- _ L
- " ~5 V: k2 M) I
- " o2 @1 j) U8 c1 ^1 P
- 以下为使用ADO的完整例子：
+ W& |/ @4 S0 ?" s; h4 Z" ^; ^ Z
3 W$ G7 q' e( s0 r$ {3 q* d7 F- ;;;******************************************************************3 D" P- {, l: Q7 p" a
- ;;; 从Access数据库文件(dbFile)的表(tblName)中清理掉列(colName)值为给定的1 `/ u( m8 f2 B7 A& o9 P
- ;;; (value)值的表记录
2 K* n$ I7 ?* j1 ]$ S - ;;;******************************************************************; W j+ f0 k! B k
- ) z/ _: V: g& }! K* D. h2 I2 r. D8 `
- (defun DbTableDump
! l: ^% F# \! b/ v b' D - (dbFile tblName colName value / SQLStatement ConnectString)9 H q0 w$ l; N, s3 U- ]7 W
9 H0 Q& N8 E7 w( P- (setq ConnectString (DbConnect_MSAccess1 dbFile)! W9 H7 K6 J9 Q8 [5 p8 q; F: S' ?# Q
- SQLStatement (DbSQLCommand tblName colName value)
: P9 ?+ t3 r( I2 t: R) _$ y - ); setq
2 J& L) F( ~3 S! Y, m1 C - (DbQuery ConnectString SQLStatement)
4 @& z8 p9 f. X$ n- f0 k; f - ); defun
. J+ o, A# S1 Z# E& L
8 B6 I6 }, S% g u0 N+ P$ o8 F- ;;;******************************************************************; e5 Y: O' e; I, r" i3 o6 o( I5 \
- ;;;ADO 示例程序
) O9 D0 h) x6 B6 k0 j$ z - ;;;******************************************************************2 H% m+ \4 n' h1 o9 ]1 ^
- ;;; 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
0 l U0 u& G2 A u) s9 n - ;;; 变量SQLStatement。
% n2 p8 J& a5 Q- _ - ;;;
" g& ?5 ?! m! l. Z - ;;; 返回值:
% Q. D7 \9 u. R8 O - ;;;; P7 ~0 n! |! O+ d& S0 V) Z8 V
- ;;; 如果出现任何错误，则返回NIL。" g) O" M: ?* s2 S2 v
- ;;;2 A4 A$ Y8 \) A3 q
- ;;; 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 u) y2 Z/ Z! G" j
- ;;; 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6 `7 A T* S- m% c6 j# r' U
- ;;; 列名称顺序相同的子列表。
' y8 u$ A* A8 r$ M - ;;;
7 e O1 }+ M; e5 O$ ^+ N9 | - ;;; 如果SQL语句为"delete ..."、"update ..."或"insert ..."则不能返回任何行，, O, b3 f! |7 W; n' K- {- S
- ;;; 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。* {+ U5 N, E) _9 N: P
- ;;;******************************************************************% _1 Z: _: t4 I8 s
- - {8 G8 p2 N- v$ v9 J+ L
- (defun DbQuery
- {, p6 x! Y( j2 F+ v* ?6 B - (ConnectString SQLStatement
! n( ~) d8 h! I1 g% K - / ConnectionObject RecordSetObject FieldsObject FieldNumber
2 B5 _. r% [- H% F' I - FieldCount FieldList RecordsAffected TempObject ReturnValue+ _ ?" y; Q g) i
- ); ?8 P5 S- R) x- K
- % |) t6 K/ G) Q9 r
- ;; 创建ADO连接对象- R0 Q' d0 L. d; U: L! U
- ( @9 L1 | W- E) M
- (setq ConnectionObject (DbConnection))6 o! ^& ^! v& U
0 s8 d8 [# S5 ?" B/ j- ;; 试图打开连接，如果出错 ...
& \7 M+ c3 H5 @( w1 `) C - 7 H5 ?+ i$ A% g5 ~
- (if (vl-Catch-All-Error-p
+ Z5 [, O* ^/ Y) J0 `5 E - (setq TempObject
Y$ |7 q. [7 H! g) B) p - (vl-Catch-All-Apply
) B6 _7 ?1 A% I7 U! s. L- _# \2 q6 O - 'vlax-Invoke-Method/ E V4 N7 h% i4 J/ m% H& Z
/ a6 a& t: ~3 u3 K0 E$ D9 ^5 S z- ;; 如果在ConnectString中已经包含了"admin"用户ID和""密码，则这% H0 N/ k5 o* V, w5 P- T; [8 s9 ]
- ;; 两个参数可以不需要。
* k B4 D" ?: e3 |: U - # I3 M B# C/ B" u: N
- (list! Z% V4 G c* l. V4 v# X: L/ l& |: i
- ConnectionObject
2 V2 e9 `. D6 Z) _7 w - "Open"
) `! l% }- S7 S3 F! O% B( H - ConnectString
( U) L- g U& i# `8 R* P - "admin" ""1 h, |1 G6 r: K
- adok-adConnectUnspecified- m. y+ Z- ?& l H% f% u
- )
" \! A6 x9 }; I - ); vl-Catch-All-Apply) x! G$ f; c# `; o
- ); setq
' ^8 g, P" x6 R6 V5 F7 o - ); vl-Catch-All-Error-p
- h* g" T1 F' E7 b T2 v' l5 `
, I- o$ x6 l; {% F U: J A- ;; 则显示出错信息
4 C4 O4 m W% T - 4 H' L. n1 s+ D$ G/ c b& u! b2 s5 \3 m
- (ErrorPrinter (ErrorProcessor TempObject ConnectionObject))
+ U. t' `& F8 h' @/ `/ ]# _ - 0 P! L2 V# D/ _2 v
- ;; 打开连接开始处理 ..." C# K+ n& d7 }& m
- 3 E1 g( _' c- @# C* O
- (progn
' {/ n! e7 g) E( [* i
' A' `0 V" c0 r j8 S- ;; 创建ADO Recordset并设置光标和锁定类型0 R' p5 V' Q! A+ Z0 G. M& q7 U) u
- - `) k! f( L( ]3 |0 a& J. c
- (setq RecordSetObject (DbRecordSet))
{* v4 m7 i2 K - (DbRsCursorType RecordSetObject "keyset")
: i3 P% d( { q2 h# g+ P' g, i- i - (DbRsLockType RecordSetObject "optimistic")7 i- _/ c, b! a" `7 r+ }, z7 ]( S
) I) x A% J- Z3 r$ D4 y$ {3 Y4 a- ;; 打开recordset如果出错 ...+ y4 z# B4 h& `
9 `: a p8 f+ n7 y6 k- (if (vl-Catch-All-Error-p
( a. E, m5 R- |& z! ]3 J - (setq TempObject6 Z6 B2 M( C7 n# G/ T; l! h
- (vl-Catch-All-Apply2 j- ]; X( t% i9 ]
- 'vlax-Invoke-Method7 S: j. u$ q- f3 G. O
- (list RecordSetObject "Open" SQLStatement
1 ~) L, u' S1 Y x# {+ R - ConnectionObject nil nil adok-adCmdText- Q9 G, Q$ R& T& a% f/ u5 H
- )
$ U# u R, Y$ {. h - ): K0 V8 Y- X# Z* X
- ); N9 A( R9 u7 ~
- )+ |; n4 ^0 d3 J3 [/ @. y1 P8 J
- ;; 则显示出错信息5 T$ v2 L. n0 a6 h
- (progn- X5 ^( A7 d$ s+ L5 d
- (ErrorPrinter (ErrorProcessor TempObject ConnectionObject))7 H) c9 f; t4 o) i: B* F7 ?& v' ^
- )( H. a3 D: n& _; x$ I$ @
- ) H) ?3 v, j, R. I0 M- Y; E
- ;; 没有出错。如果recordset被关闭 ...
}& ~1 g2 ^) t - + s- r6 W2 Z% i/ o
- (if (DbRsIsClosed RecordSetObject): O- a2 K& q* W/ b7 D3 L! p
' Y$ t: p! b4 Z1 O5 S8 ]# v- ;; 则SQL语句为"delete ..."或"insert ..."或"update ..."，
. Q; ]4 A7 `* y1 k+ g* e; Z - ;; 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* M* z/ s& K+ F3 I% P
- ;; 怎样写。现在只有把返回值设为T来表示已经处理了。; ]6 Z$ U0 @ B# z
- 7 E/ I' W. K" ?, P- Q: [! n
- (progn) K0 ~! F# |" z) u/ r( M j5 u! U: P
- (setq ReturnValue T)
1 M6 c4 |' L7 B9 d - / y/ a/ Y$ q& r3 @# U/ r! x/ o
- ;; 同时关闭recordset，这时已完成。5 V) F4 z3 |3 Q% R: b! p# Z, H4 D" ]
- (MxRelease RecordSetObject)9 E; g3 h* N% U7 a! C
- )$ b+ b9 `8 e+ L) G6 `
- , i& `; O8 g8 E1 K! c
- ;; recordset打开，SQL 语句为"select ..."。* q% F, |& V/ c6 s- E: `
- % e2 N( `; M. i9 |5 z* n- A$ M
- (progn& U% p. o9 s" ]& ]* E0 Y9 T
- 6 g& x" A2 r, N9 g% J( J
- ;; 获取Fields集合，它包含选定列的名称和属性。
8 l6 A$ N; {, I - ) V0 F; P4 h$ l- h' l
- (setq FieldsObject (DbRsFields RecordSetObject) ;; 将字段作为对象- f$ T$ ?0 N# \9 J: u }8 C6 ]
- FieldCount (DbRsFieldCount FieldsObject) ;; 取得列的数量/ a6 x# m( Q# o
- FieldList(DbGetFields FieldsObject FieldCount);; 取得列表中所有列的名称
, t7 o3 d& C6 D! H# x - ReturnValue (list (reverse FieldList))
* T6 c* f: W0 i* s - ); setq3 W7 l( u- a+ y/ `
- ( N1 c2 S# X7 t- r
- ;; 如果找到任何行 ...
/ e% ]. [9 y( S4 l4 r9 F" R
9 N+ i+ {8 U! r% @& x% Y) l# K- (if (< 0 (DbRsCount RecordSetObject))% t$ X2 l. b# u5 Z' D) y- u) X4 \
- + k% R$ @9 a# c
- ;; 我们来处理最棘手的问题!创建最后结果的列表 ...
9 V+ T. g- O7 G5 U
, l% u5 z2 Z, \+ Q5 K- (setq
6 g6 E8 _# g" M7 O% y, B) j - ReturnValue
* F( G$ }( H! \ - " @( K$ r6 Q+ W6 \* i& S
- ;; 添加行列表到字段列表中。4 R7 T2 U% Y. ]5 q
6 S* K# J& b0 s" O6 K$ V. Y- (append (list (reverse FieldList))
$ g4 f" @" f! f+ N - + w) m- m ?# B
- ;; 使用了Douglas Wilson一流的列表转换代码
1 P8 J k/ y$ d, x# K& ] - ;; 来创建行列表，因为GetRows返回的项为列顺序
7 E- _6 g2 [2 \8 e - , a: Z, z5 R4 [* q8 u7 D! c+ s
- (apply 'mapcar
; N: }0 k2 L+ k5 C; K - (cons3 D. w g4 v$ f, I4 g: x
- 'list. r5 @+ m: N' W& x
( B$ l) x+ a5 L; n5 l" |5 C- ;; 设置转换变体列表的列表到AutoLISP标准! v S3 s3 U t) L2 O8 }) P
- ;; 的项目列表的列表。 p$ m3 b/ {, n0 E0 k
- 1 ~* i) b. D U8 o( `) V7 i' `
- (mapcar
8 n( R5 Y- b' {! {& @ J! q4 ` - '(lambda (InputList)4 m$ [1 d4 J) Z8 L2 {3 {8 c
- (mapcar '(lambda (Item)
( ]* @% q/ v8 P' R- X! ^0 x - (DBL_variant-value Item)5 d' g/ {7 I' k& E7 z' y
- )
( E& M7 N% o5 x7 A) O0 L6 G/ N, P - InputList# d- }5 R" y% _3 ^4 l2 C
- )
5 d" u4 b. k+ @ N - )! ~' f6 ^4 a- E, W6 X
- ;; 取得行，将其从变体转换安全数组再到列表9 P! A2 V* H m; Q" m
X/ ?" J! M- U1 \! l2 B- (setq t2 (vlax-SafeArray->list
6 y$ W/ A2 Q+ _( P# z) } - (vlax-Variant-Value" a3 F3 K: d' F9 |
- (DbRsGetRows RecordSetObject)9 b9 P, p$ D5 Q' N
- )0 r D' P8 t1 |. P9 [$ X7 w
- )" ?4 O$ I0 B* v" {9 z- v, Q5 j
- ); setq7 g& V& Z( ^* E$ o" b! Q
- ); mapcar
* X. E( B0 _+ ?/ _ - ); cons
J% `/ p. R# P7 W. M - ); apply
" \6 Y5 c6 z. I - ); append
/ x) t1 F# A2 A: V3 h - ); setq
9 X' c1 M) i# G - ); endif
- g" {+ T0 o$ e- j! C. C - 6 @; l- ]: _2 Z* P/ g% t$ \6 S. \0 l
- ;; 关闭recordset7 F+ F, y' ]. {/ q9 ~" A
- (DbCloseRecordset RecordSetObject)7 Z0 c$ \4 p3 A- E0 Z3 Y2 L5 l) A
- 5 e* W* U6 z" W7 q; @( @7 [
- ); progn( B& h- G% \, h% z6 d( Q ]
- ); endif
# O/ z6 R8 f$ ` - ); endif3 f- l* \, E! y4 y7 y8 w- L
- + ?! ?& Z1 s' `/ K$ B8 j
- ;; 关闭connection9 e4 T' x, [0 h7 P; I' j F. i0 V" {
- (DbCloseConnection ConnectionObject)6 y, v- z% o* A9 M
- 8 m+ L* N) S! W9 X8 d- n& N
- ); progn
7 K( ^( h: ^- Q8 N - ); endif7 f& J/ C' n! k+ ? O# y. ]5 }7 X
- . Y! I1 Y" X! N) Q
- ;; 返回值6 n) P5 W, m% l
- ReturnValue$ y% L; g. R, |
- . B/ ?9 P8 O1 m" U
- ); defun
|
发表于 2007-3-30 09:09
发表于 2007-3-30 12:43
楼主