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1
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DEF TEMP-TABLE tt0
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2
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FIELD f1 AS INT.
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3
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CREATE tt0. tt0.f1 = -2.
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4
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CREATE tt0. tt0.f1 = 6.
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5
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CREATE tt0. tt0.f1 = 10.
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6
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7
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PROCEDURE pIterateBuffers:
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8
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DEFINE INPUT PARAMETER delete-it AS LOGICAL.
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9
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10
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DEFINE VARIABLE VhCurrent AS HANDLE NO-UNDO.
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11
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DEFINE VARIABLE VhNext AS HANDLE NO-UNDO.
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12
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DEFINE VARIABLE cnt AS INTEGER INIT 0 NO-UNDO.
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13
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14
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VhCurrent = SESSION:FIRST-BUFFER NO-ERROR.
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15
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DO WHILE VALID-HANDLE(VhCurrent) WITH 5 DOWN:
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16
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VhNext = VhCurrent:NEXT-SIBLING.
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17
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cnt = cnt + 1.
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18
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19
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DISPLAY cnt + 0 "crt:" VhCurrent:NAME.
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20
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IF VALID-HANDLE(VhCurrent) THEN DO:
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21
|
/*only delete dynamic buffers*/
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22
|
IF VhCurrent:DYNAMIC /* shouldn't they all be dynamic ? */
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23
|
AND delete-it THEN DO:
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24
|
DISPLAY "deleting" VhCurrent:NAME.
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|
25
|
DELETE OBJECT VhCurrent:TABLE-HANDLE no-ERROR.
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26
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if (NOT ERROR-STATUS:ERROR) THEN
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27
|
DISPLAY "Deleted!".
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|
28
|
END.
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29
|
END.
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|
30
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VhCurrent = VhNext.
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|
31
|
END.
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|
32
|
MESSAGE cnt.
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|
33
|
END PROCEDURE.
|
|
34
|
|
|
35
|
PROCEDURE createSomeDynamicBuffer:
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|
36
|
DEFINE VARIABLE tth AS HANDLE NO-UNDO.
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|
37
|
DEFINE VARIABLE bh AS HANDLE NO-UNDO.
|
|
38
|
|
|
39
|
CREATE TEMP-TABLE tth.
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|
40
|
tth:CREATE-LIKE(BUFFER book:HANDLE).
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|
41
|
tth:ADD-NEW-FIELD("f1", "integer").
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|
42
|
tth:TEMP-TABLE-PREPARE("newBook").
|
|
43
|
|
|
44
|
bh = tth:DEFAULT-BUFFER-HANDLE.
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|
45
|
FOR EACH Book NO-LOCK:
|
|
46
|
bh:BUFFER-CREATE.
|
|
47
|
bh:BUFFER-COPY(BUFFER book:HANDLE).
|
|
48
|
END.
|
|
49
|
RUN pIterateBuffers(no).
|
|
50
|
END PROCEDURE.
|
|
51
|
|
|
52
|
PROCEDURE createSomeDynamicBuffer2:
|
|
53
|
DEFINE VARIABLE tth2 AS HANDLE NO-UNDO.
|
|
54
|
DEFINE VARIABLE bh2 AS HANDLE NO-UNDO.
|
|
55
|
|
|
56
|
CREATE TEMP-TABLE tth2.
|
|
57
|
tth2:CREATE-LIKE(BUFFER book:HANDLE).
|
|
58
|
tth2:ADD-NEW-FIELD("f2", "character").
|
|
59
|
tth2:TEMP-TABLE-PREPARE("newBook2").
|
|
60
|
|
|
61
|
bh2 = tth2:DEFAULT-BUFFER-HANDLE.
|
|
62
|
FOR EACH Book NO-LOCK:
|
|
63
|
bh2:BUFFER-CREATE.
|
|
64
|
bh2:BUFFER-COPY(BUFFER book:HANDLE).
|
|
65
|
END.
|
|
66
|
END PROCEDURE.
|
|
67
|
|
|
68
|
DEFINE VARIABLE t2 AS HANDLE.
|
|
69
|
PROCEDURE defineHandleToTempTable:
|
|
70
|
t2 = BUFFER tt0:HANDLE.
|
|
71
|
FIND LAST tt0.
|
|
72
|
END PROCEDURE.
|
|
73
|
|
|
74
|
DEFINE VARIABLE t3 AS HANDLE.
|
|
75
|
PROCEDURE createHandleToTempTable:
|
|
76
|
CREATE BUFFER t3 FOR TABLE "tt0" BUFFER-NAME "t3h".
|
|
77
|
/* t3:FIND-FIRST(). */
|
|
78
|
DISPLAY "[[[" t3:TABLE-HANDLE:NAME "]]]".
|
|
79
|
END PROCEDURE.
|
|
80
|
|
|
81
|
DEFINE VARIABLE b2 AS HANDLE.
|
|
82
|
PROCEDURE defineHandleToPermanentTable:
|
|
83
|
b2 = BUFFER book:HANDLE.
|
|
84
|
FIND LAST book.
|
|
85
|
END PROCEDURE.
|
|
86
|
|
|
87
|
DEFINE VARIABLE b3 AS HANDLE.
|
|
88
|
PROCEDURE createHandleToPermanentTable:
|
|
89
|
CREATE BUFFER b3 FOR TABLE "book" BUFFER-NAME "b3h".
|
|
90
|
b3:FIND-FIRST().
|
|
91
|
END PROCEDURE.
|
|
92
|
|
|
93
|
DEFINE BUFFER sb FOR book.
|
|
94
|
PROCEDURE defineBufferForPermanentTable:
|
|
95
|
FIND FIRST sb.
|
|
96
|
FIND NEXT sb.
|
|
97
|
END PROCEDURE.
|
|
98
|
|
|
99
|
RUN defineHandleToTempTable. /* t2 / tt0 */
|
|
100
|
RUN createHandleToTempTable. /* t3 / t3h <- 1 */
|
|
101
|
RUN defineHandleToPermanentTable. /* b2 / book */
|
|
102
|
RUN createHandleToPermanentTable. /* b3 / b3h <- 4 */
|
|
103
|
RUN defineBufferForPermanentTable. /* sb / book */
|
|
104
|
DISPLAY sb.isbn STRING(b2::isbn) STRING(b3::isbn) b3:NAME.
|
|
105
|
RUN createSomeDynamicBuffer. /* newBook <- 2 */
|
|
106
|
RUN createSomeDynamicBuffer2. /* newBook2 <- 3 */
|
|
107
|
RUN createSomeDynamicBuffer2. /* newBook2 <- 3 */
|
|
108
|
|
|
109
|
RUN pIterateBuffers(yes).
|
|
110
|
RUN pIterateBuffers(yes).
|
|
111
|
MESSAGE "Done.".
|
|
112
|
|
|
113
|
/*
|
|
114
|
Expected output:
|
|
115
|
┌──────────────────────────────────────────┐
|
|
116
|
│ISBN │
|
|
117
|
│─────────────── │
|
|
118
|
│111-11-1 tt 111-11-0 b3h │
|
|
119
|
└──────────────────────────────────────────┘
|
|
120
|
┌───────────────────────────────────────────────────┐
|
|
121
|
│ 1 crt: t3h │
|
|
122
|
│ 2 crt: newBook │
|
|
123
|
│ 3 crt: b3h │
|
|
124
|
│ │
|
|
125
|
│ │
|
|
126
|
└───────────────────────────────────────────────────┘
|
|
127
|
┌───────────────────────────────────────────────────┐
|
|
128
|
│ 1 crt: t3h deleting t3h Deleted!│
|
|
129
|
│ 2 crt: newBook deleting newBook Deleted!│
|
|
130
|
│ 3 crt: newBook2 deleting newBook2 Deleted!│
|
|
131
|
│ 4 crt: newBook2 deleting newBook2 Deleted!│
|
|
132
|
│ 5 crt: b3h deleting b3h │
|
|
133
|
└───────────────────────────────────────────────────┘
|
|
134
|
┌───────────────────────────────────────────────────┐
|
|
135
|
│ 1 crt: t3h │
|
|
136
|
│ 2 crt: b3h │
|
|
137
|
│ │
|
|
138
|
│ │
|
|
139
|
│ │
|
|
140
|
└───────────────────────────────────────────────────┘
|
|
141
|
|
|
142
|
3
|
|
143
|
5
|
|
144
|
2
|
|
145
|
Done.
|
|
146
|
*/
|