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1
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/* initial cleanup */
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2
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for each novel:
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3
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delete novel.
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4
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end.
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5
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6
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/* populating a record so that the length of teh field are exponentially bigger */
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7
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create novel.
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8
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chapter1 = "0123456789 234567890 234567890".
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9
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chapter2 = chapter1 + chapter1.
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10
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chapter3 = chapter2 + chapter2.
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11
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chapter4 = chapter3 + chapter3.
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12
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chapter5 = chapter4 + chapter4.
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13
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chapter6 = chapter5 + chapter5.
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14
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chapter7 = chapter1 + chapter2 + chapter3 + chapter4 + chapter5 + chapter6.
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15
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16
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/* 1890 bytes in both indexes */
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17
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display "current index size : "
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18
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length(chapter1) + length(chapter2) + length(chapter3) +
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19
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length(chapter4) + length(chapter5) + length(chapter6)
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20
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length(chapter7) skip.
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21
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22
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23
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define variable tmp as char no-undo.
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24
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tmp = chapter1.
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25
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26
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/* increase the length of the smaller field until error occurs */
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27
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repeat while true on error undo, leave:
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28
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/* print out the expected index size for the record */
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29
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display tmp
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30
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length(tmp) + length(chapter2) + length(chapter3) +
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31
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length(chapter4) + length(chapter5) + length(chapter6).
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32
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tmp = tmp + "x".
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33
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34
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/* compute the max for composed (chapter1..6) index */
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35
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assign chapter1 = tmp no-error.
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36
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37
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IF ERROR-STATUS:ERROR OR ERROR-STATUS:NUM-MESSAGES > 0 THEN DO:
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38
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Display ERROR-STATUS:NUM-MESSAGES + 0.
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39
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leave.
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40
|
ENd.
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41
|
end.
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42
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display tmp length(tmp) skip.
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43
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44
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tmp = chapter7.
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45
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repeat while true on error undo, leave:
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46
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/* print out the expected index size for the record */
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47
|
display tmp length(tmp).
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48
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tmp = tmp + "x".
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49
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50
|
/* compute the max for composed (chapter1..6) index */
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51
|
assign chapter7 = tmp no-error.
|
|
52
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53
|
IF ERROR-STATUS:ERROR OR ERROR-STATUS:NUM-MESSAGES > 0 THEN DO:
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54
|
Display ERROR-STATUS:NUM-MESSAGES + 0.
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55
|
leave.
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56
|
ENd.
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57
|
end.
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58
|
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59
|
display "maximum index size : "
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|
60
|
length(chapter1) + length(chapter2) + length(chapter3) +
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61
|
length(chapter4) + length(chapter5) + length(chapter6) label "compose index"
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62
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length(chapter7) label "single-field index" skip.
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63
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