Difference between revisions of "Talk:Test includematch"

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and you still got a result because the "Independance day" column is searched. Shouldn't only the "Languages" column being searched? --[[User:Mark P.|Mark P.]] 23:25, 22 November 2007 (CET)
 
and you still got a result because the "Independance day" column is searched. Shouldn't only the "Languages" column being searched? --[[User:Mark P.|Mark P.]] 23:25, 22 November 2007 (CET)
  
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== Explanation ==
+
== Reply and Explanation ==
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No, this is not a bug. As explained [[titlematch]] applies the regep to the whole string used for the temlate´s invocation. It is your responsibility to define the pattern in a a way that in will only match the contents youz are seeking for.
 
  
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In the above example the ".*" before ''English'' or before ''1961'' causes the surprising behaviour. ".*" means anything, even a pipe separator. So the pattern simply looks if SOMEHWERE in the complete invocatrion string it can find the literal ''languages'' and SOMEWHERE afer that place ''1961'' can be found.
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First, the DPL statement above could be written more elegantly, using the [[table]] command. The [[table]] command was invented recently to facilitate standard view definitions.
  
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Replace '.*' by '[^|]*' and it will do what  you expect because now the regexp looks for ''languages'' and then it skips all non-fitting characters EXCEPT the pipe symbol.
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Second the regexep uses ".*" before 'English' or '1961'. This means that also pipe characters will be skipped - so '1961' will be accepted if it occurs ANYWHERE AFTER 'languages'. What you wnat, however, is to stop the pattern matching at field boundaries /(i.e. at pipoe characters). Therefore you must use ''[^|]*'' instead of ''.*'' which will match alöl characters EXCEPT The field delimiting pipe charcter.
  
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Note: If you use the #dpl parser function notation you must use an octal notation for the pipe or escape it vi a media wiki template which produces a pipe.
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<pre><nowiki>
 +
<dpl>
 +
category=African Country
 +
namespace=
 +
include={African Country}:languages:government_type:area:population:gdp:independence_day
 +
includematch=/languages\s*=\s*[^|]*English/s
 +
table=class=sortable,Name,Languages,Government,Area,Population,GDP,Independence Day
 +
resultsheader=Number of data = %PAGES%\n
 +
  noresultsheader= no matching country found.\n
 +
</dpl>
 +
</nowiki></pre>
  
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Example:
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And here is the result with 'English':
  
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looking for 'English'
 
 
<dpl>
 
<dpl>
−
category=African Country
+
category=African Country
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includepage={African Country}:languages,{African Country}:government_type,{African Country}:area,{African Country}:population,{African Country}:gdp,{African Country}:independence_day
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namespace=
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mode=userformat
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include={African Country}:languages:government type:area:population:gdp:independence_day
−
listseparators=¶{|class=sortable ¶!No ¶! Name ¶! Languages ¶! Government ¶! Area ¶! Population ¶! GDP ¶! Independence Day , ¶|-¶|%NR%¶|[[%PAGE%]] , ,¶|}
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includematch=/languages\s*=\s*[^|]*English/s
−
secseparators=¶|
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table=class=sortable,Name,Languages,Government,Area,Population,GDP,Independence Day
−
resultsheader=Number of data = %PAGES%
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resultsheader=Number of data = %PAGES%\n
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includematch=/languages\s*=\s*[^|]*English.*/s
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noresultsheader= no matching country found.\n
 
</dpl>
 
</dpl>
  
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looking for '1961'
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.. and with '1961'
 +
 
 
<dpl>
 
<dpl>
−
category=African Country
+
category=African Country
−
includepage={African Country}:languages,{African Country}:government_type,{African Country}:area,{African Country}:population,{African Country}:gdp,{African Country}:independence_day
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namespace=
−
mode=userformat
+
include={African Country}:languages:government_type:area:population:gdp:independence_day
−
listseparators=¶{|class=sortable ¶!No ¶! Name ¶! Languages ¶! Government ¶! Area ¶! Population ¶! GDP ¶! Independence Day , ¶|-¶|%NR%¶|[[%PAGE%]] , ,¶|}
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includematch=/languages\s*=\s*[^|]*1961/s
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secseparators=¶|
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table=class=sortable,Name,Languages,Government,Area,Population,GDP,Independence Day
−
resultsheader=Number of data = %PAGES%
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resultsheader=Number of data = %PAGES%\n
−
includematch=/languages\s*=\s*[^|]*1961.*/s
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noresultsheader= no matching country found.\n
 
</dpl>
 
</dpl>
  
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with parser function syntax looking for 'English'
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Note: If you use the #dpl parser function notation you must not use the pipe directly because it would be misperceived as a field demiter for #dpl itself. IN that case you should use something like ''<nowiki>[^{{!}}]*</nowiki>'' (assuming that there is a template called ''!'' which retuzrn s a single pipe character.
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{{#dpl:
 
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|category=African Country
 
−
|namespace=
 
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|include={African Country}:languages:government_type:area:population:gdp:independence_day
 
−
|includematch=/languages\s*=\s*[^{{!}}]*English/s
 
−
|table=class=sortable,Name,Languages,Government,Area,Population,GDP,Independence Day
 
−
|resultsheader=Number of data = %PAGES%\n
 
−
}}
 

Revision as of 13:06, 24 November 2007

Includematch searches all fields instead of just one (bug?)

I tested the following example and noticed strange includematch behaviour. 

<dpl>
category=African Country
includepage={African Country}:languages,{African Country}:government_type,{African Country}:area,{African Country}:population,{African Country}:gdp,{African Country}:independence_day
mode=userformat
listseparators=¶{|class=sortable ¶!No ¶! Name ¶! Languages ¶! Government ¶! Area ¶! Population ¶! GDP ¶! Independence Day , ¶|-¶|%NR%¶|[[%PAGE%]] , ,¶|}
secseparators=¶|
resultsheader=Number of data = %PAGES%
includematch=/languages\s*=\s*.*English.*/s
</dpl>

Try for example replacing 

includematch=/languages\s*=\s*.*English.*/s

with 

includematch=/languages\s*=\s*.*1961.*/s

and you still got a result because the "Independance day" column is searched. Shouldn't only the "Languages" column being searched? --Mark P. 23:25, 22 November 2007 (CET)

Reply and Explanation

First, the DPL statement above could be written more elegantly, using the table command. The table command was invented recently to facilitate standard view definitions.

Second the regexep uses ".*" before 'English' or '1961'. This means that also pipe characters will be skipped - so '1961' will be accepted if it occurs ANYWHERE AFTER 'languages'. What you wnat, however, is to stop the pattern matching at field boundaries /(i.e. at pipoe characters). Therefore you must use [^|]* instead of .* which will match alöl characters EXCEPT The field delimiting pipe charcter. 

<dpl>
 category=African Country
 namespace=
 include={African Country}:languages:government_type:area:population:gdp:independence_day
 includematch=/languages\s*=\s*[^|]*English/s
 table=class=sortable,Name,Languages,Government,Area,Population,GDP,Independence Day
 resultsheader=Number of data = %PAGES%\n
 noresultsheader= no matching country found.\n
</dpl>

And here is the result with 'English':

Number of data = 3

Name Languages Government Area Population GDP Independence Day
DPL Example 015
Republic of Cameroon French,English 183,568 sq mi 17,795,000 $43.196 billion 01/10/1961
United Republic of Tanzania Swahili, English 364,898 sq mi 37,849,133 $27.12 billion 26/04/1964

.. and with '1961'

Number of data = 1

Name Languages Government Area Population GDP Independence Day
DPL Example 015

Note: If you use the #dpl parser function notation you must not use the pipe directly because it would be misperceived as a field demiter for #dpl itself. IN that case you should use something like [^{{!}}]* (assuming that there is a template called ! which retuzrn s a single pipe character.

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