Nested Search

Search can be nested. For example, search for some topics, then form a new search for each topic found in the first search. The idea is to build the nested search string using a formatted search in the first search.

Here is an example. We want to search for topics, do a nested search with each hit, and show the result as nested bullets. Parameters like scope="text" regex="on" nosearch="on" nototal="on" are omitted for simplicity.

• First search:
  • %SEARCH{ "freedom" format="   * $topic" }%
• Second search. For each hit we want this search:
  • %SEARCH{ "(topic of first search)" format="      * $topic" }%
• Now we nest the searches. We need to escape the second search, e.g. the first search will build a valid second search string:
  • %SEARCH{ "freedom" format="   * $topic: $n$percntSEARCH{ \"$topic\" format=\"      * $dollartopic" }$nop%\" }%

Note that we escape the second search so that it does not get evaluated by the first search:

• $percnt to escape the leading percent of the second search
• \" to escape the qouble quotes
• $dollar to escape the $ of $topic
• $nop to escape the }% sequence

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Nested Search

Search can be nested. For example, search for some topics, then form a new search for each topic found in the first search. The idea is to build the nested search string using a formatted search in the first search.

Here is an example. Let's search for all topics that contain the word "culture" (first search), and let's find out where each topic found is linked from (second search).

• First search:
  • %SEARCH{ "culture" format="   * $topic is referenced by: (list all references)" nosearch="on" nototal="on" }%
• Second search. For each hit we want this search:
  • %SEARCH{ "(topic found in first search)" format="   $topic" nosearch="on" nototal="on" }%
• Now let's nest the two. We need to escape the second search, e.g. the first search will build a valid second search string. Note that we escape the second search so that it does not get evaluated prematurely by the first search:
  • Use $percnt to escape the leading percent of the second search
  • Use \" to escape the double quotes
  • Use $dollar to escape the $ of $topic
  • Use $nop to escape the }% sequence

Write this:

%SEARCH{ "culture" format="   * $topic is referenced by:$n      * $percntSEARCH{ \"$topic\" format=\"   $dollartopic\" nosearch=\"on\" nototal=\"on\" }$nop%" nosearch="on" nototal="on" }%

To get this:

• FormattedSearch is referenced by:
  • ManagingWebs TWikiDocumentation TWikiForms TWikiFuncModule TWikiHistory TWikiUpgradeGuide TWikiUpgradeTo01Dec2001 TWikiVariables TextFormattingRules WelcomeGuest
• TWikiAccessControl is referenced by:
  • FileAttachment MainFeatures ManagingTopics TWikiAccessControl TWikiDocumentation TWikiForms TWikiFuncModule TWikiHistory TWikiPreferences TWikiTopics TWikiTutorial TWikiUpgradeTo01Dec2000 TWikiUpgradeTo01Dec2001 TWikiUserAuthentication TWikiVariables WebPreferences WelcomeGuest WikiCulture WikiWord
• TWikiSite is referenced by:
  • InstantEnhancements InterwikiPlugin ManagingWebs StartingPoints TWikiDocumentation TWikiGlossary TWikiInstallationGuide TWikiPreferences TWikiRegistration TWikiRegistrationPub TWikiSite TWikiSiteTools TWikiTopics TWikiTutorial TWikiUpgradeTo01Dec2000 WabiSabi WebHome WebSiteTools WelcomeGuest WhatIsWikiWiki WikiCulture WikiReferences
• WabiSabi is referenced by:
  • AppendixFileSystem TWikiSite WabiSabi WikiCulture
• WelcomeGuest is referenced by:
  • StartingPoints TWikiSite TWikiUpgradeTo01Dec2000 WebHome WebPreferences WhatIsWikiWiki WikiCulture YouAreHere
• WikiCulture is referenced by:
  • TWikiAccessControl TWikiSite WabiSabi WelcomeGuest