disallow search for partials without address

Very frequent partial terms take too long to look up and
do not return any valuable results unless the search is
further narrowed down by an address.

diff --git a/lib-php/SearchDescription.php b/lib-php/SearchDescription.php
index ee8bbc0c9be81304c9531760aac3751366a6a689..6eaf0d9af563f1a2bc04bce510b0acf8d942772b 100644 (file)
--- a/lib-php/SearchDescription.php
+++ b/lib-php/SearchDescription.php
@@ -19,6 +19,8 @@ class SearchDescription
     private $aName = array();
     /// True if the name is rare enough to force index use on name.
     private $bRareName = false;
+    /// True if the name requires to be accompanied by address terms.
+    private $bNameNeedsAddress = false;
     /// List of word ids making up the address of the object.
     private $aAddress = array();
     /// List of word ids that appear in the name but should be ignored.
@@ -113,6 +115,9 @@ class SearchDescription
                 return false;
             }
         }
+        if ($this->bNameNeedsAddress && empty($this->aAddress)) {
+            return false;
+        }
 
         return true;
     }
@@ -231,6 +236,7 @@ class SearchDescription
     {
         $this->aName[$iId] = $iId;
         $this->bRareName = $bRareName;
+        $this->bNeedsAddress = false;
     }
 
     /**
@@ -240,11 +246,19 @@ class SearchDescription
      * @param integer iID            ID of term to add.
      * @param bool bSearchable       Term should be used to search for result
      *                               (i.e. term is not a stop word).
+     * @param bool bNeedsAddress     True if the term is too unspecific to be used
+     *                               in a stand-alone search without an address
+     *                               to narrow down the search.
      * @param integer iPhraseNumber  Index of phrase, where the partial term
      *                               appears.
      */
-    public function addPartialNameToken($iId, $bSearchable, $iPhraseNumber)
+    public function addPartialNameToken($iId, $bSearchable, $bNeedsAddress, $iPhraseNumber)
     {
+        if (empty($this->aName)) {
+            $this->bNameNeedsAddress = $bNeedsAddress;
+        } else {
+            $this->bNameNeedsAddress |= $bNeedsAddress;
+        }
         if ($bSearchable) {
             $this->aName[$iId] = $iId;
         } else {

diff --git a/lib-php/TokenPartial.php b/lib-php/TokenPartial.php
index 131bb2a3b48a52484df6817e1e39deeb8d3db90b..112154b2cf59526cf8432be726a4471ceb772b9c 100644 (file)
--- a/lib-php/TokenPartial.php
+++ b/lib-php/TokenPartial.php
@@ -90,6 +90,7 @@ class Partial
             $oNewSearch->addPartialNameToken(
                 $this->iId,
                 $this->iSearchNameCount < CONST_Max_Word_Frequency,
+                $this->iSearchNameCount > CONST_Search_NameOnlySearchFrequencyThreshold,
                 $oPosition->getPhrase()
             );