mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-11-24 06:22:08 +03:00
111 lines
3.3 KiB
PHP
111 lines
3.3 KiB
PHP
<?php
|
|
/**
|
|
* SPDX-License-Identifier: GPL-2.0-only
|
|
*
|
|
* This file is part of Nominatim. (https://nominatim.org)
|
|
*
|
|
* Copyright (C) 2022 by the Nominatim developer community.
|
|
* For a full list of authors see the git log.
|
|
*/
|
|
|
|
namespace Nominatim\Token;
|
|
|
|
/**
|
|
* A standard word token.
|
|
*/
|
|
class Word
|
|
{
|
|
/// Database word id, if applicable.
|
|
private $iId;
|
|
/// Number of appearances in the database.
|
|
private $iSearchNameCount;
|
|
/// Number of terms in the word.
|
|
private $iTermCount;
|
|
|
|
public function __construct($iId, $iSearchNameCount, $iTermCount)
|
|
{
|
|
$this->iId = $iId;
|
|
$this->iSearchNameCount = $iSearchNameCount;
|
|
$this->iTermCount = $iTermCount;
|
|
}
|
|
|
|
public function getId()
|
|
{
|
|
return $this->iId;
|
|
}
|
|
|
|
/**
|
|
* Check if the token can be added to the given search.
|
|
* Derive new searches by adding this token to an existing search.
|
|
*
|
|
* @param object $oSearch Partial search description derived so far.
|
|
* @param object $oPosition Description of the token position within
|
|
the query.
|
|
*
|
|
* @return True if the token is compatible with the search configuration
|
|
* given the position.
|
|
*/
|
|
public function isExtendable($oSearch, $oPosition)
|
|
{
|
|
return !$oPosition->isPhrase('country');
|
|
}
|
|
|
|
/**
|
|
* Derive new searches by adding this token to an existing search.
|
|
*
|
|
* @param object $oSearch Partial search description derived so far.
|
|
* @param object $oPosition Description of the token position within
|
|
the query.
|
|
*
|
|
* @return SearchDescription[] List of derived search descriptions.
|
|
*/
|
|
public function extendSearch($oSearch, $oPosition)
|
|
{
|
|
// Full words can only be a name if they appear at the beginning
|
|
// of the phrase. In structured search the name must forcably in
|
|
// the first phrase. In unstructured search it may be in a later
|
|
// phrase when the first phrase is a house number.
|
|
if ($oSearch->hasName()
|
|
|| !($oPosition->isFirstPhrase() || $oPosition->isPhrase(''))
|
|
) {
|
|
if ($this->iTermCount > 1
|
|
&& ($oPosition->isPhrase('') || !$oPosition->isFirstPhrase())
|
|
) {
|
|
$oNewSearch = $oSearch->clone(1);
|
|
$oNewSearch->addAddressToken($this->iId);
|
|
|
|
return array($oNewSearch);
|
|
}
|
|
} elseif (!$oSearch->hasName(true)) {
|
|
$oNewSearch = $oSearch->clone(1);
|
|
$oNewSearch->addNameToken(
|
|
$this->iId,
|
|
CONST_Search_NameOnlySearchFrequencyThreshold
|
|
&& $this->iSearchNameCount
|
|
< CONST_Search_NameOnlySearchFrequencyThreshold
|
|
);
|
|
|
|
return array($oNewSearch);
|
|
}
|
|
|
|
return array();
|
|
}
|
|
|
|
public function debugInfo()
|
|
{
|
|
return array(
|
|
'ID' => $this->iId,
|
|
'Type' => 'word',
|
|
'Info' => array(
|
|
'count' => $this->iSearchNameCount,
|
|
'terms' => $this->iTermCount
|
|
)
|
|
);
|
|
}
|
|
|
|
public function debugCode()
|
|
{
|
|
return 'W';
|
|
}
|
|
}
|