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<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
/**
* Doctrine_Search
*
* @package Doctrine
* @subpackage Search
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @version $Revision$
* @link www.phpdoctrine.org
* @since 1.0
*/
class Doctrine_Search extends Doctrine_Record_Generator
{
const INDEX_FILES = 0;
const INDEX_TABLES = 1;
protected $_options = array('generateFiles' => false,
'analyzer' => 'Doctrine_Search_Analyzer_Standard',
'analyzer_options' => array(),
'type' => self::INDEX_TABLES,
'className' => '%CLASS%Index',
'generatePath' => false,
'table' => null,
'batchUpdates' => false,
'pluginTable' => false,
'fields' => array(),
'connection' => null,
'children' => array(),
'cascadeDelete' => true,
'appLevelDelete' => false);
/**
* __construct
*
* @param array $options
* @return void
*/
public function __construct(array $options)
{
$this->_options = Doctrine_Lib::arrayDeepMerge($this->_options, $options);
if ( ! isset($this->_options['analyzer'])) {
$this->_options['analyzer'] = 'Doctrine_Search_Analyzer_Standard';
}
if ( ! isset($this->_options['analyzer_options'])) {
$this->_options['analyzer_options'] = array();
}
$this->_options['analyzer'] = new $this->_options['analyzer']($this->_options['analyzer_options']);
}
public function buildTable()
{
$result = parent::buildTable();
if ( ! isset($this->_options['connection'])) {
$this->_options['connection'] = $this->_options['table']->getConnection();
}
return $result;
}
/**
* Searchable keyword search
*
* @param string $string Keyword string to search for
* @param Doctrine_Query $query Query object to alter. Adds where condition to limit the results using the search index
* @return array ids and relevancy
*/
public function search($string, $query = null)
{
$q = new Doctrine_Search_Query($this->_table);
if ($query instanceof Doctrine_Query) {
$q->query($string, false);
$newQuery = $query->copy();
$query->getSqlQuery();
$key = (array) $this->getOption('table')->getIdentifier();
$newQuery->addWhere($query->getRootAlias() . '.'.current($key).' IN (SQL:' . $q->getSqlQuery() . ')', $q->getParams());
return $newQuery;
} else {
$q->query($string);
return $this->_options['connection']->fetchAll($q->getSqlQuery(), $q->getParams());
}
}
/**
* analyze a text in the encoding format
*
* @param string $text
* @param string $encoding
* @return void
*/
public function analyze($text, $encoding = null)
{
return $this->_options['analyzer']->analyze($text, $encoding);
}
/**
* updateIndex
* updates the index
*
* @param Doctrine_Record $record
* @return integer
*/
public function updateIndex(array $data, $encoding = null)
{
$this->initialize($this->_options['table']);
$fields = $this->getOption('fields');
$class = $this->getOption('className');
$name = $this->getOption('table')->getComponentName();
$conn = $this->getOption('table')->getConnection();
$identifier = $this->_options['table']->getIdentifier();
$q = Doctrine_Core::getTable($class)
->createQuery()
->delete();
foreach ((array) $identifier as $id) {
$q->addWhere($id . ' = ?', array($data[$id]));
}
$q->execute();
if ($this->_options['batchUpdates'] === true) {
$index = new $class();
foreach ((array) $this->_options['table']->getIdentifier() as $id) {
$index->$id = $data[$id];
}
$index->save();
} else {
foreach ($fields as $field) {
$value = isset($data[$field]) ? $data[$field] : null;
$terms = $this->analyze($value, $encoding);
foreach ($terms as $pos => $term) {
$index = new $class();
$index->keyword = $term;
$index->position = $pos;
$index->field = $field;
foreach ((array) $this->_options['table']->getIdentifier() as $id) {
$index->$id = $data[$id];
}
$index->save();
$index->free(true);
}
}
}
}
/**
* readTableData
*
* @param mixed $limit
* @param mixed $offset
* @return Doctrine_Collection The collection of results
*/
public function readTableData($limit = null, $offset = null)
{
$this->initialize($this->_options['table']);
$conn = $this->_options['table']->getConnection();
$tableName = $this->_options['table']->getTableName();
$id = current($this->_options['table']->getIdentifierColumnNames());
$tableId = current($this->_table->getIdentifierColumnNames());
$query = 'SELECT * FROM ' . $conn->quoteIdentifier($tableName)
. ' WHERE ' . $conn->quoteIdentifier($id)
. ' IN (SELECT ' . $conn->quoteIdentifier($tableId)
. ' FROM ' . $conn->quoteIdentifier($this->_table->getTableName())
. ' WHERE keyword = \'\') OR ' . $conn->quoteIdentifier($id)
. ' NOT IN (SELECT ' . $conn->quoteIdentifier($tableId)
. ' FROM ' . $conn->quoteIdentifier($this->_table->getTableName()) . ')';
$query = $conn->modifyLimitQuery($query, $limit, $offset);
return $conn->fetchAll($query);
}
/**
* batchUpdateIndex
*
* @param mixed $limit
* @param mixed $offset
* @return void
*/
public function batchUpdateIndex($limit = null, $offset = null, $encoding = null)
{
$table = $this->_options['table'];
$this->initialize($table);
$id = current($table->getIdentifierColumnNames());
$class = $this->_options['className'];
$fields = $this->_options['fields'];
$conn = $this->_options['connection'];
for ($i = 0; $i < count($fields); $i++) {
$fields[$i] = $table->getColumnName($fields[$i], $fields[$i]);
}
$rows = $this->readTableData($limit, $offset);
$ids = array();
foreach ($rows as $row) {
$ids[] = $row[$id];
}
if (count($ids) > 0)
{
$placeholders = str_repeat('?, ', count($ids));
$placeholders = substr($placeholders, 0, strlen($placeholders) - 2);
$sql = 'DELETE FROM '
. $conn->quoteIdentifier($this->_table->getTableName())
. ' WHERE ' . $conn->quoteIdentifier($table->getIdentifier()) . ' IN (' . substr($placeholders, 0) . ')';
$conn->exec($sql, $ids);
}
foreach ($rows as $row) {
$conn->beginTransaction();
try {
foreach ($fields as $field) {
$data = $row[$field];
$terms = $this->analyze($data, $encoding);
foreach ($terms as $pos => $term) {
$index = new $class();
$index->keyword = $term;
$index->position = $pos;
$index->field = $field;
foreach ((array) $table->getIdentifier() as $identifier) {
$index->$identifier = $row[$table->getColumnName($identifier, $identifier)];
}
$index->save();
$index->free(true);
}
}
$conn->commit();
} catch (Doctrine_Exception $e) {
$conn->rollback();
throw $e;
}
}
}
/**
* buildDefinition
*
* @return void
*/
public function setTableDefinition()
{
if ( ! isset($this->_options['table'])) {
throw new Doctrine_Record_Exception("Unknown option 'table'.");
}
$componentName = $this->_options['table']->getComponentName();
$className = $this->getOption('className');
$autoLoad = (bool) ($this->_options['generateFiles']);
if (class_exists($className, $autoLoad)) {
return false;
}
// move any columns currently in the primary key to the end
// So that 'keyword' is the first field in the table
$previousIdentifier = array();
foreach ($this->_table->getIdentifier() as $name) {
$previousIdentifier[$name] = $this->_table->getColumnDefinition($name);
$this->_table->removeColumn($name);
}
$columns = array('keyword' => array('type' => 'string',
'length' => 200,
'primary' => true,
),
'field' => array('type' => 'string',
'length' => 50,
'primary' => true),
'position' => array('type' => 'integer',
'length' => 8,
'primary' => true,
));
$this->hasColumns($columns);
$this->hasColumns($previousIdentifier);
}
}
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