Version 1

[yaffs-website] / web / core / modules / search / src / Plugin / views / argument / Search.php

diff --git a/web/core/modules/search/src/Plugin/views/argument/Search.php b/web/core/modules/search/src/Plugin/views/argument/Search.php
new file mode 100644 (file)
index 0000000..82afbbf
--- /dev/null
+++ b/web/core/modules/search/src/Plugin/views/argument/Search.php
@@ -0,0 +1,131 @@
+<?php
+
+namespace Drupal\search\Plugin\views\argument;
+
+use Drupal\views\Plugin\views\argument\ArgumentPluginBase;
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+use Drupal\views\ViewExecutable;
+use Drupal\views\Views;
+
+/**
+ * Argument handler for search keywords.
+ *
+ * @ingroup views_argument_handlers
+ *
+ * @ViewsArgument("search")
+ */
+class Search extends ArgumentPluginBase {
+
+  /**
+   * A search query to use for parsing search keywords.
+   *
+   * @var \Drupal\search\ViewsSearchQuery
+   */
+  protected $searchQuery = NULL;
+
+  /**
+   * The search type name (value of {search_index}.type in the database).
+   *
+   * @var string
+   */
+  protected $searchType;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
+    parent::init($view, $display, $options);
+
+    $this->searchType = $this->definition['search_type'];
+  }
+
+  /**
+   * Sets up and parses the search query.
+   *
+   * @param string $input
+   *   The search keywords entered by the user.
+   */
+  protected function queryParseSearchExpression($input) {
+    if (!isset($this->searchQuery)) {
+      $this->searchQuery = db_select('search_index', 'i', ['target' => 'replica'])->extend('Drupal\search\ViewsSearchQuery');
+      $this->searchQuery->searchExpression($input, $this->searchType);
+      $this->searchQuery->publicParseSearchExpression();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query($group_by = FALSE) {
+    $required = FALSE;
+    $this->queryParseSearchExpression($this->argument);
+    if (!isset($this->searchQuery)) {
+      $required = TRUE;
+    }
+    else {
+      $words = $this->searchQuery->words();
+      if (empty($words)) {
+        $required = TRUE;
+      }
+    }
+    if ($required) {
+      if ($this->operator == 'required') {
+        $this->query->addWhere(0, 'FALSE');
+      }
+    }
+    else {
+      $search_index = $this->ensureMyTable();
+
+      $search_condition = db_and();
+
+      // Create a new join to relate the 'search_total' table to our current 'search_index' table.
+      $definition = [
+        'table' => 'search_total',
+        'field' => 'word',
+        'left_table' => $search_index,
+        'left_field' => 'word',
+      ];
+      $join = Views::pluginManager('join')->createInstance('standard', $definition);
+      $search_total = $this->query->addRelationship('search_total', $join, $search_index);
+
+      // Add the search score field to the query.
+      $this->search_score = $this->query->addField('', "$search_index.score * $search_total.count", 'score', ['function' => 'sum']);
+
+      // Add the conditions set up by the search query to the views query.
+      $search_condition->condition("$search_index.type", $this->searchType);
+      $search_dataset = $this->query->addTable('node_search_dataset');
+      $conditions = $this->searchQuery->conditions();
+      $condition_conditions =& $conditions->conditions();
+      foreach ($condition_conditions  as $key => &$condition) {
+        // Make sure we just look at real conditions.
+        if (is_numeric($key)) {
+          // Replace the conditions with the table alias of views.
+          $this->searchQuery->conditionReplaceString('d.', "$search_dataset.", $condition);
+        }
+      }
+      $search_conditions =& $search_condition->conditions();
+      $search_conditions = array_merge($search_conditions, $condition_conditions);
+
+      // Add the keyword conditions, as is done in
+      // SearchQuery::prepareAndNormalize(), but simplified because we are
+      // only concerned with relevance ranking so we do not need to normalize.
+      $or = db_or();
+      foreach ($words as $word) {
+        $or->condition("$search_index.word", $word);
+      }
+      $search_condition->condition($or);
+
+      // Add the GROUP BY and HAVING expressions to the query.
+      $this->query->addWhere(0, $search_condition);
+      $this->query->addGroupBy("$search_index.sid");
+      $matches = $this->searchQuery->matches();
+      $placeholder = $this->placeholder();
+      $this->query->addHavingExpression(0, "COUNT(*) >= $placeholder", [$placeholder => $matches]);
+    }
+
+    // Set to NULL to prevent PDO exception when views object is cached
+    // and to clear out memory.
+    $this->searchQuery = NULL;
+  }
+
+}