--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/search/search.install	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,153 @@
+<?php
+// $Id: search.install,v 1.14 2007/12/28 10:53:27 dries Exp $
+
+/**
+ * Implementation of hook_install().
+ */
+function search_install() {
+  // Create tables.
+  drupal_install_schema('search');
+}
+
+/**
+ * Implementation of hook_uninstall().
+ */
+function search_uninstall() {
+  // Remove tables.
+  drupal_uninstall_schema('search');
+
+  variable_del('minimum_word_size');
+  variable_del('overlap_cjk');
+  variable_del('search_cron_limit');
+}
+
+/**
+ * Implementation of hook_schema().
+ */
+function search_schema() {
+  $schema['search_dataset'] = array(
+    'description' => t('Stores items that will be searched.'),
+    'fields' => array(
+      'sid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('Search item ID, e.g. node ID for nodes.'),
+      ),
+      'type' => array(
+        'type' => 'varchar',
+        'length' => 16,
+        'not null' => FALSE,
+        'description' => t('Type of item, e.g. node.'),
+      ),
+      'data' => array(
+        'type' => 'text',
+        'not null' => TRUE,
+        'size' => 'big',
+        'description' => t('List of space-separated words from the item.'),
+      ),
+      'reindex' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('Set to force node reindexing.'),
+      ),
+    ),
+    'unique keys' => array('sid_type' => array('sid', 'type')),
+  );
+
+  $schema['search_index'] = array(
+    'description' => t('Stores the search index, associating words, items and scores.'),
+    'fields' => array(
+      'word' => array(
+        'type' => 'varchar',
+        'length' => 50,
+        'not null' => TRUE,
+        'default' => '',
+        'description' => t('The {search_total}.word that is associated with the search item.'),
+      ),
+      'sid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('The {search_dataset}.sid of the searchable item to which the word belongs.'),
+      ),
+      'type' => array(
+        'type' => 'varchar',
+        'length' => 16,
+        'not null' => FALSE,
+        'description' => t('The {search_dataset}.type of the searchable item to which the word belongs.'),
+      ),
+      'score' => array(
+        'type' => 'float',
+        'not null' => FALSE,
+        'description' => t('The numeric score of the word, higher being more important.'),
+      ),
+    ),
+    'indexes' => array(
+      'sid_type' => array('sid', 'type'),
+      'word' => array('word')
+    ),
+    'unique keys' => array('word_sid_type' => array('word', 'sid', 'type')),
+  );
+
+  $schema['search_total'] = array(
+    'description' => t('Stores search totals for words.'),
+    'fields' => array(
+      'word' => array(
+        'description' => t('Primary Key: Unique word in the search index.'),
+        'type' => 'varchar',
+        'length' => 50,
+        'not null' => TRUE,
+        'default' => '',
+      ),
+      'count' => array(
+        'description' => t("The count of the word in the index using Zipf's law to equalize the probability distribution."),
+        'type' => 'float',
+        'not null' => FALSE,
+      ),
+    ),
+    'primary key' => array('word'),
+  );
+
+  $schema['search_node_links'] = array(
+    'description' => t('Stores items (like nodes) that link to other nodes, used to improve search scores for nodes that are frequently linked to.'),
+    'fields' => array(
+      'sid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('The {search_dataset}.sid of the searchable item containing the link to the node.'),
+      ),
+      'type' => array(
+        'type' => 'varchar',
+        'length' => 16,
+        'not null' => TRUE,
+        'default' => '',
+        'description' => t('The {search_dataset}.type of the searchable item containing the link to the node.'),
+      ),
+      'nid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('The {node}.nid that this item links to.'),
+      ),
+      'caption' => array(
+        'type' => 'text',
+        'size' => 'big',
+        'not null' => FALSE,
+        'description' => t('The text used to link to the {node}.nid.'),
+      ),
+    ),
+    'primary key' => array('sid', 'type', 'nid'),
+    'indexes' => array('nid' => array('nid')),
+  );
+
+  return $schema;
+}
+