Managed_DataObject initial sketches (pulling Drupal-style schema def into the data that DB_DataObject and Memcached_DataObject use; not yet functional. Converted OStatus_profile for demo.)
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Brion Vibber
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156
classes/Managed_DataObject.php
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156
classes/Managed_DataObject.php
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<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010, StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Wrapper for Memcached_DataObject which knows its own schema definition.
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* Builds its own damn settings from a schema definition.
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*
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* @author brion
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*/
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class Managed_DataObject extends Memcached_DataObject
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{
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/**
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* The One True Thingy that must be defined and declared.
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*/
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public static abstract function schemaDef();
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/**
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* get/set an associative array of table columns
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*
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* @access public
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* @return array (associative)
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*/
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function table()
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{
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$table = self::schemaDef();
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return array_map(array($this, 'columnBitmap'), $table['fields']);
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}
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/**
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* get/set an array of table primary keys
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*
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* Key info is pulled from the table definition array.
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*
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* @access private
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* @return array
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*/
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function keys()
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{
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return array_keys($this->keyTypes());
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}
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/**
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* Get a sequence key
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*
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* Returns the first serial column defined in the table, if any.
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*
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* @access private
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* @return array (column,use_native,sequence_name)
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*/
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function sequenceKey()
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{
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$table = self::schemaDef();
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foreach ($table['fields'] as $name => $column) {
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if ($column['type'] == 'serial') {
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// We have a serial/autoincrement column.
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// Declare it to be a native sequence!
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return array($name, true, false);
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}
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}
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// No sequence key on this table.
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return array(false, false, false);
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}
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/**
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* Return key definitions for DB_DataObject and Memcache_DataObject.
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*
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* DB_DataObject needs to know about keys that the table has; this function
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* defines them.
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*
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* @return array key definitions
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*/
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function keyTypes()
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{
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$keys = array();
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$table = self::schemaDef();
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if (!empty($table['unique keys'])) {
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foreach ($table['unique keys'] as $idx => $fields) {
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foreach ($fields as $name) {
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$keys[$name] = 'U';
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}
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}
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}
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if (!empty($table['primary key'])) {
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foreach ($table['primary key'] as $name) {
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$keys[$name] = 'K';
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}
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}
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return $keys;
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}
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/**
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* Build the appropriate DB_DataObject bitfield map for this field.
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*
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* @param array $column
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* @return int
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*/
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function columnBitmap($column)
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{
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$type = 0;
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switch ($column['type']) {
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case 'int':
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case 'serial':
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case 'numeric':
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// Doesn't need quoting.
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$type |= DB_DATAOBJECT_INT;
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break;
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default:
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// Value needs quoting in SQL literal statements.
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$type |= DB_DATAOBJECT_STR;
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}
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switch ($column['type']) {
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case 'blob':
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$type |= DB_DATAOBJECT_BLOB;
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break;
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case 'text':
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$type |= DB_DATAOBJECT_TXT;
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break;
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case 'datetime':
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$type |= DB_DATAOBJECT_DATE;
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$type |= DB_DATAOBJECT_TIME;
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break;
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case 'timestamp':
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$type |= DB_DATAOBJECT_MYSQLTIMESTAMP;
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break;
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}
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if (!empty($column['not null'])) {
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$type |= DB_DATAOBJECT_NOTNULL;
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}
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return $type;
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}
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}
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@ -22,7 +22,7 @@
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* @maintainer Brion Vibber <brion@status.net>
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*/
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class Ostatus_profile extends Memcached_DataObject
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class Ostatus_profile extends Managed_DataObject
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{
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public $__table = 'ostatus_profile';
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@ -44,77 +44,35 @@ class Ostatus_profile extends Memcached_DataObject
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}
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/**
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* return table definition for DB_DataObject
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*
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* DB_DataObject needs to know something about the table to manipulate
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* instances. This method provides all the DB_DataObject needs to know.
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* Return table definition for Schema setup and DB_DataObject usage.
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*
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* @return array array of column definitions
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*/
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function table()
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{
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return array('uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
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'profile_id' => DB_DATAOBJECT_INT,
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'group_id' => DB_DATAOBJECT_INT,
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'feeduri' => DB_DATAOBJECT_STR,
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'salmonuri' => DB_DATAOBJECT_STR,
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'avatar' => DB_DATAOBJECT_STR,
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'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
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'modified' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
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}
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static function schemaDef()
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{
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return array(new ColumnDef('uri', 'varchar',
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255, false, 'PRI'),
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new ColumnDef('profile_id', 'integer',
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null, true, 'UNI'),
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new ColumnDef('group_id', 'integer',
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null, true, 'UNI'),
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new ColumnDef('feeduri', 'varchar',
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255, true, 'UNI'),
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new ColumnDef('salmonuri', 'text',
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null, true),
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new ColumnDef('avatar', 'text',
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null, true),
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new ColumnDef('created', 'datetime',
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null, false),
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new ColumnDef('modified', 'datetime',
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null, false));
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}
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/**
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* return key definitions for DB_DataObject
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*
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* DB_DataObject needs to know about keys that the table has; this function
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* defines them.
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*
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* @return array key definitions
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*/
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function keys()
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{
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return array_keys($this->keyTypes());
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}
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/**
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* return key definitions for Memcached_DataObject
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*
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* Our caching system uses the same key definitions, but uses a different
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* method to get them.
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*
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* @return array key definitions
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*/
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function keyTypes()
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{
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return array('uri' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U');
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}
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function sequenceKey()
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{
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return array(false, false, false);
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return array(
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'fields' => array(
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'uri' => array('type' => 'varchar', 'length' => 255, 'not null' => true),
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'profile_id' => array('type' => 'integer'),
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'group_id' => array('type' => 'integer'),
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'feeduri' => array('type' => 'varchar', 'length' => 255),
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'salmonuri' => array('type' => 'varchar', 'length' => 255),
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'avatar' => array('type' => 'text'),
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'created' => array('type' => 'datetime', 'not null' => true),
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'modified' => array('type' => 'datetime', 'not null' => true),
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),
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'primary key' => array('uri'),
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'unique keys' => array(
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'ostatus_profile_profile_id_idx' => array('profile_id'),
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'ostatus_profile_group_id_idx' => array('group_id'),
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'ostatus_profile_feeduri_idx' => array('feeduri'),
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),
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'foreign keys' => array(
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'profile_id' => array('profile' => 'id'),
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'group_id' => array('user_group' => 'id'),
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),
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);
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}
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/**
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