mirror of
https://github.com/silverstripe/silverstripe-mssql
synced 2024-10-22 08:05:53 +02:00
Initial import of MS SQL module
This commit is contained in:
Sam Minnee
commit
41c2cea173
0
_config.php
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0
_config.php
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856
code/MSSQLDatabase.php
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856
code/MSSQLDatabase.php
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@ -0,0 +1,856 @@
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<?php
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/**
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* @package sapphire
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* @subpackage model
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*/
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/**
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* MS SQL connector class.
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* @package sapphire
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* @subpackage model
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*/
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class MSSQLDatabase extends Database {
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/**
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* Connection to the DBMS.
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* @var resource
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*/
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private $dbConn;
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/**
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* True if we are connected to a database.
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* @var boolean
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*/
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private $active;
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/**
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* The name of the database.
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* @var string
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*/
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private $database;
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/**
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* Connect to a MS SQL database.
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* @param array $parameters An map of parameters, which should include:
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* - server: The server, eg, localhost
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* - username: The username to log on with
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* - password: The password to log on with
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* - database: The database to connect to
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*/
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public function __construct($parameters) {
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//assumes that the server and dbname will always be provided:
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$this->dbConn = mssql_connect($parameters['server'], $parameters['username'], $parameters['password']);
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if(!$this->dbConn) {
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$this->databaseError("Couldn't connect to MS SQL database");
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} else {
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$this->active=true;
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$this->database = $parameters['database'];
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mssql_select_db($parameters['database'], $this->dbConn);
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}
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parent::__construct();
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// Configure the connection
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$this->query('SET QUOTED_IDENTIFIER ON');
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}
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/**
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* Not implemented, needed for PDO
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*/
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public function getConnect($parameters) {
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return null;
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}
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/**
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* Returns true if this database supports collations
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* @return boolean
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*/
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public function supportsCollations() {
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return true;
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}
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/**
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* The version of MSSQL
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* @var float
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*/
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private $mssqlVersion;
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/**
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* Get the version of MySQL.
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* @return float
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*/
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public function getVersion() {
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user_error("getVersion not implemented", E_USER_WARNING);
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return 2008;
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/*
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if(!$this->pgsqlVersion) {
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//returns something like this: PostgreSQL 8.3.3 on i386-apple-darwin9.3.0, compiled by GCC i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5465)
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$postgres=strlen('PostgreSQL ');
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$db_version=$this->query("SELECT VERSION()")->value();
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$this->pgsqlVersion = (float)trim(substr($db_version, $postgres, strpos($db_version, ' on ')));
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}
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return $this->pgsqlVersion;
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*/
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}
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/**
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* Get the database server, namely mysql.
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* @return string
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*/
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public function getDatabaseServer() {
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return "mssql";
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}
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public function query($sql, $errorLevel = E_USER_ERROR) {
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if(isset($_REQUEST['previewwrite']) && in_array(strtolower(substr($sql,0,strpos($sql,' '))), array('insert','update','delete','replace'))) {
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Debug::message("Will execute: $sql");
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return;
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}
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if(isset($_REQUEST['showqueries'])) {
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$starttime = microtime(true);
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}
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echo 'sql: ' . $sql . '<br>';
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$handle = mssql_query($sql, $this->dbConn);
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if(isset($_REQUEST['showqueries'])) {
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$endtime = round(microtime(true) - $starttime,4);
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Debug::message("\n$sql\n{$endtime}ms\n", false);
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}
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DB::$lastQuery=$handle;
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if(!$handle && $errorLevel) $this->databaseError("Couldn't run query: $sql", $errorLevel);
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return new MSSQLQuery($this, $handle);
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}
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public function getGeneratedID($table) {
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$result=DB::query("SELECT last_value FROM \"{$table}_ID_seq\";");
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$row=$result->first();
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return $row['last_value'];
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}
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/**
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* OBSOLETE: Get the ID for the next new record for the table.
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*
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* @var string $table The name od the table.
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* @return int
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*/
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public function getNextID($table) {
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user_error('getNextID is OBSOLETE (and will no longer work properly)', E_USER_WARNING);
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$result = $this->query("SELECT MAX(ID)+1 FROM \"$table\"")->value();
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return $result ? $result : 1;
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}
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public function isActive() {
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return $this->active ? true : false;
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}
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public function createDatabase() {
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$this->query("CREATE DATABASE $this->database");
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}
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/**
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* Drop the database that this object is currently connected to.
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* Use with caution.
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*/
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public function dropDatabase() {
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$this->query("DROP DATABASE $this->database");
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}
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/**
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* Returns the name of the currently selected database
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*/
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public function currentDatabase() {
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return $this->database;
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}
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/**
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* Switches to the given database.
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* If the database doesn't exist, you should call createDatabase() after calling selectDatabase()
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*/
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public function selectDatabase($dbname) {
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$this->database = $dbname;
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if($this->databaseExists($this->database)) mysql_select_db($this->database, $this->dbConn);
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$this->tableList = $this->fieldList = $this->indexList = null;
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}
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/**
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* Returns true if the named database exists.
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*/
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public function databaseExists($name) {
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$SQL_name = Convert::raw2sql($name);
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return $this->query("SHOW DATABASES LIKE '$SQL_name'")->value() ? true : false;
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}
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public function createTable($tableName, $fields = null, $indexes = null) {
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$fieldSchemas = $indexSchemas = "";
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if($fields) foreach($fields as $k => $v) $fieldSchemas .= "\"$k\" $v,\n";
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//if($indexes) foreach($indexes as $k => $v) $indexSchemas .= $this->getIndexSqlDefinition($k, $v) . ",\n";
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//we need to generate indexes like this: CREATE INDEX IX_vault_to_export ON vault (to_export);
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//If we have a fulltext search request, then we need to create a special column
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//for GiST searches
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$fulltexts='';
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/*
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foreach($indexes as $name=>$this_index){
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if($this_index['type']=='fulltext'){
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//For full text search, we need to create a column for the index
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$fulltexts .= "\"ts_$name\" tsvector, ";
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}
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}
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*/
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//if($indexes) foreach($indexes as $k => $v) $indexSchemas .= $this->getIndexSqlDefinition($tableName, $k, $v) . "\n";
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$this->query("CREATE TABLE \"$tableName\" (
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$fieldSchemas
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$fulltexts
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primary key (\"ID\")
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); $indexSchemas");
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}
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/**
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* Alter a table's schema.
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* @param $table The name of the table to alter
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* @param $newFields New fields, a map of field name => field schema
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* @param $newIndexes New indexes, a map of index name => index type
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* @param $alteredFields Updated fields, a map of field name => field schema
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* @param $alteredIndexes Updated indexes, a map of index name => index type
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*/
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public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null) {
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$fieldSchemas = $indexSchemas = "";
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$alterList = array();
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if($newFields) foreach($newFields as $k => $v) $alterList[] .= "ADD \"$k\" $v";
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//if($newIndexes) foreach($newIndexes as $k => $v) $alterList[] .= "ADD " . $this->getIndexSqlDefinition($tableName, $k, $v);
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if($alteredFields) {
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foreach($alteredFields as $k => $v) {
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$val=$this->alterTableAlterColumn($tableName, $k, $v);
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if($val!='')
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$alterList[] .= $val;
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}
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}
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//DB ABSTRACTION: we need to change the constraints to be a separate 'add' command,
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//see http://www.postgresql.org/docs/8.1/static/sql-altertable.html
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if($alteredIndexes) foreach($alteredIndexes as $k => $v) {
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$alterList[] .= "DROP INDEX \"$k\"";
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$alterList[] .= "ADD ". $this->getIndexSqlDefinition($tableName, $k, $v);
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}
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if($alterList) {
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$alterations = implode(",\n", $alterList);
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$this->query("ALTER TABLE \"$tableName\" " . $alterations);
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}
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}
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/*
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* Creates an ALTER expression for a column in MS SQL
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*
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* @param $tableName Name of the table to be altered
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* @param $colName Name of the column to be altered
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* @param $colSpec String which contains conditions for a column
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* @return string
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*/
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private function alterTableAlterColumn($tableName, $colName, $colSpec){
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// Alterations not implemented
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return;
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// First, we split the column specifications into parts
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// TODO: this returns an empty array for the following string: int(11) not null auto_increment
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// on second thoughts, why is an auto_increment field being passed through?
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$pattern = '/^([\w()]+)\s?((?:not\s)?null)?\s?(default\s[\w\']+)?\s?(check\s[\w()\'",\s]+)?$/i';
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preg_match($pattern, $colSpec, $matches);
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/*if (isset($matches)) {
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echo "sql:$colSpec <pre>";
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print_r($matches);
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echo '</pre>';
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}*/
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//if($matches[1]=='serial8')
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// return '';
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if(isset($matches[1])) {
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$alterCol = "ALTER COLUMN \"$colName\" TYPE $matches[1]\n";
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// SET null / not null
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if(!empty($matches[2])) $alterCol .= ",\nALTER COLUMN \"$colName\" SET $matches[2]";
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// SET default (we drop it first, for reasons of precaution)
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if(!empty($matches[3])) {
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$alterCol .= ",\nALTER COLUMN \"$colName\" DROP DEFAULT";
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$alterCol .= ",\nALTER COLUMN \"$colName\" SET $matches[3]";
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}
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// SET check constraint (The constraint HAS to be dropped)
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if(!empty($matches[4])) {
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$alterCol .= ",\nDROP CONSTRAINT \"{$tableName}_{$colName}_check\"";
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$alterCol .= ",\nADD CONSTRAINT \"{$tableName}_{$colName}_check\" $matches[4]";
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}
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}
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return isset($alterCol) ? $alterCol : '';
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}
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public function renameTable($oldTableName, $newTableName) {
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$this->query("ALTER TABLE \"$oldTableName\" RENAME \"$newTableName\"");
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}
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/**
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* Checks a table's integrity and repairs it if necessary.
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* @var string $tableName The name of the table.
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* @return boolean Return true if the table has integrity after the method is complete.
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*/
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public function checkAndRepairTable($tableName) {
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/*
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$this->runTableCheckCommand("VACUUM FULL \"$tableName\"");
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*/
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return true;
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}
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/**
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* Helper function used by checkAndRepairTable.
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* @param string $sql Query to run.
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* @return boolean Returns if the query returns a successful result.
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*/
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protected function runTableCheckCommand($sql) {
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$testResults = $this->query($sql);
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foreach($testResults as $testRecord) {
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if(strtolower($testRecord['Msg_text']) != 'ok') {
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return false;
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}
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}
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return true;
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}
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public function createField($tableName, $fieldName, $fieldSpec) {
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$this->query("ALTER TABLE \"$tableName\" ADD \"$fieldName\" $fieldSpec");
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}
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/**
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* Change the database type of the given field.
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* @param string $tableName The name of the tbale the field is in.
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* @param string $fieldName The name of the field to change.
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* @param string $fieldSpec The new field specification
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*/
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public function alterField($tableName, $fieldName, $fieldSpec) {
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$this->query("ALTER TABLE \"$tableName\" CHANGE \"$fieldName\" \"$fieldName\" $fieldSpec");
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}
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/**
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* Change the database column name of the given field.
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*
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* @param string $tableName The name of the tbale the field is in.
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* @param string $oldName The name of the field to change.
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* @param string $newName The new name of the field
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*/
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public function renameField($tableName, $oldName, $newName) {
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$fieldList = $this->fieldList($tableName);
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if(array_key_exists($oldName, $fieldList)) {
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$this->query("ALTER TABLE \"$tableName\" RENAME COLUMN \"$oldName\" TO \"$newName\"");
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}
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}
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public function fieldList($table) {
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//Query from http://www.alberton.info/postgresql_meta_info.html
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//This gets us more information than we need, but I've included it all for the moment....
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$fields = $this->query("SELECT ordinal_position, column_name, data_type, column_default, is_nullable, character_maximum_length, numeric_precision FROM information_schema.columns WHERE table_name = '$table' ORDER BY ordinal_position;");
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$output = array();
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if($fields) foreach($fields as $field) {
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switch($field){
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case 'bigint':
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//We will assume that this is the ID column:
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$output['column_name']=$this->IdColumn();
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break;
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default:
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$output[$field['column_name']] = $field;
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}
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}
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return $output;
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}
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/**
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* Create an index on a table.
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* @param string $tableName The name of the table.
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* @param string $indexName The name of the index.
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* @param string $indexSpec The specification of the index, see Database::requireIndex() for more details.
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*/
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public function createIndex($tableName, $indexName, $indexSpec) {
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$this->query($this->getIndexSqlDefinition($tableName, $indexName, $indexSpec));
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}
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/*
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* This takes the index spec which has been provided by a class (ie static $indexes = blah blah)
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* and turns it into a proper string.
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* Some indexes may be arrays, such as fulltext and unique indexes, and this allows database-specific
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* arrays to be created.
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*/
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public function convertIndexSpec($indexSpec){
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if(is_array($indexSpec)){
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//Here we create a db-specific version of whatever index we need to create.
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switch($indexSpec['type']){
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case 'fulltext':
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$indexSpec='fulltext (' . str_replace(' ', '', $indexSpec['value']) . ')';
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break;
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case 'unique':
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$indexSpec='unique (' . $indexSpec['value'] . ')';
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break;
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||||
}
|
||||
}
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return $indexSpec;
|
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//return '';
|
||||
}
|
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|
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protected function getIndexSqlDefinition($tableName, $indexName, $indexSpec) {
|
||||
|
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if(!is_array($indexSpec)){
|
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$indexSpec=trim($indexSpec, '()');
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$bits=explode(',', $indexSpec);
|
||||
$indexes="\"" . implode("\",\"", $bits) . "\"";
|
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return 'create index ix_' . $tableName . '_' . $indexName . " ON \"" . $tableName . "\" (" . $indexes . ");";
|
||||
} else {
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//create a type-specific index
|
||||
if($indexSpec['type']=='fulltext')
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return 'create index ix_' . $tableName . '_' . $indexName . " ON \"" . $tableName . "\" USING gist(\"ts_" . $indexName . "\");";
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||||
|
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if($indexSpec['type']=='unique')
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return 'create unique index ix_' . $tableName . '_' . $indexName . " ON \"" . $tableName . "\" (\"" . $indexSpec['value'] . "\");";
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Alter an index on a table.
|
||||
* @param string $tableName The name of the table.
|
||||
* @param string $indexName The name of the index.
|
||||
* @param string $indexSpec The specification of the index, see Database::requireIndex() for more details.
|
||||
*/
|
||||
public function alterIndex($tableName, $indexName, $indexSpec) {
|
||||
$indexSpec = trim($indexSpec);
|
||||
if($indexSpec[0] != '(') {
|
||||
list($indexType, $indexFields) = explode(' ',$indexSpec,2);
|
||||
} else {
|
||||
$indexFields = $indexSpec;
|
||||
}
|
||||
|
||||
if(!$indexType) {
|
||||
$indexType = "index";
|
||||
}
|
||||
|
||||
$this->query("DROP INDEX $indexName");
|
||||
$this->query("ALTER TABLE \"$tableName\" ADD $indexType \"$indexName\" $indexFields");
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the list of indexes in a table.
|
||||
* @param string $table The table name.
|
||||
* @return array
|
||||
*/
|
||||
public function indexList($table) {
|
||||
//user_error("indexList not implemented", E_USER_WARNING);
|
||||
return array();
|
||||
/*
|
||||
|
||||
//Retrieve a list of indexes for the specified table
|
||||
$indexes = DB::query("SELECT i.relname AS \"indexname\"
|
||||
FROM pg_index x
|
||||
JOIN pg_class c ON c.oid = x.indrelid
|
||||
JOIN pg_class i ON i.oid = x.indexrelid
|
||||
LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
|
||||
LEFT JOIN pg_tablespace t ON t.oid = i.reltablespace
|
||||
WHERE c.relkind = 'r'::\"char\" AND i.relkind = 'i'::\"char\"
|
||||
AND c.relname = '$table';");
|
||||
|
||||
$indexList[$index['indexname']]=$index['indexname'];
|
||||
|
||||
return isset($indexList) ? $indexList : null;
|
||||
*/
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a list of all the tables in the database.
|
||||
* Table names will all be in lowercase.
|
||||
* @return array
|
||||
*/
|
||||
public function tableList() {
|
||||
foreach($this->query("EXEC sp_tables") as $record) {
|
||||
$table = strtolower($record['TABLE_NAME']);
|
||||
$tables[$table] = $table;
|
||||
}
|
||||
return isset($tables) ? $tables : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the number of rows affected by the previous operation.
|
||||
* @return int
|
||||
*/
|
||||
public function affectedRows() {
|
||||
return mssql_rows_affected($this->dbConn);
|
||||
}
|
||||
|
||||
/**
|
||||
* A function to return the field names and datatypes for the particular table
|
||||
*/
|
||||
public function tableDetails($tableName){
|
||||
user_error("tableDetails not implemented", E_USER_WARNING);
|
||||
return array();
|
||||
/*
|
||||
$query="SELECT a.attname as \"Column\", pg_catalog.format_type(a.atttypid, a.atttypmod) as \"Datatype\" FROM pg_catalog.pg_attribute a WHERE a.attnum > 0 AND NOT a.attisdropped AND a.attrelid = ( SELECT c.oid FROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relname ~ '^($tableName)$' AND pg_catalog.pg_table_is_visible(c.oid));";
|
||||
$result=DB::query($query);
|
||||
|
||||
$table=Array();
|
||||
while($row=pg_fetch_assoc($result)){
|
||||
$table[]=Array('Column'=>$row['Column'], 'DataType'=>$row['DataType']);
|
||||
}
|
||||
|
||||
return $table;
|
||||
*/
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a boolean type-formatted string
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function boolean($values, $asDbValue=false){
|
||||
//Annoyingly, we need to do a good ol' fashioned switch here:
|
||||
($values['default']) ? $default='1' : $default='0';
|
||||
return 'bit not null default ' . $default;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a date type-formatted string
|
||||
* For MySQL, we simply return the word 'date', no other parameters are necessary
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function date($values){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'date');
|
||||
//DB::requireField($this->tableName, $this->name, "date");
|
||||
|
||||
return 'date';
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a decimal type-formatted string
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function decimal($values, $asDbValue=false){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'decimal', 'precision'=>"$this->wholeSize,$this->decimalSize");
|
||||
//DB::requireField($this->tableName, $this->name, "decimal($this->wholeSize,$this->decimalSize)");
|
||||
|
||||
// Avoid empty strings being put in the db
|
||||
if($values['precision'] == '') {
|
||||
$precision = 1;
|
||||
} else {
|
||||
$precision = $values['precision'];
|
||||
}
|
||||
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'numeric', 'numeric_precision'=>'9');
|
||||
else return 'decimal(' . $precision . ') not null';
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a enum type-formatted string
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function enum($values){
|
||||
//Enums are a bit different. We'll be creating a varchar(255) with a constraint of all the usual enum options.
|
||||
//NOTE: In this one instance, we are including the table name in the values array
|
||||
|
||||
return "varchar(255) not null default '" . $values['default'] . "' check (\"" . $values['name'] . "\" in ('" . implode('\', \'', $values['enums']) . "'))";
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a float type-formatted string
|
||||
* For MySQL, we simply return the word 'date', no other parameters are necessary
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function float($values, $asDbValue=false){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'float');
|
||||
//DB::requireField($this->tableName, $this->name, "float");
|
||||
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'double precision');
|
||||
else return 'float';
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a int type-formatted string
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function int($values, $asDbValue=false){
|
||||
//We'll be using an 8 digit precision to keep it in line with the serial8 datatype for ID columns
|
||||
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'numeric', 'numeric_precision'=>'8');
|
||||
else
|
||||
return 'numeric(8) not null default ' . (int)$values['default'];
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a datetime type-formatted string
|
||||
* For MS SQL, we simply return the word 'timestamp', no other parameters are necessary
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function ssdatetime($values, $asDbValue=false){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'datetime');
|
||||
//DB::requireField($this->tableName, $this->name, $values);
|
||||
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'datetime without time zone');
|
||||
else
|
||||
return 'datetime';
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a text type-formatted string
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function text($values, $asDbValue=false){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'mediumtext', 'character set'=>'utf8', 'collate'=>'utf8_general_ci');
|
||||
//DB::requireField($this->tableName, $this->name, "mediumtext character set utf8 collate utf8_general_ci");
|
||||
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'text');
|
||||
else
|
||||
return 'text';
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a time type-formatted string
|
||||
* For MySQL, we simply return the word 'time', no other parameters are necessary
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function time($values){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'time');
|
||||
//DB::requireField($this->tableName, $this->name, "time");
|
||||
|
||||
return 'time';
|
||||
}
|
||||
|
||||
/**
|
||||
* Return a varchar type-formatted string
|
||||
*
|
||||
* @params array $values Contains a tokenised list of info about this data type
|
||||
* @return string
|
||||
*/
|
||||
public function varchar($values, $asDbValue=false){
|
||||
//For reference, this is what typically gets passed to this function:
|
||||
//$parts=Array('datatype'=>'varchar', 'precision'=>$this->size, 'character set'=>'utf8', 'collate'=>'utf8_general_ci');
|
||||
//DB::requireField($this->tableName, $this->name, "varchar($this->size) character set utf8 collate utf8_general_ci");
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'character varying', 'character_maximum_length'=>'255');
|
||||
else
|
||||
return 'varchar(' . $values['precision'] . ')';
|
||||
}
|
||||
|
||||
/*
|
||||
* Return a 4 digit numeric type. MySQL has a proprietary 'Year' type.
|
||||
*/
|
||||
public function year($values, $asDbValue=false){
|
||||
if($asDbValue)
|
||||
return Array('data_type'=>'numeric', 'numeric_precision'=>'4');
|
||||
else return 'numeric(4)';
|
||||
}
|
||||
|
||||
function escape_character($escape=false){
|
||||
if($escape)
|
||||
return "\\\"";
|
||||
else
|
||||
return "\"";
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a fulltext search datatype for MySQL
|
||||
*
|
||||
* @param array $spec
|
||||
*/
|
||||
function fulltext($table, $spec){
|
||||
//$spec['name'] is the column we've created that holds all the words we want to index.
|
||||
//This is a coalesced collection of multiple columns if necessary
|
||||
$spec='create index ix_' . $table . '_' . $spec['name'] . ' on ' . $table . ' using gist(' . $spec['name'] . ');';
|
||||
|
||||
return $spec;
|
||||
}
|
||||
|
||||
/**
|
||||
* This returns the column which is the primary key for each table
|
||||
* In Postgres, it is a SERIAL8, which is the equivalent of an auto_increment
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
function IdColumn($asDbValue=false){
|
||||
return 'bigint identity(1,1)';
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns true if this table exists
|
||||
* @todo Make a proper implementation
|
||||
*/
|
||||
function hasTable($tableName) {
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return enum values for the given field
|
||||
* @todo Make a proper implementation
|
||||
*/
|
||||
function enumValuesForField($tableName, $fieldName) {
|
||||
return array('SiteTree','Page');
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a SQLQuery object into a SQL statement
|
||||
* @todo There is a lot of duplication between this and MySQLDatabase::sqlQueryToString(). Perhaps they could both call a common
|
||||
* helper function in Database?
|
||||
*/
|
||||
public function sqlQueryToString(SQLQuery $sqlQuery) {
|
||||
if (!$sqlQuery->from) return '';
|
||||
$distinct = $sqlQuery->distinct ? "DISTINCT " : "";
|
||||
if($sqlQuery->delete) {
|
||||
$text = "DELETE ";
|
||||
} else if($sqlQuery->select) {
|
||||
$text = "SELECT $distinct" . implode(", ", $sqlQuery->select);
|
||||
}
|
||||
$text .= " FROM " . implode(" ", $sqlQuery->from);
|
||||
|
||||
if($sqlQuery->where) $text .= " WHERE (" . $sqlQuery->getFilter(). ")";
|
||||
if($sqlQuery->groupby) $text .= " GROUP BY " . implode(", ", $sqlQuery->groupby);
|
||||
if($sqlQuery->having) $text .= " HAVING ( " . implode(" ) AND ( ", $sqlQuery->having) . " )";
|
||||
if($sqlQuery->orderby) $text .= " ORDER BY " . $sqlQuery->orderby;
|
||||
|
||||
// Limit not implemented
|
||||
/*
|
||||
if($sqlQuery->limit) {
|
||||
$limit = $sqlQuery->limit;
|
||||
// Pass limit as array or SQL string value
|
||||
if(is_array($limit)) {
|
||||
if(!array_key_exists('limit',$limit)) user_error('SQLQuery::limit(): Wrong format for $limit', E_USER_ERROR);
|
||||
|
||||
if(isset($limit['start']) && is_numeric($limit['start']) && isset($limit['limit']) && is_numeric($limit['limit'])) {
|
||||
$combinedLimit = (int)$limit['start'] . ',' . (int)$limit['limit'];
|
||||
} elseif(isset($limit['limit']) && is_numeric($limit['limit'])) {
|
||||
$combinedLimit = (int)$limit['limit'];
|
||||
} else {
|
||||
$combinedLimit = false;
|
||||
}
|
||||
if(!empty($combinedLimit)) $this->limit = $combinedLimit;
|
||||
|
||||
} else {
|
||||
$text .= " LIMIT " . $sqlQuery->limit;
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
return $text;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* A result-set from a MySQL database.
|
||||
* @package sapphire
|
||||
* @subpackage model
|
||||
*/
|
||||
class MSSQLQuery extends Query {
|
||||
/**
|
||||
* The MySQLDatabase object that created this result set.
|
||||
* @var MySQLDatabase
|
||||
*/
|
||||
private $database;
|
||||
|
||||
/**
|
||||
* The internal MySQL handle that points to the result set.
|
||||
* @var resource
|
||||
*/
|
||||
private $handle;
|
||||
|
||||
/**
|
||||
* Hook the result-set given into a Query class, suitable for use by sapphire.
|
||||
* @param database The database object that created this query.
|
||||
* @param handle the internal mysql handle that is points to the resultset.
|
||||
*/
|
||||
public function __construct(MSSQLDatabase $database, $handle) {
|
||||
$this->database = $database;
|
||||
$this->handle = $handle;
|
||||
parent::__construct();
|
||||
}
|
||||
|
||||
public function __destroy() {
|
||||
//mysql_free_result($this->handle);
|
||||
}
|
||||
|
||||
public function seek($row) {
|
||||
//return mysql_data_seek($this->handle, $row);
|
||||
//This is unnecessary in postgres. You can just provide a row number with the fetch
|
||||
//command.
|
||||
}
|
||||
|
||||
public function numRecords() {
|
||||
return mssql_num_rows($this->handle);
|
||||
}
|
||||
|
||||
public function nextRecord() {
|
||||
// Coalesce rather than replace common fields.
|
||||
if($data = mssql_fetch_row($this->handle)) {
|
||||
foreach($data as $columnIdx => $value) {
|
||||
$columnName = mssql_field_name($this->handle, $columnIdx);
|
||||
// $value || !$ouput[$columnName] means that the *last* occurring value is shown
|
||||
// !$ouput[$columnName] means that the *first* occurring value is shown
|
||||
if(isset($value) || !isset($output[$columnName])) {
|
||||
$output[$columnName] = $value;
|
||||
}
|
||||
}
|
||||
return $output;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
?>
|
||||
Loading…
Reference in New Issue
Block a user