mirror of
https://github.com/silverstripe/silverstripe-mssql
synced 2024-10-22 08:05:53 +02:00
965 lines
32 KiB
PHP
965 lines
32 KiB
PHP
<?php
|
|
|
|
namespace SilverStripe\MSSQL;
|
|
|
|
use SilverStripe\ORM\Connect\DBSchemaManager;
|
|
|
|
/**
|
|
* Represents and handles all schema management for a MS SQL database
|
|
*/
|
|
class MSSQLSchemaManager extends DBSchemaManager
|
|
{
|
|
|
|
/**
|
|
* Stores per-request cached constraint checks that come from the database.
|
|
*
|
|
* @var array
|
|
*/
|
|
protected static $cached_checks = array();
|
|
|
|
/**
|
|
* Builds the internal MS SQL Server index name given the silverstripe table and index name
|
|
*
|
|
* @param string $tableName
|
|
* @param string $indexName
|
|
* @param string $prefix The optional prefix for the index. Defaults to "ix" for indexes.
|
|
* @return string The name of the index
|
|
*/
|
|
public function buildMSSQLIndexName($tableName, $indexName, $prefix = 'ix')
|
|
{
|
|
|
|
// Cleanup names of namespaced tables
|
|
$tableName = str_replace('\\', '_', $tableName);
|
|
$indexName = str_replace('\\', '_', $indexName);
|
|
|
|
return "{$prefix}_{$tableName}_{$indexName}";
|
|
}
|
|
|
|
|
|
/**
|
|
* This will set up the full text search capabilities.
|
|
*
|
|
* @param string $name Name of full text catalog to use
|
|
*/
|
|
public function createFullTextCatalog($name = 'ftCatalog')
|
|
{
|
|
$result = $this->fullTextCatalogExists();
|
|
if (!$result) {
|
|
$this->query("CREATE FULLTEXT CATALOG \"$name\" AS DEFAULT;");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check that a fulltext catalog has been created yet.
|
|
*
|
|
* @param string $name Name of full text catalog to use
|
|
* @return boolean
|
|
*/
|
|
public function fullTextCatalogExists($name = 'ftCatalog')
|
|
{
|
|
return (bool) $this->preparedQuery(
|
|
"SELECT name FROM sys.fulltext_catalogs WHERE name = ?;",
|
|
array($name)
|
|
)->value();
|
|
}
|
|
|
|
/**
|
|
* Sleep until the catalog has been fully rebuilt. This is a busy wait designed for situations
|
|
* when you need to be sure the index is up to date - for example in unit tests.
|
|
*
|
|
* TODO: move this to Database class? Can we assume this will be useful for all databases?
|
|
* Also see the wrapper functions "waitUntilIndexingFinished" in SearchFormTest and TranslatableSearchFormTest
|
|
*
|
|
* @param int $maxWaitingTime Time in seconds to wait for the database.
|
|
*/
|
|
public function waitUntilIndexingFinished($maxWaitingTime = 15)
|
|
{
|
|
if (!$this->database->fullTextEnabled()) {
|
|
return;
|
|
}
|
|
|
|
$this->query("EXEC sp_fulltext_catalog 'ftCatalog', 'Rebuild';");
|
|
|
|
// Busy wait until it's done updating, but no longer than 15 seconds.
|
|
$start = time();
|
|
while (time() - $start < $maxWaitingTime) {
|
|
$status = $this->query("EXEC sp_help_fulltext_catalogs 'ftCatalog';")->first();
|
|
|
|
if (isset($status['STATUS']) && $status['STATUS'] == 0) {
|
|
// Idle!
|
|
break;
|
|
}
|
|
sleep(1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if a fulltext index exists on a particular table name.
|
|
*
|
|
* @param string $tableName
|
|
* @return boolean TRUE index exists | FALSE index does not exist | NULL no support
|
|
*/
|
|
public function fulltextIndexExists($tableName)
|
|
{
|
|
// Special case for no full text index support
|
|
if (!$this->database->fullTextEnabled()) {
|
|
return null;
|
|
}
|
|
|
|
return (bool) $this->preparedQuery("
|
|
SELECT 1 FROM sys.fulltext_indexes i
|
|
JOIN sys.objects o ON i.object_id = o.object_id
|
|
WHERE o.name = ?",
|
|
array($tableName)
|
|
)->value();
|
|
}
|
|
|
|
/**
|
|
* MSSQL stores the primary key column with an internal identifier,
|
|
* so a lookup needs to be done to determine it.
|
|
*
|
|
* @param string $tableName Name of table with primary key column "ID"
|
|
* @return string Internal identifier for primary key
|
|
*/
|
|
public function getPrimaryKey($tableName)
|
|
{
|
|
$indexes = $this->query("EXEC sp_helpindex '$tableName';");
|
|
$indexName = '';
|
|
foreach ($indexes as $index) {
|
|
if ($index['index_keys'] == 'ID') {
|
|
$indexName = $index['index_name'];
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $indexName;
|
|
}
|
|
|
|
/**
|
|
* Gets the identity column of a table
|
|
*
|
|
* @param string $tableName
|
|
* @return string|null
|
|
*/
|
|
public function getIdentityColumn($tableName)
|
|
{
|
|
return $this->preparedQuery("
|
|
SELECT
|
|
TABLE_NAME + '.' + COLUMN_NAME,
|
|
TABLE_NAME
|
|
FROM
|
|
INFORMATION_SCHEMA.COLUMNS
|
|
WHERE
|
|
TABLE_SCHEMA = ? AND
|
|
COLUMNPROPERTY(object_id(TABLE_NAME), COLUMN_NAME, 'IsIdentity') = 1 AND
|
|
TABLE_NAME = ?
|
|
", array('dbo', $tableName))->value();
|
|
}
|
|
|
|
public function createDatabase($name)
|
|
{
|
|
$this->query("CREATE DATABASE \"$name\"");
|
|
}
|
|
|
|
public function dropDatabase($name)
|
|
{
|
|
$this->query("DROP DATABASE \"$name\"");
|
|
}
|
|
|
|
public function databaseExists($name)
|
|
{
|
|
$databases = $this->databaseList();
|
|
foreach ($databases as $dbname) {
|
|
if ($dbname == $name) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function databaseList()
|
|
{
|
|
return $this->query('SELECT NAME FROM sys.sysdatabases')->column();
|
|
}
|
|
|
|
/**
|
|
* Create a new table.
|
|
* @param string $tableName The name of the table
|
|
* @param array $fields A map of field names to field types
|
|
* @param array $indexes A map of indexes
|
|
* @param array $options An map of additional options. The available keys are as follows:
|
|
* - 'MSSQLDatabase'/'MySQLDatabase'/'PostgreSQLDatabase' - database-specific options such as "engine" for MySQL.
|
|
* - 'temporary' - If true, then a temporary table will be created
|
|
* @param array $advancedOptions
|
|
* @return string The table name generated. This may be different from the table name, for example with temporary tables.
|
|
*/
|
|
public function createTable($tableName, $fields = null, $indexes = null, $options = null, $advancedOptions = null)
|
|
{
|
|
$fieldSchemas = $indexSchemas = "";
|
|
if ($fields) {
|
|
foreach ($fields as $k => $v) {
|
|
$fieldSchemas .= "\"$k\" $v,\n";
|
|
}
|
|
}
|
|
|
|
// Temporary tables start with "#" in MSSQL-land
|
|
if (!empty($options['temporary'])) {
|
|
// Randomize the temp table name to avoid conflicts in the tempdb table which derived databases share
|
|
$tableName = "#$tableName" . '-' . rand(1000000, 9999999);
|
|
}
|
|
|
|
$this->query("CREATE TABLE \"$tableName\" (
|
|
$fieldSchemas
|
|
primary key (\"ID\")
|
|
);");
|
|
|
|
//we need to generate indexes like this: CREATE INDEX IX_vault_to_export ON vault (to_export);
|
|
//This needs to be done AFTER the table creation, so we can set up the fulltext indexes correctly
|
|
if ($indexes) {
|
|
foreach ($indexes as $k => $v) {
|
|
$indexSchemas .= $this->getIndexSqlDefinition($tableName, $k, $v) . "\n";
|
|
}
|
|
}
|
|
|
|
if ($indexSchemas) {
|
|
$this->query($indexSchemas);
|
|
}
|
|
|
|
return $tableName;
|
|
}
|
|
|
|
/**
|
|
* Alter a table's schema.
|
|
* @param string $tableName The name of the table to alter
|
|
* @param array $newFields New fields, a map of field name => field schema
|
|
* @param array $newIndexes New indexes, a map of index name => index type
|
|
* @param array $alteredFields Updated fields, a map of field name => field schema
|
|
* @param array $alteredIndexes Updated indexes, a map of index name => index type
|
|
* @param array $alteredOptions
|
|
* @param array $advancedOptions
|
|
*/
|
|
public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null, $alteredOptions=null, $advancedOptions=null)
|
|
{
|
|
$alterList = array();
|
|
|
|
// drop any fulltext indexes that exist on the table before altering the structure
|
|
if ($this->fulltextIndexExists($tableName)) {
|
|
$alterList[] = "\nDROP FULLTEXT INDEX ON \"$tableName\";";
|
|
}
|
|
|
|
if ($newFields) {
|
|
foreach ($newFields as $k => $v) {
|
|
$alterList[] = "ALTER TABLE \"$tableName\" ADD \"$k\" $v";
|
|
}
|
|
}
|
|
|
|
if ($alteredFields) {
|
|
foreach ($alteredFields as $k => $v) {
|
|
$alterList[] = $this->alterTableAlterColumn($tableName, $k, $v);
|
|
}
|
|
}
|
|
if ($alteredIndexes) {
|
|
foreach ($alteredIndexes as $k => $v) {
|
|
$alterList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
|
|
}
|
|
}
|
|
if ($newIndexes) {
|
|
foreach ($newIndexes as $k => $v) {
|
|
$alterList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
|
|
}
|
|
}
|
|
|
|
if ($alterList) {
|
|
foreach ($alterList as $alteration) {
|
|
if ($alteration != '') {
|
|
$this->query($alteration);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Given the table and column name, retrieve the constraint name for that column
|
|
* in the table.
|
|
*
|
|
* @param string $tableName Table name column resides in
|
|
* @param string $columnName Column name the constraint is for
|
|
* @return string|null
|
|
*/
|
|
public function getConstraintName($tableName, $columnName)
|
|
{
|
|
return $this->preparedQuery("
|
|
SELECT CONSTRAINT_NAME
|
|
FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE
|
|
WHERE TABLE_NAME = ? AND COLUMN_NAME = ?",
|
|
array($tableName, $columnName)
|
|
)->value();
|
|
}
|
|
|
|
/**
|
|
* Given a table and column name, return a check constraint clause for that column in
|
|
* the table.
|
|
*
|
|
* This is an expensive query, so it is cached per-request and stored by table. The initial
|
|
* call for a table that has not been cached will query all columns and store that
|
|
* so subsequent calls are fast.
|
|
*
|
|
* @param string $tableName Table name column resides in
|
|
* @param string $columnName Column name the constraint is for
|
|
* @return string The check string
|
|
*/
|
|
public function getConstraintCheckClause($tableName, $columnName)
|
|
{
|
|
// Check already processed table columns
|
|
if (isset(self::$cached_checks[$tableName])) {
|
|
if (!isset(self::$cached_checks[$tableName][$columnName])) {
|
|
return null;
|
|
}
|
|
return self::$cached_checks[$tableName][$columnName];
|
|
}
|
|
|
|
// Regenerate cehcks for this table
|
|
$checks = array();
|
|
foreach ($this->preparedQuery("
|
|
SELECT CAST(CHECK_CLAUSE AS TEXT) AS CHECK_CLAUSE, COLUMN_NAME
|
|
FROM INFORMATION_SCHEMA.CHECK_CONSTRAINTS AS CC
|
|
INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS CCU ON CCU.CONSTRAINT_NAME = CC.CONSTRAINT_NAME
|
|
WHERE TABLE_NAME = ?",
|
|
array($tableName)
|
|
) as $record) {
|
|
$checks[$record['COLUMN_NAME']] = $record['CHECK_CLAUSE'];
|
|
}
|
|
self::$cached_checks[$tableName] = $checks;
|
|
|
|
// Return via cached records
|
|
return $this->getConstraintCheckClause($tableName, $columnName);
|
|
}
|
|
|
|
/**
|
|
* Return the name of the default constraint applied to $tableName.$colName.
|
|
* Will return null if no such constraint exists
|
|
*
|
|
* @param string $tableName Name of the table
|
|
* @param string $colName Name of the column
|
|
* @return string|null
|
|
*/
|
|
protected function defaultConstraintName($tableName, $colName)
|
|
{
|
|
return $this->preparedQuery("
|
|
SELECT s.name --default name
|
|
FROM sys.sysobjects s
|
|
join sys.syscolumns c ON s.parent_obj = c.id
|
|
WHERE s.xtype = 'd'
|
|
and c.cdefault = s.id
|
|
and parent_obj = OBJECT_ID(?)
|
|
and c.name = ?",
|
|
array($tableName, $colName)
|
|
)->value();
|
|
}
|
|
|
|
/**
|
|
* Get enum values from a constraint check clause.
|
|
*
|
|
* @param string $clause Check clause to parse values from
|
|
* @return array Enum values
|
|
*/
|
|
protected function enumValuesFromCheckClause($clause)
|
|
{
|
|
$segments = preg_split('/ +OR *\[/i', $clause);
|
|
$constraints = array();
|
|
foreach ($segments as $segment) {
|
|
$bits = preg_split('/ *= */', $segment);
|
|
for ($i = 1; $i < sizeof($bits); $i += 2) {
|
|
array_unshift($constraints, substr(rtrim($bits[$i], ')'), 1, -1));
|
|
}
|
|
}
|
|
return $constraints;
|
|
}
|
|
|
|
/*
|
|
* Creates an ALTER expression for a column in MS SQL
|
|
*
|
|
* @param string $tableName Name of the table to be altered
|
|
* @param string $colName Name of the column to be altered
|
|
* @param string $colSpec String which contains conditions for a column
|
|
* @return string
|
|
*/
|
|
protected function alterTableAlterColumn($tableName, $colName, $colSpec)
|
|
{
|
|
|
|
// First, we split the column specifications into parts
|
|
// TODO: this returns an empty array for the following string: int(11) not null auto_increment
|
|
// on second thoughts, why is an auto_increment field being passed through?
|
|
$pattern = '/^(?<definition>[\w()]+)\s?(?<null>(?:not\s)?null)?\s?(?<default>default\s[\w\']+)?\s?(?<check>check\s?[\w()\'",\s]+)?$/i';
|
|
$matches = array();
|
|
preg_match($pattern, $colSpec, $matches);
|
|
|
|
// drop the index if it exists
|
|
$alterQueries = array();
|
|
|
|
// drop *ALL* indexes on a table before proceeding
|
|
// this won't drop primary keys, though
|
|
$indexes = $this->indexNames($tableName);
|
|
$indexes = array_filter($indexes);
|
|
|
|
foreach ($indexes as $indexName) {
|
|
$alterQueries[] = "IF EXISTS (SELECT name FROM sys.indexes WHERE name = '$indexName' AND object_id = object_id(SCHEMA_NAME() + '.$tableName')) DROP INDEX \"$indexName\" ON \"$tableName\";";
|
|
}
|
|
|
|
$prefix = "ALTER TABLE \"$tableName\" ";
|
|
|
|
// Remove the old default prior to adjusting the column.
|
|
if ($defaultConstraintName = $this->defaultConstraintName($tableName, $colName)) {
|
|
$alterQueries[] = "$prefix DROP CONSTRAINT \"$defaultConstraintName\";";
|
|
}
|
|
|
|
if (isset($matches['definition'])) {
|
|
//We will prevent any changes being made to the ID column. Primary key indexes will have a fit if we do anything here.
|
|
if ($colName != 'ID') {
|
|
|
|
// SET null / not null
|
|
$nullFragment = empty($matches['null']) ? '' : " {$matches['null']}";
|
|
$alterQueries[] = "$prefix ALTER COLUMN \"$colName\" {$matches['definition']}$nullFragment;";
|
|
|
|
// Add a default back
|
|
if (!empty($matches['default'])) {
|
|
$alterQueries[] = "$prefix ADD {$matches['default']} FOR \"$colName\";";
|
|
}
|
|
|
|
// SET check constraint (The constraint HAS to be dropped)
|
|
if (!empty($matches['check'])) {
|
|
$constraint = $this->getConstraintName($tableName, $colName);
|
|
if ($constraint) {
|
|
$alterQueries[] = "$prefix DROP CONSTRAINT {$constraint};";
|
|
}
|
|
|
|
//NOTE: 'with nocheck' seems to solve a few problems I've been having for modifying existing tables.
|
|
$alterQueries[] = "$prefix WITH NOCHECK ADD CONSTRAINT \"{$tableName}_{$colName}_check\" {$matches['check']};";
|
|
}
|
|
}
|
|
}
|
|
|
|
return implode("\n", $alterQueries);
|
|
}
|
|
|
|
public function renameTable($oldTableName, $newTableName)
|
|
{
|
|
$this->query("EXEC sp_rename \"$oldTableName\", \"$newTableName\"");
|
|
}
|
|
|
|
/**
|
|
* Checks a table's integrity and repairs it if necessary.
|
|
* NOTE: MSSQL does not appear to support any vacuum or optimise commands
|
|
*
|
|
* @var string $tableName The name of the table.
|
|
* @return boolean Return true if the table has integrity after the method is complete.
|
|
*/
|
|
public function checkAndRepairTable($tableName)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
public function createField($tableName, $fieldName, $fieldSpec)
|
|
{
|
|
$this->query("ALTER TABLE \"$tableName\" ADD \"$fieldName\" $fieldSpec");
|
|
}
|
|
|
|
/**
|
|
* Change the database type of the given field.
|
|
* @param string $tableName The name of the tbale the field is in.
|
|
* @param string $fieldName The name of the field to change.
|
|
* @param string $fieldSpec The new field specification
|
|
*/
|
|
public function alterField($tableName, $fieldName, $fieldSpec)
|
|
{
|
|
$this->query("ALTER TABLE \"$tableName\" CHANGE \"$fieldName\" \"$fieldName\" $fieldSpec");
|
|
}
|
|
|
|
public function renameField($tableName, $oldName, $newName)
|
|
{
|
|
$this->query("EXEC sp_rename @objname = '$tableName.$oldName', @newname = '$newName', @objtype = 'COLUMN'");
|
|
}
|
|
|
|
public function fieldList($table)
|
|
{
|
|
//This gets us more information than we need, but I've included it all for the moment....
|
|
$fieldRecords = $this->preparedQuery("SELECT ordinal_position, column_name, data_type, column_default,
|
|
is_nullable, character_maximum_length, numeric_precision, numeric_scale, collation_name
|
|
FROM information_schema.columns WHERE table_name = ?
|
|
ORDER BY ordinal_position;",
|
|
array($table)
|
|
);
|
|
|
|
// Cache the records from the query - otherwise a lack of multiple active result sets
|
|
// will cause subsequent queries to fail in this method
|
|
$fields = array();
|
|
$output = array();
|
|
foreach ($fieldRecords as $record) {
|
|
$fields[] = $record;
|
|
}
|
|
|
|
foreach ($fields as $field) {
|
|
// Update the data_type field to be a complete column definition string for use by
|
|
// SS_Database::requireField()
|
|
switch ($field['data_type']) {
|
|
case 'int':
|
|
case 'bigint':
|
|
case 'numeric':
|
|
case 'float':
|
|
case 'bit':
|
|
if ($field['data_type'] != 'bigint' && $field['data_type'] != 'int' && $sizeSuffix = $field['numeric_precision']) {
|
|
$field['data_type'] .= "($sizeSuffix)";
|
|
}
|
|
|
|
if ($field['is_nullable'] == 'YES') {
|
|
$field['data_type'] .= ' null';
|
|
} else {
|
|
$field['data_type'] .= ' not null';
|
|
}
|
|
if ($field['column_default']) {
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] .= " default $default";
|
|
}
|
|
break;
|
|
|
|
case 'decimal':
|
|
if ($field['numeric_precision']) {
|
|
$sizeSuffix = $field['numeric_precision'] . ',' . $field['numeric_scale'];
|
|
$field['data_type'] .= "($sizeSuffix)";
|
|
}
|
|
|
|
if ($field['is_nullable'] == 'YES') {
|
|
$field['data_type'] .= ' null';
|
|
} else {
|
|
$field['data_type'] .= ' not null';
|
|
}
|
|
if ($field['column_default']) {
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] .= " default $default";
|
|
}
|
|
break;
|
|
|
|
case 'nvarchar':
|
|
case 'varchar':
|
|
//Check to see if there's a constraint attached to this column:
|
|
$clause = $this->getConstraintCheckClause($table, $field['column_name']);
|
|
if ($clause) {
|
|
$constraints = $this->enumValuesFromCheckClause($clause);
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] = $this->enum(array(
|
|
'default' => $default,
|
|
'name' => $field['column_name'],
|
|
'enums' => $constraints,
|
|
'table' => $table
|
|
));
|
|
break;
|
|
}
|
|
|
|
default:
|
|
$sizeSuffix = $field['character_maximum_length'];
|
|
if ($sizeSuffix == '-1') {
|
|
$sizeSuffix = 'max';
|
|
}
|
|
if ($sizeSuffix) {
|
|
$field['data_type'] .= "($sizeSuffix)";
|
|
}
|
|
|
|
if ($field['is_nullable'] == 'YES') {
|
|
$field['data_type'] .= ' null';
|
|
} else {
|
|
$field['data_type'] .= ' not null';
|
|
}
|
|
if ($field['column_default']) {
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] .= " default '$default'";
|
|
}
|
|
}
|
|
$output[$field['column_name']] = $field;
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Create an index on a table.
|
|
* @param string $tableName The name of the table.
|
|
* @param string $indexName The name of the index.
|
|
* @param string $indexSpec The specification of the index, see SS_Database::requireIndex() for more details.
|
|
*/
|
|
public function createIndex($tableName, $indexName, $indexSpec)
|
|
{
|
|
$this->query($this->getIndexSqlDefinition($tableName, $indexName, $indexSpec));
|
|
}
|
|
|
|
/**
|
|
* Return SQL for dropping and recreating an index
|
|
*
|
|
* @param string $tableName Name of table to create this index against
|
|
* @param string $indexName Name of this index
|
|
* @param array|string $indexSpec Index specification, either as a raw string
|
|
* or parsed array form
|
|
* @return string The SQL required to generate this index
|
|
*/
|
|
protected function getIndexSqlDefinition($tableName, $indexName, $indexSpec)
|
|
{
|
|
|
|
// Determine index name
|
|
$index = $this->buildMSSQLIndexName($tableName, $indexName);
|
|
|
|
// Consolidate/Cleanup spec into array format
|
|
$columns = $this->implodeColumnList($indexSpec['columns']);
|
|
|
|
$drop = "IF EXISTS (SELECT name FROM sys.indexes WHERE name = '$index' AND object_id = object_id(SCHEMA_NAME() + '.$tableName')) DROP INDEX $index ON \"$tableName\";";
|
|
|
|
// create a type-specific index
|
|
if ($indexSpec['type'] == 'fulltext') {
|
|
if(!$this->database->fullTextEnabled()) {
|
|
return '';
|
|
}
|
|
// enable fulltext on this table
|
|
$this->createFullTextCatalog();
|
|
$primary_key = $this->getPrimaryKey($tableName);
|
|
|
|
if ($primary_key) {
|
|
return "$drop CREATE FULLTEXT INDEX ON \"$tableName\" ({$columns})"
|
|
. "KEY INDEX $primary_key WITH CHANGE_TRACKING AUTO;";
|
|
}
|
|
}
|
|
|
|
if ($indexSpec['type'] == 'unique') {
|
|
return "$drop CREATE UNIQUE INDEX $index ON \"$tableName\" ({$columns});";
|
|
}
|
|
|
|
return "$drop CREATE INDEX $index ON \"$tableName\" ({$columns});";
|
|
}
|
|
|
|
public function alterIndex($tableName, $indexName, $indexSpec)
|
|
{
|
|
$this->createIndex($tableName, $indexName, $indexSpec);
|
|
}
|
|
|
|
/**
|
|
* Return the list of indexes in a table.
|
|
* @param string $table The table name.
|
|
* @return array
|
|
*/
|
|
public function indexList($table)
|
|
{
|
|
$indexes = $this->query("EXEC sp_helpindex '$table';");
|
|
$indexList = array();
|
|
|
|
// Enumerate all basic indexes
|
|
foreach ($indexes as $index) {
|
|
if (strpos($index['index_description'], 'unique') !== false) {
|
|
$indexType = 'unique ';
|
|
} else {
|
|
$indexType = 'index ';
|
|
}
|
|
|
|
// Extract name from index
|
|
$baseIndexName = $this->buildMSSQLIndexName($table, '');
|
|
$indexName = substr($index['index_name'], strlen($baseIndexName));
|
|
|
|
// Extract columns
|
|
$columns = $this->quoteColumnSpecString($index['index_keys']);
|
|
$indexList[$indexName] = array(
|
|
'name' => $indexName,
|
|
'columns' => $this->explodeColumnString($columns),
|
|
'type' => $indexType
|
|
);
|
|
}
|
|
|
|
// Now we need to check to see if we have any fulltext indexes attached to this table:
|
|
if ($this->database->fullTextEnabled()) {
|
|
$result = $this->query('EXEC sp_help_fulltext_columns;');
|
|
|
|
// Extract columns from this fulltext definition
|
|
$columns = array();
|
|
foreach ($result as $row) {
|
|
if ($row['TABLE_NAME'] == $table) {
|
|
$columns[] = $row['FULLTEXT_COLUMN_NAME'];
|
|
}
|
|
}
|
|
|
|
if (!empty($columns)) {
|
|
$indexList['SearchFields'] = array(
|
|
'name' => 'SearchFields',
|
|
'columns' => $this->implodeColumnList($columns),
|
|
'type' => 'fulltext'
|
|
);
|
|
}
|
|
}
|
|
|
|
return $indexList;
|
|
}
|
|
|
|
/**
|
|
* For a given table name, get all the internal index names,
|
|
* except for those that are primary keys and fulltext indexes.
|
|
*
|
|
* @param string $tableName
|
|
* @return array
|
|
*/
|
|
public function indexNames($tableName)
|
|
{
|
|
return $this->preparedQuery('
|
|
SELECT ind.name FROM sys.indexes ind
|
|
INNER JOIN sys.tables t ON ind.object_id = t.object_id
|
|
WHERE is_primary_key = 0 AND t.name = ? AND ind.name IS NOT NULL',
|
|
array($tableName)
|
|
)->column();
|
|
}
|
|
|
|
public function tableList()
|
|
{
|
|
$tables = array();
|
|
foreach ($this->query("EXEC sp_tables @table_owner = 'dbo';") as $record) {
|
|
$tables[strtolower($record['TABLE_NAME'])] = $record['TABLE_NAME'];
|
|
}
|
|
return $tables;
|
|
}
|
|
|
|
/**
|
|
* Return a boolean type-formatted string
|
|
* We use 'bit' so that we can do numeric-based comparisons
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function boolean($values)
|
|
{
|
|
$default = ($values['default']) ? '1' : '0';
|
|
return 'bit not null default ' . $default;
|
|
}
|
|
|
|
/**
|
|
* Return a date type-formatted string.
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function date($values)
|
|
{
|
|
return 'date null';
|
|
}
|
|
|
|
/**
|
|
* Return a decimal type-formatted string
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function decimal($values)
|
|
{
|
|
// Avoid empty strings being put in the db
|
|
if ($values['precision'] == '') {
|
|
$precision = 1;
|
|
} else {
|
|
$precision = $values['precision'];
|
|
}
|
|
|
|
$defaultValue = '0';
|
|
if (isset($values['default']) && is_numeric($values['default'])) {
|
|
$defaultValue = $values['default'];
|
|
}
|
|
|
|
return "decimal($precision) not null default $defaultValue";
|
|
}
|
|
|
|
/**
|
|
* Return a enum type-formatted string
|
|
*
|
|
* @param 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
|
|
|
|
$maxLength = max(array_map('strlen', $values['enums']));
|
|
|
|
return "varchar($maxLength) not null default '" . $values['default']
|
|
. "' check(\"" . $values['name'] . "\" in ('" . implode("','", $values['enums'])
|
|
. "'))";
|
|
}
|
|
|
|
/**
|
|
* @todo Make this work like {@link MySQLDatabase::set()}
|
|
*
|
|
* @param array $values
|
|
* @return string
|
|
*/
|
|
public function set($values)
|
|
{
|
|
return $this->enum($values);
|
|
}
|
|
|
|
/**
|
|
* Return a float type-formatted string.
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function float($values)
|
|
{
|
|
return 'float(53) not null default ' . $values['default'];
|
|
}
|
|
|
|
/**
|
|
* Return a int type-formatted string
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function int($values)
|
|
{
|
|
return 'int not null default ' . (int) $values['default'];
|
|
}
|
|
|
|
/**
|
|
* Return a bigint type-formatted string
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function bigint($values)
|
|
{
|
|
return 'bigint 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
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function datetime($values)
|
|
{
|
|
return 'datetime null';
|
|
}
|
|
|
|
/**
|
|
* Return a text type-formatted string
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function text($values)
|
|
{
|
|
$collation = MSSQLDatabase::get_collation();
|
|
$collationSQL = $collation ? " COLLATE $collation" : "";
|
|
return "nvarchar(max)$collationSQL null";
|
|
}
|
|
|
|
/**
|
|
* Return a time type-formatted string.
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function time($values)
|
|
{
|
|
return 'time null';
|
|
}
|
|
|
|
/**
|
|
* Return a varchar type-formatted string
|
|
*
|
|
* @param array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function varchar($values)
|
|
{
|
|
$collation = MSSQLDatabase::get_collation();
|
|
$collationSQL = $collation ? " COLLATE $collation" : "";
|
|
return "nvarchar(" . $values['precision'] . ")$collationSQL null";
|
|
}
|
|
|
|
/**
|
|
* Return a 4 digit numeric type.
|
|
*
|
|
* @param array $values
|
|
* @return string
|
|
*/
|
|
public function year($values)
|
|
{
|
|
return 'numeric(4)';
|
|
}
|
|
|
|
/**
|
|
* This returns the column which is the primary key for each table
|
|
*
|
|
* @param bool $asDbValue
|
|
* @param bool $hasAutoIncPK
|
|
* @return string
|
|
*/
|
|
public function IdColumn($asDbValue = false, $hasAutoIncPK = true)
|
|
{
|
|
if ($asDbValue) {
|
|
return 'int not null';
|
|
} elseif ($hasAutoIncPK) {
|
|
return 'int identity(1,1)';
|
|
} else {
|
|
return 'int not null';
|
|
}
|
|
}
|
|
|
|
public function hasTable($tableName)
|
|
{
|
|
return (bool)$this->preparedQuery(
|
|
"SELECT table_name FROM information_schema.tables WHERE table_name = ?",
|
|
array($tableName)
|
|
)->value();
|
|
}
|
|
|
|
/**
|
|
* Returns the values of the given enum field
|
|
* NOTE: Experimental; introduced for db-abstraction and may changed before 2.4 is released.
|
|
*
|
|
* @param string $tableName
|
|
* @param string $fieldName
|
|
* @return array
|
|
*/
|
|
public function enumValuesForField($tableName, $fieldName)
|
|
{
|
|
$classes = array();
|
|
|
|
// Get the enum of all page types from the SiteTree table
|
|
$clause = $this->getConstraintCheckClause($tableName, $fieldName);
|
|
if ($clause) {
|
|
$classes = $this->enumValuesFromCheckClause($clause);
|
|
}
|
|
|
|
return $classes;
|
|
}
|
|
|
|
/**
|
|
* This is a lookup table for data types.
|
|
*
|
|
* For instance, MSSQL uses 'BIGINT', while MySQL uses 'UNSIGNED'
|
|
* and PostgreSQL uses 'INT'.
|
|
*
|
|
* @param string $type
|
|
* @return string
|
|
*/
|
|
public function dbDataType($type)
|
|
{
|
|
$values = array(
|
|
'unsigned integer'=>'BIGINT'
|
|
);
|
|
if (isset($values[$type])) {
|
|
return $values[$type];
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
protected function indexKey($table, $index, $spec)
|
|
{
|
|
return $index;
|
|
}
|
|
}
|