Class DbCache

DbCache Class Definition. Singleton class for handling the database cache.

Final
Namespace: Core\Modules\DB
Located at modules/db/dbcache.php

Methods summary

`public`	# `__construct( array $dsn )` Initialize DB Cache. Initialize DB Cache. Parameters `$dsn` Data source name. Uses `Core\Modules\DB\DbCache::setSchema()`
`public`	# `__clone( )` Cloning of DbCache is disallowed. Cloning of DbCache is disallowed.
`public`	# `__set( string $attr, mixed $val )` Set method. Set method. Parameters `$attr` Attribute name. `$val` Attribute value.
`public mixed`	# `__get( string $attr )` Get method. Get method. Parameters `$attr` Attribute name. Returns mixed
`public`	# `setCache( string $table, string $query, array $result )` Cache a query and its result. Cache a query and its result. Parameters `$table` Table name. `$query` SQL query. `$result` Result array.
`public array`	# `getCache( string $table, string $query = null )` Get the result of a cached query, or return the whole cache. Get the result of a cached query, or return the whole cache. Parameters `$table` Table name. `$query` Query string(optional). Returns array
`public`	# `clearCache( string $table )` Clears the cache for a given table. Clears the cache for a given table. Parameters `$table` Table name.
`public boolean`	# `getTable( string $name )` Get the state of a table. Get the state of a table. Parameters `$name` Name of the table. Returns boolean
`public object`	# `getStatement( string $query )` Get a database statement. Get a database statement. Parameters `$query` It's used for a key. Returns object
`private`	# `setSchema( string $table, array $value )` Set a table schema. Set a table schema. Parameters `$table` Name of the table. `$value` Schema data. Used by Core\Modules\DB\DbCache::__construct()
`public array`	# `getSchema( string $table )` Get the table schema. Get the table schema. Parameters `$table` Name of the table. Returns array
`private array`	# `getSchemaMeta( string $tableName )` Get table meta information from cache or extract it, if missing. Get table meta information from cache or extract it, if missing. Parameters `$tableName` Name of the table. Returns array Uses `Core\Cache()` `Core\Modules\DB\DbCache::extractSchemaMeta()`
`private array`	# `extractSchemaMeta( string $tableName )` Retrieve meta information about supplied database table. Retrieve meta information about supplied database table. Parameters `$tableName` Name of the table. Returns array Throws LogicException Error extracting schema meta information. Uses `Core\DB()` `Core\Modules\DB\DbCache::associateType()` Used by Core\Modules\DB\DbCache::getSchemaMeta()
`private string`	# `associateType( string $type )` Associate the field type with specific value used in the queries. Associate the field type with specific value used in the queries. Parameters `$type` Field type. Returns string Used by Core\Modules\DB\DbCache::extractSchemaMeta()

Properties summary

`private boolean`	`$hasSchema` Whether there is a schema or not. Whether there is a schema or not.	# `false`
`public array`	`$cache` Stores the queries cache. Stores the queries cache.	# `array()`
`private array`	`$schema` Stores tables schema. Stores tables schema.	# `array()`
`private array`	`$tables` Stores the state of the tables(if the table has been changed, after cached query). Stores the state of the tables(if the table has been changed, after cached query).	# `array()`
`private array`	`$statements` Stores the prepared database statements. Stores the prepared database statements.	# `array()`
`private array`	`$dsn` Data source name. Data source name.	#