ModSQL
Class TableReader.TableAccess

java.lang.Object
  |
  +--ModSQL.TableReader.TableAccess

Enclosing class:

TableReader

class TableReader.TableAccess

extends Object

Class to register access to particular tables and whether the tables can be accessed via an indexed column. This class is used when optimizing the join order to figure out which functions access which tables.

Field Summary

BitSet	index_available Tables that may be accessed via an index.
BitSet	table_needed Tables needed by Function.

Constructor Summary

TableReader.TableAccess()
Constructor.

Method Summary

boolean

forReader(TableReader reader) Returns true if this object is from the specified table reader.

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

table_needed

public BitSet table_needed

Tables needed by Function.

index_available

public BitSet index_available

Tables that may be accessed via an index.

Constructor Detail

TableReader.TableAccess

public TableReader.TableAccess()

Constructor.

Method Detail

forReader

public boolean forReader(TableReader reader)

Returns true if this object is from the specified table reader.

Parameters:

reader - parent to test for

Returns:

true if object is from reader