com.mckoi.database

Class AbstractQueryContext

java.lang.Object

com.mckoi.database.AbstractQueryContext

All Implemented Interfaces:

QueryContext

Direct Known Subclasses:

DatabaseQueryContext

public abstract class AbstractQueryContext
extends Object
implements QueryContext

An abstract implementation of QueryContext

Author:

Tobias Downer

Constructor Summary

Constructors

Constructor and Description
AbstractQueryContext()

Method Summary

Modifier and Type	Method and Description
void	addMarkedTable(String mark_name, Table table) Marks a table in a query plan.
void	clearCache() Clears the cache of any cached tables.
Table	getCachedNode(long id) Returns a cached table or null if it isn't cached.
Table	getMarkedTable(String mark_name) Returns a table that was marked in a query plan or null if no mark was found.
void	putCachedNode(long id, Table table) Put a Table into the cache.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mckoi.database.QueryContext

currentSequenceValue, getFunctionLookup, getSystem, getUserName, nextSequenceValue, setSequenceValue

Constructor Detail

AbstractQueryContext

public AbstractQueryContext()

Method Detail

addMarkedTable

public void addMarkedTable(String mark_name,
                           Table table)

Marks a table in a query plan.

Specified by:

addMarkedTable in interface QueryContext

getMarkedTable

public Table getMarkedTable(String mark_name)

Returns a table that was marked in a query plan or null if no mark was found.

Specified by:

getMarkedTable in interface QueryContext

putCachedNode

public void putCachedNode(long id,
                          Table table)

Put a Table into the cache.

Specified by:

putCachedNode in interface QueryContext

getCachedNode

public Table getCachedNode(long id)

Returns a cached table or null if it isn't cached.

Specified by:

getCachedNode in interface QueryContext

clearCache

public void clearCache()

Clears the cache of any cached tables.

Specified by:

clearCache in interface QueryContext