net.sf.saffron.core
Class SaffronConnectionDecorator

java.lang.Object
  |
  +--net.sf.saffron.core.SaffronConnectionDecorator

All Implemented Interfaces:

SaffronConnection

public abstract class SaffronConnectionDecorator

extends Object

implements SaffronConnection

Base for a class which wraps a SaffronConnection and extends its functionality.

See the Decorator Pattern.

Since:

Dec 9, 2003

Version:

$Id: $

Author:

jhyde

Field Summary

protected SaffronConnection

connection The underlying SaffronConnection.

Constructor Summary

protected

SaffronConnectionDecorator(SaffronConnection connection)

Method Summary

Object	contentsAsArray(String qualifier, String tableName) In theory, this method returns the contents of tableName as an array; in practice, it is a placeholder recognized by the optimizer to do something much more efficient.
SaffronSchema	getSaffronSchema() Returns the schema underlying this connection.

Methods inherited from class java.lang.Object

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

Field Detail

connection

protected final SaffronConnection connection

The underlying SaffronConnection.

Constructor Detail

SaffronConnectionDecorator

protected SaffronConnectionDecorator(SaffronConnection connection)

Method Detail

getSaffronSchema

public SaffronSchema getSaffronSchema()

Description copied from interface: SaffronConnection

Returns the schema underlying this connection. Non-abstract classes implementing this interface must also provide public static Schema getSaffronSchemaStatic().

Specified by:

getSaffronSchema in interface SaffronConnection

contentsAsArray

public Object contentsAsArray(String qualifier,
                              String tableName)

Description copied from interface: SaffronConnection

In theory, this method returns the contents of tableName as an array; in practice, it is a placeholder recognized by the optimizer to do something much more efficient. This involves calling SaffronSchema.getTableForMember(java.lang.String[])(qualifier,tableName).SaffronTable.toRel(net.sf.saffron.opt.VolcanoCluster, net.sf.saffron.core.SaffronConnection)(cluster, exp).

Specified by:

contentsAsArray in interface SaffronConnection