saffron.ext
Class JdbcConnection

java.lang.Object
  |
  +--saffron.ext.JdbcConnection

All Implemented Interfaces:

Connection

public abstract class JdbcConnection

extends Object

implements Connection

A JdbcConnection is an implementation of Connection which gets its data from a JDBC database.

Derived classes must implement Connection.getSchema() and getSchemaStatic().

Since:

10 November, 2001

Version:

$Id: //open/saffron/src/main/saffron/ext/JdbcConnection.java#2 $

Author:

jhyde

Field Summary

(package private) Connection

sqlConnection

Constructor Summary

JdbcConnection(Connection sqlConnection)

Method Summary

Object	contentsAsArray(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.
Connection	getConnection()
static Schema	getSchemaStatic()
void	setConnection(Connection sqlConnection)

Methods inherited from class java.lang.Object

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

Methods inherited from interface saffron.Connection

getSchema

Field Detail

sqlConnection

Connection sqlConnection

Constructor Detail

JdbcConnection

public JdbcConnection(Connection sqlConnection)

Method Detail

getConnection

public Connection getConnection()

setConnection

public void setConnection(Connection sqlConnection)

contentsAsArray

public Object contentsAsArray(String tableName)

Description copied from interface: Connection

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 Schema.getTableForMember(java.lang.String)(tableName).Table.toRel(saffron.opt.Cluster, openjava.ptree.Expression)(cluster, exp).

Specified by:

contentsAsArray in interface Connection

getSchemaStatic

public static Schema getSchemaStatic()