edu.wpi.cs.DSRG.xmldb.operators
Class pushDownAttributeObject

java.lang.Object
  |
  +--edu.wpi.cs.DSRG.xmldb.operators.pushDownAttributeObject

All Implemented Interfaces:

Operator

public class pushDownAttributeObject

extends java.lang.Object

implements Operator

pushDownAttributeObject.java will move attribute a of item A to attribute b of item B constructor: public pushDownAttributeObject(JDBCClient client, String ChildItemName, String ChildAttributeName, String ParentItemName, String ParentAttributeName, String DTD_URI, int myID) member variables: client - used to connect to oracle ChildItemName - the name of the child item ChildAttributeName - the name of the child attribute ParentItemName - the name of the parent item ParentAttributeName - the name of the parent attribute DTD_URI - the location of the DTD DTD_ID - the id specifying which DTD to modify myID - the operator's id oldView - the old view rs - the resultset used for processing queries member functions: execute() - executes the queries

Field Summary

(package private) java.lang.String	ChildAttributeName
(package private) java.lang.String	ChildItemName
(package private) JDBCClient	client
(package private) java.lang.String	DTD_ID
(package private) java.lang.String	DTD_URI
(package private) int	myID
(package private) java.lang.String	oldView
(package private) java.lang.String	ParentAttributeName
(package private) java.lang.String	ParentItemName
(package private) java.sql.ResultSet	rs

Constructor Summary

pushDownAttributeObject(JDBCClient client, java.lang.String ParentItemName, java.lang.String ParentAttributeName, java.lang.String ChildItemName, java.lang.String ChildAttributeName, java.lang.String DTD_URI, int myID)
This constructor is used with an exisitng connection and initializes the member instances for each argument.

Method Summary

void	execute() The method execute() evaluates the queries associated with changing the DTDMs and creating new views on the data tables.

Methods inherited from class java.lang.Object

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

Field Detail

client

JDBCClient client

ChildItemName

java.lang.String ChildItemName

ChildAttributeName

java.lang.String ChildAttributeName

ParentItemName

java.lang.String ParentItemName

ParentAttributeName

java.lang.String ParentAttributeName

DTD_URI

java.lang.String DTD_URI

DTD_ID

java.lang.String DTD_ID

myID

int myID

oldView

java.lang.String oldView

rs

java.sql.ResultSet rs

Constructor Detail

pushDownAttributeObject

public pushDownAttributeObject(JDBCClient client,
                               java.lang.String ParentItemName,
                               java.lang.String ParentAttributeName,
                               java.lang.String ChildItemName,
                               java.lang.String ChildAttributeName,
                               java.lang.String DTD_URI,
                               int myID)

This constructor is used with an exisitng connection and initializes the member instances for each argument.

Parameters:

client - JDBCClient connection to database

ParentItemName - String name of the parent item

ParentAttributeName - String name of the attribute of the parent item

ChildItemName - String name of the child item to push attribute into

ChildAttributeName - String new name for the attribute that gets pushed down

Method Detail

execute

public void execute()
             throws java.lang.Exception

The method execute() evaluates the queries associated with changing the DTDMs and creating new views on the data tables.

Specified by:

execute in interface Operator