edu.wpi.cs.DSRG.xmldb.restructuring
Class Restructure

java.lang.Object
  |
  +--edu.wpi.cs.DSRG.xmldb.restructuring.Restructure

public class Restructure

extends java.lang.Object

Restructure.java reads from the mapping file that contains a list of desired operations. It then creates the operator instances for each operation and executes these operators. IMPORTANT NOTE: run the executable directly off of 'src', the directory path makes it statically such.

Since:

02/06/2000

Field Summary

(package private) JDBCClient	jdbc
(package private) java.util.Enumeration	operatorEnum
(package private) java.util.Vector	operatorObjects
(package private) UniqueID	unique_id

Constructor Summary

Restructure(JDBCClient jdbc, UniqueID unique_id)
This constructor keeps the JDBC connection references.

Method Summary

static void	main(java.lang.String[] argvs) The method main() initializes a RestructureComp instance for reading input.
void	materialize() The method materialize() materializes the current data catalog.
void	readOperators(java.lang.String input_file) The method readOperators() will read a set of operators from a specific file.
void	runOperators() The method runOperators() runs all the operators in the operator Vector by calling their respective executes.

Methods inherited from class java.lang.Object

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

Field Detail

jdbc

JDBCClient jdbc

operatorObjects

java.util.Vector operatorObjects

operatorEnum

java.util.Enumeration operatorEnum

unique_id

UniqueID unique_id

Constructor Detail

Restructure

public Restructure(JDBCClient jdbc,
                   UniqueID unique_id)

This constructor keeps the JDBC connection references. Initialize the "operators" vector.

Parameters:

jdbc - JDBCClient The JDBC client reference.

unique_id - UniqueID The generator for unique ids

Method Detail

main

public static void main(java.lang.String[] argvs)
                 throws java.lang.Exception

The method main() initializes a RestructureComp instance for reading input. reads in each operation, initialize operators, and finally executes these operators.

readOperators

public void readOperators(java.lang.String input_file)

The method readOperators() will read a set of operators from a specific file. It will parse the input file and create each operator objects and store those operators into the vector, and also pass an unique ID to each operator.

Parameters:

input_file - String The file name of the file containing the operators.

materialize

public void materialize()

The method materialize() materializes the current data catalog. It will: Get all the tables /views from data view catalog, create a materialized view which is like " create materialized view v1 refresh fast on commit build immediate as select * from ", and update the data view catalog. Note: So far the oracle cannot support refresh fast for complext queries. So, instead, we use the "refresh complete" to recompute the view whenever an update happens.

runOperators

public void runOperators()

The method runOperators() runs all the operators in the operator Vector by calling their respective executes.