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Java Source Code / Java Documentation » Rule Engine » Mandarax » org.mandarax.examples.db

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.mandarax.examples.db .CreateKB

CreateKB

public class CreateKB (Code)

This class creates the knowledge base for the discount example. To generate the knowledge base, run the main method.

Note that the example works with a relational database. Any database should do as long as aggregation functions are supported. E.g., the free MySQL database or Oracle8 can be used. The example uses a SimpleDataSource to connect to the database. How to configure a particular database is described in the comment of this class.

In a real world scenario a knowledge base is probably created using a GUI and not by the direct execution of a script as it is done here.

Mandarax uses other (open source) libraries such as JDOM, the apache log4j logging library and the junit testing framework. The mandarax distribution contains the respective libraries. Please but these jar files in the classpath before running the example! In addition, the JDBC driver for the database used must also be in the classpath.
See Also:   SimpleDataSource
See Also:   CreateDB
since:
   2.2
author:
   Jens Dietrich
version:
   3.4 <7 March 05>

Field Summary
final public static String	QUERY_DATE_OF_LAST_TRANSACTION_BY_CUSTOMER
final public static String	QUERY_MAX_AMOUNT_BY_CUSTOMER
final public static String	QUERY_NUMBER_OF_TRANSACTIONS_BY_CUSTOMER
final public static String	QUERY_SUM_AMOUNT_BY_CUSTOMER
public SQLFunction	function_last_transaction_date_by_customer
public SQLFunction	function_max_amount_by_customer
public SQLFunction	function_number_transactions_by_customer
public SQLFunction	function_sum_amount_by_customer
public SimplePredicate	gets_discount
public SimplePredicate	has_category

Method Summary
public KnowledgeBase	createKB() Return the knowledge base for this example.
public static void	main(String[] args) Create the knowledge base.
public void	saveKB(KnowledgeBase kb) Save knowledge base to a file "kb.xml".

Field Detail

QUERY_DATE_OF_LAST_TRANSACTION_BY_CUSTOMER
final public static String QUERY_DATE_OF_LAST_TRANSACTION_BY_CUSTOMER(Code)

QUERY_MAX_AMOUNT_BY_CUSTOMER
final public static String QUERY_MAX_AMOUNT_BY_CUSTOMER(Code)

QUERY_NUMBER_OF_TRANSACTIONS_BY_CUSTOMER
final public static String QUERY_NUMBER_OF_TRANSACTIONS_BY_CUSTOMER(Code)

QUERY_SUM_AMOUNT_BY_CUSTOMER
final public static String QUERY_SUM_AMOUNT_BY_CUSTOMER(Code)

function_last_transaction_date_by_customer
public SQLFunction function_last_transaction_date_by_customer(Code)

function_max_amount_by_customer
public SQLFunction function_max_amount_by_customer(Code)

function_number_transactions_by_customer
public SQLFunction function_number_transactions_by_customer(Code)

function_sum_amount_by_customer
public SQLFunction function_sum_amount_by_customer(Code)

gets_discount
public SimplePredicate gets_discount(Code)

has_category
public SimplePredicate has_category(Code)

Method Detail

createKB
public KnowledgeBase createKB()(Code)
	Return the knowledge base for this example. a knowledge base

main
public static void main(String[] args)(Code)
	Create the knowledge base.

saveKB
public void saveKB(KnowledgeBase kb)(Code)
	Save knowledge base to a file "kb.xml". Parameters: kb - a knowledge base

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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