testdata.java

Mandarax是一个规则引擎的纯Java实现。它支持多类型的事实和基于反映的规则

/*
 * Copyright (C) 1999-2004 <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</a>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package test.org.mandarax.zkb;


import java.lang.reflect.Method;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.mandarax.kernel.*;
import org.mandarax.kernel.meta.*;
import org.mandarax.kernel.validation.*;
import org.mandarax.reference.AdvancedKnowledgeBase;
import org.mandarax.reference.validation.TestCaseImpl;
import org.mandarax.sql.*;
import org.mandarax.util.LogicFactorySupport;
import org.mandarax.util.logging.LogCategories;
import java.util.*;

/**
 * Utility providing all kind of test data for ZKB test cases.
 * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
 * @version 3.4 <7 March 05>
 * @since 2.2
 */
public class TestData implements LogCategories {

    static LogicFactory        lfactory = LogicFactory.getDefaultFactory ();
    static LogicFactorySupport lfs      = new LogicFactorySupport (lfactory);

    /**
     * Get a simple predicate associating Strings.
     * @return a simple predicate
     */
    public static SimplePredicate simplePredicate1() {
        Class[]         struct = { String.class, String.class };
        SimplePredicate p      = new SimplePredicate ("is father of", struct);
        return p;
    }

    /**
     * Get a simple predicate associating beans (=instances of Person).
     * @return a simple predicate
     */
    public static SimplePredicate simplePredicate2() {
        Class[]         struct = { Person.class, Person.class };
        // if this is renamed to "is father of" there will be failed test cases in
        // the zkb module - but only due to the compare mathod used 
        // (equals would work, but compare also compares properties)
        // by Jens, 26 Sept 03
        SimplePredicate p      = new SimplePredicate ("is father of 2", struct);
        return p;
    }

    /**
     * Get a simple predicate associating Strings.
     * @return a simple predicate
     */
    public static SimplePredicate simplePredicate3() {
        Class[]         struct = { Integer.class, Integer.class };
        SimplePredicate p      = new SimplePredicate ("<numeric dummy predicate>", struct);

        return p;
    }

    /**
     * Get a j predicate
     * @return a j predicate
     */
    public static JPredicate jPredicate() {
        try {
            Class      clazz = Object.class;
            Class[]    par   = { clazz };
            Method     m     = clazz.getMethod ("equals", par);
            JPredicate p     = new JPredicate (m);
            p.setName ("two objects are equal");
            return p;
        } catch(Exception x) {
            LOG_TEST.error ("Error building jpredicate", x);
        }

        return null;
    }

    /**
     * Get a jfunction returning a string.
     * @return a simple predicate
     */
    public static JFunction jFunction() {
        try {
            Class     clazz = String.class;
            Class[]   par   = { clazz };
            Method    m     = clazz.getMethod ("concat", par);
            JFunction f     = new JFunction (m);

            f.setName ("concatenate two strings");

            return f;
        } catch(Exception x) {
            LOG_TEST.error ("Error building jpredicate", x);
        }

        return null;
    }

    /**
     * Get a SQL function returning a string.
     * @return an sql function
     */
    public static SQLFunction sqlFunction1() {
        SQLFunction f = new SQLFunction ();

        f.setDataSource (dataSource ());
        f.setName ("sample sql function");
        f.setQuery ("SELECT NAME FROM PEOPLE WHERE ID = ?");

        Class[] struct = { Integer.class };

        f.setStructure (struct);
        f.setObjectRelationalMapping (new OneColumnMapping (String.class));

        return f;
    }

    /**
     * Get an SQL predicate associating two strings.
     * @return an sql predicate
     */
    public static SQLPredicate sqlPredicate() {
        SQLPredicate p = new SQLPredicate ();

        p.setDataSource (dataSource ());
        p.setName ("sample sql predicate");
        p.setQuery ("SELECT NAME,FATHER FROM FAMILY");
        Class[] struct = { String.class, String.class };
        p.setStructure (struct);
        p.setTypeMapping (new DefaultTypeMapping ());

        return p;
    }

    /**
     * Get a data source.
     * @return a data source
     */
    public static DataSource dataSource() {
        DummyDataSource ds = new DummyDataSource ();

        try {
            ds.setConnectString ("jdbc:odbc:test");
            ds.setDriver (sun.jdbc.odbc.JdbcOdbcDriver.class);
            ds.setUserName ("scott");
            ds.setPassword ("tiger");
            ds.setLoginTimeout (5000);
        } catch(SQLException x) {
            LOG_TEST.error ("Cannot initialize dummy data source", x);
        }

        return ds;
    }

    /**
     * Get a simple rule.
     * @return a rule
     */
    public static Rule rule1() {
        return lfs.rule (prereq1(),fact1());
    }
    
    /**
     * Get a rule with two prerequisites connected by AND
     * @return a rule
     */
    public static Rule andRule() {
        Rule r = lfs.rule (prereq1(),prereq2(),fact3());
        r.setBodyOrConnected(false);
        return r;
    }

    /**
     * Get a rule with two prerequisites connected by AND
     * @return a rule
     */
    public static Rule orRule() {
        Rule r = lfs.rule (prereq1(),prereq2(),fact3());
        r.setBodyOrConnected(true);
        return r;
    }
    /**
     * Get a rule with a negated and an unnegated prerequisite connected by AND
     * @return a rule
     */
    public static Rule negRule() {
    	Term[] terms = {lfs.variable("x",String.class),lfs.variable("y", String.class) };
        Prerequisite prereq1 = lfs.prereq(simplePredicate1(),terms,true);
        Prerequisite prereq2 = lfs.prereq(simplePredicate1(),terms,false);
        Fact concl = lfs.fact(simplePredicate1(),terms);        
        Rule r = lfs.rule (prereq1, prereq2,concl);
        return r;
    }    
    /**
     * Get a fact with a simple predicate and variable terms
     * @return a fact
     */
    public static Fact fact1() {
        Term[] terms = { lfs.variable ("x", String.class),
                         lfs.variable ("y", String.class) };
        return lfs.fact (simplePredicate1 (), terms);
    }

    /**
     * Get a fact with a simple predicate and variable terms
     * @return a fact
     */
    public static Fact fact2() {
        Term[] terms = { lfs.variable ("a person", Person.class),
                         lfs.variable ("another person", Person.class) };
        return lfs.fact (simplePredicate2 (), terms);
    }

    /**
     * Get a fact with a simple predicate and variable terms
     * @return a fact
     */
    public static Fact fact3() {
        Term[] terms = { lfs.variable ("x", Integer.class),
                         lfs.variable ("y", Integer.class) };
        return lfs.fact (simplePredicate3 (), terms);
    }
    
    /**
     * Get a prerequisite with a simple predicate and variable terms
     * @return a prerequisite
     */
    public static Prerequisite prereq1() {
        Term[] terms = { lfs.variable ("x", String.class),
                         lfs.variable ("y", String.class) };
        return lfs.prereq (simplePredicate1 (), terms);
    }

    /**
     * Get a prerequisite with a simple predicate and variable terms
     * @return a prerequisite
     */
    public static Prerequisite prereq2() {
        Term[] terms = { lfs.variable ("a person", Person.class),
                         lfs.variable ("another person", Person.class) };
        return lfs.prereq (simplePredicate2 (), terms);
    }

    /**
     * Get a prerequisite with a simple predicate and variable terms
     * @return a prerequisite
     */
    public static Prerequisite prereq3() {
        Term[] terms = { lfs.variable ("x", Integer.class),
                         lfs.variable ("y", Integer.class) };
        return lfs.prereq (simplePredicate3 (), terms);
    }
    
    /**
     * Get a fact with a simple predicate and constant terms
     * @return a fact
     */
    public static Fact fact4() {
        Term[] terms = { lfs.cons ("Jens", String.class),
                         lfs.cons ("Max", String.class) };

        return lfs.fact (simplePredicate1 (), terms);
    }

    /**
     * Get a fact with a simple predicate and constant terms
     * @return a fact
     */
    public static Fact fact5() {
        Person p1    = new Person (1, "Jens", 1966, 0, 12);
        Person p2    = new Person (2, "Max", 1993, 10, 10);
        Term[] terms = { lfs.cons (p1, Person.class),
                         lfs.cons (p2, Person.class) };
        return lfs.fact (simplePredicate2 (), terms);
    }

    /**
     * Get a fact with a simple predicate and constant terms
     * @return a fact
     */
    public static Fact fact6() {
        Term[] terms = { lfs.cons (new Integer (3), Integer.class),
                         lfs.cons (new Integer (42), Integer.class) };
        return lfs.fact (simplePredicate3 (), terms);
    }

    /**
     * Get a fact with a jpredicate and variable terms.
     * @return a fact
     */
    public static Fact fact7() {
        Term[] terms = { lfs.variable ("x", Object.class),
                         lfs.variable ("y", Object.class) };
        return lfs.fact (jPredicate (), terms);
    }

    /**
     * Get a fact with a simple predicate, a jfunction and variable terms.
     * @return a fact
     */
    public static Fact fact8() {
        Term[] terms = { lfs.cplx (jFunction (),
                                   lfs.variable ("x", String.class),
                                   lfs.variable ("y", String.class)),
                         lfs.variable ("z", String.class) };
        return lfs.fact (simplePredicate1 (), terms);
    }

    /**
     * Get a fact with a sql predicate and variable terms.
     * @return a fact
     */
    public static Fact fact9() {
        Term[] terms = { lfs.variable ("x", String.class),
                         lfs.variable ("y", String.class) };
        return lfs.fact (sqlPredicate (), terms);
    }

    /**
     * Get a fact with a simple predicate, a sql function and variable terms.
     * @return a fact
     */
    public static Fact fact10() {
        Term[] terms = { lfs.cplx (sqlFunction1 (),lfs.variable ("x", Integer.class)),
                         lfs.variable ("z", String.class) };
        return lfs.fact (simplePredicate1 (), terms);
    }

    /**
     * Get a SQL clause set.
     * @return a fact
     */
    public static SQLClauseSet sqlClauseSet() {
        return new SQLClauseSet (sqlPredicate (), "", 1000000);
    }
    /**
     * Get a query.
     * @return a query
     */
    public static Query query1() {
    	return lfs.query(fact1(),"a query");
    }
    /**
     * Get a query.
     * @return a query
     */
    public static Query query2() {
    	return lfs.query(fact1(),fact2(),"a query");
    }
    /**
     * Get a query.
     * @return a query
     */
    public static Query query3() {
    	return lfs.query(fact3(),"a query");
    }
    /**
     * Get a test case.
     * @return a test case.
     */ 
    public static TestCase testCase1() {
    	// very basic
    	Query query = query1();
    	ClauseSet[] assumptions = {fact1()};
    	Map[] expectedReplacements = new Map[0];
    	return lfactory.createTestCase(query,assumptions,TestCase.AT_BOTTOM,-1,true,expectedReplacements);
    }
    /**
     * Get a test case.
     * @return a test case.
     */ 
    public static TestCase testCase2() {
    	// very basic
    	Query query = query1();
    	ClauseSet[] assumptions = {fact1()};
    	Map[] expectedReplacements = new Map[0];
    	return lfactory.createTestCase(query,assumptions,TestCase.AT_BOTTOM,-1,false,expectedReplacements);
    }
    /**
     * Get a test case.
     * @return a test case.
     */ 
    public static TestCase testCase3() {
    	Query query = query2();
    	ClauseSet[] assumptions = {fact1()};
    	Map[] expectedReplacements = new Map[0];
    	return lfactory.createTestCase(query,assumptions,TestCase.AT_BOTTOM,42,true,expectedReplacements);
    }
    /**
     * Get a test case.
     * @return a test case.
     */ 
    public static TestCase testCase4() {
    	Query query = query2();
    	ClauseSet[] assumptions = {fact1(),fact2(),andRule(),orRule(),sqlClauseSet()};
    	Map[] expectedReplacements = new Map[0];
    	return lfactory.createTestCase(query,assumptions,TestCase.AT_BOTTOM,42,true,expectedReplacements);
    }
    /**
     * Get a test case.
     * @return a test case.
     */ 
    public static TestCase testCase5() {
    	Query query = query2();
    	ClauseSet[] assumptions = {fact1()};
    	Map[] expectedReplacements = new Map[1];
    	expectedReplacements[0] = new Hashtable();
    	expectedReplacements[0].put(lfactory.createVariableTerm("x",Integer.TYPE),new Integer(42));
    	return lfactory.createTestCase(query,assumptions,TestCase.ON_TOP,42,true,expectedReplacements);
    }
    /**
     * Get a test case.
     * @return a test case.
     */ 
    public static TestCase testCase6() {
    	Query query = query2();
    	ClauseSet[] assumptions = {fact1(),fact2(),andRule(),orRule(),sqlClauseSet()};
    	Map[] expectedReplacements = new Map[2];
    	expectedReplacements[0] = new Hashtable();
    	expectedReplacements[0].put(lfactory.createVariableTerm("x",Integer.TYPE),new Integer(42));
    	expectedReplacements[0].put(lfactory.createVariableTerm("dob",java.util.Date.class),new Date());
    	expectedReplacements[1] = new Hashtable();
    	expectedReplacements[1].put(lfactory.createVariableTerm("x",String.class),"test");
    	return lfactory.createTestCase(query,assumptions,TestCase.ON_TOP,42,true,expectedReplacements);
    }

}