statelessrulesessiontest.java

jboss规则引擎

     */
    public void testExecuteRules() throws Exception {
        final StatelessRuleSession statelessSession = this.sessionBuilder.getStatelessRuleSession( this.bindUri );

        final List inObjects = new ArrayList();

        final Person bob = new Person( "bob" );
        inObjects.add( bob );

        final Person jeannie = new Person( "jeannie" );
        jeannie.addSister( "rebecca" );
        inObjects.add( jeannie );

        final Person rebecca = new Person( "rebecca" );
        rebecca.addSister( "jeannie" );
        inObjects.add( rebecca );

        // execute the rules
        final List outList = statelessSession.executeRules( inObjects );

        assertEquals( "incorrect size",
                      5,
                      outList.size() );

        assertContains( outList,
                        bob );

        assertContains( outList,
                        rebecca );

        assertContains( outList,
                        jeannie );

        assertContains( outList,
                        "rebecca and jeannie are sisters" );

        assertContains( outList,
                        "jeannie and rebecca are sisters" );

        statelessSession.release();
    }

    /**
     * Test executeRules with normal drl.
     */
    public void testExecuteRulesWithXml() throws Exception {
        final StatelessRuleSession statelessSession = this.sessionBuilder.getStatelessRuleSession( this.bindUri_xml );

        final List inObjects = new ArrayList();

        final Person bob = new Person( "bob" );
        inObjects.add( bob );

        final Person jeannie = new Person( "jeannie" );
        jeannie.addSister( "rebecca" );
        inObjects.add( jeannie );

        final Person rebecca = new Person( "rebecca" );
        rebecca.addSister( "jeannie" );
        inObjects.add( rebecca );

        // execute the rules
        final List outList = statelessSession.executeRules( inObjects );

        assertEquals( "incorrect size",
                      5,
                      outList.size() );

        assertContains( outList,
                        bob );

        assertContains( outList,
                        rebecca );

        assertContains( outList,
                        jeannie );

        assertContains( outList,
                        "rebecca and jeannie are sisters" );

        assertContains( outList,
                        "jeannie and rebecca are sisters" );

        statelessSession.release();
    }

    /**
     * Test executeRules drl with dsl.
     */
    public void testExecuteRules_dsl() throws Exception {
        final StatelessRuleSession statelessSession = this.sessionBuilder.getStatelessRuleSession( this.bindUri_drl );

        final List inObjects = new ArrayList();

        final Person bob = new Person( "bob" );
        inObjects.add( bob );

        final Person jeannie = new Person( "jeannie" );
        jeannie.addSister( "rebecca" );
        inObjects.add( jeannie );

        final Person rebecca = new Person( "rebecca" );
        rebecca.addSister( "jeannie" );
        inObjects.add( rebecca );

        // execute the rules
        final List outList = statelessSession.executeRules( inObjects );

        assertEquals( "incorrect size",
                      5,
                      outList.size() );

        assertContains( outList,
                        bob );

        assertContains( outList,
                        rebecca );

        assertContains( outList,
                        jeannie );

        assertContains( outList,
                        "rebecca and jeannie are sisters" );

        assertContains( outList,
                        "jeannie and rebecca are sisters" );

        statelessSession.release();
    }

    /**
     * Test executeRules with ObjectFilter.
     */
    public void testExecuteRulesWithFilter() throws Exception {
        final StatelessRuleSession statelessSession = this.sessionBuilder.getStatelessRuleSession( this.bindUri );

        final List inObjects = new ArrayList();

        final Person bob = new Person( "bob" );
        inObjects.add( bob );

        final Person rebecca = new Person( "rebecca" );
        rebecca.addSister( "jeannie" );
        inObjects.add( rebecca );

        final Person jeannie = new Person( "jeannie" );
        jeannie.addSister( "rebecca" );
        inObjects.add( jeannie );

        // execute the rules
        final List outList = statelessSession.executeRules( inObjects,
                                                            new PersonFilter() );
        assertEquals( "incorrect size",
                      3,
                      outList.size() );

        assertTrue( "where is bob",
                    outList.contains( bob ) );

        assertTrue( "where is rebecca",
                    outList.contains( rebecca ) );

        assertTrue( "where is jeannie",
                    outList.contains( jeannie ) );
    }

    /**
     * Test executeRules with ObjectFilter drl with dsl.
     */
    public void testExecuteRulesWithFilter_dsl() throws Exception {
        final StatelessRuleSession statelessSession = this.sessionBuilder.getStatelessRuleSession( this.bindUri_drl );

        final List inObjects = new ArrayList();

        final Person bob = new Person( "bob" );
        inObjects.add( bob );

        final Person rebecca = new Person( "rebecca" );
        rebecca.addSister( "jeannie" );
        inObjects.add( rebecca );

        final Person jeannie = new Person( "jeannie" );
        jeannie.addSister( "rebecca" );
        inObjects.add( jeannie );

        // execute the rules
        final List outList = statelessSession.executeRules( inObjects,
                                                            new PersonFilter() );
        assertEquals( "incorrect size",
                      3,
                      outList.size() );

        assertTrue( "where is bob",
                    outList.contains( bob ) );

        assertTrue( "where is rebecca",
                    outList.contains( rebecca ) );

        assertTrue( "where is jeannie",
                    outList.contains( jeannie ) );
    }

    /**
     * Filter accepts only objects of type Person.
     */
    static class PersonFilter
        implements
        ObjectFilter {
        public Object filter(final Object object) {
            return (object instanceof Person ? object : null);
        }

        public void reset() {
            // nothing to reset
        }
    }

    protected void assertContains(final List expected,
                                  final Object object) {
        if ( expected.contains( object ) ) {
            return;
        }

        fail( object + " not in " + expected );
    }
}