/*
* Copyright 2013 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.integrationtests;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.CompositeKnowledgeBuilder;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.junit.Test;
import java.util.ArrayList;
import java.util.List;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertFalse;
import static junit.framework.Assert.assertTrue;
public class RuleExtensionTest {
@Test
public void testRuleExtendsNonexistingRule() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"\n" +
"rule \"ExtYes\" extends \"Bas\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newByteArrayResource(str.getBytes()), ResourceType.DRL );
assertTrue( kbuilder.hasErrors() );
kbuilder.getErrors().iterator().next().toString().contains("Base");
}
@Test
public void testRuleExtendsBetweenDRLs() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"\n" +
"rule \"ExtYes\" extends \"Base\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL );
kbuilder.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL );
assertFalse(kbuilder.hasErrors());
KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession knowledgeSession = kb.newStatefulKnowledgeSession();
List list = new ArrayList();
knowledgeSession.setGlobal( "list", list );
knowledgeSession.fireAllRules();
assertEquals(0, list.size());
knowledgeSession.insert( "go" );
knowledgeSession.fireAllRules();
assertEquals( 1, list.size() );
}
@Test
public void testRuleExtendsOnIncrementalKB() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"ExtYes\" extends \"Base\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newByteArrayResource(str.getBytes()), ResourceType.DRL);
assertFalse(kbuilder.hasErrors());
KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
KnowledgeBuilder kbuilder2 = KnowledgeBuilderFactory.newKnowledgeBuilder( kb );
kbuilder2.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL );
assertFalse(kbuilder2.hasErrors());
StatefulKnowledgeSession knowledgeSession = kb.newStatefulKnowledgeSession();
List list = new ArrayList();
knowledgeSession.setGlobal( "list", list );
knowledgeSession.fireAllRules();
assertEquals( 0, list.size() );
knowledgeSession.insert( "go" );
knowledgeSession.fireAllRules();
assertEquals( 1, list.size() );
}
@Test
public void testRuleExtendsMissingOnIncrementalKB() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"ExtYes\" extends \"Bse\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL );
assertFalse(kbuilder.hasErrors());
KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
KnowledgeBuilder kbuilder2 = KnowledgeBuilderFactory.newKnowledgeBuilder( kb );
kbuilder2.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL );
assertTrue(kbuilder2.hasErrors());
}
@Test
public void testRuleExtendsWithCompositeKBuilder() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"ExtYes\" extends \"Base\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
CompositeKnowledgeBuilder ckb = kbuilder.batch();
ckb.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL )
.build();
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession knowledgeSession = kb.newStatefulKnowledgeSession();
List list = new ArrayList();
knowledgeSession.setGlobal( "list", list );
knowledgeSession.fireAllRules();
assertEquals( 0, list.size() );
knowledgeSession.insert( "go" );
knowledgeSession.fireAllRules();
assertEquals( 1, list.size() );
}
@Test
public void testRuleExtendsNonExistingWithCompositeKBuilder() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"ExtYes\" extends \"ase\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
CompositeKnowledgeBuilder ckb = kbuilder.batch();
ckb.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL )
.build();
assertTrue( kbuilder.hasErrors() );
}
@Test
public void testRuleExtendsNonExistingWithCompositeKBuilderOutOfOrder() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"ExtYes\" extends \"ase\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
CompositeKnowledgeBuilder ckb = kbuilder.batch();
ckb.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL )
.build();
assertTrue( kbuilder.hasErrors() );
System.out.println( kbuilder.getErrors() );
assertFalse( kbuilder.getErrors().toString().contains( "Circular" ) );
assertTrue( kbuilder.getErrors().toString().contains( "Base" ) );
}
@Test
public void testRuleExtendsWithCompositeKBuilderFreeOrder() {
// DROOLS-100
String str =
"package org.drools.test;\n" +
"\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" String( this == \"go\" )\n" +
"then\n" +
"end\n" +
"";
String str2 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"ExtYes\" extends \"Base\"\n" +
"when\n" +
"then\n" +
" list.add( 1 );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
CompositeKnowledgeBuilder ckb = kbuilder.batch();
ckb.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL )
.build();
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession knowledgeSession = kb.newStatefulKnowledgeSession();
List list = new ArrayList();
knowledgeSession.setGlobal( "list", list );
knowledgeSession.fireAllRules();
assertEquals( 0, list.size() );
knowledgeSession.insert( "go" );
knowledgeSession.fireAllRules();
assertEquals( 1, list.size() );
}
@Test
public void testRuleExtendsExtendsWithCompositeKBuilderFreeOrder() {
// DROOLS-100
String str1 =
"package org.drools.test;\n" +
"\n" +
"rule \"Base\"\n" +
"when\n" +
" $i : Integer( this < 5 )\n" +
"then\n" +
"end\n";
String str2 =
"package org.drools.test;\n" +
"\n" +
"rule \"ExtYes\" extends \"Base\"\n" +
"when\n" +
" $j : Integer( this > 5 )\n" +
"then\n" +
"end\n";
String str3 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"FinalRule\" extends \"ExtYes\"\n" +
"when\n" +
"then\n" +
" list.add( $i + $j );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
CompositeKnowledgeBuilder ckb = kbuilder.batch();
ckb.add( ResourceFactory.newByteArrayResource( str3.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str1.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL )
.build();
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession knowledgeSession = kb.newStatefulKnowledgeSession();
List<Integer> list = new ArrayList<Integer>();
knowledgeSession.setGlobal( "list", list );
knowledgeSession.fireAllRules();
assertEquals( 0, list.size() );
knowledgeSession.insert( 4 );
knowledgeSession.insert( 6 );
knowledgeSession.fireAllRules();
assertEquals( 1, list.size() );
assertEquals( 10, (int)list.get(0) );
}
@Test
public void testRuleCircularExtension() {
// DROOLS-100
String str1 =
"package org.drools.test;\n" +
"\n" +
"rule \"Base\" extends \"FinalRule\"\n" +
"when\n" +
" $i : Integer( this < 5 )\n" +
"then\n" +
"end\n";
String str2 =
"package org.drools.test;\n" +
"\n" +
"rule \"ExtYes\" extends \"Base\"\n" +
"when\n" +
" $j : Integer( this > 5 )\n" +
"then\n" +
"end\n";
String str3 =
"package org.drools.test;\n" +
"global java.util.List list;\n" +
"\n" +
"rule \"Dummy\"\n" +
"when\n" +
"then\n" +
"end\n" +
"rule \"FinalRule\" extends \"ExtYes\"\n" +
"when\n" +
"then\n" +
" list.add( $i + $j );\n" +
"end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
CompositeKnowledgeBuilder ckb = kbuilder.batch();
ckb.add( ResourceFactory.newByteArrayResource( str3.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str1.getBytes() ), ResourceType.DRL )
.add( ResourceFactory.newByteArrayResource( str2.getBytes() ), ResourceType.DRL )
.build();
assertTrue( kbuilder.hasErrors() );
assertEquals( 1, kbuilder.getErrors().size() );
assertTrue( kbuilder.getErrors().iterator().next().toString().contains("Circular") );
}
}