Drools 4.0.1 Released

We just released Drools version 4.0.1. This is a maintenance release whose focus was to address community feedback regarding the previous 4.0.0 release.
There are a lot of fixes and a bunch of minor improvements, and so, we strongly advise the update from 4.0.0 to 4.0.1. There are no expected backward compatibility issues.

Downloads, as usual from:

http://labs.jboss.com/drools/downloads.html

Happy Drooling.
Drools Team


 <h2>Release Notes: Drools 4.0.1<br /></h2><h2>Sub-task</h2>     <ul><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-821">JBRULES-821</a> ]     ValueList in rule model    </li></ul>     <h2>Feature Request</h2>     <ul><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-322">JBRULES-322</a> ]     Allow the conversion of normal Java projects to Drools projects    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-642">JBRULES-642</a> ]     Extract solver configuration    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-981">JBRULES-981</a> ]     Milestone    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1020">JBRULES-1020</a> ]     BRMS Custom Rule Selector for Creating Deployable Packages    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1039">JBRULES-1039</a> ]     Add Number Guess example with Rule Flow    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1041">JBRULES-1041</a> ]     Subflow    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1042">JBRULES-1042</a> ]     Integrate ruleflows in drools build    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1043">JBRULES-1043</a> ]     Enhanced Java completion proposals    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1051">JBRULES-1051</a> ]     Guided Editor does not remmeber the folder location for new editors    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1061">JBRULES-1061</a> ]     jsr94 constants wrong package builder config constant, same name as rulebase config constant    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1067">JBRULES-1067</a> ]     Allow RuleAgent to take a RuleBaseConfiguration to configure the RuleBase it creates    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1077">JBRULES-1077</a> ]     Decision tables to have ruleflow-group attribute column    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1084">JBRULES-1084</a> ]     Provide case insentive completions in eth DRL Editor for MVEL and Java completions     </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1090">JBRULES-1090</a> ]     Simple data field enums in BRMS    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1120">JBRULES-1120</a> ]     Implement Step Over for mvel debugger    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1123">JBRULES-1123</a> ]     Custom Consequence Exception handlers    </li></ul>     <h2>Bug</h2>     <ul><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-849">JBRULES-849</a> ]     DynamicRulesTest fails with JDK 1.6    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-992">JBRULES-992</a> ]     Optional dependencies not marked as optional in maven pom xmls    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1027">JBRULES-1027</a> ]     unable to use moderately complicated expression in from    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1030">JBRULES-1030</a> ]     NPE Building Rule with inexistent field    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1031">JBRULES-1031</a> ]     only 4 equality checks are made for fact    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1032">JBRULES-1032</a> ]     NPE in HashKey.equals when LHS checks for null object, the object is null, and there are more than 3 rules    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1033">JBRULES-1033</a> ]     clearAgenda removes scheduled activations twice, resulting in a NullPointerException    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1034">JBRULES-1034</a> ]     NullPointerException in a simple test    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1035">JBRULES-1035</a> ]     Deploy sources jars on mvn deploy    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1036">JBRULES-1036</a> ]     dialect errors if after import declarations    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1037">JBRULES-1037</a> ]     Ruleflow RF file does not correctly generate RFM    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1038">JBRULES-1038</a> ]     addRuleFlow throws Exceptions    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1044">JBRULES-1044</a> ]     dialect appears to be a reserved keyword, not allowed in package name    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1045">JBRULES-1045</a> ]     Predicate Null Pointer exception when using Java 5 Enum    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1046">JBRULES-1046</a> ]     Business Object returns null due to Shadow Fact, unless declared final    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1047">JBRULES-1047</a> ]     class Cast Exception when using OR (||)    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1048">JBRULES-1048</a> ]     Context assist is not working for DSLs in Eclipse    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1049">JBRULES-1049</a> ]     WorkingMemory.iterateFactHandles() generates endless loop with 4.0GA.     </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1050">JBRULES-1050</a> ]     Extra space between variable and field name in LHS causes crash    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1052">JBRULES-1052</a> ]     When Inserting a fact cannot set a String field    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1053">JBRULES-1053</a> ]     Import collision when static inner classes of 2 different classes have same name    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1054">JBRULES-1054</a> ]     DSL-Editor: "Add" button does not work    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1055">JBRULES-1055</a> ]     Regex-Special characters can not be used in DSLs.    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1056">JBRULES-1056</a> ]     Performance of RuleBase().addPackage(.) goes down on sub sequent instances of RuleBase with large number of packages.    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1057">JBRULES-1057</a> ]     properties keyword list is missing memberof    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1058">JBRULES-1058</a> ]     nested accessors with Sets - "not contains" is not a valid operator for MVEL    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1063">JBRULES-1063</a> ]     Failing location determination tests    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1064">JBRULES-1064</a> ]     "->" notation for predicates missing in documentation    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1065">JBRULES-1065</a> ]     Unable to return Declaration for identifier    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1066">JBRULES-1066</a> ]     org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction is not serializable    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1069">JBRULES-1069</a> ]     DSL sentence widget is too small and combobox with sentences should not be expanded    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1070">JBRULES-1070</a> ]     Exception with "not in" condition with  (int-values)    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1071">JBRULES-1071</a> ]     BinaryRuleBaseLoader doesn't accept custom ClassLoader    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1073">JBRULES-1073</a> ]     CompositeContextEntry is raising NPE    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1079">JBRULES-1079</a> ]     Problem with "!=" field constraint    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1083">JBRULES-1083</a> ]     Brackets are not always optional for non-existential quantifier "not"     </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1085">JBRULES-1085</a> ]     Rule fires before calling fireAllRules    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1086">JBRULES-1086</a> ]     InitialFact should not be shadowed    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1087">JBRULES-1087</a> ]     Context Assistant that shows list of filtered DSL does not work on DRL editor    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1089">JBRULES-1089</a> ]     Getting "could not access property ('=')" for a valid rule.    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1091">JBRULES-1091</a> ]     NullPointerException when the 'result' block of an 'accumulate' function returns null    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1092">JBRULES-1092</a> ]     Invalid Java code generated from 'accumulate' function with nested classes    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1093">JBRULES-1093</a> ]     ClassObjectFilter is not accepting subclasses of the given class    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1094">JBRULES-1094</a> ]     PackageBuilderConfiguration.setDialectConfiguration() method is not correctly setting dialect configurations    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1096">JBRULES-1096</a> ]     NPE when using "exists" with "from"    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1097">JBRULES-1097</a> ]     Manual html_single does not have TOC entry for Chapter 9 BRMS    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1100">JBRULES-1100</a> ]     BRMS Bug on view source in weblogic    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1101">JBRULES-1101</a> ]     MVEL direct property accessors being converted to a ReturnValueConstraint    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1102">JBRULES-1102</a> ]     Bug in DefaultBetaConstraint class indexing to never turn on    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1104">JBRULES-1104</a> ]     Inserted internal Objects (like InitialFactImpl)  are lost if no matching ObjectTypeNodes    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1105">JBRULES-1105</a> ]     web.xml does not conform web-app_2_3.dtd    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1106">JBRULES-1106</a> ]     Copied rules using a guided DSL in BRMS produce duplicate rule names in built binary packages.    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1113">JBRULES-1113</a> ]     renaming a package messes up the assets in it     </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1114">JBRULES-1114</a> ]     Rule compilation not thread-safe    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1115">JBRULES-1115</a> ] Modifications to list objects contained within a bean and carried out during the execution of a rule are not reflected in the original list i.e. the changes are lost between the instance available within the rule and that of the original bean </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1116">JBRULES-1116</a> ]     "not" doesn't work for StatelessSessions    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1125">JBRULES-1125</a> ]     Java Step over is broken    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1126">JBRULES-1126</a> ]     Step over in MVEL is broken    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1127">JBRULES-1127</a> ]     External vars do not appear if you hve a break point on the first line    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1129">JBRULES-1129</a> ]     import does not work with code competion    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1131">JBRULES-1131</a> ]     Errors not including line numbers    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1134">JBRULES-1134</a> ]     drools variable appears twice in context assist    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1136">JBRULES-1136</a> ]     Rule not firing when expression contains nested accessors    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1137">JBRULES-1137</a> ]     Rules are not removed when they have shared nodes    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1139">JBRULES-1139</a> ]     code completion doesn't work as you type    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1140">JBRULES-1140</a> ]     Context Assist does not show available declarations and globals    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1142">JBRULES-1142</a> ]     nested accessors on the lhs of the memberOf (or not memberOf) operator lead to an exception    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1149">JBRULES-1149</a> ]     Parser is only saving last CE for prefixed AND/OR     </li></ul>     <h2>Task</h2>     <ul><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-678">JBRULES-678</a> ]     Remove spring dependency    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1028">JBRULES-1028</a> ]     importing .brxml into the application    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1059">JBRULES-1059</a> ]     Online typos in Section 1    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1062">JBRULES-1062</a> ]     Include DefaultSpecificationEntries and DefaultImplementationEntries in jar manifests    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1076">JBRULES-1076</a> ]     Typos, Build Instruction problems in Ref Manual, revision 14125 in Section 3.4    </li><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1088">JBRULES-1088</a> ]     Spelling check on docs     </li></ul>      <h2>Patch</h2>     <ul><li>    [ <a href="http://jira.jboss.com/jira/browse/JBRULES-1128">JBRULES-1128</a> ]     Xstream should be optional for drools-core and it should use the non-legacy groupId     </li></ul>

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