July 2011 - jboss-jira - Jboss List Archives

[JBoss JIRA] Created: (JBRULES-3065) Facts currently have to be Java Beans, but Mark has used POJOS, except the attached example does not work.

by Jim Tyrrell (JIRA)

Facts currently have to be Java Beans, but Mark has used POJOS, except the attached example does not work. ---------------------------------------------------------------------------------------------------------- Key: JBRULES-3065 URL: https://issues.jboss.org/browse/JBRULES-3065 Project: Drools Issue Type: Feature Request Security Level: Public (Everyone can see) Reporter: Jim Tyrrell Assignee: Mark Proctor Attachments: Screen shot 2011-06-06 at 2.02.00 PM.png, Screen shot 2011-06-06 at 2.02.14 PM.png, Screen shot 2011-06-06 at 2.02.37 PM.png, SimpleSpreadSheetBasedPOJO.java, SimpleSpreadSheetBasedTest.drl, SimpleSpreadSheetBasedTest.java When modeling spreadsheets for form/spreadsheet validation, see the attached screen shots, all of the tools use the convention of A, B, C for the column names (Open Office, Excel, and Numbers). When trying to create an object with variable names of A, B, etc, I get errors in the JBDS as the below: Description Resource Path Location Type BuildError: Unable to create Field Extractor for 'A' of '[ClassObjectType class=com.sample.SimpleSpreadSheetBasedPOJO]' in rule 'Validation 1' SimpleSpreadSheetBasedTest.drl /BugProject/src/main/rules line 16 Drools Error No amount of massaging can get this error to go away. When I run the attached classes, I get the following error message: Unable to create Field Extractor for 'A' of '[ClassObjectType class=com.sample.SimpleSpreadSheetBasedPOJO]' in rule 'Validation 1' : [Rule name='Validation 1'] java.lang.IllegalArgumentException: Could not parse knowledge. at com.sample.SimpleSpreadSheetBasedTest.readKnowledgeBase(SimpleSpreadSheetBasedTest.java:48) at com.sample.SimpleSpreadSheetBasedTest.main(SimpleSpreadSheetBasedTest.java:23) Even though a getter and setter method is available. So I created an ID field, this seems to work fine, but if I create a field A1, this does not, if I create ID1, this seems to work...so something is amiss in the way in which fields, methods, etc are marshaled. If a Java Bean is required that is fine, but then we need to retreat from marketing POJOs as facts, and also possibly create a better error message that tells us to use Java Beans and not POJOs. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

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[JBoss JIRA] Created: (JBRULES-2989) Slotted/named syntax for bindings silently accepted as positional argument

by Wolfgang Laun (JIRA)

Slotted/named syntax for bindings silently accepted as positional argument -------------------------------------------------------------------------- Key: JBRULES-2989 URL: https://issues.jboss.org/browse/JBRULES-2989 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-compiler (expert) Affects Versions: 5.2.0.CR1 Reporter: Wolfgang Laun Assignee: Mark Proctor declare Article artid : int; artname : String; custid : int; end rule "articles of a customer" when $a: Article( $artid: artid, $artname: artname, $custid : custid ; ) ### semicolon here! ### then System.out.println( "Art " + $artid + " " + $a.getArtname() + " by " + $custid ); end This is accepeted by the compiler without error indication, but preceding a semicolon only positional argument should be permitted. Expect: an error message, compilation failure. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-2956) Runtime error when using non-boolean expression as a constraint

by Wolfgang Laun (JIRA)

Runtime error when using non-boolean expression as a constraint --------------------------------------------------------------- Key: JBRULES-2956 URL: https://issues.jboss.org/browse/JBRULES-2956 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-compiler Affects Versions: 5.2.0.M2 Reporter: Wolfgang Laun Assignee: Mark Proctor declare Num num : Integer even : boolean end rule start when then insert( new Num( 42, true ) ); end rule sumem when $n: Num( num, num + 1, eval(num + 1) ) then end All of these constraints result in a RUNTIME error ar java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Boolean org.drools.base.mvel.MVELPredicateExpression.evaluate(MVELPredicateExpression.java:97) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-3139) NPE in KnowledgeAgentImpl due to missing change set

by Wolfgang Laun (JIRA)

NPE in KnowledgeAgentImpl due to missing change set --------------------------------------------------- Key: JBRULES-3139 URL: https://issues.jboss.org/browse/JBRULES-3139 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core (expert) Reporter: Wolfgang Laun Assignee: Mark Proctor A missing Change Set causes a NPE in KnowledgeAgentImpl. import java.net.URL; import org.drools.*; import org.drools.agent.*; import org.drools.conf.*; import org.drools.builder.*; import org.drools.io.*; public void setup() throws Exception { KnowledgeBaseConfiguration kBaseConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); kBaseConfig.setOption(EventProcessingOption.STREAM); // kBaseConfig.setOption( cehOption ); ResourceChangeScannerConfiguration rcsConf = ResourceFactory.getResourceChangeScannerService() .newResourceChangeScannerConfiguration(); rcsConf.setProperty("drools.resource.scanner.interval", "20"); ResourceFactory.getResourceChangeScannerService().configure( rcsConf ); KnowledgeAgentConfiguration kaConf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration(); kaConf.setProperty("drools.agent.scanDirectories", "true"); kaConf.setProperty("drools.agent.scanResources", "true"); kaConf.setProperty("drools.agent.newInstance", "false"); KnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase(kBaseConfig); KnowledgeAgent kAgent = KnowledgeAgentFactory.newKnowledgeAgent( "drools agent", kBase, kaConf); String urlString = "file://tmp/MissingChangeSet.xml"; try { URL url = new URL(urlString); Resource urlResource = ResourceFactory.newUrlResource(url); if( urlResource != null ){ System.out.println( "Resource " + urlResource ); } kAgent.applyChangeSet( urlResource ); } catch (Exception e) { System.out.println("Caught exception: " + e.getMessage()); e.printStackTrace(); } } Caught exception: null java.lang.NullPointerException at org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:223) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:189) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:174) at hashcode.Main.setup(Main.java:75) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-2801) Entry-point defaults for type, rule, package

by Wolfgang Laun (JIRA)

Entry-point defaults for type, rule, package -------------------------------------------- Key: JBRULES-2801 URL: https://jira.jboss.org/browse/JBRULES-2801 Project: Drools Issue Type: Feature Request Security Level: Public (Everyone can see) Reporter: Wolfgang Laun Assignee: Mark Proctor Implement the definition of the default entry point for an Event or Fact type via a metadata attribute, e.g.: declare X @role( event ) @entry-point( y ) end so that this a) declares the entry-point in the KnowledgeBase (the same way from entry-point "x" does) b) removes the need to use from entry-point with all patterns referring to X c) would still let me override the entry point with a "from entry-point" clause. The same attribute can be used inside a rule, where it is associated with all fact patterns without an explicit entry point. Here it also overrides an entry-point declared with the type's declare, if any. Since all rule attributes may also be used at package level (outside rules), this includes the new entry-point attribute. It will then be honoured in rules according to the current strategy for all other rule attributes. -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-3001) Free form expression constraints: unexpected execution result; unexpected failure to compile

by Wolfgang Laun (JIRA)

Free form expression constraints: unexpected execution result; unexpected failure to compile --------------------------------------------------------------------------------------------- Key: JBRULES-3001 URL: https://issues.jboss.org/browse/JBRULES-3001 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-compiler (expert) Affects Versions: 5.2.0.CR1 Reporter: Wolfgang Laun Assignee: Mark Proctor Given public class Customer { int custid; //... } The following rule always fires, for any value of custid. rule "articles of a customer" when $c: Customer( 150 <= custid <= 250 ) returns true then System.out.println( "Customer1 " + $c.getCustid() ); end But the constraint $c: Customer( 100 <= custid ) is refused by the compiler: Unable to build constraint as '100' is invalid : [Rule name='articles of a customer'] -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-2983) IooB exception when using positional notation on pojo fact

by Wolfgang Laun (JIRA)

IooB exception when using positional notation on pojo fact ---------------------------------------------------------- Key: JBRULES-2983 URL: https://issues.jboss.org/browse/JBRULES-2983 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-compiler (expert) Affects Versions: 5.2.0.CR1 Reporter: Wolfgang Laun Assignee: Mark Proctor If Sale is a Java class containing int custid and int amount, the following pattern crashes the builder: query bigSales ( int $custid, int $limit ) $s: Sale( $custid; amount >= $limit ) end -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-2986) Confusing error reporting due to incomplete constraint

by Wolfgang Laun (JIRA)

Confusing error reporting due to incomplete constraint ------------------------------------------------------ Key: JBRULES-2986 URL: https://issues.jboss.org/browse/JBRULES-2986 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-compiler (expert) Affects Versions: 5.2.0.CR1 Reporter: Wolfgang Laun Assignee: Mark Proctor declare Article artid : int; artname : String; custid : int; end declare Customer custid : int end rule "articles of a customer" when $c: Customer( $custid: custid ) $a: Article( $artid, artname == ("mou" + "se"), $custid : custid == $custid ) then end Produces many error messages (see below), where line number 1 and column numnber 1 are incorrect. Expect: only one error message, with correct line number. ==================================================================== Unable to Analyse Expression $artid: [Error: Failed to compile: 2 compilation error(s): - (1,1) unable to resolve method using strict-mode: ex50.Article.$artid() - (1,1) unqualified type in strict mode for: $artid] [Near : {... $artid ....}] ^ [Line: 1, Column: 1] : [Rule name='articles of a customer'] Rule Compilation error : [Rule name='articles of a customer'] ex50/Rule_articles_of_a_customer_0.java (14:690) : $artid cannot be resolved ==================================================================== -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-2987) Literal expression not possible in constraint

by Wolfgang Laun (JIRA)

Literal expression not possible in constraint --------------------------------------------- Key: JBRULES-2987 URL: https://issues.jboss.org/browse/JBRULES-2987 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-compiler (expert) Affects Versions: 3.0-beta3 Reporter: Wolfgang Laun Assignee: Mark Proctor declare Article artid : int; artname : String; custid : int; end declare Customer custid : int endrule "articles of a customer" when $c: Customer( $custid: custid ) $a: Article( $artid: artid, artname == "mou" + "se", $custid : custid == $custid ) then end This produces the (misleading) error message below, but should work according to Mark Proctor. Notice that artname == ("mou" + "se") works correctly. Unable to return Declaration for identifier '"mou" + "se"' : [Rule name='articles of a customer'] -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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[JBoss JIRA] Created: (JBRULES-2878) NPE due to session.update with 1 or 2 invalid operands

by Wolfgang Laun (JIRA)

NPE due to session.update with 1 or 2 invalid operands ------------------------------------------------------ Key: JBRULES-2878 URL: https://issues.jboss.org/browse/JBRULES-2878 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core Affects Versions: 5.1.1.FINAL Reporter: Wolfgang Laun Assignee: Mark Proctor Counter counter = new Counter( initial ); this.session.insert( counter ); And now each of these calls session.update( session.getFactHandle( null ), null ); session.update( session.getFactHandle( counter ), null ); session.update( session.getFactHandle( null ), counter ); results in a NPE Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:382) at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:981) at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:954) at org.drools.impl.StatefulKnowledgeSessionImpl.update(StatefulKnowledgeSessionImpl.java:266) -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 7 months

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jboss-jira July 2011