[jboss-jira] [JBoss JIRA] (DROOLS-221) Initialization of KieModule failes, because of an XStream ConversionException

[ https://issues.jboss.org/browse/DROOLS-221?page=com.atlassian.jira.plugin... ] Fabian Meyer updated DROOLS-221: -------------------------------- Description: {code} com.thoughtworks.xstream.converters.ConversionException: Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor : Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor ---- Debugging information ---- message : Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor cause-exception : com.thoughtworks.xstream.converters.reflection.ObjectAccessException cause-message : Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor class : org.drools.core.rule.KieModuleMetaInfo required-type : org.drools.core.rule.KieModuleMetaInfo converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter path : /org.drools.core.rule.KieModuleMetaInfo version : null ------------------------------- at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1058) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1042) at com.thoughtworks.xstream.XStream.fromXML(XStream.java:913) at com.thoughtworks.xstream.XStream.fromXML(XStream.java:904) at org.drools.core.rule.KieModuleMetaInfo.unmarshallMetaInfos(KieModuleMetaInfo.java:25) at org.drools.compiler.kie.builder.impl.AbstractKieModule.getTypesMetaInfo(AbstractKieModule.java:135) at org.drools.compiler.kie.builder.impl.AbstractKieModule.isTypeDeclaration(AbstractKieModule.java:126) at org.drools.compiler.kie.builder.impl.AbstractKieModule.getClassesMap(AbstractKieModule.java:117) at org.drools.compiler.kie.builder.impl.KieModuleKieProject.getClassesMap(KieModuleKieProject.java:64) at org.drools.compiler.kie.builder.impl.KieModuleKieProject.initClassLoader(KieModuleKieProject.java:51) at org.drools.compiler.kie.builder.impl.KieModuleKieProject.init(KieModuleKieProject.java:46) at org.drools.compiler.kie.builder.impl.KieContainerImpl.<init>(KieContainerImpl.java:64) at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:86) [...] Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.newInstance(PureJavaReflectionProvider.java:71) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:428) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:233) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ... 84 more {code} After adding a default constructor the same exception occurs for org.drools.core.rule.TypeMetaInfo Adding default constructors for both classes seems to fix the problem, but I don't know if there are any side effects because of uninitialized attributes. was: {code} com.thoughtworks.xstream.converters.ConversionException: Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor : Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor ---- Debugging information ---- message : Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor cause-exception : com.thoughtworks.xstream.converters.reflection.ObjectAccessException cause-message : Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor class : org.drools.core.rule.KieModuleMetaInfo required-type : org.drools.core.rule.KieModuleMetaInfo converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter path : /org.drools.core.rule.KieModuleMetaInfo version : null ------------------------------- at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1058) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1042) at com.thoughtworks.xstream.XStream.fromXML(XStream.java:913) at com.thoughtworks.xstream.XStream.fromXML(XStream.java:904) at org.drools.core.rule.KieModuleMetaInfo.unmarshallMetaInfos(KieModuleMetaInfo.java:25) at org.drools.compiler.kie.builder.impl.AbstractKieModule.getTypesMetaInfo(AbstractKieModule.java:135) at org.drools.compiler.kie.builder.impl.AbstractKieModule.isTypeDeclaration(AbstractKieModule.java:126) at org.drools.compiler.kie.builder.impl.AbstractKieModule.getClassesMap(AbstractKieModule.java:117) at org.drools.compiler.kie.builder.impl.KieModuleKieProject.getClassesMap(KieModuleKieProject.java:64) at org.drools.compiler.kie.builder.impl.KieModuleKieProject.initClassLoader(KieModuleKieProject.java:51) at org.drools.compiler.kie.builder.impl.KieModuleKieProject.init(KieModuleKieProject.java:46) at org.drools.compiler.kie.builder.impl.KieContainerImpl.<init>(KieContainerImpl.java:64) at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:86) [...] Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: Cannot construct org.drools.core.rule.KieModuleMetaInfo as it does not have a no-args constructor at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.newInstance(PureJavaReflectionProvider.java:71) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:428) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:233) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ... 84 more {code} -- This message is automatically generated by JIRA. 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