Fixes are available
APAR status
Closed as program error.
Error description
Loading a DE ruleset in debug mode throws the following exception: Caused by: java.lang.NullPointerException: Variable type is null at com.ibm.rules.engine.lang.semantics. SemLocalVariableDeclaration.<init>(SemLocalVariableDeclaration. java:68) at com.ibm.rules.engine.lang.semantics. SemLanguageFactoryImpl.declareVariable(SemLanguageFactoryImpl. java:487) at com.ibm.rules.engine.lang.semantics. SemLanguageFactoryImpl.declareVariable(SemLanguageFactoryImpl. java:478) at com.ibm.rules.engine.transform.debug.impl. SemDebugStatementTransformer.visit(SemDebugStatementTransformer. java:205) at com.ibm.rules.engine.transform.debug.impl. SemDebugStatementTransformer.visit(SemDebugStatementTransformer. java:49) at com.ibm.rules.engine.lang.semantics.SemReturn.accept( SemReturn.java:57) at com.ibm.rules.engine.lang.semantics.transform.statement. SemStatementCopier.transformStatement(SemStatementCopier.java: 88) at com.ibm.rules.engine.transform.debug.impl. SemDebugStatementTransformer.transformSelectedNotifiedStatement( SemDebugStatementTransformer.java:85) at com.ibm.rules.engine.transform.debug.impl. SemDebugStatementTransformer.transformStatement( SemDebugStatementTransformer.java:181) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformStatement( SemMainLangTransformer.java:610) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformStatements( SemMainLangTransformer.java:758) at com.ibm.rules.engine.lang.semantics.transform. BaseTransformer.mainTransformStatements(BaseTransformer.java: 472) at com.ibm.rules.engine.lang.semantics.transform.statement. SemStatementCopier.transformBlock(SemStatementCopier.java:113) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformBlock(SemMainLangTransformer. java:628) at com.ibm.rules.engine.lang.semantics.transform. BaseTransformer.mainTransformBlock(BaseTransformer.java:412) at com.ibm.rules.engine.lang.semantics.transform.statement. SemStatementCopier.visit(SemStatementCopier.java:251) at com.ibm.rules.engine.lang.semantics.transform.statement. SemStatementCopier.visit(SemStatementCopier.java:57) at com.ibm.rules.engine.lang.semantics.SemIf.accept(SemIf. java:74) at com.ibm.rules.engine.lang.semantics.transform.statement. SemStatementCopier.transformStatement(SemStatementCopier.java: 88) at com.ibm.rules.engine.transform.debug.impl. SemDebugStatementTransformer.transformSelectedNotifiedStatement( SemDebugStatementTransformer.java:85) at com.ibm.rules.engine.transform.debug.impl. SemDebugStatementTransformer.transformStatement( SemDebugStatementTransformer.java:181) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformStatement( SemMainLangTransformer.java:610) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformStatements( SemMainLangTransformer.java:758) at com.ibm.rules.engine.lang.semantics.transform. BaseTransformer.mainTransformStatements(BaseTransformer.java: 472) at com.ibm.rules.engine.lang.semantics.transform.member. SemMemberImplementationCopier.visit( SemMemberImplementationCopier.java:182) at com.ibm.rules.engine.lang.semantics.transform.member. SemMemberImplementationCopier.visit( SemMemberImplementationCopier.java:56) at com.ibm.rules.engine.lang.semantics.SemMethod$ DynamicImplementation.accept(SemMethod.java:62) at com.ibm.rules.engine.lang.semantics.transform.member. SemMemberImplementationCopier.transformMemberImplementation( SemMemberImplementationCopier.java:80) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformMemberImplementation( SemMainLangTransformer.java:547) at com.ibm.rules.engine.lang.semantics.transform. BaseTransformer.mainTransformMemberImplementation( BaseTransformer.java:359) at com.ibm.rules.engine.lang.semantics.transform.member. SemMethodCopier.transformMethodBody(SemMethodCopier.java:178) at com.ibm.rules.engine.transform.debug.impl. SemDebugMethodTransformer.transformMethodBody( SemDebugMethodTransformer.java:60) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformMethodBody( SemMainLangTransformer.java:447) at com.ibm.rules.engine.lang.semantics.transform. BaseTransformer.mainTransformMethodBody(BaseTransformer.java: 259) at com.ibm.rules.engine.lang.semantics.transform.type. SemClassCopier.transformMethodBodies(SemClassCopier.java:271) at com.ibm.rules.engine.lang.semantics.transform.type. SemClassCopier.transformMemberBodies(SemClassCopier.java:166) at com.ibm.rules.engine.lang.semantics.transform.type. SemClassCopier.transformMemberBodies(SemClassCopier.java:153) at com.ibm.rules.engine.transform.debug.impl. SemDebugTypeTransformer.transformMemberBodies( SemDebugTypeTransformer.java:69) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformMemberBodies( SemMainLangTransformer.java:311) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformMemberBodies( SemMainLangTransformer.java:272) at com.ibm.rules.engine.lang.semantics.transform. SemMainLangTransformer.transformObjectModel( SemMainLangTransformer.java:247) at com.ibm.rules.engine.transform.debug.impl. SemDebugMainLangTransformer.transformObjectModel( SemDebugMainLangTransformer.java:61) at com.ibm.rules.engine.transform.debug.impl. SemLocationModelRewriter.transform(SemLocationModelRewriter. java:58) at com.ibm.rules.engine.outline.EngineOutlineImpl. applyModelRewriter(EngineOutlineImpl.java:444) at com.ibm.rules.engine.outline.EngineOutlineImpl. applyModelRewriters(EngineOutlineImpl.java:415) at com.ibm.rules.engine.outline.EngineOutlineImpl. writeJarInStream(EngineOutlineImpl.java:516) at com.ibm.rules.engine.load.XUEngineLoader. createEngineDefinitionInDebugFromDSAR(XUEngineLoader.java:217)
Local fix
The engine does not handle properly null value returned in a block in a b2x method. In order to avoid the problem use and intermediary variable. Instead of return null; use Object obj = null; return obj;
Problem summary
Incorrect rule code generation for null value.
Problem conclusion
The code is fixed
Temporary fix
Comments
APAR Information
APAR number
RS01915
Reported component name
WDS FOR RULES
Reported component ID
5725B6903
Reported release
870
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-02-26
Closed date
2015-03-07
Last modified date
2015-03-07
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
999
Fix information
Fixed component name
WDS FOR RULES
Fixed component ID
5725B6903
Applicable component levels
R870 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSQP76","label":"IBM Operational Decision Manager"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"870","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
17 February 2022