[ https://issues.jboss.org/browse/DROOLS-2937?page=com.atlassian.jira.plugi... ] Matteo Mortari updated DROOLS-2937: ----------------------------------- Description: Given {code:java} final DMNModel dmnModel = runtime.getModel("<wrong>", "<wrong>"); // please notice an end-user of the API might not having checked the result of the previous call is not a null. DMNContext emptyContext = DMNFactory.newContext(); DMNResult dmnResult = runtime.evaluateAll(dmnModel, emptyContext); {code} This would fail with: {code:java} java.lang.NullPointerException at org.kie.dmn.core.impl.DMNRuntimeImpl.performRuntimeTypeCheck(DMNRuntimeImpl.java:622) at org.kie.dmn.core.impl.DMNRuntimeImpl.evaluateAll(DMNRuntimeImpl.java:118) at org.kie.dmn.core.DMNRuntimeTypeCheckTest.testMisleadingNPEbyAPIusage(DMNRuntimeTypeCheckTest.java:199) ... {code} which is not very helpful for the end-user of API to understand he inadvertently passed a null model to the DMNRuntime.evaluateAll method. With the proposed change: {code:java} java.lang.NullPointerException: Kie DMN API parameter 'model' cannot be null. at java.util.Objects.requireNonNull(Objects.java:290) at org.kie.dmn.core.impl.DMNRuntimeImpl.evaluateAll(DMNRuntimeImpl.java:123) at org.kie.dmn.core.DMNRuntimeTypeCheckTest.testMisleadingNPEbyAPIusage(DMNRuntimeTypeCheckTest.java:199) ... {code} was: Given {code:java} final DMNModel dmnModel = runtime.getModel("<wrong>", "<wrong>"); // please notice an end-user of the API might not having checked the result of the previous call is not a null. DMNContext emptyContext = DMNFactory.newContext(); DMNResult dmnResult = runtime.evaluateAll(dmnModel, emptyContext); {code} This would fail with: -- This message was sent by Atlassian JIRA (v7.5.0#75005)