Affects PMD Version:
6.0.0
Rule:
DataClass
Description:
Exception applying rule DataClass on file /Users/nik/tmp/OnActivityResult/onactivityresult/src/main/java/onactivityresult/ActivityResult.java, continuing with next rule
java.lang.NullPointerException
at net.sourceforge.pmd.lang.java.multifile.signature.JavaSigMask.covers(JavaSigMask.java:58)
at net.sourceforge.pmd.lang.java.multifile.signature.JavaOperationSigMask.covers(JavaOperationSigMask.java:75)
at net.sourceforge.pmd.lang.java.metrics.impl.AbstractJavaClassMetric.countMatchingOpSigs(AbstractJavaClassMetric.java:55)
at net.sourceforge.pmd.lang.java.metrics.impl.WocMetric.computeFor(WocMetric.java:35)
at net.sourceforge.pmd.lang.java.metrics.impl.WocMetric.computeFor(WocMetric.java:20)
at net.sourceforge.pmd.lang.metrics.AbstractMetricsComputer.computeForType(AbstractMetricsComputer.java:35)
at net.sourceforge.pmd.lang.metrics.AbstractMetricsFacade.computeForType(AbstractMetricsFacade.java:67)
at net.sourceforge.pmd.lang.java.metrics.JavaMetrics.get(JavaMetrics.java:55)
at net.sourceforge.pmd.lang.java.rule.design.DataClassRule.interfaceRevealsData(DataClassRule.java:48)
at net.sourceforge.pmd.lang.java.rule.design.DataClassRule.visit(DataClassRule.java:30)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaMetricsRule.visit(AbstractJavaMetricsRule.java:25)
at net.sourceforge.pmd.lang.java.ast.ASTClassOrInterfaceDeclaration.jjtAccept(ASTClassOrInterfaceDeclaration.java:33)
at net.sourceforge.pmd.lang.java.ast.AbstractJavaNode.childrenAccept(AbstractJavaNode.java:56)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.visit(AbstractJavaRule.java:83)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.visit(AbstractJavaRule.java:232)
at net.sourceforge.pmd.lang.java.ast.ASTTypeDeclaration.jjtAccept(ASTTypeDeclaration.java:35)
at net.sourceforge.pmd.lang.java.ast.AbstractJavaNode.childrenAccept(AbstractJavaNode.java:56)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.visit(AbstractJavaRule.java:83)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.visit(AbstractJavaRule.java:212)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.visitAll(AbstractJavaRule.java:39)
at net.sourceforge.pmd.lang.java.rule.AbstractJavaRule.apply(AbstractJavaRule.java:27)
at net.sourceforge.pmd.lang.rule.AbstractDelegateRule.apply(AbstractDelegateRule.java:321)
at net.sourceforge.pmd.RuleSet.apply(RuleSet.java:502)
at net.sourceforge.pmd.RuleSets.apply(RuleSets.java:143)
at net.sourceforge.pmd.SourceCodeProcessor.processSource(SourceCodeProcessor.java:181)
at net.sourceforge.pmd.SourceCodeProcessor.processSourceCode(SourceCodeProcessor.java:95)
at net.sourceforge.pmd.SourceCodeProcessor.processSourceCode(SourceCodeProcessor.java:50)
at net.sourceforge.pmd.processor.PmdRunnable.call(PmdRunnable.java:75)
at net.sourceforge.pmd.processor.MonoThreadProcessor.runAnalysis(MonoThreadProcessor.java:29)
at net.sourceforge.pmd.processor.AbstractPMDProcessor.processFiles(AbstractPMDProcessor.java:111)
at net.sourceforge.pmd.PMD.processFiles(PMD.java:315)
at net.sourceforge.pmd.ant.internal.PMDTaskImpl.doTask(PMDTaskImpl.java:192)
at net.sourceforge.pmd.ant.internal.PMDTaskImpl.execute(PMDTaskImpl.java:276)
at net.sourceforge.pmd.ant.PMDTask.execute(PMDTask.java:49)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at groovy.util.AntBuilder.performTask(AntBuilder.java:327)
at groovy.util.AntBuilder.nodeCompleted(AntBuilder.java:272)
at org.gradle.api.internal.project.ant.BasicAntBuilder.nodeCompleted(BasicAntBuilder.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.gradle.internal.metaobject.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:479)
at org.gradle.internal.metaobject.BeanDynamicObject.tryInvokeMethod(BeanDynamicObject.java:191)
at org.gradle.internal.metaobject.AbstractDynamicObject.invokeMethod(AbstractDynamicObject.java:160)
at org.gradle.api.internal.project.antbuilder.AntBuilderDelegate.nodeCompleted(AntBuilderDelegate.java:118)
at groovy.util.BuilderSupport.doInvokeMethod(BuilderSupport.java:154)
at groovy.util.BuilderSupport.invokeMethod(BuilderSupport.java:67)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133)
at org.gradle.api.plugins.quality.internal.PmdInvoker$_invoke_closure2.doCall(PmdInvoker.groovy:62)
at sun.reflect.GeneratedMethodAccessor796.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
at groovy.lang.Closure.call(Closure.java:414)
at groovy.lang.Closure.call(Closure.java:430)
at org.gradle.api.internal.ClosureBackedAction.execute(ClosureBackedAction.java:71)
at org.gradle.api.internal.ClosureBackedAction.execute(ClosureBackedAction.java:53)
at org.gradle.api.internal.project.antbuilder.DefaultIsolatedAntBuilder$2.execute(DefaultIsolatedAntBuilder.java:152)
at org.gradle.api.internal.project.antbuilder.DefaultIsolatedAntBuilder$2.execute(DefaultIsolatedAntBuilder.java:134)
at org.gradle.api.internal.project.antbuilder.ClassPathToClassLoaderCache.withCachedClassLoader(ClassPathToClassLoaderCache.java:134)
at org.gradle.api.internal.project.antbuilder.DefaultIsolatedAntBuilder.execute(DefaultIsolatedAntBuilder.java:128)
at org.gradle.api.internal.project.IsolatedAntBuilder$execute$2.call(Unknown Source)
at org.gradle.api.plugins.quality.internal.PmdInvoker.invoke(PmdInvoker.groovy:60)
at org.gradle.api.plugins.quality.Pmd.run(Pmd.java:92)
at sun.reflect.GeneratedMethodAccessor785.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:46)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:780)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:747)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:748)
Code Sample demonstrating the issue:
package onactivityresult;
import java.util.LinkedHashMap;
import java.util.Map;
import onactivityresult.internal.IOnActivityResult;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
public final class ActivityResult {
private static final String ACTIVITY_RESULT_CLASS_SUFFIX = "$$OnActivityResult";
static final Map<Class<?>, IOnActivityResult<Object>> ON_ACTIVITY_RESULTS = new LinkedHashMap<>();
@NonNull
static IOnActivityResult<Object> createOnActivityResultClassFor(final Object object) throws InstantiationException, IllegalAccessException, ClassNotFoundException {
final IOnActivityResult<Object> activityResultForClass = findActivityResultForClass(object.getClass());
if (activityResultForClass == null) {
throw new ClassNotFoundException();
}
return activityResultForClass;
}
@Nullable
private static IOnActivityResult<Object> findActivityResultForClass(final Class<?> clazz) throws IllegalAccessException, InstantiationException {
final IOnActivityResult<Object> cachedOnActivityResult = ON_ACTIVITY_RESULTS.get(clazz);
if (cachedOnActivityResult != null) {
return cachedOnActivityResult;
}
final String className = clazz.getName();
if (className.startsWith("android.") || className.startsWith("java.")) {
return null;
}
IOnActivityResult<Object> onActivityResult;
try {
final Class<?> onActivityResultClass = clazz.getClassLoader().loadClass(className + ACTIVITY_RESULT_CLASS_SUFFIX);
// noinspection unchecked
onActivityResult = (IOnActivityResult<Object>) onActivityResultClass.newInstance();
} catch (final ClassNotFoundException ignore) {
onActivityResult = findActivityResultForClass(clazz.getSuperclass());
}
ON_ACTIVITY_RESULTS.put(clazz, onActivityResult);
return onActivityResult;
}
public static OnResult onResult(final int requestCode, final int resultCode, @Nullable final Intent intent) {
return new OnResult(requestCode, resultCode, intent);
}
private ActivityResult() {
throw new AssertionError("No instances.");
}
public static final class OnResult {
private final int mRequestCode;
private final int mResultCode;
@Nullable private final Intent mIntent;
OnResult(final int requestCode, final int resultCode, @Nullable final Intent intent) {
mRequestCode = requestCode;
mResultCode = resultCode;
mIntent = intent;
}
/**
* @param object with annotated {@link OnActivityResult} methods which will be called depending on the given parameters
* @return whether or not a function was called for the given parameters
*/
public <T> boolean into(@NonNull final T object) {
final IOnActivityResult<Object> onActivityResult;
try {
onActivityResult = ActivityResult.createOnActivityResultClassFor(object);
} catch (final ClassNotFoundException classNotFound) {
throw new ActivityResultRuntimeException("Could not find OnActivityResult class for " + object.getClass().getName(), classNotFound);
} catch (final IllegalAccessException illegalAccessException) {
throw new ActivityResultRuntimeException("Can't create OnActivityResult class for " + object.getClass().getName(), illegalAccessException);
} catch (final InstantiationException instantiationException) {
throw new ActivityResultRuntimeException("Exception when handling IOnActivityResult " + instantiationException.getMessage(), instantiationException);
}
return onActivityResult.onResult(object, mRequestCode, mResultCode, mIntent);
}
}
public static class ActivityResultRuntimeException extends RuntimeException {
public ActivityResultRuntimeException(final String detailMessage, final Throwable throwable) {
super(detailMessage, throwable);
}
}
}
Running PMD through: [Gradle]
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