问题
I need to retrieve all documents in a collection that the difference between new ISODate() and a date field of the document should be greater than a given parameter.
I can do this on mongo shell by the query:
db.getCollection('tb_registered_app').aggregate(
[
{
$project: {
difference: { $subtract: [ new ISODate(), "$ping_date" ] }
}
}
,
{
$match: {difference: { "$gte": 300000}}
}
]
)
I'm trying to use Spring Data MongoDB to execute the same query, with the code:
public List<RegisteredApp> getTimedOut(long timeout) {
return mongoTemplate.aggregate(newAggregation(project().andExpression("new ISODate() - ping_date").as("difference"), match(where("difference").gte(timeout))), RegisteredApp.class, RegisteredApp.class).getMappedResults();
}
but I'm always getting the exception:
org.springframework.expression.spel.SpelEvaluationException: EL1003E: A problem occurred whilst attempting to construct an object of type 'ISODate' using arguments '()'
at org.springframework.expression.spel.ast.ConstructorReference.findExecutorForConstructor(ConstructorReference.java:199)
at org.springframework.expression.spel.ast.ConstructorReference.createNewInstance(ConstructorReference.java:158)
at org.springframework.expression.spel.ast.ConstructorReference.getValueInternal(ConstructorReference.java:100)
at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:109)
at org.springframework.data.mongodb.core.spel.ExpressionNode.getValue(ExpressionNode.java:155)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer$ValueRetrievingNodeConversion.convert(SpelExpressionTransformer.java:621)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.transform(SpelExpressionTransformer.java:113)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.transform(SpelExpressionTransformer.java:58)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer$ExpressionNodeConversion.transform(SpelExpressionTransformer.java:215)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer$ExpressionNodeConversion.transform(SpelExpressionTransformer.java:205)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer$OperatorNodeConversion.convert(SpelExpressionTransformer.java:257)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.transform(SpelExpressionTransformer.java:113)
at org.springframework.data.mongodb.core.aggregation.SpelExpressionTransformer.transform(SpelExpressionTransformer.java:105)
at org.springframework.data.mongodb.core.aggregation.ProjectionOperation$ExpressionProjectionOperationBuilder$ExpressionProjection.toMongoExpression(ProjectionOperation.java:376)
at org.springframework.data.mongodb.core.aggregation.ProjectionOperation$ExpressionProjectionOperationBuilder$ExpressionProjection.toDocument(ProjectionOperation.java:371)
at org.springframework.data.mongodb.core.aggregation.ProjectionOperation.toDocument(ProjectionOperation.java:208)
at org.springframework.data.mongodb.core.aggregation.AggregationOperationRenderer.toDocument(AggregationOperationRenderer.java:55)
at org.springframework.data.mongodb.core.aggregation.Aggregation.toPipeline(Aggregation.java:645)
at org.springframework.data.mongodb.core.AggregationUtil.createPipeline(AggregationUtil.java:92)
at org.springframework.data.mongodb.core.MongoTemplate.doAggregate(MongoTemplate.java:2095)
at org.springframework.data.mongodb.core.MongoTemplate.aggregate(MongoTemplate.java:2071)
at org.springframework.data.mongodb.core.MongoTemplate.aggregate(MongoTemplate.java:1961)
at br.com.santander.snapi.collectors.repository.impl.RegisteredAppRepositoryImpl.getTimedOut(RegisteredAppRepositoryImpl.java:37)
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.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:359)
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:644)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:608)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
at com.sun.proxy.$Proxy92.getTimedOut(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
at com.sun.proxy.$Proxy92.getTimedOut(Unknown Source)
at br.com.santander.snapi.collectors.service.impl.RegisteredAppServiceImpl.getTimedOutApps(RegisteredAppServiceImpl.java:40)
at br.com.santander.snapi.collectors.scheduler.RegisteredAppScheduler.removeRegisteredApp(RegisteredAppScheduler.java:34)
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.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.expression.AccessException: Failed to resolve constructor
at org.springframework.expression.spel.support.ReflectiveConstructorResolver.resolve(ReflectiveConstructorResolver.java:115)
at org.springframework.expression.spel.ast.ConstructorReference.findExecutorForConstructor(ConstructorReference.java:191)
... 68 common frames omitted
Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1005E: Type cannot be found 'ISODate'
at org.springframework.expression.spel.support.StandardTypeLocator.findType(StandardTypeLocator.java:117)
at org.springframework.expression.spel.support.ReflectiveConstructorResolver.resolve(ReflectiveConstructorResolver.java:59)
... 69 common frames omitted
Any idea what am I doing wrong?
回答1:
Try this:
String jsonExpression = "{\"$subtract\":[new ISODate(),\"$ping_date\"]}";
AggregationOperation project = Aggregation.project().and(context -> context.getMappedObject(Document.parse(jsonExpression))).as("difference");
AggregationOperation match = Aggregation.match(Criteria.where("difference").gte("timeout"));
List<AggregationOperation> aggOps = new ArrayList<>();
aggOps.add(project);
aggOps.add(match);
Aggregation aggregation = Aggregation.newAggregation(aggOps);
return mongoTemplate.aggregate(aggregation, RegisteredApp.class, RegisteredApp.class).getMappedResults();
Basically, you can convert your javascript/JSON query to spring mongo template form by using this. You can also check out ArithmeticOperators.Subtract in org.springframework.data.mongodb.core.aggregation package.
I wrote this code a bit verbose, you can do the same without creating list and all other stuffs, as you had in question.
来源：https://stackoverflow.com/questions/57045748/difference-between-now-and-a-given-date