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Type:
Bug
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Resolution: Fixed
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Priority:
Minor - P4
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None
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Affects Version/s: 2.2.33
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Component/s: MongoDB 3.4
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Environment:linux ubuntu 16
Nodejs 8.9.1
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Empty show more show less
In the next code:
const cursor = db.collection('myCollection').aggregate([ a pipeline that produce empty elements ]); const a = await cursor.hasNext(); const b = await cursor.hasNext(); const c = await cursor.hasNext();
The variable 'a' contains false. However an error is thrown in line 3. this error is:
{
message:"cursor is exhausted"
stack: "Error: cursor is exhausted
at nextFunction (/my_project/node_modules/mongodb/node_modules/mongodb-core/lib/cursor.js:521:21)
at AggregationCursor.Cursor.next [as _next] (/my_project/node_modules/mongodb/node_modules/mongodb-core/lib/cursor.js:699:3)
at nextObject (/my_project/node_modules/mongodb/lib/cursor.js:680:8)
at AggregationCursor.Cursor.hasNext (/my_project/node_modules/mongodb/lib/cursor.js:223:14)
at Promise (/my_project/lib/components/stay-area/stay-area-entity-object.js:170:14)
at new Promise (<anonymous>)
at StayAreaEntityObject.cursorHasNext (/my_project/lib/components/stay-area/stay-area-entity-object.js:169:12)
at StayAreaEntityObject.getTimeByArea (/my_project/lib/components/stay-area/stay-area-entity-object.js:122:36)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7)"
}