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Given the following document in collection:
{ "name" : "Tenant 1", "appAllocations" : [ { "appId" : "68e1cf5a-0253-4c4a-9bc1-1eb3f27d0902" , "maxUser" : 4 }, { "appId" : "1bb05dc0-3acf-41a3-a5c2-551db93187fb" , "maxUser" : 42 } ] }
When filtering it via $elemMatch and updating the entire embedded via positional operator $, the update failed:
$elemMatch
$
"$set" : { "appAllocations.$" : { "appId" : "68e1cf5a-0253-4c4a-9bc1-1eb3f27d0902", "maxUser" : 9 } }
Then the update failed:
org.junit.ComparisonFailure: Expected :{ "name" : "Tenant 1" , "appAllocations" : [ { "appId" : "68e1cf5a-0253-4c4a-9bc1-1eb3f27d0902" , "maxUser" : 9} , { "appId" : "1bb05dc0-3acf-41a3-a5c2-551db93187fb" , "maxUser" : 42}]} Actual :{ "name" : "Tenant 1" , "appAllocations" : [ { "appId" : "68e1cf5a-0253-4c4a-9bc1-1eb3f27d0902" , "maxUser" : 4} , { "appId" : "1bb05dc0-3acf-41a3-a5c2-551db93187fb" , "maxUser" : 42}]}
However, this works on real MongoDB.
Only update one field:
"$set" : { "appAllocations.$.maxUser" : 9 }
@Test public void testPositionalOperatorWithElemMatch2() { String random1 = UUID.randomUUID().toString(); String random2 = UUID.randomUUID().toString(); DBObject object = (DBObject) FongoJSON.parse("{ \"name\" : \"Tenant 1\", \"appAllocations\" : [ { \"appId\" : \"" + random1 + "\" , \"maxUser\" : 4} , { \"appId\"" + ": \"" + random2 + "\" , \"maxUser\" : 42}]}"); DBObject query = (DBObject) FongoJSON.parse("{ \"appAllocations\" : { \"$elemMatch\" : { \"appId\" : \"" + random1 + "\"}}}"); DBObject update = (DBObject) FongoJSON.parse("{ \"$set\" : { \"appAllocations.$\" : { \"appId\" : \"" + random1 + "\", \"maxUser\" : 9 }}}"); System.out.println("update: " + update); DBObject expected = (DBObject) FongoJSON.parse("{ \"name\" : \"Tenant 1\", \"appAllocations\" : [ { \"appId\" : \"" + random1 + "\" , \"maxUser\" : 9} , { \"appId\"" + ": \"" + random2 + "\" , \"maxUser\" : 42}]}"); UpdateEngine updateEngine = new UpdateEngine(); assertEquals(expected.toString(), updateEngine.doUpdate(object, update, query, false).toString()); }
The text was updated successfully, but these errors were encountered:
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Overview
Given the following document in collection:
{ "name" : "Tenant 1", "appAllocations" : [ { "appId" : "68e1cf5a-0253-4c4a-9bc1-1eb3f27d0902" , "maxUser" : 4 }, { "appId" : "1bb05dc0-3acf-41a3-a5c2-551db93187fb" , "maxUser" : 42 } ] }When filtering it via
$elemMatchand updating the entire embedded via positional operator$, the update failed:Then the update failed:
However, this works on real MongoDB.
Workaround
Only update one field:
Reproduction
The text was updated successfully, but these errors were encountered: