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Polishing.

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Refactor fixture creation for easier readability. Tweak documentation wording.

See #4571
Original pull request: #4574
This commit is contained in:
Mark Paluch
2023-11-30 16:42:40 +01:00
parent e5b9f7d455
commit 6b8749278b
2 changed files with 153 additions and 57 deletions
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11
src/main/antora/modules/ROOT/pages/mongodb/mapping/mapping.adoc
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@@ -277,12 +277,15 @@ calling `get()` before the actual conversion
.Collection Handling
[NOTE]
====
Collection handing depends on the actual values retrieved from the MongoDB.
Collection handling depends on the actual values returned by MongoDB.
* If a document does **not** contain the field mapped to a collection, the mapping will not touch the property.
* If a document does **not** contain a field mapped to a collection, the mapping will not update the property.
Which means the value will remain `null`, a java default or any value set during object creation.
* If the document contains the field to be mapped, but the field holds a `null` value (like: `{ 'list' : null }`), the property value is set to `null` overriding any default value set during object creation.
* If the document contains the field to be mapped to a collection which is **not** `null` (like: `{ 'list' : [ ... ] }`), the collection is populated with the mapped values overriding any default value set during object creation.
* If a document contains a field to be mapped, but the field holds a `null` value (like: `{ 'list' : null }`), the property value is set to `null`.
* If a document contains a field to be mapped to a collection which is **not** `null` (like: `{ 'list' : [ ... ] }`), the collection is populated with the mapped values.
Generally, if you use constructor creation, then you can get hold of the value to be set.
Property population can make use of default initialization values if a property value is not being provided by a query response.
====
[[mapping-configuration]]