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DATAMONGO-2497 - Update documentation regarding @Transient properties usage in the persistence constructor.

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Mark Paluch
2020-03-19 15:37:30 +01:00
parent 4465ed9819
commit 6389055d3a
1 changed files with 1 additions and 1 deletions
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src/main/asciidoc/reference/mapping.adoc
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@@ -416,7 +416,7 @@ The MappingMongoConverter can use metadata to drive the mapping of objects to do
* `@TextIndexed`: Applied at the field level to mark the field to be included in the text index.
* `@HashIndexed`: Applied at the field level for usage within a hashed index to partition data across a sharded cluster.
* `@Language`: Applied at the field level to set the language override property for text index.
* `@Transient`: By default all private fields are mapped to the document, this annotation excludes the field where it is applied from being stored in the database
* `@Transient`: By default, all fields are mapped to the document. This annotation excludes the field where it is applied from being stored in the database. Transient properties cannot be used within a persistence constructor as the converter cannot materialize a value for the constructor argument.
* `@PersistenceConstructor`: Marks a given constructor - even a package protected one - to use when instantiating the object from the database. Constructor arguments are mapped by name to the key values in the retrieved Document.
* `@Value`: This annotation is part of the Spring Framework . Within the mapping framework it can be applied to constructor arguments. This lets you use a Spring Expression Language statement to transform a key's value retrieved in the database before it is used to construct a domain object. In order to reference a property of a given document one has to use expressions like: `@Value("#root.myProperty")` where `root` refers to the root of the given document.
* `@Field`: Applied at the field level it allows to describe the name and type of the field as it will be represented in the MongoDB BSON document thus allowing the name and type to be different than the fieldname of the class as well as the property type.