[#BloombergLP-baljsn-JsonConverter]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/baljsn.adoc[baljsn]::JsonConverter
:relfileprefix: ../../
:mrdocs:

This class provides a mechanism for copying the constituent values of certain `bdlat`‐compatible objects to `bdljsn::Json` objects, and vice versa. In each case, the resulting object is a different representation of the data in the original. This conversion is analogous to the encoding and decoding operations provided elsewhere in this package; however, the `convert` methods here avoid the creation of any textual representation of the data.

== Synopsis

Declared in `<baljsn_jsonconverter.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class JsonConverter;
----

== Description

The `bdlat` objects must meet the requirements of a sequence, choice, or array as defined in `bdlat_sequencefunctions`, `bdlat_choicefunctions`, and `bdlat_arrayfunctions` components, respectively.

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/baljsn/JsonConverter/allocator_type.adoc[`allocator_type`] 
| This `typedef` is an alias for `allocator_type`.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/baljsn/JsonConverter/2constructor-03.adoc[`JsonConverter`]         [.small]#[constructor]#
| Constructors
| xref:BloombergLP/baljsn/JsonConverter/convert-06a.adoc[`convert`] 
| `convert` overloads
| xref:BloombergLP/baljsn/JsonConverter/get_allocator.adoc[`get_allocator`] 
| Return the allocator used by this object to supply memory. Note that if no allocator was supplied at construction the default allocator in effect at construction is used.
| xref:BloombergLP/baljsn/JsonConverter/loggedMessages.adoc[`loggedMessages`] 
| Return a string containing any error, warning, or trace messages that were logged during the last call to the `convert` method. The log is reset each time `convert` is called.
|===


== Friends

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/baljsn/JsonConverter_ElementVisitor.adoc[BloombergLP::baljsn::JsonConverter_ElementVisitor]`
| This `class` implements a visitor for decoding elements within a sequence, choice, or array type. This is a component‐private class and should not be used outside of this component. Note that the operators provided in this `class` match the function signatures required of visitors decoding into elements of compatible types.
|===


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