FJsonObjectArrayUpdater< ElementType, KeyType > Struct Template Reference

#include <JsonObjectArrayUpdater.h>

Public Member Functions
	DECLARE_DELEGATE_RetVal_OneParam (KeyType, FGetElementKey, const ElementType &)
	DECLARE_DELEGATE_RetVal_TwoParams (bool, FTryGetJsonObjectKey, const FJsonObject &, KeyType &)
	DECLARE_DELEGATE_TwoParams (FUpdateJsonObject, const ElementType &, FJsonObject &)
	DECLARE_DELEGATE_OneParam (FSortArray, TArray< TSharedPtr< FJsonValue > > &)

Static Public Member Functions
static void	Execute (FJsonObject &JsonObject, const FString &ArrayName, const TArray< ElementType > &SourceArray, FGetElementKey GetElementKey, FTryGetJsonObjectKey TryGetJsonObjectKey, FUpdateJsonObject UpdateJsonObject, FSortArray SortJsonArray=FSortArray())

Detailed Description

template<typename ElementType, typename KeyType>
struct FJsonObjectArrayUpdater< ElementType, KeyType >

Utility to update an array of json objects from an array of elements (of arbitrary type). Elements in the source array and the destination json object array are matched based on an arbitrary key (provided by the FGetElementKey and FTryGetJsonObjectKey delegates respectively). Existing elements get "updated" via the FUpdateJsonObject delegate. The update scheme is entirely customizable; for example, it can be non-destructive and leave some json fields unchanged. Elements from the source array that are not in the json array (based on the "key") are added to it. Elements that are not present in the source array (based on the "key") are removed from the json array. If the source array is empty the json array field is removed.

Member Function Documentation

DECLARE_DELEGATE_OneParam()

template<typename ElementType , typename KeyType >

FJsonObjectArrayUpdater< ElementType, KeyType >::DECLARE_DELEGATE_OneParam	(	FSortArray	,
		TArray< TSharedPtr< FJsonValue > > &
	)

DECLARE_DELEGATE_RetVal_OneParam()

template<typename ElementType , typename KeyType >

FJsonObjectArrayUpdater< ElementType, KeyType >::DECLARE_DELEGATE_RetVal_OneParam	(	KeyType	,
		FGetElementKey	,
		const ElementType &
	)

DECLARE_DELEGATE_RetVal_TwoParams()

template<typename ElementType , typename KeyType >

FJsonObjectArrayUpdater< ElementType, KeyType >::DECLARE_DELEGATE_RetVal_TwoParams	(	bool	,
		FTryGetJsonObjectKey	,
		const FJsonObject &	,
		KeyType &
	)

DECLARE_DELEGATE_TwoParams()

template<typename ElementType , typename KeyType >

FJsonObjectArrayUpdater< ElementType, KeyType >::DECLARE_DELEGATE_TwoParams	(	FUpdateJsonObject	,
		const ElementType &	,
		FJsonObject &
	)

Execute()

template<typename ElementType , typename KeyType >

static void FJsonObjectArrayUpdater< ElementType, KeyType >::Execute ( FJsonObject &  JsonObject, const FString &  ArrayName, const TArray< ElementType > &  SourceArray, FGetElementKey  GetElementKey, FTryGetJsonObjectKey  TryGetJsonObjectKey, FUpdateJsonObject  UpdateJsonObject, FSortArray  SortJsonArray = FSortArray()  )

inlinestatic

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The documentation for this struct was generated from the following file:

• Engine/Source/Runtime/Json/Public/JsonUtils/JsonObjectArrayUpdater.h