Metadata and Repository API
[Public API]

Detailed Description

Functions for creating and looking up metadata descriptions in the R/3 DDIC.

Functions for traversing through metadata descriptions.

Modules

Metadata for structures/line-types

Functions for creating, reading and traversing through structure descriptions.

Metadata for function modules

Functions for creating, reading and traversing through function module descriptions.

Metadata for ABAP classes

Functions for creating, reading and traversing through ABAP class descriptions.

Classes

struct _RFC_TYPE_DESC_HANDLE

Handle to a cached metadata description of a structure or table type. More...

struct _RFC_FUNCTION_DESC_HANDLE

Handle to a cached metadata description of a function module. More...

struct _RFC_CLASS_DESC_HANDLE

Handle to a cached metadata description of a class. More...

struct _RFC_FIELD_DESC

Structure for reading (RfcGetFieldDescByIndex() or RfcGetFieldDescByName()) or defining (RfcAddTypeField()) the properties of a field in a structure/table. More...

struct _RFC_PARAMETER_DESC

Structure for reading (RfcGetParameterDescByIndex() or RfcGetParameterDescByName()) or defining (RfcAddParameter()) the properties of a parameter in a function module. More...

struct _RFC_EXCEPTION_DESC

Structure for reading (RfcGetExceptionDescByIndex() or RfcGetExceptionDescByName()) or defining (RfcAddException()) the properties of an exception key in a function module. More...

struct _RFC_CLASS_ATTRIBUTE_DESC

Structure for reading (RfcGetParameterDescByIndex() or RfcGetParameterDescByName()) or defining (RfcAddParameter()) the properties of a parameter in a function module. More...

struct _RFC_METADATA_QUERY_RESULT_ENTRY

Structure containing the error occurred during metadata query. More...

Enumerations

enum _RFC_DIRECTION { RFC_IMPORT = 0x01, RFC_EXPORT = 0x02, RFC_CHANGING = RFC_IMPORT | RFC_EXPORT, RFC_TABLES = 0x04 | RFC_CHANGING }

Used in RFC_PARAMETER_DESC::direction for specifying the direction of a function module parameter. More...

enum _RFC_CLASS_ATTRIBUTE_TYPE { RFC_CLASS_ATTRIBUTE_INSTANCE, RFC_CLASS_ATTRIBUTE_CLASS, RFC_CLASS_ATTRIBUTE_CONSTANT }

Determines the type of an ABAP Object attribute. More...

enum _RFC_METADATA_OBJ_TYPE { RFC_METADATA_FUNCTION, RFC_METADATA_TYPE, RFC_METADATA_CLASS }

RFC_METADATA_OBJ_TYPE is either function or type or class and is used in RfcGetMetadataQueryFailedEntry() and RfcGetMetadataQuerySucceededEntry(). More...

Functions

DECL_EXP
RFC_FUNCTION_DESC_HANDLE
SAP_API RfcGetFunctionDesc (RFC_CONNECTION_HANDLE rfcHandle, SAP_UC const *funcName, RFC_ERROR_INFO *errorInfo)

Returns the function description that is valid for the system to which rfcHandle points to.

DECL_EXP
RFC_FUNCTION_DESC_HANDLE
SAP_API RfcGetCachedFunctionDesc (SAP_UC const *repositoryID, SAP_UC const *funcName, RFC_ERROR_INFO *errorInfo)

Looks for a cached function description.

DECL_EXP RFC_RC SAP_API RfcAddFunctionDesc (SAP_UC const *repositoryID, RFC_FUNCTION_DESC_HANDLE funcDesc, RFC_ERROR_INFO *errorInfo)

Adds a function description to the cache for the specified R/3 System.

DECL_EXP RFC_RC SAP_API RfcRemoveFunctionDesc (SAP_UC const *repositoryID, SAP_UC const *functionName, RFC_ERROR_INFO *errorInfo)

Removes a function description from the cache for the specified R/3 System.

DECL_EXP RFC_TYPE_DESC_HANDLE
SAP_API RfcGetTypeDesc (RFC_CONNECTION_HANDLE rfcHandle, SAP_UC const *typeName, RFC_ERROR_INFO *errorInfo)

Returns the structure description that is valid for the system to which rfcHandle points to.

DECL_EXP RFC_TYPE_DESC_HANDLE
SAP_API RfcGetCachedTypeDesc (SAP_UC const *repositoryID, SAP_UC const *typeName, RFC_ERROR_INFO *errorInfo)

Looks for a cached structure/table description.

DECL_EXP RFC_RC SAP_API RfcAddTypeDesc (SAP_UC const *repositoryID, RFC_TYPE_DESC_HANDLE typeHandle, RFC_ERROR_INFO *errorInfo)

Adds a type description to the cache.

DECL_EXP RFC_RC SAP_API RfcRemoveTypeDesc (SAP_UC const *repositoryID, SAP_UC const *typeName, RFC_ERROR_INFO *errorInfo)

Removes a type description from the cache.

DECL_EXP RFC_CLASS_DESC_HANDLE
SAP_API RfcGetClassDesc (RFC_CONNECTION_HANDLE rfcHandle, SAP_UC const *className, RFC_ERROR_INFO *errorInfo)

Returns the class description that is valid for the system to which rfcHandle points to.

DECL_EXP RFC_CLASS_DESC_HANDLE
SAP_API RfcGetCachedClassDesc (SAP_UC const *repositoryID, SAP_UC const *className, RFC_ERROR_INFO *errorInfo)

Looks for a cached class description.

DECL_EXP RFC_RC SAP_API RfcAddClassDesc (SAP_UC const *repositoryID, RFC_CLASS_DESC_HANDLE classDesc, RFC_ERROR_INFO *errorInfo)

Adds a class description to the cache for the specified R/3 System.

DECL_EXP RFC_RC SAP_API RfcRemoveClassDesc (SAP_UC const *repositoryID, SAP_UC const *className, RFC_ERROR_INFO *errorInfo)

Removes a class description from the cache for the specified R/3 System.

DECL_EXP
RFC_METADATA_QUERY_RESULT_HANDLE
SAP_API RfcCreateMetadataQueryResult (RFC_ERROR_INFO *errorInfo)

Creates the metadata query result
Metadata query result contains the names of functions, types and classes queried successfully, or errors, if the query failed.

DECL_EXP RFC_RC SAP_API RfcDestroyMetadataQueryResult (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_ERROR_INFO *errorInfo)

Destroys the metadata query result
Releases all resources allocated by the metadata query result.

DECL_EXP RFC_RC SAP_API RfcDescribeMetadataQueryResult (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_METADATA_OBJ_TYPE type, unsigned *successful, unsigned *failed, RFC_ERROR_INFO *errorInfo)

Describes the metadata query result
Returns the number of succeeded and failed entries in the metadata query result.

DECL_EXP RFC_RC SAP_API RfcGetMetadataQueryFailedEntry (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_METADATA_OBJ_TYPE type, unsigned index, RFC_METADATA_QUERY_RESULT_ENTRY *entry, RFC_ERROR_INFO *errorInfo)

Returns the error entry from the metadata query result
Returns the object name and the error text, if an error occurred during the query.

DECL_EXP RFC_RC SAP_API RfcGetMetadataQuerySucceededEntry (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_METADATA_OBJ_TYPE type, unsigned index, RFC_ABAP_NAME succeedObj, RFC_ERROR_INFO *errorInfo)

Returns a succeeded entry from the metadata query result
Returns the object name queried successfully.

DECL_EXP RFC_RC SAP_API RfcMetadataBatchQuery (RFC_CONNECTION_HANDLE rfcHandle, const SAP_UC **functionNames, unsigned functionCount, const SAP_UC **typeNames, unsigned typeCount, const SAP_UC **classNames, unsigned classCount, RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_ERROR_INFO *errorInfo)

Queries the meta data for function, type and class lists.

Enumeration Type Documentation

enum _RFC_CLASS_ATTRIBUTE_TYPE

Determines the type of an ABAP Object attribute.

Enumerator:

RFC_CLASS_ATTRIBUTE_INSTANCE	Instance attribute (object member).
RFC_CLASS_ATTRIBUTE_CLASS	Class attribute (global).
RFC_CLASS_ATTRIBUTE_CONSTANT	A constant.

Definition at line 513 of file sapnwrfc.h.

enum _RFC_DIRECTION

Used in RFC_PARAMETER_DESC::direction for specifying the direction of a function module parameter.

Enumerator:

RFC_IMPORT	Import parameter. This corresponds to ABAP IMPORTING parameter.
RFC_EXPORT	Export parameter. This corresponds to ABAP EXPORTING parameter.
RFC_CHANGING	Import and export parameter. This corresponds to ABAP CHANGING parameter.
RFC_TABLES	Table parameter. This corresponds to ABAP TABLES parameter.

Definition at line 466 of file sapnwrfc.h.

enum _RFC_METADATA_OBJ_TYPE

RFC_METADATA_OBJ_TYPE is either function or type or class and is used in RfcGetMetadataQueryFailedEntry() and RfcGetMetadataQuerySucceededEntry().

Enumerator:

RFC_METADATA_FUNCTION
RFC_METADATA_TYPE
RFC_METADATA_CLASS

Definition at line 4236 of file sapnwrfc.h.

Function Documentation

DECL_EXP RFC_RC SAP_API RfcAddClassDesc	(	SAP_UC const *	repositoryID,
		RFC_CLASS_DESC_HANDLE	classDesc,
		RFC_ERROR_INFO *	errorInfo
	)

Adds a class description to the cache for the specified R/3 System.

This API should be used with care and is only for special scenarios, e.g. if you want to write an RFC server that offers/uses classes, which do not exist in the R/3 system's DDIC. If repositoryID is NULL, the description is added to the "default repository".

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, to whose cache you want to add the class description, or NULL for the default repository.
`[in]`	classDesc	The class description.
`[out]`	*errorInfo	Not much that can go wrong here.

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcAddFunctionDesc	(	SAP_UC const *	repositoryID,
		RFC_FUNCTION_DESC_HANDLE	funcDesc,
		RFC_ERROR_INFO *	errorInfo
	)

Adds a function description to the cache for the specified R/3 System.

This API should be used with care and is only for special scenarios, e.g. if you want to write an RFC server that offers function modules, which do not exist in the R/3 system's DDIC. If repositoryID is NULL, the description is added to the "default repository".

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, to whose cache you want to add the function description, or NULL for the default repository.
`[in]`	funcDesc	The function description.
`[out]`	*errorInfo	Not much that can go wrong here.

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcAddTypeDesc	(	SAP_UC const *	repositoryID,
		RFC_TYPE_DESC_HANDLE	typeHandle,
		RFC_ERROR_INFO *	errorInfo
	)

Adds a type description to the cache.

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, to whose cache you want to add the type description, or NULL for the default repository.
`[in]`	typeHandle	The type description.
`[out]`	*errorInfo	Not much that can go wrong here.

Returns:: RFC_RC

DECL_EXP RFC_METADATA_QUERY_RESULT_HANDLE SAP_API RfcCreateMetadataQueryResult ( RFC_ERROR_INFO * errorInfo )

Creates the metadata query result

Metadata query result contains the names of functions, types and classes queried successfully, or errors, if the query failed.

Parameters:

[out] *errorInfo More details in error case

Returns:: Handle to a metadata query result

DECL_EXP RFC_RC SAP_API RfcDescribeMetadataQueryResult	(	RFC_METADATA_QUERY_RESULT_HANDLE	handle,
		RFC_METADATA_OBJ_TYPE	type,
		unsigned *	successful,
		unsigned *	failed,
		RFC_ERROR_INFO *	errorInfo
	)

Describes the metadata query result

Returns the number of succeeded and failed entries in the metadata query result.

The entries' content can be read with RfcGetMetadataQueryFailedEntry() and RfcGetMetadataQuerySucceededEntry().

Parameters:

`[in]`	handle	Handle to a metadata query result
`[in]`	type	Type of the requested object
`[out]`	*successful	Number of metadata objects queried successfully
`[out]`	*failed	Number of metadata objects that could not be queried
`[out]`	*errorInfo	More details in error case

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcDestroyMetadataQueryResult	(	RFC_METADATA_QUERY_RESULT_HANDLE	handle,
		RFC_ERROR_INFO *	errorInfo
	)

Destroys the metadata query result

Releases all resources allocated by the metadata query result.

Parameters:

`[in]`	handle	Handle to a metadata query result
`[out]`	*errorInfo	More details in error case

Returns:: RFC_RC

DECL_EXP RFC_CLASS_DESC_HANDLE SAP_API RfcGetCachedClassDesc	(	SAP_UC const *	repositoryID,
		SAP_UC const *	className,
		RFC_ERROR_INFO *	errorInfo
	)

Looks for a cached class description.

This API should be used with care and is only for special scenarios, for example: 1. You know for sure, that a class description has already been cached via RfcGetClassDesc(), and don't want to open an extra rfcHandle that will never be used. In this case simply use the SAP System ID as the repositoryID. 2. You have created a hard-coded repository via RfcAddClassDesc(), which contains classes that do not exist in the backend's DDIC.

If repositoryID is NULL, the "default repository" is used.

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, for which this class description has been cached, or NULL in case you want to look for it in the default repository.
`[in]`	*className	Name of the class.
`[out]`	*errorInfo	Requested class name not in cache?

Returns:: The requested class description.

DECL_EXP RFC_FUNCTION_DESC_HANDLE SAP_API RfcGetCachedFunctionDesc	(	SAP_UC const *	repositoryID,
		SAP_UC const *	funcName,
		RFC_ERROR_INFO *	errorInfo
	)

Looks for a cached function description.

This API should be used with care and is only for special scenarios, for example: 1. You know for sure, that a function description has already been cached via RfcGetFunctionDesc(), and don't want to open an extra rfcHandle that will never be used. In this case simply use the SAP System ID as the repositoryID. 2. You have created a hard-coded repository via RfcAddFunctionDesc(), which contains function modules that do not exist in the backend's DDIC.

If repositoryID is NULL, the "default repository" is used.

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, for which this function module description has been cached, or NULL in case you want to look for it in the default repository.
`[in]`	*funcName	Name of the function module.
`[out]`	*errorInfo	Requested function name not in cache?

Returns:: The requested function description.

DECL_EXP RFC_TYPE_DESC_HANDLE SAP_API RfcGetCachedTypeDesc	(	SAP_UC const *	repositoryID,
		SAP_UC const *	typeName,
		RFC_ERROR_INFO *	errorInfo
	)

Looks for a cached structure/table description.

Similar to RfcGetTypeDesc(), but it only looks into the cache. Again it should almost never be necessary to get a metadata description of a single structure.

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, for which this type description has been cached, or NULL in case you want to look for it in the default repository.
`[in]`	*typeName	Name of the DDIC structure/table.
`[out]`	*errorInfo	Requested type name not in cache?

Returns:: The requested type description.

DECL_EXP RFC_CLASS_DESC_HANDLE SAP_API RfcGetClassDesc	(	RFC_CONNECTION_HANDLE	rfcHandle,
		SAP_UC const *	className,
		RFC_ERROR_INFO *	errorInfo
	)

Returns the class description that is valid for the system to which rfcHandle points to.

If the class description is already in the repository cache for that system ID, it will be returned immediately (from the cache), otherwise it will be looked up in the system's DDIC using the rfcHandle. The result from the DDIC lookup will then be placed into the cache for later use.

The RFC Runtime maintains a cache for every R/3 System ID, as the meta data could be different from R/3 release to R/3 release. This is the main API that should be used.

Parameters:

`[in]`	rfcHandle	Open client connection to the R/3 System, for which you need the class description.
`[in]`	*className	Name of the class to look up.
`[out]`	*errorInfo	More error details in case something goes wrong.

Returns:: The metadata description of the given function module.

DECL_EXP RFC_FUNCTION_DESC_HANDLE SAP_API RfcGetFunctionDesc	(	RFC_CONNECTION_HANDLE	rfcHandle,
		SAP_UC const *	funcName,
		RFC_ERROR_INFO *	errorInfo
	)

Returns the function description that is valid for the system to which rfcHandle points to.

If the function description is already in the repository cache for that system ID, it will be returned immediately (from the cache), otherwise it will be looked up in the system's DDIC using the rfcHandle. The result from the DDIC lookup will then be placed into the cache for later use.

The RFC Runtime maintains a cache for every R/3 System ID, as the meta data could be different from R/3 release to R/3 release. This is the main API that should be used.

Parameters:

`[in]`	rfcHandle	Open client connection to the R/3 System, for which you need the function module description.
`[in]`	*funcName	Name of the function module to look up.
`[out]`	*errorInfo	More error details in case something goes wrong.

Returns:: The metadata description of the given function module.

DECL_EXP RFC_RC SAP_API RfcGetMetadataQueryFailedEntry	(	RFC_METADATA_QUERY_RESULT_HANDLE	handle,
		RFC_METADATA_OBJ_TYPE	type,
		unsigned	index,
		RFC_METADATA_QUERY_RESULT_ENTRY *	entry,
		RFC_ERROR_INFO *	errorInfo
	)

Returns the error entry from the metadata query result

Returns the object name and the error text, if an error occurred during the query.

Parameters:

`[in]`	handle	Handle to a metadata query result
`[in]`	type	Type of the requested object
`[in]`	index	Index of the requested object
`[in,out]`	*entry	Pointer to the allocated structure to store the name of the metadata object and the error text
`[out]`	*errorInfo	More details in error case

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcGetMetadataQuerySucceededEntry	(	RFC_METADATA_QUERY_RESULT_HANDLE	handle,
		RFC_METADATA_OBJ_TYPE	type,
		unsigned	index,
		RFC_ABAP_NAME	succeedObj,
		RFC_ERROR_INFO *	errorInfo
	)

Returns a succeeded entry from the metadata query result

Returns the object name queried successfully.

Parameters:

`[in]`	handle	Handle to a metadata query result
`[in]`	type	Type of the requested object
`[in]`	index	Index of the requested object
`[in,out]`	*succeedObj	Pointer to the allocated buffer to store the name of the metadata object
`[out]`	*errorInfo	More details in error case

Returns:: RFC_RC

DECL_EXP RFC_TYPE_DESC_HANDLE SAP_API RfcGetTypeDesc	(	RFC_CONNECTION_HANDLE	rfcHandle,
		SAP_UC const *	typeName,
		RFC_ERROR_INFO *	errorInfo
	)

Returns the structure description that is valid for the system to which rfcHandle points to.

If the structure description is already in the repository cache for that system ID, it will be returned immediately (from the cache), otherwise it will be looked up in the system's DDIC using the rfcHandle. The result from the DDIC lookup will then be placed into the cache for later use.

The RFC Runtime maintains a cache for every R/3 System ID, as the meta data could be different from R/3 release to R/3 release.

Note:: Normally it should not be necessary to lookup separate structure descriptions. They are already looked up as part of the function module, in which they are used.

Parameters:

`[in]`	rfcHandle	Open client connection to the R/3 System, for which you need the structure description.
`[in]`	*typeName	Name of a DDIC structure or table.
`[out]`	*errorInfo	More error details in case something goes wrong.

Returns:: The metadata description of the given structure/table.

DECL_EXP RFC_RC SAP_API RfcMetadataBatchQuery	(	RFC_CONNECTION_HANDLE	rfcHandle,
		const SAP_UC **	functionNames,
		unsigned	functionCount,
		const SAP_UC **	typeNames,
		unsigned	typeCount,
		const SAP_UC **	classNames,
		unsigned	classCount,
		RFC_METADATA_QUERY_RESULT_HANDLE	handle,
		RFC_ERROR_INFO *	errorInfo
	)

Queries the meta data for function, type and class lists.

Queries the meta data for function, type and class lists. All meta data is fetched using one roundtrip, the result is cached in the repository cache.

Parameters:

`[in]`	rfcHandle	Open client connection to the R/3 System, for which you need the function module, type or class descriptions.
`[in]`	*functionNames	Names of the function modules to look up.
`[in]`	functionCount	Length of the function name list
`[in]`	*typeNames	Names of the types to look up.
`[in]`	typeCount	Length of the type name list
`[in]`	*classNames	Names of the classes to look up.
`[in]`	classCount	Length of the class name list
`[in]`	handle	Query result, may be null.
`[out]`	*errorInfo	More error details in case something goes wrong.

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcRemoveClassDesc	(	SAP_UC const *	repositoryID,
		SAP_UC const *	className,
		RFC_ERROR_INFO *	errorInfo
	)

Removes a class description from the cache for the specified R/3 System.

If repositoryID is NULL, the description is added to the "default repository".

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, from whose cache you want to remove the class description, or NULL for the default repository.
`[in]`	*className	The name of the ABAP class, whose description you want to remove.
`[out]`	*errorInfo	Not much that can go wrong here.

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcRemoveFunctionDesc	(	SAP_UC const *	repositoryID,
		SAP_UC const *	functionName,
		RFC_ERROR_INFO *	errorInfo
	)

Removes a function description from the cache for the specified R/3 System.

This API can be used, e.g. if the signature (imports, exports, etc.) of a function module has been changed in the backend, while the external RFC program is still running. If the RFC library continues using the old cached metadata description, garbage values (if fields have been deleted from the function module) or missing values (if new fields have been added to the function module) will result. If repositoryID is NULL, the description is removed from the "default repository".

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, to whose cache you want to add the function description, or NULL for the default repository.
`[in]`	*functionName	The name of the function module, whose description is to be removed from the cache.
`[out]`	*errorInfo	Not much that can go wrong here.

Returns:: RFC_RC

DECL_EXP RFC_RC SAP_API RfcRemoveTypeDesc	(	SAP_UC const *	repositoryID,
		SAP_UC const *	typeName,
		RFC_ERROR_INFO *	errorInfo
	)

Removes a type description from the cache.

Parameters:

`[in]`	*repositoryID	System ID of R/3 System, from whose cache you want to remove the type description, or NULL for the default repository.
`[in]`	*typeName	The name of the type, whose description is to be removed from the cache.
`[out]`	*errorInfo	Not much that can go wrong here.

Returns:: RFC_RC


Modules
	Metadata for structures/line-types
	Functions for creating, reading and traversing through structure descriptions.
	Metadata for function modules
	Functions for creating, reading and traversing through function module descriptions.
	Metadata for ABAP classes
	Functions for creating, reading and traversing through ABAP class descriptions.
Classes
struct	_RFC_TYPE_DESC_HANDLE
	Handle to a cached metadata description of a structure or table type. More...
struct	_RFC_FUNCTION_DESC_HANDLE
	Handle to a cached metadata description of a function module. More...
struct	_RFC_CLASS_DESC_HANDLE
	Handle to a cached metadata description of a class. More...
struct	_RFC_FIELD_DESC
	Structure for reading (RfcGetFieldDescByIndex() or RfcGetFieldDescByName()) or defining (RfcAddTypeField()) the properties of a field in a structure/table. More...
struct	_RFC_PARAMETER_DESC
	Structure for reading (RfcGetParameterDescByIndex() or RfcGetParameterDescByName()) or defining (RfcAddParameter()) the properties of a parameter in a function module. More...
struct	_RFC_EXCEPTION_DESC
	Structure for reading (RfcGetExceptionDescByIndex() or RfcGetExceptionDescByName()) or defining (RfcAddException()) the properties of an exception key in a function module. More...
struct	_RFC_CLASS_ATTRIBUTE_DESC
	Structure for reading (RfcGetParameterDescByIndex() or RfcGetParameterDescByName()) or defining (RfcAddParameter()) the properties of a parameter in a function module. More...
struct	_RFC_METADATA_QUERY_RESULT_ENTRY
	Structure containing the error occurred during metadata query. More...
Enumerations
enum	_RFC_DIRECTION { RFC_IMPORT = 0x01, RFC_EXPORT = 0x02, RFC_CHANGING = RFC_IMPORT \| RFC_EXPORT, RFC_TABLES = 0x04 \| RFC_CHANGING }
	Used in RFC_PARAMETER_DESC::direction for specifying the direction of a function module parameter. More...
enum	_RFC_CLASS_ATTRIBUTE_TYPE { RFC_CLASS_ATTRIBUTE_INSTANCE, RFC_CLASS_ATTRIBUTE_CLASS, RFC_CLASS_ATTRIBUTE_CONSTANT }
	Determines the type of an ABAP Object attribute. More...
enum	_RFC_METADATA_OBJ_TYPE { RFC_METADATA_FUNCTION, RFC_METADATA_TYPE, RFC_METADATA_CLASS }
	RFC_METADATA_OBJ_TYPE is either function or type or class and is used in RfcGetMetadataQueryFailedEntry() and RfcGetMetadataQuerySucceededEntry(). More...
Functions
DECL_EXP RFC_FUNCTION_DESC_HANDLE SAP_API	RfcGetFunctionDesc (RFC_CONNECTION_HANDLE rfcHandle, SAP_UC const funcName, RFC_ERROR_INFO errorInfo)
	Returns the function description that is valid for the system to which rfcHandle points to.
DECL_EXP RFC_FUNCTION_DESC_HANDLE SAP_API	RfcGetCachedFunctionDesc (SAP_UC const repositoryID, SAP_UC const funcName, RFC_ERROR_INFO *errorInfo)
	Looks for a cached function description.
DECL_EXP RFC_RC SAP_API	RfcAddFunctionDesc (SAP_UC const repositoryID, RFC_FUNCTION_DESC_HANDLE funcDesc, RFC_ERROR_INFO errorInfo)
	Adds a function description to the cache for the specified R/3 System.
DECL_EXP RFC_RC SAP_API	RfcRemoveFunctionDesc (SAP_UC const repositoryID, SAP_UC const functionName, RFC_ERROR_INFO *errorInfo)
	Removes a function description from the cache for the specified R/3 System.
DECL_EXP RFC_TYPE_DESC_HANDLE SAP_API	RfcGetTypeDesc (RFC_CONNECTION_HANDLE rfcHandle, SAP_UC const typeName, RFC_ERROR_INFO errorInfo)
	Returns the structure description that is valid for the system to which rfcHandle points to.
DECL_EXP RFC_TYPE_DESC_HANDLE SAP_API	RfcGetCachedTypeDesc (SAP_UC const repositoryID, SAP_UC const typeName, RFC_ERROR_INFO *errorInfo)
	Looks for a cached structure/table description.
DECL_EXP RFC_RC SAP_API	RfcAddTypeDesc (SAP_UC const repositoryID, RFC_TYPE_DESC_HANDLE typeHandle, RFC_ERROR_INFO errorInfo)
	Adds a type description to the cache.
DECL_EXP RFC_RC SAP_API	RfcRemoveTypeDesc (SAP_UC const repositoryID, SAP_UC const typeName, RFC_ERROR_INFO *errorInfo)
	Removes a type description from the cache.
DECL_EXP RFC_CLASS_DESC_HANDLE SAP_API	RfcGetClassDesc (RFC_CONNECTION_HANDLE rfcHandle, SAP_UC const className, RFC_ERROR_INFO errorInfo)
	Returns the class description that is valid for the system to which rfcHandle points to.
DECL_EXP RFC_CLASS_DESC_HANDLE SAP_API	RfcGetCachedClassDesc (SAP_UC const repositoryID, SAP_UC const className, RFC_ERROR_INFO *errorInfo)
	Looks for a cached class description.
DECL_EXP RFC_RC SAP_API	RfcAddClassDesc (SAP_UC const repositoryID, RFC_CLASS_DESC_HANDLE classDesc, RFC_ERROR_INFO errorInfo)
	Adds a class description to the cache for the specified R/3 System.
DECL_EXP RFC_RC SAP_API	RfcRemoveClassDesc (SAP_UC const repositoryID, SAP_UC const className, RFC_ERROR_INFO *errorInfo)
	Removes a class description from the cache for the specified R/3 System.
DECL_EXP RFC_METADATA_QUERY_RESULT_HANDLE SAP_API	RfcCreateMetadataQueryResult (RFC_ERROR_INFO *errorInfo)
	Creates the metadata query result Metadata query result contains the names of functions, types and classes queried successfully, or errors, if the query failed.
DECL_EXP RFC_RC SAP_API	RfcDestroyMetadataQueryResult (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_ERROR_INFO *errorInfo)
	Destroys the metadata query result Releases all resources allocated by the metadata query result.
DECL_EXP RFC_RC SAP_API	RfcDescribeMetadataQueryResult (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_METADATA_OBJ_TYPE type, unsigned successful, unsigned failed, RFC_ERROR_INFO *errorInfo)
	Describes the metadata query result Returns the number of succeeded and failed entries in the metadata query result.
DECL_EXP RFC_RC SAP_API	RfcGetMetadataQueryFailedEntry (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_METADATA_OBJ_TYPE type, unsigned index, RFC_METADATA_QUERY_RESULT_ENTRY entry, RFC_ERROR_INFO errorInfo)
	Returns the error entry from the metadata query result Returns the object name and the error text, if an error occurred during the query.
DECL_EXP RFC_RC SAP_API	RfcGetMetadataQuerySucceededEntry (RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_METADATA_OBJ_TYPE type, unsigned index, RFC_ABAP_NAME succeedObj, RFC_ERROR_INFO *errorInfo)
	Returns a succeeded entry from the metadata query result Returns the object name queried successfully.
DECL_EXP RFC_RC SAP_API	RfcMetadataBatchQuery (RFC_CONNECTION_HANDLE rfcHandle, const SAP_UC functionNames, unsigned functionCount, const SAP_UC typeNames, unsigned typeCount, const SAP_UC *classNames, unsigned classCount, RFC_METADATA_QUERY_RESULT_HANDLE handle, RFC_ERROR_INFO errorInfo)
	Queries the meta data for function, type and class lists.

Metadata and Repository API [Public API]

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Metadata and Repository API
[Public API]