UaServerRead

Functions
OpcUa_StatusCode	UaServer_ReadComplete (UaServer_ProviderReadContext *a_pReadContext)
	Called by the provider to signal that he finished handling the Read call. More...
OpcUa_StatusCode	UaServer_ValidateReadParams (OpcUa_BaseNode *a_pNode, UaServer_ProviderReadContext *a_pReadContext, OpcUa_Int32 a_iNodeIndex, OpcUa_UInt32 *a_pNoOfNumericRanges, UaServer_NumericRange *a_pNumericRanges)
	Check if all read parameters are valid and match the given node. More...
OpcUa_StatusCode	UaServer_ReadNodeInternal (OpcUa_BaseNode *a_pNode, UaServer_ProviderReadContext *a_pReadContext, OpcUa_Int32 a_iNodeIndex, OpcUa_UInt32 *a_pNoOfNumericRanges, UaServer_NumericRange *a_pNumericRanges)
	Read the given node. More...
OpcUa_StatusCode	UaServer_ReadInternal (OpcUa_BaseNode *a_pNode, UaServer_ProviderReadContext *a_pReadContext, OpcUa_Int32 a_iNodeIndex)
	Called by a provider to let the SDK handle the read call. More...

Detailed Description

Function Documentation

OpcUa_StatusCode UaServer_ReadComplete

(

UaServer_ProviderReadContext *

a_pReadContext

)

Called by the provider to signal that he finished handling the Read call.

Note

This function is thread-safe.

Parameters

a_pReadContext

The processed ReadContext.

Returns

Always returns OpcUa_Good.

OpcUa_StatusCode UaServer_ReadInternal	(	OpcUa_BaseNode *	a_pNode,
		UaServer_ProviderReadContext *	a_pReadContext,
		OpcUa_Int32	a_iNodeIndex
	)

Called by a provider to let the SDK handle the read call.

Parameters

[in]	a_pNode	The node to read
[in]	a_pReadContext	The associated read context.
[in]	a_iNodeIndex	The index of the node to read from the list of the request.

Returns

the OPC UA Status code.

OpcUa_StatusCode UaServer_ReadNodeInternal	(	OpcUa_BaseNode *	a_pNode,
		UaServer_ProviderReadContext *	a_pReadContext,
		OpcUa_Int32	a_iNodeIndex,
		OpcUa_UInt32 *	a_pNoOfNumericRanges,
		UaServer_NumericRange *	a_pNumericRanges
	)

Read the given node.

Use this only after verifying the read parameters using UaServer_ValidateReadParams.

Parameters

[in]	a_pNode	The node to read.
[in]	a_pReadContext	The associated read context.
[in]	a_iNodeIndex	The index of the node to read from the list of the request.
[in]	a_pNoOfNumericRanges	The number of numeric ranges in a_pNumericRanges.
[in]	a_pNumericRanges	Array of numeric range representing the index range.

Returns

the OPC UA Status code.

OpcUa_StatusCode UaServer_ValidateReadParams	(	OpcUa_BaseNode *	a_pNode,
		UaServer_ProviderReadContext *	a_pReadContext,
		OpcUa_Int32	a_iNodeIndex,
		OpcUa_UInt32 *	a_pNoOfNumericRanges,
		UaServer_NumericRange *	a_pNumericRanges
	)

Check if all read parameters are valid and match the given node.

Can be used to only validate the read parameters without accessing the OpcUa_BaseNode's value.

Parameters

[in]	a_pNode	The node to read.
[in]	a_pReadContext	The associated read context.
[in]	a_iNodeIndex	The index of the node to read from the list of the request.
[in,out]	a_pNoOfNumericRanges	The size of a_pNumericRanges. Will contain the number of numeric ranges on return.
[in]	a_pNumericRanges	Array of numeric range to store the index range in.

Returns

the OPC UA Status code.