This class encapsulates data structures and operations for managing data base interaction in the framework of the DICOM basic worklist management service. More...

Public Member Functions
	WlmFileSystemInteractionManager ()
	default constructor.

	~WlmFileSystemInteractionManager ()
	destructor

void	SetEnableRejectionOfIncompleteWlFiles (OFBool value)
	Set value in member variable. More...

OFCondition	ConnectToFileSystem (const OFString &dfPathv)
	Connects to the worklist file system database. More...

OFCondition	DisconnectFromFileSystem ()
	Disconnects from the worklist file system database. More...

OFBool	IsCalledApplicationEntityTitleSupported (const OFString &calledApplicationEntityTitlev)
	Checks if the given called application entity title is supported. More...

size_t	DetermineMatchingRecords (DcmDataset *searchMask)
	This function determines the records from the Worklist files that match the given search mask and returns the number of matching records. More...

void	MatchWorklistFile (DcmDataset &searchMask, const OFpath &worklistFile)
	Determine whether a Worklist file matches the search mask. More...

unsigned long	GetNumberOfSequenceItemsForMatchingRecord (DcmTagKey sequenceTag, WlmSuperiorSequenceInfoType *superiorSequenceArray, unsigned long numOfSuperiorSequences, unsigned long idx)
	For the matching record that is identified through idx, this function returns the number of items that are contained in the sequence element that is referred to by sequenceTag. More...

void	GetAttributeValueForMatchingRecord (DcmTagKey tag, WlmSuperiorSequenceInfoType superiorSequenceArray, unsigned long numOfSuperiorSequences, unsigned long idx, char &value)
	This function determines an attribute value of a matching record and returns this value in a newly created string to the caller. More...

void	ClearMatchingRecords ()
	This function frees the memory which was occupied by matchingRecords. More...

Protected Member Functions
OFdirectory_iterator &	FindNextWorklistFile (OFdirectory_iterator &it)
	Increment the given directory iterator until it refers to a worklist file (or past-the-end). More...

OFBool	DatasetIsComplete (DcmDataset *dataset)
	This function checks if the given dataset (which represents the information from a worklist file) contains all necessary return type 1 information. More...

OFBool	ReferencedStudyOrPatientSequenceIsAbsentOrExistentButNonEmptyAndIncomplete (DcmTagKey sequenceTagKey, DcmItem *dset)
	This function checks if the specified sequence attribute is absent or existent but non-empty and incomplete in the given dataset. More...

OFBool	DescriptionAndCodeSequenceAttributesAreIncomplete (DcmTagKey descriptionTagKey, DcmTagKey codeSequenceTagKey, DcmItem *dset)
	This method ensures that either code or description is set to a non-empty value, and at the same time none of the attributes is present with a zero-length value. More...

OFBool	AttributeIsAbsentOrEmpty (DcmTagKey elemTagKey, DcmItem *dset)
	This function checks if the specified attribute is absent or contains an empty value in the given dataset. More...

OFBool	MatchSequences (DcmSequenceOfItems &candidate, DcmSequenceOfItems &query, const MatchingKeys &matchingKeys)
	This function returns OFTrue, if the matching key attribute values in the one of the items of the candidate sequence match the matching key attribute values in at least one of the items of the query sequence. More...

OFBool	IsUniversalMatch (DcmSequenceOfItems &query, const MatchingKeys &matchingKeys, const OFBool normalize=OFTrue, const OFBool normalizeWildCards=OFTrue)
	Determine if a sequence is an universal match. More...

OFBool	DatasetMatchesSearchMask (DcmItem &dataset, DcmItem &searchMask, const MatchingKeys &matchingKeys)
	This function returns OFTrue, if the matching key attribute values in the dataset match the matching key attribute values in the search mask. More...

Protected Attributes
OFString	dfPath
	path to database files

OFBool	enableRejectionOfIncompleteWlFiles
	indicates if wl-files which are lacking return type 1 attributes or information in such attributes shall be rejected or not

OFString	calledApplicationEntityTitle
	called AE title

OFVector< OFshared_ptr< DcmDataset > >	matchingRecords
	matching records

Private Member Functions
	WlmFileSystemInteractionManager (const WlmFileSystemInteractionManager &old)
	Privately defined copy constructor. More...

WlmFileSystemInteractionManager &	operator= (const WlmFileSystemInteractionManager &obj)
	Privately defined assignment operator. More...

Detailed Description

This class encapsulates data structures and operations for managing data base interaction in the framework of the DICOM basic worklist management service.

Constructor & Destructor Documentation

◆ WlmFileSystemInteractionManager()

WlmFileSystemInteractionManager::WlmFileSystemInteractionManager ( const WlmFileSystemInteractionManager & old )

private

Privately defined copy constructor.

Parameters

old	Object which shall be copied.

Member Function Documentation

◆ AttributeIsAbsentOrEmpty()

OFBool WlmFileSystemInteractionManager::AttributeIsAbsentOrEmpty	(	DcmTagKey	elemTagKey,
		DcmItem *	dset
	)

protected

This function checks if the specified attribute is absent or contains an empty value in the given dataset.

Parameters

elemTagKey	The attribute which shall be checked.
dset	The dataset in which the attribute is contained.

Returns: OFTrue in case the attribute is absent or contains an empty value, OFFalse otherwise.

◆ ClearMatchingRecords()

void WlmFileSystemInteractionManager::ClearMatchingRecords ( )

This function frees the memory which was occupied by matchingRecords.

It shall be called when the matching records are no longer needed.

◆ ConnectToFileSystem()

OFCondition WlmFileSystemInteractionManager::ConnectToFileSystem ( const OFString & dfPathv )

Connects to the worklist file system database.

Parameters

dfPathv Path to worklist file system database.

Returns: Indicates if the connection could be established or not.

◆ DatasetIsComplete()

OFBool WlmFileSystemInteractionManager::DatasetIsComplete ( DcmDataset * dataset )

protected

This function checks if the given dataset (which represents the information from a worklist file) contains all necessary return type 1 information.

According to the DICOM standard part 4 annex K, the following attributes are type 1 attributes in C-Find RSP messages: Attribute Tag Return Key Type SpecificCharacterSet (0008,0005) 1C (will be checked in WlmDataSourceFileSystem::StartFindRequest(...); this attribute does not have to be checked here) ScheduledProcedureStepSequence (0040,0100) 1

ScheduledStationAETitle (0040,0001) 1 ScheduledProcedureStepStartDate (0040,0002) 1 ScheduledProcedureStepStartTime (0040,0003) 1 Modality (0008,0060) 1 ScheduledProcedureStepDescription (0040,0007) 1C (The ScheduledProcedureStepDescription (0040,0007) or the ScheduledProtocolCodeSequence (0040,0008) or both shall be supported by the SCP; we actually support both, so we have to check if at least one of the two attributes contains valid information.) ScheduledProtocolCodeSequence (0040,0008) 1C (see abobve)

CodeValue (0008,0100) 1 CodingSchemeDesignator (0008,0102) 1

ScheduledProcedureStepID (0040,0009) 1

RequestedProcedureID (0040,1001) 1 RequestedProcedureDescription (0032,1060) 1C (The RequestedProcedureDescription (0032,1060) or the RequestedProcedureCodeSequence (0032,1064) or both shall be supported by the SCP; we actually support both, so we have to check if at least one of the two attributes contains valid information.) RequestedProcedureCodeSequence (0032,1064) 1C (see abobve)

CodeValue (0008,0100) 1 CodingSchemeDesignator (0008,0102) 1

StudyInstanceUID (0020,000D) 1 ReferencedStudySequence (0008,1110) 2

ReferencedSOPClassUID (0008,1150) 1C (Required if a sequence item is present) ReferencedSOPInstanceUID (0008,1155) 1C (Required if a sequence item is present)

ReferencedPatientSequence (0008,1120) 2

ReferencedSOPClassUID (0008,1150) 1C (Required if a sequence item is present) ReferencedSOPInstanceUID (0008,1155) 1C (Required if a sequence item is present)

PatientName (0010,0010) 1 PatientID (0010,0020) 1

Parameters

dataset - [in] The dataset of the worklist file which is currently examined.

Returns: OFTrue in case the given dataset contains all necessary return type 1 information, OFFalse otherwise.

◆ DatasetMatchesSearchMask()

OFBool WlmFileSystemInteractionManager::DatasetMatchesSearchMask	(	DcmItem &	dataset,
		DcmItem &	searchMask,
		const MatchingKeys &	matchingKeys
	)

protected

This function returns OFTrue, if the matching key attribute values in the dataset match the matching key attribute values in the search mask.

Parameters

dataset	The dataset which shall be checked.
searchMask	The search mask.
matchingKeys	The matching keys to regard.

Returns: OFTrue in case the dataset matches the search mask in the matching key attribute values, OFFalse otherwise.

◆ DescriptionAndCodeSequenceAttributesAreIncomplete()

OFBool WlmFileSystemInteractionManager::DescriptionAndCodeSequenceAttributesAreIncomplete	(	DcmTagKey	descriptionTagKey,
		DcmTagKey	codeSequenceTagKey,
		DcmItem *	dset
	)

protected

This method ensures that either code or description is set to a non-empty value, and at the same time none of the attributes is present with a zero-length value.

If one of these requirements are not met, then OFTrue is returned, otherwise OFFalse.

Parameters

descriptionTagKey	The description attribute which shall be checked.
codeSequenceTagKey	The codeSequence attribute which shall be checked.
dset	The dataset in which the attributes are contained.

Returns: OFFalse (i.e. no error regarding the standard) in case at least one of both attributes has a non-empty, valid value, and none is set to an empty value. OFTrue otherwise.

◆ DetermineMatchingRecords()

size_t WlmFileSystemInteractionManager::DetermineMatchingRecords ( DcmDataset * searchMask )

This function determines the records from the Worklist files that match the given search mask and returns the number of matching records.

Also, this function will store the matching records inside the member variable matchingRecords.

Parameters

searchMask A pointer to the search mask.

Returns: The number of matching records.

◆ DisconnectFromFileSystem()

OFCondition WlmFileSystemInteractionManager::DisconnectFromFileSystem ( )

Disconnects from the worklist file system database.

Returns: Indicates if the connection was disconnected successfully.

◆ FindNextWorklistFile()

OFdirectory_iterator& WlmFileSystemInteractionManager::FindNextWorklistFile ( OFdirectory_iterator & it )

protected

Increment the given directory iterator until it refers to a worklist file (or past-the-end).

Parameters

it	A reference to an OFdirectory_iterator.

◆ GetAttributeValueForMatchingRecord()

void WlmFileSystemInteractionManager::GetAttributeValueForMatchingRecord	(	DcmTagKey	tag,
		WlmSuperiorSequenceInfoType *	superiorSequenceArray,
		unsigned long	numOfSuperiorSequences,
		unsigned long	idx,
		char *&	value
	)

This function determines an attribute value of a matching record and returns this value in a newly created string to the caller.

Parameters

tag	Attribute tag. Specifies which attribute's value shall be returned.
superiorSequenceArray	Array which contains information about superior sequence elements the given element is contained in.
numOfSuperiorSequences	The number of elements in the above array.
idx	Identifies the record from which the attribute value shall be retrieved.
value	Pointer to a newly created string that contains the requested value. If value was not found an emtpy string will be returned.

◆ GetNumberOfSequenceItemsForMatchingRecord()

unsigned long WlmFileSystemInteractionManager::GetNumberOfSequenceItemsForMatchingRecord	(	DcmTagKey	sequenceTag,
		WlmSuperiorSequenceInfoType *	superiorSequenceArray,
		unsigned long	numOfSuperiorSequences,
		unsigned long	idx
	)

For the matching record that is identified through idx, this function returns the number of items that are contained in the sequence element that is referred to by sequenceTag.

In case this sequence element is itself contained in a certain item of another superior sequence, superiorSequenceArray contains information about where to find the correct sequence element.

Parameters

sequenceTag	The tag of the sequence element for which the number of items shall be determined.
superiorSequenceArray	Array which contains information about superior sequence elements the given sequence element is contained in.
numOfSuperiorSequences	The number of elements in the above array.
idx	Identifies the record from which the number of sequence items shall be determined.

Returns: The number of items that are contained in the sequence element that is referred to by sequenceTag and that can be found in sequence items which are specified in superiorSequenceArray.

◆ IsCalledApplicationEntityTitleSupported()

OFBool WlmFileSystemInteractionManager::IsCalledApplicationEntityTitleSupported ( const OFString & calledApplicationEntityTitlev )

Checks if the given called application entity title is supported.

If this is the case, OFTrue will be returned, else OFFalse.

Parameters

calledApplicationEntityTitlev The application entity title which shall be checked for support. Valid pointer expected.

Returns: OFTrue, if the called application entity title is supported, OFFalse, if the called application entity title is not supported or it is not given.

◆ IsUniversalMatch()

OFBool WlmFileSystemInteractionManager::IsUniversalMatch	(	DcmSequenceOfItems &	query,
		const MatchingKeys &	matchingKeys,
		const OFBool	normalize = `OFTrue`,
		const OFBool	normalizeWildCards = `OFTrue`
	)

protected

Determine if a sequence is an universal match.

Parameters

query	The query sequence.
matchingKeys	The matching keys to regard.
normalize	Normalize each attribute value before the check. Defaults to OFTrue, which means the value will be normalized as appropriate for the given VR, e.g. ignoring spaces used as padding.
normalizeWildCards	Whether to interpret a query only consisting of wild cards as an universal match. Defaults to OFTrue, which means wild cards will be normalized if an attribute's VR supports it and it is allowed for the attribute (as defined by the matchingKeys argument). Set to OFFalse to force strict interpretation instead.

Returns: OFTrue if the sequence has no items or if all attributes in its item can be considered an universal match. Returns OFFalse otherwise.

◆ MatchSequences()

OFBool WlmFileSystemInteractionManager::MatchSequences	(	DcmSequenceOfItems &	candidate,
		DcmSequenceOfItems &	query,
		const MatchingKeys &	matchingKeys
	)

protected

This function returns OFTrue, if the matching key attribute values in the one of the items of the candidate sequence match the matching key attribute values in at least one of the items of the query sequence.

Parameters

candidate	The candidate sequence.
query	The query sequence.
matchingKeys	The matching keys to regard.

Returns: OFTrue in case at least one item matches, OFFalse otherwise.

◆ MatchWorklistFile()

void WlmFileSystemInteractionManager::MatchWorklistFile	(	DcmDataset &	searchMask,
		const OFpath &	worklistFile
	)

Determine whether a Worklist file matches the search mask.

Parameters

searchMask	A reference to the search mask.
worklistFile	An OFpath (hopefully) referring to a Worklist file.

This method will attempt to load the Worklist file referenced by the argument worklistFile and, on success, compare it against searchMask. If the file matches the search mask, its dataset part will be added to the matching records member variable.

◆ operator=()

WlmFileSystemInteractionManager& WlmFileSystemInteractionManager::operator= ( const WlmFileSystemInteractionManager & obj )

private

Privately defined assignment operator.

Parameters

obj	Object which shall be copied.

◆ ReferencedStudyOrPatientSequenceIsAbsentOrExistentButNonEmptyAndIncomplete()

OFBool WlmFileSystemInteractionManager::ReferencedStudyOrPatientSequenceIsAbsentOrExistentButNonEmptyAndIncomplete	(	DcmTagKey	sequenceTagKey,
		DcmItem *	dset
	)

protected

This function checks if the specified sequence attribute is absent or existent but non-empty and incomplete in the given dataset.

Parameters

sequenceTagKey	The sequence attribute which shall be checked.
dset	The dataset in which the attribute is contained.

Returns: OFTrue in case the sequence attribute is absent (and cannot be added to the dataset) or existent but non-empty and incomplete, OFFalse otherwise.

◆ SetEnableRejectionOfIncompleteWlFiles()

void WlmFileSystemInteractionManager::SetEnableRejectionOfIncompleteWlFiles ( OFBool value )

Set value in member variable.

Parameters

value The value to set.

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

dcmwlm/include/dcmtk/dcmwlm/wlfsim.h

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ WlmFileSystemInteractionManager()

Member Function Documentation

◆ AttributeIsAbsentOrEmpty()

◆ ClearMatchingRecords()

◆ ConnectToFileSystem()

◆ DatasetIsComplete()

◆ DatasetMatchesSearchMask()

◆ DescriptionAndCodeSequenceAttributesAreIncomplete()

◆ DetermineMatchingRecords()

◆ DisconnectFromFileSystem()

◆ FindNextWorklistFile()

◆ GetAttributeValueForMatchingRecord()

◆ GetNumberOfSequenceItemsForMatchingRecord()

◆ IsCalledApplicationEntityTitleSupported()

◆ IsUniversalMatch()

◆ MatchSequences()

◆ MatchWorklistFile()

◆ operator=()

◆ ReferencedStudyOrPatientSequenceIsAbsentOrExistentButNonEmptyAndIncomplete()

◆ SetEnableRejectionOfIncompleteWlFiles()