DCMTK Version 3.6.8
OFFIS DICOM Toolkit
|
This class maintains database handles based on the classical "index.dat" file. More...
Public Member Functions | |
DcmQueryRetrieveIndexDatabaseHandle (const char *storageArea, long maxStudiesPerStorageArea, long maxBytesPerStudy, OFCondition &result) | |
Constructor. More... | |
~DcmQueryRetrieveIndexDatabaseHandle () | |
Destructor. More... | |
void | setIdentifierChecking (OFBool checkFind, OFBool checkMove) |
Configure the DB module to perform (or not perform) checking of FIND and MOVE request identifiers. More... | |
OFCondition | makeNewStoreFileName (const char *SOPClassUID, const char *SOPInstanceUID, char *newImageFileName, size_t newImageFileNameLen) |
create a filename under which a DICOM object that is currently being received through a C-STORE operation can be stored. More... | |
OFCondition | storeRequest (const char *SOPClassUID, const char *SOPInstanceUID, const char *imageFileName, DcmQueryRetrieveDatabaseStatus *status, OFBool isNew=OFTrue) |
register the given DICOM object, which has been received through a C-STORE operation and stored in a file, in the database. More... | |
OFCondition | startFindRequest (const char *SOPClassUID, DcmDataset *findRequestIdentifiers, DcmQueryRetrieveDatabaseStatus *status) |
initiate FIND operation using the given SOP class UID (which identifies the query model) and DICOM dataset containing find request identifiers. More... | |
OFCondition | nextFindResponse (DcmDataset **findResponseIdentifiers, DcmQueryRetrieveDatabaseStatus *status, const DcmQueryRetrieveCharacterSetOptions &characterSetOptions) |
return the next available FIND response as a new DICOM dataset. More... | |
OFCondition | cancelFindRequest (DcmQueryRetrieveDatabaseStatus *status) |
cancel the ongoing FIND request, stop and reset every running operation associated with this request, delete existing temporary files. More... | |
OFCondition | startMoveRequest (const char *SOPClassUID, DcmDataset *moveRequestIdentifiers, DcmQueryRetrieveDatabaseStatus *status) |
initiate MOVE operation using the given SOP class UID (which identifies the retrieve model) and DICOM dataset containing move request identifiers. More... | |
OFCondition | nextMoveResponse (char *SOPClassUID, size_t SOPClassUIDSize, char *SOPInstanceUID, size_t SOPInstanceUIDSize, char *imageFileName, size_t imageFileNameSize, unsigned short *numberOfRemainingSubOperations, DcmQueryRetrieveDatabaseStatus *status) |
Constructs the information required for the next available C-MOVE sub-operation (the image SOP class UID, SOP Instance UID and an imageFileName containing the requested data). More... | |
OFCondition | cancelMoveRequest (DcmQueryRetrieveDatabaseStatus *status) |
cancel the ongoing MOVE request, stop and reset every running operation associated with this request, delete existing temporary files. More... | |
OFCondition | pruneInvalidRecords () |
Prune invalid records from the database. More... | |
void | enableQuotaSystem (OFBool enable) |
enable/disable the DB quota system (default: enabled) which causes images to be deleted if certain boundaries (number of studies, bytes per study) are exceeded. More... | |
OFBool | findSOPInstance (const char *storeArea, const OFString &sopClassUID, const OFString &sopInstanceUID) |
search for a SOP class and SOP instance UIDs in index file. More... | |
OFCondition | deleteImageFile (char *imgFile) |
deletes the given file only if the quota mechanism is enabled. More... | |
OFCondition | DB_lock (OFBool exclusive) |
create lock on database More... | |
OFCondition | DB_unlock () |
release lock on database | |
OFCondition | DB_IdxGetNext (int *idx, IdxRecord *idxRec) |
Get next Index record that is in use (i.e. More... | |
OFCondition | DB_IdxInitLoop (int *idx) |
seek to beginning of image records in index file More... | |
OFCondition | DB_IdxRead (int idx, IdxRecord *idxRec) |
read index record at given index More... | |
OFCondition | DB_GetStudyDesc (StudyDescRecord *pStudyDesc) |
get study descriptor record from start of index file More... | |
OFCondition | DB_StudyDescChange (StudyDescRecord *pStudyDesc) |
write study descriptor record to start of index file More... | |
OFCondition | DB_IdxRemove (int idx) |
deactivate index record at given index by setting an empty filename More... | |
OFCondition | instanceReviewed (int idx) |
clear the "is new" flag for the instance with the given index More... | |
const char * | getStorageArea () const |
return name of storage area | |
const char * | getIndexFilename () const |
return path to index file | |
![]() | |
DcmQueryRetrieveDatabaseHandle () | |
default constructor | |
virtual | ~DcmQueryRetrieveDatabaseHandle () |
Destructor. More... | |
virtual OFCondition | makeNewStoreFileName (const char *SOPClassUID, const char *SOPInstanceUID, char *newImageFileName, size_t newImageFileNameLen)=0 |
create a filename under which a DICOM object that is currently being received through a C-STORE operation can be stored. More... | |
virtual OFCondition | storeRequest (const char *SOPClassUID, const char *SOPInstanceUID, const char *imageFileName, DcmQueryRetrieveDatabaseStatus *status, OFBool isNew=OFTrue)=0 |
register the given DICOM object, which has been received through a C-STORE operation and stored in a file, in the database. More... | |
virtual OFCondition | startFindRequest (const char *SOPClassUID, DcmDataset *findRequestIdentifiers, DcmQueryRetrieveDatabaseStatus *status)=0 |
initiate FIND operation using the given SOP class UID (which identifies the query model) and DICOM dataset containing find request identifiers. More... | |
virtual OFCondition | nextFindResponse (DcmDataset **findResponseIdentifiers, DcmQueryRetrieveDatabaseStatus *status, const DcmQueryRetrieveCharacterSetOptions &characterSetOptions)=0 |
return the next available FIND response as a new DICOM dataset. More... | |
virtual OFCondition | cancelFindRequest (DcmQueryRetrieveDatabaseStatus *status)=0 |
cancel the ongoing FIND request, stop and reset every running operation associated with this request, delete existing temporary files. More... | |
virtual OFCondition | startMoveRequest (const char *SOPClassUID, DcmDataset *moveRequestIdentifiers, DcmQueryRetrieveDatabaseStatus *status)=0 |
initiate MOVE operation using the given SOP class UID (which identifies the retrieve model) and DICOM dataset containing move request identifiers. More... | |
virtual OFCondition | nextMoveResponse (char *SOPClassUID, size_t SOPClassUIDSize, char *SOPInstanceUID, size_t SOPInstanceUIDSize, char *imageFileName, size_t imageFileNameSize, unsigned short *numberOfRemainingSubOperations, DcmQueryRetrieveDatabaseStatus *status)=0 |
Constructs the information required for the next available C-MOVE sub-operation (the image SOP class UID, SOP Instance UID and an imageFileName containing the requested data). More... | |
virtual OFCondition | cancelMoveRequest (DcmQueryRetrieveDatabaseStatus *status)=0 |
cancel the ongoing MOVE request, stop and reset every running operation associated with this request, delete existing temporary files. More... | |
virtual OFCondition | pruneInvalidRecords ()=0 |
Prune invalid records from the database. More... | |
virtual void | setIdentifierChecking (OFBool checkFind, OFBool checkMove)=0 |
Configure the DB module to perform (or not perform) checking of FIND and MOVE request identifiers. More... | |
Static Public Member Functions | |
static void | printIndexFile (char *storeArea) |
dump database index file to stdout. More... | |
Private Member Functions | |
DcmQueryRetrieveIndexDatabaseHandle (const DcmQueryRetrieveIndexDatabaseHandle &other) | |
private undefined copy constructor | |
DcmQueryRetrieveIndexDatabaseHandle & | operator= (const DcmQueryRetrieveIndexDatabaseHandle &other) |
private undefined assignment operator | |
Static Private Member Functions | |
static OFBool | isConversionToUTF8Necessary (const OFString &characterSet) |
Determine if a character set is not compatible to UTF-8, i.e. if it is not UTF-8 or ASCII. More... | |
static OFBool | isConversionNecessary (const OFString &sourceCharacterSet, const OFString &destinationCharacterSet) |
Determine if data in the source character set must be converted to be compatible to the given destination character set. More... | |
Private Attributes | |
DB_Private_Handle * | handle_ |
database handle | |
OFBool | quotaSystemEnabled |
flag indicating whether or not the quota system is enabled | |
OFBool | doCheckFindIdentifier |
flag indicating whether or not the check function for FIND requests is enabled | |
OFBool | doCheckMoveIdentifier |
flag indicating whether or not the check function for MOVE requests is enabled | |
OFFilenameCreator | fnamecreator |
helper object for file name creation | |
This class maintains database handles based on the classical "index.dat" file.
A database handle maintains a connection to a database and encapsulates database support for store, find and move/get operations.
DcmQueryRetrieveIndexDatabaseHandle::DcmQueryRetrieveIndexDatabaseHandle | ( | const char * | storageArea, |
long | maxStudiesPerStorageArea, | ||
long | maxBytesPerStudy, | ||
OFCondition & | result | ||
) |
Constructor.
Creates and initializes a index file handle for the given database storage area (storageArea).
storageArea | name of storage area, must not be NULL |
maxStudiesPerStorageArea | maximum number of studies for this storage area, needed to correctly parse the index file. |
maxBytesPerStudy | maximum number of bytes per study, for quota mechanism |
result | upon successful initialization of the database handle, EC_Normal is returned in this parameter, otherwise an error code is returned. |
DcmQueryRetrieveIndexDatabaseHandle::~DcmQueryRetrieveIndexDatabaseHandle | ( | ) |
Destructor.
Destroys handle, cancels any ongoing request if necessary, deletes temporary files used for C-STORE and sub-operations of C-MOVE.
|
virtual |
cancel the ongoing FIND request, stop and reset every running operation associated with this request, delete existing temporary files.
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-FIND-RSP message is set. |
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
cancel the ongoing MOVE request, stop and reset every running operation associated with this request, delete existing temporary files.
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-MOVE-RSP message is set. |
Implements DcmQueryRetrieveDatabaseHandle.
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_GetStudyDesc | ( | StudyDescRecord * | pStudyDesc | ) |
get study descriptor record from start of index file
pStudyDesc | pointer to study record descriptor structure |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_IdxGetNext | ( | int * | idx, |
IdxRecord * | idxRec | ||
) |
Get next Index record that is in use (i.e.
references a non-empty a filename)
idx | pointer to index number, updated upon successful return |
idxRec | pointer to index record structure |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_IdxInitLoop | ( | int * | idx | ) |
seek to beginning of image records in index file
idx | initialized to -1 |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_IdxRead | ( | int | idx, |
IdxRecord * | idxRec | ||
) |
read index record at given index
idx | index |
idxRec | pointer to index record |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_IdxRemove | ( | int | idx | ) |
deactivate index record at given index by setting an empty filename
idx | index |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_lock | ( | OFBool | exclusive | ) |
create lock on database
exclusive | exclusive/shared lock flag |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::DB_StudyDescChange | ( | StudyDescRecord * | pStudyDesc | ) |
write study descriptor record to start of index file
pStudyDesc | pointer to study record descriptor structure |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::deleteImageFile | ( | char * | imgFile | ) |
deletes the given file only if the quota mechanism is enabled.
The image is not de-registered from the database by this routine.
imgFile | file name (path) to the file to be deleted. |
void DcmQueryRetrieveIndexDatabaseHandle::enableQuotaSystem | ( | OFBool | enable | ) |
enable/disable the DB quota system (default: enabled) which causes images to be deleted if certain boundaries (number of studies, bytes per study) are exceeded.
enable | weather to disable/enable |
OFBool DcmQueryRetrieveIndexDatabaseHandle::findSOPInstance | ( | const char * | storeArea, |
const OFString & | sopClassUID, | ||
const OFString & | sopInstanceUID | ||
) |
search for a SOP class and SOP instance UIDs in index file.
storeArea | name of storage area, must not be NULL |
sopClassUID | SOP Class UID to search for |
sopInstanceUID | SOP Instance UID to search for |
OFCondition DcmQueryRetrieveIndexDatabaseHandle::instanceReviewed | ( | int | idx | ) |
clear the "is new" flag for the instance with the given index
idx | index |
|
staticprivate |
Determine if data in the source character set must be converted to be compatible to the given destination character set.
sourceCharacterSet | the character set the data is encoded in. |
destinationCharacterSet | the character set that is requested, e.g. the character set that the SCU understands. |
|
staticprivate |
Determine if a character set is not compatible to UTF-8, i.e. if it is not UTF-8 or ASCII.
characterSet | the character set to inspect. |
|
virtual |
create a filename under which a DICOM object that is currently being received through a C-STORE operation can be stored.
SOPClassUID | SOP class UID of DICOM instance |
SOPInstanceUID | SOP instance UID of DICOM instance |
newImageFileName | file name is returned in this parameter. Memory must be provided by the caller and should be at least MAXPATHLEN+1 characters. The file name generated should be an absolute file name. |
newImageFileNameLen | length of buffer pointed to by newImageFileName |
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
return the next available FIND response as a new DICOM dataset.
findResponseIdentifiers | DICOM dataset returned in this parameter. The caller is responsible for destroying the findResponseIdentifiers when no longer needed. |
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-FIND-RSP message is set. Status will be PENDING if more FIND responses will be generated or SUCCESS if no more FIND responses will be generated (SUCCESS indicates the completion of a operation), or another status code upon failure. |
characterSetOptions | the character set options for response conversion etc. |
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
Constructs the information required for the next available C-MOVE sub-operation (the image SOP class UID, SOP Instance UID and an imageFileName containing the requested data).
SOPClassUID | pointer to string of at least 65 characters into which the SOP class UID for the next DICOM object to be transferred is copied. |
SOPClassUIDSize | size of SOPClassUID element |
SOPInstanceUID | pointer to string of at least 65 characters into which the SOP instance UID for the next DICOM object to be transferred is copied. |
SOPInstanceUIDSize | size of SOPInstanceUID element |
imageFileName | pointer to string of at least MAXPATHLEN+1 characters into which the file path for the next DICOM object to be transferred is copied. |
imageFileNameSize | size of imageFileName element |
numberOfRemainingSubOperations | On return, this parameter will contain the number of suboperations still remaining for the request (this number is needed by move responses with PENDING status). |
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-MOVE-RSP message is set. Status will be PENDING if more MOVE responses will be generated or SUCCESS if no more MOVE responses will be generated (SUCCESS indicates the completion of a operation), or another status code upon failure. |
Implements DcmQueryRetrieveDatabaseHandle.
|
static |
dump database index file to stdout.
storeArea | name of storage area, must not be NULL |
|
virtual |
Prune invalid records from the database.
Records referring to non-existent image files are invalid.
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
Configure the DB module to perform (or not perform) checking of FIND and MOVE request identifiers.
Default is no checking.
checkFind | checking for C-FIND parameters |
checkMove | checking for C-MOVE parameters |
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
initiate FIND operation using the given SOP class UID (which identifies the query model) and DICOM dataset containing find request identifiers.
SOPClassUID | SOP class UID of query service, identifies Q/R model |
findRequestIdentifiers | dataset containing request identifiers (i.e., the query) The caller retains responsibility for destroying the findRequestIdentifiers when no longer needed. |
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-FIND-RSP message is set. Status will be PENDING if any FIND responses will be generated or SUCCESS if no FIND responses will be generated (SUCCESS indicates the completion of a operation), or another status code upon failure. |
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
initiate MOVE operation using the given SOP class UID (which identifies the retrieve model) and DICOM dataset containing move request identifiers.
SOPClassUID | SOP class UID of retrieve service, identifies Q/R model |
moveRequestIdentifiers | dataset containing request identifiers (i.e., the query) The caller retains responsibility for destroying the moveRequestIdentifiers when no longer needed. |
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-MOVE-RSP message is set. Status will be PENDING if any MOVE responses will be generated or SUCCESS if no MOVE responses will be generated (SUCCESS indicates the completion of a operation), or another status code upon failure. |
Implements DcmQueryRetrieveDatabaseHandle.
|
virtual |
register the given DICOM object, which has been received through a C-STORE operation and stored in a file, in the database.
SOPClassUID | SOP class UID of DICOM instance |
SOPInstanceUID | SOP instance UID of DICOM instance |
imageFileName | file name (full path) of DICOM instance |
status | pointer to DB status object in which a DIMSE status code suitable for use with the C-STORE-RSP message is set. |
isNew | if true, the instance is marked as "new" in the database, if such a flag is maintained in the database. |
Implements DcmQueryRetrieveDatabaseHandle.