45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
// Define the StudyMetaData object. This is used as a cache
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// to store study meta data information to prevent unnecessary
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// calls to the server
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var StudyMetaData = {};
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/**
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* Retrieves study metadata using a server call, and fires a callback
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* when completed.
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*
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* @params {string} studyInstanceUid The UID of the Study to be retrieved
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* @params {function} doneCallback The callback function to be executed when the study retrieval has finished
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* @param failCallback The callback function to be executed when the study retrieval has failed
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*/
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getStudyMetadata = function(studyInstanceUid, doneCallback, failCallback) {
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// If the StudyMetaData cache already has data related to this
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// studyInstanceUid, then we should fire the doneCallback with this data
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// and stop here.
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var study = StudyMetaData[studyInstanceUid];
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if (study) {
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doneCallback(study);
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return;
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}
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// If no study metadata is in the cache variable, we need to retrieve it from
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// the server with a call.
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Meteor.call('GetStudyMetadata', studyInstanceUid, function(error, study) {
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log.info('worklistStudy getStudyMetadata: ' + studyInstanceUid);
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if (error) {
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log.warn(error);
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failCallback(error);
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return;
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}
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// Once we have retrieved the data, we sort the series' by series
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// and instance number in ascending order
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sortStudy(study);
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// Then we store this data in the cache variable
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StudyMetaData[studyInstanceUid] = study;
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// Finally, we fire the doneCallback with this study meta data
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doneCallback(study);
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});
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}; |