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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | 34x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 266x 133x 133x 34x 167x 133x 133x 133x 133x 133x 133x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 133x 34x 34x 34x 133x 133x 34x 34x | import dcmjs from 'dcmjs';
import { sortStudySeries } from '@ohif/core/src/utils/sortStudy';
import RetrieveMetadataLoader from './retrieveMetadataLoader';
// Series Date, Series Time, Series Description and Series Number to be included
// in the series metadata query result
const includeField = ['00080021', '00080031', '0008103E', '00200011'].join(',');
export class DeferredPromise {
metadata = undefined;
processFunction = undefined;
internalPromise = undefined;
thenFunction = undefined;
rejectFunction = undefined;
setMetadata(metadata) {
this.metadata = metadata;
}
setProcessFunction(func) {
this.processFunction = func;
}
getPromise() {
return this.start();
}
start() {
Iif (this.internalPromise) {
return this.internalPromise;
}
this.internalPromise = this.processFunction();
// in case then and reject functions called before start
if (this.thenFunction) {
this.then(this.thenFunction);
this.thenFunction = undefined;
}
Iif (this.rejectFunction) {
this.reject(this.rejectFunction);
this.rejectFunction = undefined;
}
return this.internalPromise;
}
then(func) {
if (this.internalPromise) {
return this.internalPromise.then(func);
} else {
this.thenFunction = func;
}
}
reject(func) {
if (this.internalPromise) {
return this.internalPromise.reject(func);
} else {
this.rejectFunction = func;
}
}
}
/**
* Creates an immutable series loader object which loads each series sequentially using the iterator interface.
*
* @param {DICOMWebClient} dicomWebClient The DICOMWebClient instance to be used for series load
* @param {string} studyInstanceUID The Study Instance UID from which series will be loaded
* @param {Array} seriesInstanceUIDList A list of Series Instance UIDs
*
* @returns {Object} Returns an object which supports loading of instances from each of given Series Instance UID
*/
function makeSeriesAsyncLoader(client, studyInstanceUID, seriesInstanceUIDList) {
return Object.freeze({
hasNext() {
return seriesInstanceUIDList.length > 0;
},
next() {
const { seriesInstanceUID, metadata } = seriesInstanceUIDList.shift();
const promise = new DeferredPromise();
promise.setMetadata(metadata);
promise.setProcessFunction(() => {
return client.retrieveSeriesMetadata({
studyInstanceUID,
seriesInstanceUID,
});
});
return promise;
},
});
}
/**
* Class for async load of study metadata.
* It inherits from RetrieveMetadataLoader
*
* It loads the one series and then append to seriesLoader the others to be consumed/loaded
*/
export default class RetrieveMetadataLoaderAsync extends RetrieveMetadataLoader {
/**
* @returns {Array} Array of preLoaders. To be consumed as queue
*/
*getPreLoaders() {
const preLoaders = [];
const { studyInstanceUID, filters: { seriesInstanceUID } = {}, client } = this;
// asking to include Series Date, Series Time, Series Description
// and Series Number in the series metadata returned to better sort series
// in preLoad function
let options = {
studyInstanceUID,
queryParams: {
includefield: includeField,
},
};
Iif (seriesInstanceUID) {
options.queryParams.SeriesInstanceUID = seriesInstanceUID;
preLoaders.push(client.searchForSeries.bind(client, options));
}
// Fallback preloader
preLoaders.push(client.searchForSeries.bind(client, options));
yield* preLoaders;
}
async preLoad() {
const preLoaders = this.getPreLoaders();
const result = await this.runLoaders(preLoaders);
const sortCriteria = this.sortCriteria;
const sortFunction = this.sortFunction;
const { naturalizeDataset } = dcmjs.data.DicomMetaDictionary;
const naturalized = result.map(naturalizeDataset);
return sortStudySeries(naturalized, sortCriteria, sortFunction);
}
async load(preLoadData) {
const { client, studyInstanceUID } = this;
const seriesInstanceUIDs = preLoadData.map(seriesMetadata => {
return { seriesInstanceUID: seriesMetadata.SeriesInstanceUID, metadata: seriesMetadata };
});
const seriesAsyncLoader = makeSeriesAsyncLoader(client, studyInstanceUID, seriesInstanceUIDs);
const promises = [];
while (seriesAsyncLoader.hasNext()) {
const promise = seriesAsyncLoader.next();
promises.push(promise);
}
return {
preLoadData,
promises,
};
}
async posLoad({ preLoadData, promises }) {
return {
preLoadData,
promises,
};
}
}
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