41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
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/**
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* Fetch all query objects (querySchemaModel, queryGeometryModel, queryRowsCollection)
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* if necessary
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*/
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module.exports = function (params) {
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if (!params) throw new Error('all query objects are required');
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if (!params.querySchemaModel) throw new Error('querySchemaModel is required');
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if (!params.queryGeometryModel) throw new Error('queryGeometryModel is required');
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if (!params.queryRowsCollection) throw new Error('queryRowsCollection is required');
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function fetchModel (model) {
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return new Promise(function (resolve, reject) {
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var subscribeToFinalStatus = false;
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if (model.shouldFetch()) {
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model.fetch();
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subscribeToFinalStatus = true;
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} else if (!model.isInFinalStatus()) {
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subscribeToFinalStatus = true;
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} else {
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resolve();
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}
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if (subscribeToFinalStatus) {
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model.once('inFinalStatus', function () {
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resolve();
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});
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}
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});
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}
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var schemaModelPromise = fetchModel(params.querySchemaModel);
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var geometryModelPromise = fetchModel(params.queryGeometryModel);
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return Promise.all([schemaModelPromise, geometryModelPromise])
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.then(function () {
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return fetchModel(params.queryRowsCollection); // rows collection depends on schema
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});
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};
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