This is the the driver for DB.SCRIPTDB described in Database abstraction with google apps script
MQS7yEChG0mh1Ucf_UhV-vKi_d-phDA33
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/** services requests for scriptDb from the cDataHandler * build this up as needed */ /** * DriverScriptDb * @param {cDataHandler} handler the datahandler thats calling me * @param {string} tableName table name or silo * @param {string} id some id to uniquely identify this scriptdb * @param {ScriptDbInstance} scriptDbOb a scriptDb to use * @return {DriverScriptDb} self */ function getLibraryInfo () { return { info: { name:'cDriverScriptDb', version:'2.01', key:'MQS7yEChG0mh1Ucf_UhV-vKi_d-phDA33', }, dependencies:[ cFlatten.getLibraryInfo() ] }; } var DriverScriptDb = function (handler,tableName,id,scriptDbOb) { var siloId = tableName; var self = this; var parentHandler = handler; var enums = parentHandler.getEnums(); var handle = scriptDbOb; var handleError, handleCode; var SAVECHUNK = 250; self.getDriveHandle = function () { return handle; }; self.getVersion = function () { return 'DriverScriptDb-v1.0'; }; /** * DriverScriptDb.getTableName() * @return {string} table name or silo */ self.getTableName = function () { return siloId; }; self.getDbId = function () { return id; }; self.unFlatten = function(ob) { return new cFlatten.Flattener().unFlatten(ob); } /** * DriverScriptDb.removeByIds() * @memberof DataHandler * @param {Array.string} ids list of handleKey ids to remove * @return {object} results from selected handler */ self.removeByIds = function (ids) { handleError='', handleCode=enums.CODE.OK; var qr = handle.removeByIdBatch(ids, false); if (!handle.allOk(qr)) { handleCode = enums.CODE.ASSERT; handleError = 'not all items got removed'; } return parentHandler.makeResults(handleCode,handleError); }; /** * DriverScriptDb.remove() * @param {object} queryOb some query object * @param {object} queryParams additional query parameters (if available) * @return {object} results from selected handler */ self.remove = function (queryOb,queryParams) { handleError='', handleCode=enums.CODE.OK; try { // do the query var queryResult = self.query (queryOb,queryParams,true); if (handleCode === enums.CODE.OK) { // store all the results if (queryResult.handleKeys.length) { var qr = handle.removeByIdBatch(queryResult.handleKeys, false); if (!handle.allOk(qr)) { handleCode = enums.CODE.ASSERT; handleError = 'not all items got removed'; } } else { handleCode = enums.CODE.NOMATCH; } } } catch(err) { handleError = err; handleCode = enums.CODE.DRIVER; } return parentHandler.makeResults (handleCode,handleError); }; /** * DriverScriptDb.save() * @param {Array.object} obs array of objects to write * @return {object} results from selected handler */ self.save = function (obs) { var result =null, done=0; handleError='', handleCode=enums.CODE.OK; try { while (handleCode === enums.CODE.OK && done < obs.length ) { var part = obs.slice(done, Math.min(obs.length, SAVECHUNK + done)); var result = parentHandler.rateLimitExpBackoff ( function () { return handle.saveBatch(part.map( function (d) { return siloId === enums.SETTINGS.NOSILO ? d : {siloId:siloId, data:d} ; }),false); }); done += part.length; if (!handle.allOk(result)) { handleCode = enums.CODE.ASSERT; handleError = 'not all items got saved'; } } } catch(err) { handleError = err; handleCode = enums.CODE.DRIVER; } return parentHandler.makeResults (handleCode,handleError,result); }; self.treatParams =function (dbResult,queryParams) { // trivial implementation of queryParams // LIMIT & SORT handleError='', handleCode=enums.CODE.OK; var params = parentHandler.getQueryParams(queryParams); if (params.handleCode === enums.CODE.OK) { // we have an array of good query params (params get sorted in sensible order) params.data.forEach( function (e) { if(e.param === 'sort') { dbResult = dbResult.sortBy("data."+e.sortKey, e.sortDescending ? handle.DESCENDING : handle.ASCENDING); } else if (e.param === 'limit') { dbResult = dbResult.limit(e.limit); } else if (e.param === 'skip') { dbResult = dbResult.startAt(e.skip); } else { handleError = e.param; handleCode = enums.CODE.PARAMNOTIMPLEMENTED; } }); } else { handleError = params.handleError; handleCode = params.handleCode; } return parentHandler.makeResults (handleCode,handleError,{dbResult:dbResult}); } /** * DriverScriptDb.query() * @param {object} queryOb some query object * @param {object} queryParams additional query parameters (if available) * @param {boolean} keepIds whether or not to keep driver specifc ids in the results * @return {object} results from selected handler */ self.query = function (queryOb,queryParams,keepIds) { var result =null; handleError='', handleCode=enums.CODE.OK; var driverIds = [], handleKeys = []; try { //clone query var cloneQuery = queryOb ? {data:JSON.parse(JSON.stringify(self.unFlatten(queryOb)))} : {}; // add siloid if (siloId !== enums.SETTINGS.NOSILO) { cloneQuery.siloId = siloId; } else { cloneQuery = cloneQuery.data || cloneQuery; } var paramResult = self.treatParams (handle.query (cloneQuery),queryParams) ; handleError = paramResult.handleError; handleCode = paramResult.handleCode; result = []; // if all is still good after that if (handleCode === enums.CODE.OK) { var r = paramResult.data.dbResult; while (r.hasNext()) { var rec = r.next(); if (keepIds) { var id = rec.getId(); driverIds.push({id:id}); handleKeys.push(id); } result.push(rec.data ? rec.data : rec); } } } catch(err) { handleError = err; handleCode = enums.CODE.DRIVER; } return parentHandler.makeResults (handleCode,handleError,result,keepIds ? driverIds :null,keepIds ? handleKeys:null); }; /** * DriverScriptDb.count() * @param {object} queryOb some query object * @param {object} queryParams additional query parameters (if available) * @return {object} results from selected handler */ self.count = function (queryOb,queryParams) { var result =null; handleError=null, handleCode=0; try { var data =[]; //clone query var cloneQuery = queryOb ? {data:JSON.parse(JSON.stringify(self.unFlatten(queryOb)))} : {}; // add siloid if (siloId !== enums.SETTINGS.NOSILO) { cloneQuery.siloId = siloId; } else { cloneQuery = cloneQuery.data || cloneQuery; } result = []; result.push({count:handle.count (cloneQuery)}); } catch(err) { handleError = err; handleCode = enums.CODE.DRIVER; } return parentHandler.makeResults (handleCode,handleError,result); }; /** * Driver.get() * @param {string} key the unique return in handleKeys for this object * @param {boolean} keepIds whether or not to keep driver specifc ids in the results * @return {object} results from selected handler */ self.get = function (key,keepIds) { var result =null; handleError='', handleCode=enums.CODE.OK var driverIds = [], handleKeys = []; try { var result = handle.load(key); if (result) { if (keepIds) { driverIds.push({id:key}); handleKeys.push(key); } } else { handleCode = enums.CODE.NOMATCH; } } catch(err) { handleError = err; handleCode = enums.CODE.DRIVER; } return parentHandler.makeResults (handleCode,handleError,result,keepIds ? driverIds :null,keepIds ? handleKeys:null); }; /** * Driver.update() * @param {string} key the unique return in handleKeys for this object * @param {object} ob what to update it to * @return {object} results from selected handler */ self.update = function (key,ob) { var result =null; handleError='', handleCode=enums.CODE.OK try { var result = handle.load(key); if (result) { // all this is because we can only save the same object we retrieved for (var k in result) { if (result.hasOwnProperty(k)) { delete result[k]; } } for (var k in ob) { result[k] = ob[k]; } handle.save(result); } else { handleCode = enums.CODE.NOMATCH; } } catch(err) { handleError = err; handleCode = enums.CODE.DRIVER; } return parentHandler.makeResults (handleCode,handleError,result); }; return self; } |