@sap/xsodata/lib/sql/dataCollectorDelete.js

Expose data from a HANA database as OData V2 service with help of .xsodata files.

'use strict';

//Include
var dataCollector2 = require('./dataCollector2');
var statementProcessor = require('./statementProcessor');


exports.createTmpTables = function (context, asyncDone) {
    context.logger.silly('dataCollectorDelete', 'createTmpTables');
    var dbSeg = context.oData.dbSegmentLast;
    var stm = dbSeg.sql.stmContainer.createTmpDel;
    return statementProcessor.execStmsDirectlyNoResult(context,stm, asyncDone);
};


exports.insertDataToDelTable = function (context, asyncDone) {
    context.logger.silly('dataCollectorDelete', 'insertDataToDelTable');
    var dbSeg = context.oData.dbSegmentLast;
    statementProcessor.execStmsAsPrepared(context,[dbSeg.sql.stmContainer.insertTmpDel],  (err, context, resultset) => {
        if (err) {
            return asyncDone(err, context);
        }
        return dataCollector2.resultSetCheckRowCountForUpdate(context, resultset, 0, 1, asyncDone);
    });
};


exports.deleteTable = function (context, asyncDone) {
    context.logger.silly('dataCollectorDelete', 'deleteTable');
    var dbSeg = context.oData.dbSegmentLast;
    statementProcessor.execStmsAsPreparedNoResult(context,dbSeg.sql.stmContainer.delete,  asyncDone);
};


exports.commit = function (context, asyncDone) {
    context.logger.silly('dataCollectorDelete', 'commit');
    var client = context.db.client;
    client.commit(function (err) {
        if (err) {
            context.logger.info('SQL Exec', 'Commit Error: \n' + JSON.stringify(err));
            return asyncDone(err, context);
        }
        return asyncDone(null, context);
    });
};

/**
 * Executes truncation of temporary created tables
 *
 * @param {Object} context The xsodata context
 * @param {Function} asyncDone async waterfall callback
 */
exports.truncateTempTables = function (context, asyncDone) {
    var statements;
    context.logger.silly('dataCollectorDelete', 'truncateTempTables');

    statements = [context.sql.container.createTmpDelTruncate];
    return statementProcessor.execTempTableStatements(context,statements,  (err, context) => {
        if (err) {
            context.logger.silly('dataCollectorDelete', 'truncateTempTables rc !=0 but OK');
        }
        return asyncDone(null, context);
    });
};

/**
 * Executes deletion of temporary created tables
 *
 * @param {Object} context The xsodata context
 * @param {Function} asyncDone async waterfall callback
 */
exports.dropTempTables = function (context, asyncDone) {
    var statements;
    context.logger.silly('dataCollectorDelete', 'dropTempTables');

    statements = [context.sql.container.createTmpDelDrop];
    return statementProcessor.execTempTableStatements(context,statements,  (err, context) => {
        if (err) {
            context.logger.silly('dataCollectorDelete', 'dropTempTables rc !=0 but OK');
        }
        return asyncDone(null, context);
    });
};