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

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

'use strict';

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

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

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

exports.commit = function (context, asyncDone) {
    context.logger.silly('dataCollectorDelete', 'commit');
    const 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) {
    let 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) {
    let 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);
        }
    );
};