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loopback-connector
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Create feature base function

This commit is contained in:
loay 2017-04-25 15:37:39 -04:00
parent 70db124033
commit 3d20971709
1 changed files with 8 additions and 11 deletions
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19
lib/sql.js
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@ -1185,18 +1185,11 @@ SQLConnector.prototype.buildOrderBy = function(model, order) {
return '';
}
var self = this;
var supportedConnectors = ['mysql', 'postgresql', 'oracle', 'mssql'];
var usedConnector = this.dataSource.connector.name;
if (order === 'rand') {
if (usedConnector === 'mysql') {
return 'ORDER BY RAND()';
} else if (usedConnector === 'postgres') {
return 'ORDER BY RANDOM()';
} else if (usedConnector === 'oracle') {
return 'ORDER BY dbms_random.value';
} else if (usedConnector === 'mssql') {
return 'ORDER BY NEWID()';
}
if (order === '${random}') {
if (supportedConnectors.indexOf(usedConnector) > -1) return this.buildOrderByRandom();
else throw new Error(g.f('feature is not supported yet by this connector'));
} else {
if (typeof order === 'string') {
order = [order];
@ -1214,6 +1207,10 @@ SQLConnector.prototype.buildOrderBy = function(model, order) {
return 'ORDER BY ' + clauses.join(',');
};
SQLConnector.prototype.buildOrderByRandom = function() {
throw new Error(g.f('{{buildOrderByRandom()}} must be implemented by the connector'));
}
/**
* Build an array of fields for the database operation
* @param {String} model Model name