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Return empty array instead of FALSE for async DB query methods

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The exception is valueQueryAsync(), which continues to return FALSE if
there's no result.

Note that this is different from the synchronous query methods.
This commit is contained in:
Dan Stillman 2013-08-12 16:28:22 -04:00
parent d05c5094c7
commit a29f8ea852
1 changed files with 7 additions and 11 deletions
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18
chrome/content/zotero/xpcom/db.js
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@ -842,10 +842,9 @@ Zotero.DBConnection.prototype.executeTransaction = function (func) {
/**
* @param {String} sql SQL statement to run
* @param {Array|String|Integer} [params] SQL parameters to bind
* @return {Promise} A Q promise for either an array of rows or FALSE if none.
* The individual rows are Proxy objects that return
* values from the underlying mozIStorageRows based
* on column names.
* @return {Promise|Array} A Q promise for an array of rows. The individual
* rows are Proxy objects that return values from the
* underlying mozIStorageRows based on column names.
*/
Zotero.DBConnection.prototype.queryAsync = function (sql, params) {
let conn;
@ -913,7 +912,7 @@ Zotero.DBConnection.prototype.queryAsync = function (sql, params) {
/**
* @param {String} sql SQL statement to run
* @param {Array|String|Integer} [params] SQL parameters to bind
* @return {Promise} A Q promise for either the value or FALSE if no rows
* @return {Promise:Array|Boolean} A Q promise for either the value or FALSE if no result
*/
Zotero.DBConnection.prototype.valueQueryAsync = function (sql, params) {
let self = this;
@ -953,13 +952,13 @@ Zotero.DBConnection.prototype.valueQueryAsync = function (sql, params) {
*
* @param {String} sql SQL statement to run
* @param {Array|String|Integer} [params] SQL parameters to bind
* @return {Promise} A Q promise for either the row or FALSE if no rows
* @return {Promise:Array} A Q promise for an array of row values
*/
Zotero.DBConnection.prototype.rowQueryAsync = function (sql, params) {
let self = this;
return this.queryAsync(sql, params)
.then(function (rows) {
return rows.length ? rows[0] : false;
return rows.length ? rows[0] : [];
});
};
@ -967,7 +966,7 @@ Zotero.DBConnection.prototype.rowQueryAsync = function (sql, params) {
/**
* @param {String} sql SQL statement to run
* @param {Array|String|Integer} [params] SQL parameters to bind
* @return {Promise} A Q promise for either the column or FALSE if no rows
* @return {Promise:Array} A Q promise for an array of values in the column
*/
Zotero.DBConnection.prototype.columnQueryAsync = function (sql, params) {
let conn;
@ -988,9 +987,6 @@ Zotero.DBConnection.prototype.columnQueryAsync = function (sql, params) {
return conn.executeCached(sql, params);
})
.then(function (rows) {
if (!rows.length) {
return false;
}
var column = [];
for (let i=0, len=rows.length; i<len; i++) {
column.push(self._getTypedValue(rows[i], 0));