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liza/src/bucket/Bucket.js

118 lines
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JavaScript

/**
* Generalized key-value store
*
* Copyright (C) 2016 R-T Specialty, LLC.
*
* This file is part of the Liza Data Collection Framework
*
* liza is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* There's a hole in my bucket, dear Liza, dear Liza [...]
*/
var Interface = require( 'easejs' ).Interface;
/**
* Represents an object that is able to store key-value data with multiple
* indexes per value
*/
module.exports = Interface( 'Bucket',
{
/**
* Explicitly sets the contents of the bucket
*
* @param {Object.<string,Array>} data associative array of the data
*
* @param {boolean} merge_index whether to merge indexes individually
* @param {boolean} merge_null whether to merge undefined values (vs
* ignore)
*
* @return {Bucket} self
*/
'public setValues': [ 'data', 'merge_index', 'merge_null' ],
/**
* Overwrites values in the original bucket
*
* @param {Object.<string,Array>} data associative array of the data
*
* @return {Bucket} self
*/
'public overwriteValues': [ 'data' ],
/**
* Clears all data from the bucket
*
* @return {Bucket} self
*/
'public clear': [],
/**
* Calls a function for each each of the values in the bucket
*
* Note: This format is intended to be consistent with Array.forEach()
*
* @param {function( Object, number )} callback function to call for each
* value in the bucket
*
* @return {Bucket} self
*/
'public each': [ 'callback' ],
/**
* Returns the data for the requested field
*
* @param {string} name field name (with or without trailing brackets)
*
* @return {Array} data for the field, or empty array if none
*/
'public getDataByName': [ 'name' ],
/**
* Returns the data as a JSON string
*
* @return {string} data represented as JSON
*/
'public getDataJson': [],
/**
* Return raw bucket data
*
* TODO: remove; breaks encapsulation
*
* @return {Object} raw bucket data
*/
'public getData': [],
/**
* Calls a function for each each of the values in the bucket matching the
* given predicate
*
* @param {function(string)} pred predicate
* @param {function( Object, number )} callback function to call for each
* value in the bucket
*
* @return {Bucket} self
*/
'public filter': [ 'pred', 'callback' ]
} );