mirror of
https://github.com/flynx/pWiki.git
synced 2025-11-04 04:50:09 +00:00
added index cache dependencies + docs/notes...
Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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@ -15,15 +15,14 @@ var pwpath = require('../path')
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//---------------------------------------------------------------------
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//
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// - define (name, generate, merge)
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// inline
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// online
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// - undefine (online)
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// - enumerate/list
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// - define (name, generate, merge) - DONE
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// inline - DONE
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// online - DONE
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// - undefine (online) - ???
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// - enumerate/list - DONE
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// - group operations:
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// - update item
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// - remove item
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// - reset (cache)
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// - reset (cache) - DONE
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// - custom - DONE
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//
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//
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@ -77,20 +76,52 @@ var pwpath = require('../path')
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// .__<name>_cache / .<name>
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//
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//
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// Options format:
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// {
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// // XXX
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// attr: false
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// | true
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// | <name>,
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//
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// // list of dependencies that when changed will trigger a cache
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// // drop on current index...
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// // NOTE: dependency checking is done via .modified time, if value
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// // is changed manually and not via an action then the system
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// // will not catch the change.
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// depends: [
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// <index-name>,
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// ...
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// ],
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//
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// // custom action...
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// // NOTE: this is the same as defining .__<name>_<action-name>__(..)
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// // method...
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// <action-name>: <func>,
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// }
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//
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//
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// XXX move this to a separate module (???)
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var makeIndexed =
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module.makeIndexed =
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function(name, generate, options={}){
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// XXX revise default...
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var cache = !!options.attr ?
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name
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// attr names...
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var cache =
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typeof(options.attr) == 'string' ?
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options.attr
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// XXX revise default...
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: !!options.attr ?
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name
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: `__${name}_cache`
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var merge = `__${name}_merge__`
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var special = `__${name}__`
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// make local cache...
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var _make = function(){
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return this[special] != null ?
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var res = this[special] != null ?
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this[special]()
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: generate.call(this) }
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: generate.call(this)
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meth.modified = Date.now()
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return res }
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// unwrap a promised value into cache...
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var _await = function(obj, val){
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if(val instanceof Promise){
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@ -98,18 +129,27 @@ function(name, generate, options={}){
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obj[cache] = value }) }
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return val }
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// build the method...
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var meth
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return (meth = Object.assign(
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function(action='get', ...args){
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var that = this
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// clear/reset...
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// action: clear/reset...
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if(action == 'clear'
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|| action == 'reset'){
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delete this[cache] }
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// clear...
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// action: clear...
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if(action == 'clear'){
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return }
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// other actions...
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// check dependencies (timestamps)...
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if(cache in this
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&& meth.options.depends){
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var cur = meth.modified
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for(var dep of meth.options.depends){
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if(this[dep].modified > cur){
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delete this[cache]
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break } } }
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// action: other...
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if(action != 'get'
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&& action != 'reset'){
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var action_meth = `__${name}_${action}__`
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@ -117,15 +157,18 @@ function(name, generate, options={}){
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var cur = cache in this ?
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this[cache]
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: meth.call(this, 'reset')
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return _await(this, this[cache] =
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var res = _await(this, this[cache] =
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// NOTE: this[action_meth] will fully shadow options[action]...
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action_meth in this ?
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this[action_meth](cur, ...args)
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: (action in options
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&& typeof(options[action]) == 'function') ?
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options[action].call(this, cur, ...args)
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: cur) }
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// get...
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: cur)
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res !== cur
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&& (meth.modified = Date.now())
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return res }
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// action: get/local...
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return _await(this,
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// NOTE: this is intentionally not cached...
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action == 'local' ?
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@ -146,30 +189,64 @@ function(name, generate, options={}){
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options,
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})) }
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var indexTest =
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module.indexTest =
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{
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// XXX make this a mixin...
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var IndexManagerMixin =
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module.IndexManagerMixin =
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object.Mixin('IndexManagerMixin', {
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// List of index handler attribute names...
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//
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// XXX rename???
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get indexi(){
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get index_attrs(){
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var that = this
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return object.deepKeys(this)
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.filter(function(key){
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var d = object.values(that, key, true).next().value.value
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return typeof(d) == 'function'
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&& d.indexed }) },
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//
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// .index()
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// .index('get')
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// -> <indexi>
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//
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// .index('clear')
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// -> <indexi>
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// .index('reset')
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// -> <indexi>
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// .index('local')
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// -> <indexi>
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//
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// .index(<action>, ...)
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// -> <indexi>
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//
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index: async function(action='get', ...args){
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// create a new index...
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if(action == 'new'){
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var res = makeIndexed(...args)
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var [name, _, options={}] = args
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var attr = name
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if(options.attr){
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var attr = `__${name}`
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Object.defineProperty(this, name, {
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get: function(){
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return this[attr] }, }) }
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return (this[attr] = res) }
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// propagate action...
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var that = this
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return Object.fromEntries(
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await Promise.all(
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this.indexi
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this.index_attrs
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.map(async function(name){
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return [
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that[name].attr,
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await that[name](action, ...args),
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] }))) },
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})
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var indexTest =
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module.indexTest =
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IndexManagerMixin({
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// tests...
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//
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moo: makeIndexed('moo', () => 123),
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@ -188,13 +265,23 @@ module.indexTest =
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return await cur + val },
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__soo: makeIndexed('soo', async () => 123),
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get soo(){
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return this.__soo() }
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return this.__soo() },
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// XXX need a way to link indexes...
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// Ex:
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// sum -> soo + boo + foo + moo
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// ...changing any of the summed values should drop cache of sum
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}
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__sum: makeIndexed('sum',
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async function(){
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return await this.moo()
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+ await this.foo_index()
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+ await this.boo()
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+ await this.soo },
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{ depends: [
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'moo',
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'foo_index',
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'boo',
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'__soo',
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], }),
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get sum(){
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return this.__sum() },
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})
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