| 1 | /**
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| 2 | * JSON Schema link handler
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| 3 | * Copyright (c) 2007 Kris Zyp SitePen (www.sitepen.com)
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| 4 | * Licensed under the MIT (MIT-LICENSE.txt) license.
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| 5 | */
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| 6 | (function (root, factory) {
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| 7 | if (typeof define === 'function' && define.amd) {
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| 8 | // AMD. Register as an anonymous module.
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| 9 | define([], function () {
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| 10 | return factory();
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| 11 | });
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| 12 | } else if (typeof module === 'object' && module.exports) {
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| 13 | // Node. Does not work with strict CommonJS, but
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| 14 | // only CommonJS-like environments that support module.exports,
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| 15 | // like Node.
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| 16 | module.exports = factory();
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| 17 | } else {
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| 18 | // Browser globals
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| 19 | root.jsonSchemaLinks = factory();
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| 20 | }
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| 21 | }(this, function () {// setup primitive classes to be JSON Schema types
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| 22 | var exports = {};
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| 23 | exports.cacheLinks = true;
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| 24 | exports.getLink = function(relation, instance, schema){
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| 25 | // gets the URI of the link for the given relation based on the instance and schema
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| 26 | // for example:
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| 27 | // getLink(
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| 28 | // "brother",
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| 29 | // {"brother_id":33},
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| 30 | // {links:[{rel:"brother", href:"Brother/{brother_id}"}]}) ->
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| 31 | // "Brother/33"
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| 32 | var links = schema.__linkTemplates;
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| 33 | if(!links){
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| 34 | links = {};
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| 35 | var schemaLinks = schema.links;
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| 36 | if(schemaLinks && schemaLinks instanceof Array){
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| 37 | schemaLinks.forEach(function(link){
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| 38 | /* // TODO: allow for multiple same-name relations
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| 39 | if(links[link.rel]){
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| 40 | if(!(links[link.rel] instanceof Array)){
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| 41 | links[link.rel] = [links[link.rel]];
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| 42 | }
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| 43 | }*/
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| 44 | links[link.rel] = link.href;
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| 45 | });
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| 46 | }
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| 47 | if(exports.cacheLinks){
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| 48 | schema.__linkTemplates = links;
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| 49 | }
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| 50 | }
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| 51 | var linkTemplate = links[relation];
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| 52 | return linkTemplate && exports.substitute(linkTemplate, instance);
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| 53 | };
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| 54 |
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| 55 | exports.substitute = function(linkTemplate, instance){
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| 56 | return linkTemplate.replace(/\{([^\}]*)\}/g, function(t, property){
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| 57 | var value = instance[decodeURIComponent(property)];
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| 58 | if(value instanceof Array){
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| 59 | // the value is an array, it should produce a URI like /Table/(4,5,8) and store.get() should handle that as an array of values
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| 60 | return '(' + value.join(',') + ')';
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| 61 | }
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| 62 | return value;
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| 63 | });
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| 64 | };
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| 65 | return exports;
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| 66 | })); |
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