1 | define(["dojo/_base/declare", "dojo/_base/lang", "dojo/data/ItemFileReadStore", "dojo/data/util/filter", "dojo/_base/array", "dojo/_base/json"], |
---|
2 | function(declare, lang, ItemFileReadStore, filterUtil, array, json) { |
---|
3 | |
---|
4 | // module: |
---|
5 | // dojox/data/AndOrReadStore |
---|
6 | // summary: |
---|
7 | // TODOC |
---|
8 | |
---|
9 | return declare("dojox.data.AndOrReadStore", [ItemFileReadStore], { |
---|
10 | // summary: |
---|
11 | // AndOrReadStore uses ItemFileReadStore as a base, modifying only the query (_fetchItems) section. |
---|
12 | // Supports queries of the form: query:"id:1* OR dept:'Sales Department' || (id:2* && NOT dept:S*)" |
---|
13 | // Includes legacy/widget support via: |
---|
14 | // | query:{complexQuery:"id:1* OR dept:'Sales Department' || (id:2* && NOT dept:S*)"} |
---|
15 | // The ItemFileReadStore implements the dojo/data/api/Read API and reads |
---|
16 | // data from JSON files that have contents in this format -- |
---|
17 | // | { items: [ |
---|
18 | // | { name:'Kermit', color:'green', age:12, friends:['Gonzo', {_reference:{name:'Fozzie Bear'}}]}, |
---|
19 | // | { name:'Fozzie Bear', wears:['hat', 'tie']}, |
---|
20 | // | { name:'Miss Piggy', pets:'Foo-Foo'} |
---|
21 | // | ]} |
---|
22 | // Note that it can also contain an 'identifier' property that specified which attribute on the items |
---|
23 | // in the array of items that acts as the unique identifier for that item. |
---|
24 | |
---|
25 | _containsValue: function(/*dojo/data/api/Item*/ item, /*attribute-name-string */ attribute, /*anything*/ value, |
---|
26 | /*String|RegExp?*/ regexp){ |
---|
27 | // summary: |
---|
28 | // Internal function for looking at the values contained by the item. |
---|
29 | // description: |
---|
30 | // Internal function for looking at the values contained by the item. This |
---|
31 | // function allows for denoting if the comparison should be case sensitive for |
---|
32 | // strings or not (for handling filtering cases where string case should not matter) |
---|
33 | // item: |
---|
34 | // The data item to examine for attribute values. |
---|
35 | // attribute: |
---|
36 | // The attribute to inspect. |
---|
37 | // value: |
---|
38 | // The value to match. |
---|
39 | // regexp: |
---|
40 | // Optional string or regular expression generated off value if value was of string type to handle wildcarding. |
---|
41 | // If present and attribute values are string, then it can be used for comparison instead of 'value' |
---|
42 | // If RegExp is a string, it is treated as an comparison statement and eval for number comparisons |
---|
43 | return array.some(this.getValues(item, attribute), function(possibleValue){ |
---|
44 | // if string... eval for math operator comparisons |
---|
45 | if(lang.isString(regexp)){ |
---|
46 | return eval(regexp); |
---|
47 | }else if(possibleValue !== null && !lang.isObject(possibleValue) && regexp){ |
---|
48 | if(possibleValue.toString().match(regexp)){ |
---|
49 | return true; // Boolean |
---|
50 | } |
---|
51 | } else if(value === possibleValue){ |
---|
52 | return true; // Boolean |
---|
53 | } else { |
---|
54 | return false; |
---|
55 | } |
---|
56 | }); |
---|
57 | }, |
---|
58 | |
---|
59 | filter: function(requestArgs, arrayOfItems, findCallback){ |
---|
60 | var items = []; |
---|
61 | if(requestArgs.query){ |
---|
62 | //Complete copy, we may have to mess with it. |
---|
63 | //Safer than clone, which does a shallow copy, I believe. |
---|
64 | var query = json.fromJson(json.toJson(requestArgs.query)); |
---|
65 | //Okay, object form query, we have to check to see if someone mixed query methods (such as using FilteringSelect |
---|
66 | //with a complexQuery). In that case, the params need to be anded to the complex query statement. |
---|
67 | //See defect #7980 |
---|
68 | if(typeof query == "object" ){ |
---|
69 | var count = 0; |
---|
70 | var p; |
---|
71 | for(p in query){ |
---|
72 | count++; |
---|
73 | } |
---|
74 | if(count > 1 && query.complexQuery){ |
---|
75 | var cq = query.complexQuery; |
---|
76 | var wrapped = false; |
---|
77 | for(p in query){ |
---|
78 | if(p !== "complexQuery"){ |
---|
79 | //We should wrap this in () as it should and with the entire complex query |
---|
80 | //Not just part of it. |
---|
81 | if(!wrapped){ |
---|
82 | cq = "( " + cq + " )"; |
---|
83 | wrapped = true; |
---|
84 | } |
---|
85 | //Make sure strings are quoted when going into complexQuery merge. |
---|
86 | var v = requestArgs.query[p]; |
---|
87 | if(lang.isString(v)){ |
---|
88 | v = "'" + v + "'"; |
---|
89 | } |
---|
90 | cq += " AND " + p + ":" + v; |
---|
91 | delete query[p]; |
---|
92 | |
---|
93 | } |
---|
94 | } |
---|
95 | query.complexQuery = cq; |
---|
96 | } |
---|
97 | } |
---|
98 | |
---|
99 | var ignoreCase = requestArgs.queryOptions ? requestArgs.queryOptions.ignoreCase : false; |
---|
100 | //for complex queries only: pattern = query[:|=]"NOT id:23* AND (type:'test*' OR dept:'bob') && !filed:true" |
---|
101 | //logical operators are case insensitive: , NOT AND OR ( ) ! && || // "," included for quoted/string legacy queries. |
---|
102 | if(typeof query != "string"){ |
---|
103 | query = json.toJson(query); |
---|
104 | query = query.replace(/\\\\/g,"\\"); //counter toJson expansion of backslashes, e.g., foo\\*bar test. |
---|
105 | } |
---|
106 | query = query.replace(/\\"/g,"\""); //ditto, for embedded \" in lieu of " availability. |
---|
107 | var complexQuery = lang.trim(query.replace(/{|}/g,"")); //we can handle these, too. |
---|
108 | var pos2, i; |
---|
109 | if(complexQuery.match(/"? *complexQuery *"?:/)){ //case where widget required a json object, so use complexQuery:'the real query' |
---|
110 | complexQuery = lang.trim(complexQuery.replace(/"?\s*complexQuery\s*"?:/,"")); |
---|
111 | var quotes = ["'",'"']; |
---|
112 | var pos1,colon; |
---|
113 | var flag = false; |
---|
114 | for(i = 0; i<quotes.length; i++){ |
---|
115 | pos1 = complexQuery.indexOf(quotes[i]); |
---|
116 | pos2 = complexQuery.indexOf(quotes[i],1); |
---|
117 | colon = complexQuery.indexOf(":",1); |
---|
118 | if(pos1 === 0 && pos2 != -1 && colon < pos2){ |
---|
119 | flag = true; |
---|
120 | break; |
---|
121 | } //first two sets of quotes don't occur before the first colon. |
---|
122 | } |
---|
123 | if(flag){ //dojo.toJson, and maybe user, adds surrounding quotes, which we need to remove. |
---|
124 | complexQuery = complexQuery.replace(/^\"|^\'|\"$|\'$/g,""); |
---|
125 | } |
---|
126 | } //end query="{complexQuery:'id:1* || dept:Sales'}" parsing (for when widget required json object query). |
---|
127 | var complexQuerySave = complexQuery; |
---|
128 | //valid logical operators. |
---|
129 | var begRegExp = /^>=|^<=|^<|^>|^,|^NOT |^AND |^OR |^\(|^\)|^!|^&&|^\|\|/i; //trailing space on some tokens on purpose. |
---|
130 | var sQuery = ""; //will be eval'ed for each i-th candidateItem, based on query components. |
---|
131 | var op = ""; |
---|
132 | var val = ""; |
---|
133 | var pos = -1; |
---|
134 | var err = false; |
---|
135 | var key = ""; |
---|
136 | var value = ""; |
---|
137 | var tok = ""; |
---|
138 | pos2 = -1; |
---|
139 | for(i = 0; i < arrayOfItems.length; ++i){ |
---|
140 | var match = true; |
---|
141 | var candidateItem = arrayOfItems[i]; |
---|
142 | if(candidateItem === null){ |
---|
143 | match = false; |
---|
144 | }else{ |
---|
145 | //process entire string for this i-th candidateItem. |
---|
146 | complexQuery = complexQuerySave; //restore query for next candidateItem. |
---|
147 | sQuery = ""; |
---|
148 | //work left to right, finding either key:value pair or logical operator at the beginning of the complexQuery string. |
---|
149 | //when found, concatenate to sQuery and remove from complexQuery and loop back. |
---|
150 | while(complexQuery.length > 0 && !err){ |
---|
151 | op = complexQuery.match(begRegExp); |
---|
152 | |
---|
153 | //get/process/append one or two leading logical operators. |
---|
154 | while(op && !err){ //look for leading logical operators. |
---|
155 | complexQuery = lang.trim(complexQuery.replace(op[0],"")); |
---|
156 | op = lang.trim(op[0]).toUpperCase(); |
---|
157 | //convert some logical operators to their javascript equivalents for later eval. |
---|
158 | op = op == "NOT" ? "!" : op == "AND" || op == "," ? "&&" : op == "OR" ? "||" : op; |
---|
159 | op = " " + op + " "; |
---|
160 | sQuery += op; |
---|
161 | op = complexQuery.match(begRegExp); |
---|
162 | }//end op && !err |
---|
163 | |
---|
164 | //now get/process/append one key:value pair. |
---|
165 | if(complexQuery.length > 0){ |
---|
166 | var opsRegex = /:|>=|<=|>|</g, |
---|
167 | matches = complexQuery.match(opsRegex), |
---|
168 | match = matches && matches.shift(), |
---|
169 | regex; |
---|
170 | |
---|
171 | pos = complexQuery.indexOf(match); |
---|
172 | if(pos == -1){ |
---|
173 | err = true; |
---|
174 | break; |
---|
175 | }else{ |
---|
176 | key = lang.trim(complexQuery.substring(0,pos).replace(/\"|\'/g,"")); |
---|
177 | complexQuery = lang.trim(complexQuery.substring(pos + match.length)); |
---|
178 | tok = complexQuery.match(/^\'|^\"/); //quoted? |
---|
179 | if(tok){ |
---|
180 | tok = tok[0]; |
---|
181 | pos = complexQuery.indexOf(tok); |
---|
182 | pos2 = complexQuery.indexOf(tok,pos + 1); |
---|
183 | if(pos2 == -1){ |
---|
184 | err = true; |
---|
185 | break; |
---|
186 | } |
---|
187 | value = complexQuery.substring(pos + match.length,pos2); |
---|
188 | if(pos2 == complexQuery.length - 1){ //quote is last character |
---|
189 | complexQuery = ""; |
---|
190 | }else{ |
---|
191 | complexQuery = lang.trim(complexQuery.substring(pos2 + 1)); |
---|
192 | } |
---|
193 | if (match != ':') { |
---|
194 | regex = this.getValue(candidateItem, key) + match + value; |
---|
195 | } else { |
---|
196 | regex = filterUtil.patternToRegExp(value, ignoreCase); |
---|
197 | } |
---|
198 | sQuery += this._containsValue(candidateItem, key, value, regex); |
---|
199 | } |
---|
200 | else{ //not quoted, so a space, comma, or closing parens (or the end) will be the break. |
---|
201 | tok = complexQuery.match(/\s|\)|,/); |
---|
202 | if(tok){ |
---|
203 | var pos3 = new Array(tok.length); |
---|
204 | for(var j = 0;j<tok.length;j++){ |
---|
205 | pos3[j] = complexQuery.indexOf(tok[j]); |
---|
206 | } |
---|
207 | pos = pos3[0]; |
---|
208 | if(pos3.length > 1){ |
---|
209 | for(var j=1;j<pos3.length;j++){ |
---|
210 | pos = Math.min(pos,pos3[j]); |
---|
211 | } |
---|
212 | } |
---|
213 | value = lang.trim(complexQuery.substring(0,pos)); |
---|
214 | complexQuery = lang.trim(complexQuery.substring(pos)); |
---|
215 | }else{ //not a space, so must be at the end of the complexQuery. |
---|
216 | value = lang.trim(complexQuery); |
---|
217 | complexQuery = ""; |
---|
218 | } //end inner if(tok) else |
---|
219 | if (match != ':') { |
---|
220 | regex = this.getValue(candidateItem, key) + match + value; |
---|
221 | } else { |
---|
222 | regex = filterUtil.patternToRegExp(value, ignoreCase); |
---|
223 | console.log("regex value: ", value, " regex pattern: ", regex); |
---|
224 | } |
---|
225 | sQuery += this._containsValue(candidateItem, key, value, regex); |
---|
226 | } //end outer if(tok) else |
---|
227 | } //end found ":" |
---|
228 | } //end if(complexQuery.length > 0) |
---|
229 | } //end while complexQuery.length > 0 && !err, so finished the i-th item. |
---|
230 | match = eval(sQuery); |
---|
231 | } //end else is non-null candidateItem. |
---|
232 | if(match){ |
---|
233 | items.push(candidateItem); |
---|
234 | } |
---|
235 | } //end for/next of all items. |
---|
236 | if(err){ |
---|
237 | //soft fail. |
---|
238 | items = []; |
---|
239 | console.log("The store's _fetchItems failed, probably due to a syntax error in query."); |
---|
240 | } |
---|
241 | }else{ |
---|
242 | // No query... |
---|
243 | // We want a copy to pass back in case the parent wishes to sort the array. |
---|
244 | // We shouldn't allow resort of the internal list, so that multiple callers |
---|
245 | // can get lists and sort without affecting each other. We also need to |
---|
246 | // filter out any null values that have been left as a result of deleteItem() |
---|
247 | // calls in ItemFileWriteStore. |
---|
248 | for(var i = 0; i < arrayOfItems.length; ++i){ |
---|
249 | var item = arrayOfItems[i]; |
---|
250 | if(item !== null){ |
---|
251 | items.push(item); |
---|
252 | } |
---|
253 | } |
---|
254 | } //end if there is a query. |
---|
255 | findCallback(items, requestArgs); |
---|
256 | } //end filter function |
---|
257 | |
---|
258 | }); |
---|
259 | |
---|
260 | }); |
---|