1 | 'use strict';
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2 |
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3 | var SCALAR_TYPES = ['number', 'integer', 'string', 'boolean', 'null'];
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4 |
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5 | module.exports = function defFunc(ajv) {
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6 | defFunc.definition = {
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7 | type: 'array',
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8 | compile: function(keys, parentSchema, it) {
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9 | var equal = it.util.equal;
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10 | var scalar = getScalarKeys(keys, parentSchema);
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11 |
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12 | return function(data) {
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13 | if (data.length > 1) {
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14 | for (var k=0; k < keys.length; k++) {
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15 | var i, key = keys[k];
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16 | if (scalar[k]) {
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17 | var hash = {};
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18 | for (i = data.length; i--;) {
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19 | if (!data[i] || typeof data[i] != 'object') continue;
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20 | var prop = data[i][key];
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21 | if (prop && typeof prop == 'object') continue;
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22 | if (typeof prop == 'string') prop = '"' + prop;
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23 | if (hash[prop]) return false;
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24 | hash[prop] = true;
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25 | }
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26 | } else {
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27 | for (i = data.length; i--;) {
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28 | if (!data[i] || typeof data[i] != 'object') continue;
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29 | for (var j = i; j--;) {
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30 | if (data[j] && typeof data[j] == 'object' && equal(data[i][key], data[j][key]))
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31 | return false;
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32 | }
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33 | }
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34 | }
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35 | }
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36 | }
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37 | return true;
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38 | };
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39 | },
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40 | metaSchema: {
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41 | type: 'array',
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42 | items: {type: 'string'}
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43 | }
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44 | };
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45 |
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46 | ajv.addKeyword('uniqueItemProperties', defFunc.definition);
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47 | return ajv;
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48 | };
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49 |
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50 |
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51 | function getScalarKeys(keys, schema) {
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52 | return keys.map(function(key) {
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53 | var properties = schema.items && schema.items.properties;
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54 | var propType = properties && properties[key] && properties[key].type;
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55 | return Array.isArray(propType)
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56 | ? propType.indexOf('object') < 0 && propType.indexOf('array') < 0
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57 | : SCALAR_TYPES.indexOf(propType) >= 0;
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58 | });
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59 | }
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