null+****@clear*****
null+****@clear*****
2012年 8月 1日 (水) 16:54:31 JST
Yoji SHIDARA 2012-08-01 16:54:31 +0900 (Wed, 01 Aug 2012) New Revision: 0191b24ca3822335020c38d69d612bf75859deef https://github.com/groonga/gcs/commit/0191b24ca3822335020c38d69d612bf75859deef Log: Add QueryTranslator Only Individual Terms are supported for now. Added files: lib/q-translator.js test/q-translator.test.js Added: lib/q-translator.js (+52 -0) 100644 =================================================================== --- /dev/null +++ lib/q-translator.js 2012-08-01 16:54:31 +0900 (c34b0a8) @@ -0,0 +1,52 @@ +// -*- indent-tabs-mode: nil; js2-basic-offset: 2 -*- +/* + QueryTranslator translates Queries into Boolean Queries in Amazon + CloudSearch. + + Expression Syntax for Queries: + http://docs.amazonwebservices.com/cloudsearch/latest/developerguide/Search.Requests.html#Search.ReqParams + + Expression Syntax for Boolean Queries: + http://docs.amazonwebservices.com/cloudsearch/latest/developerguide/Search.Requests.html#Search.MatchSetExpression + + FIXME: Returns null if the given query is not supported. + Shuold raise. +*/ + + +function QueryTranslator() { +} + +function throwTranslateError(query, context, detail) { + var message = ""; + message += "<"; + message += query.substring(0, context.offset); + message += "|" + query[context.offset] + "|"; + message += query.substring(context.offset + 1); + message += ">"; + message += ": " + detail; + throw new Error(message); +} + +QueryTranslator.prototype = { + translateIndividualTerm: function(query, context) { + var term = ''; + for (; context.offset < query.length; context.offset++) { + if (/[^ \+\-\|]/.test(query[context.offset])) { + term += query[context.offset]; + } else { + break; + } + } + return context.defaultField + ":'" + term + "'"; + }, + skipSpaces: function(query, context) { + for (; context.offset < query.length; context.offset++) { + if (query[context.offset] != " ") { + return; + } + } + } +}; + +exports.QueryTranslator = QueryTranslator; Added: test/q-translator.test.js (+35 -0) 100644 =================================================================== --- /dev/null +++ test/q-translator.test.js 2012-08-01 16:54:31 +0900 (21b99e6) @@ -0,0 +1,35 @@ +// -*- indent-tabs-mode: nil; js2-basic-offset: 2 -*- + +var utils = require('./test-utils'); +var assert = require('chai').assert; + +var QueryTranslator = require('../lib/q-translator').QueryTranslator; + +function testIndividualTerm(label, individualTerm, expectedBooleanQuery, + expectedOffset) { + test('term: ' + label + ': ' + + '<' + individualTerm + '> -> <' + expectedBooleanQuery + '>', function() { + var translator = new QueryTranslator(); + var context = { + offset: 0, + defaultField: 'field' + }; + var actualBooleanQuery = + translator.translateIndividualTerm(individualTerm, context); + assert.deepEqual({ + booleanQuery: actualBooleanQuery, + offset: context.offset + }, + { + booleanQuery: expectedBooleanQuery, + offset: expectedOffset + }); + }); +} + +suite('QueryTranslator', function() { + testIndividualTerm("an individual term", + "star wars", + "field:'star'", + "star".length); +}); -------------- next part -------------- HTML$B$NE:IU%U%!%$%k$rJ]4I$7$^$7$?(B...Download
