| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| /* |
| * Description : Tests whether an ngram_index is applied to optimize a selection query using the similarity-jaccard function on 3-gram tokens. |
| * The index should be applied. |
| * Success : Yes |
| */ |
| |
| drop database test if exists; |
| create database test; |
| |
| use test; |
| |
| |
| set `import-private-functions` `true`; |
| |
| create type test.DBLPTypetmp as |
| { |
| id : int32, |
| dblpid : string, |
| authors : string, |
| misc : string |
| } |
| |
| create type test.DBLPType as |
| closed { |
| nested : DBLPTypetmp |
| } |
| |
| create table DBLP(DBLPType) primary key nested.id; |
| |
| create index ngram_index on DBLP (nested.title:string) type ngram (3) enforced; |
| |
| write output to asterix_nc1:"rttest/inverted-index-basic_ngram-jaccard.adm" |
| select element o |
| from DBLP as o |
| where (test.`similarity-jaccard`(test.`gram-tokens`(o.nested.title,3,false),test.`gram-tokens`('Transactions for Cooperative Environments',3,false)) >= 0.500000f) |
| ; |