Add Go port of sample app.
Project: http://git-wip-us.apache.org/repos/asf/lucy/repo Commit: http://git-wip-us.apache.org/repos/asf/lucy/commit/b24c5c96 Tree: http://git-wip-us.apache.org/repos/asf/lucy/tree/b24c5c96 Diff: http://git-wip-us.apache.org/repos/asf/lucy/diff/b24c5c96 Branch: refs/heads/go_bindings_1 Commit: b24c5c963472b08ee2c448909657c5e1ac49c24f Parents: e956964 Author: Marvin Humphrey <[email protected]> Authored: Mon Nov 17 09:30:49 2014 -0800 Committer: Marvin Humphrey <[email protected]> Committed: Mon Nov 17 09:30:49 2014 -0800 ---------------------------------------------------------------------- go/sample/getting_started.go | 127 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/lucy/blob/b24c5c96/go/sample/getting_started.go ---------------------------------------------------------------------- diff --git a/go/sample/getting_started.go b/go/sample/getting_started.go new file mode 100644 index 0000000..fb69b74 --- /dev/null +++ b/go/sample/getting_started.go @@ -0,0 +1,127 @@ +/* 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. + */ + +/* + * Sample program to get started with the Go bindings for the Apache Lucy C + * library. + * + * Creates an index with a few documents and conducts a few searches. + */ + +package main + +import "git-wip-us.apache.org/repos/asf/lucy.git/go/lucy" +import "fmt" +import "log" + +func main() { + schema := createSchema() + index := "lucydemo" + indexDocuments(schema, index) + searcher, err := lucy.OpenIndexSearcher(index) + if err != nil { + log.Fatal(err) + } + defer searcher.Close() + performSearch(searcher, "ullamco") + performSearch(searcher, "ut OR laborum") + performSearch(searcher, `"fugiat nulla"`) +} + +func createSchema() *lucy.Schema { + // Create a new schema. + schema := lucy.NewSchema() + + // Create an analyzer. + analyzer := lucy.NewEasyAnalyzer("en") + + // Specify fields. + fieldType := lucy.NewFullTextType(analyzer) + schema.SpecField("title", fieldType) + schema.SpecField("content", fieldType) + + return schema +} + +type MyDoc struct { + Title string + Content string +} + +var docs []MyDoc = []MyDoc{ + MyDoc{ + Title: `lorem ipsum`, + Content: `Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do + eiusmod tempor incididunt ut labore et dolore magna aliqua.`, + }, + MyDoc{ + Title: `Ut enim`, + Content: `Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris + nisi ut aliquip ex ea commodo consequat.`, + }, + MyDoc{ + Title: `Duis aute`, + Content: `Duis aute irure dolor in reprehenderit in voluptate velit essei + cillum dolore eu fugiat nulla pariatur.`, + }, + MyDoc{ + Title: `Excepteur sint`, + Content: `Excepteur sint occaecat cupidatat non proident, sunt in culpa qui + officia deserunt mollit anim id est laborum.`, + }, +} + +func indexDocuments(schema *lucy.Schema, index string) { + indexerArgs := &lucy.OpenIndexerArgs{ + Schema: schema, + Index: index, + Create: true, + Truncate: true, + } + indexer, err := lucy.OpenIndexer(indexerArgs) + if err != nil { + log.Fatal(err) + } + defer indexer.Close() + + for _, doc := range docs { + err := indexer.AddDoc(&doc) + if err != nil { + log.Fatal(err) + } + } + err = indexer.Commit() + if err != nil { + log.Fatal(err) + } +} + +func performSearch(searcher lucy.Searcher, query string) { + fmt.Println("Searching for:", query) + + hits, err := searcher.Hits(query, 0, 10, nil) + if err != nil { + log.Fatal(err) + } + var hit MyDoc + for hits.Next(&hit) { + fmt.Printf(" Result: %s\n", hit.Title) + } + if err := hits.Error(); err != nil { + log.Fatal(err) + } + fmt.Println() +}
