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Lucene 4 cookbook : over 70 hands-on recipes to quickly and effectively integrate Lucene into your search application /
This book is for software developers who are new to Lucene and who want to explore the more advanced topics to build a search engine. Knowledge of Java is necessary to follow the code samples. You will learn core concepts, best practices, and also advanced features, in order to build an effective se...
| Clasificación: | Libro Electrónico |
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| Autores principales: | , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Birmingham, UK :
Packt Publishing,
2015.
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| Colección: | Quick answers to common problems.
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| Temas: | |
| Acceso en línea: | Texto completo (Requiere registro previo con correo institucional) |
Tabla de Contenidos:
- Cover; Copyright; Credits; About the Authors; About the Reviewers; www.PacktPub.com; Table of Contents; Preface; Chapter 1: Introducing Lucene; Introduction; Installing Lucene; Setting up a simple Java Lucene project; Obtaining an IndexWriter; Creating an analyzer; Creating fields; Creating and writing documents to an index; Deleting documents; Obtaining an IndexSearcher; Creating queries with the Lucene QueryParser; Performing a search; Enumerating results; Chapter 2: Analyzing Your Text; Introduction; Obtaining a common analyzer; Obtaining a TokenStream; Obtaining TokenAttribute values
- Using PositionIncrementAttributeUsing PerFieldAnalyzerWrapper; Defining custom TokenFilters; Defining custom analyzers; Defining custom tokenizers; Defining custom attributes; Chapter 3: Indexing Your Data; Introduction; Obtaining an IndexWriter; Creating a StringField; Creating a TextField; Creating a numeric field; Creating a DocValue Field; Transactional commits and index versioning; Reusing field and document objects per thread; Delving into field norms; Changing similarity implementation used during indexing; Chapter 4: Searching Your Indexes; Introduction; Obtaining IndexReaders
- Un-inverting single-valued fields in memory with FieldCacheTermVectors; IndexSearcher; Constructing queries; Specifying sort logic; Forming a search result; Pagination; Using Collectors; Sorting with custom FieldComparator; Chapter 5: Near Real-time Searching; Introduction; Using the DirectoryReader to open index in Near Real-Time; Using the SearcherManager to refresh IndexSearcher; Generational indexing with TrackingIndexWriter; Maintaining search sessions with SearcherLifetimeManager; Performance tuning: latency and throughput; Chapter 6: Querying and Filtering Data; Introduction
- Performing advanced filteringCreating a custom filter; Searching with QueryParser; TermQuery and TermRangeQuery; BooleanQuery; PrefixQuery and WildcardQuery; PhraseQuery and MultiPhraseQuery; FuzzyQuery; NumericRangeQuery; DisjunctionMaxQuery; RegexpQuery; SpanQuery; CustomScoreQuery; Chapter 7: Flexible Scoring; Introduction; Overriding similarity; Implementing the BM25 model; Implementing the language model; Implementing the divergence from randomness model; Implementing the information-based model; Chapter 8: Introducing Elasticsearch; Introduction; Getting Elasticsearch
- Creating a new indexPredefine field mappings; Adding a document; Deleting a document; Updating a document; Performing bulk indexing; Searching the index; Scaling Elasticsearch; Chapter 9: Extending Lucene with Modules; Introduction; Exploring spatial search; Implementing joins; Performing faceting; Implementing grouping; Employing autosuggest; Implementing highlighting; Index