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Adding syntax Highlight for querydsl-lucene3/README.md

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Vinicius da Costa Pires 2014-12-15 21:32:53 -02:00
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querydsl-lucene3/README.md
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@ -5,36 +5,39 @@ The Lucene module provides integration with the Lucene 3 indexing library.
**Maven integration**
Add the following dependencies to your Maven project :
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-lucene3</artifactId>
<version>${querydsl.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.1</version>
</dependency>
```XML
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-lucene3</artifactId>
<version>${querydsl.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.1</version>
</dependency>
```
**Creating the query types**
With fields year and title a manually created query type could look something like this:
public class QDocument extends EntityPathBase<Document>{
private static final long serialVersionUID = -4872833626508344081L;
public QDocument(String var) {
super(Document.class, PathMetadataFactory.forVariable(var));
}
public final StringPath year = createString("year");
public final StringPath title = createString("title");
```JAVA
public class QDocument extends EntityPathBase<Document>{
private static final long serialVersionUID = -4872833626508344081L;
public QDocument(String var) {
super(Document.class, PathMetadataFactory.forVariable(var));
}
public final StringPath year = createString("year");
public final StringPath title = createString("title");
}
```
QDocument represents a Lucene document with the fields year and title.
Code generation is not available for Lucene, since no schema data is available.
@ -42,17 +45,21 @@ Code generation is not available for Lucene, since no schema data is available.
**Querying**
Querying with Querydsl Lucene is as simple as this:
QDocument doc = new QDocument("doc");
IndexSearcher searcher = new IndexSearher(index);
LuceneQuery query = new LuceneQuery(true, searcher);
List<Document> documents = query
.where(doc.year.between("1800", "2000").and(doc.title.startsWith("Huckle"))
.list();
```JAVA
QDocument doc = new QDocument("doc");
IndexSearcher searcher = new IndexSearher(index);
LuceneQuery query = new LuceneQuery(true, searcher);
List<Document> documents = query
.where(doc.year.between("1800", "2000").and(doc.title.startsWith("Huckle"))
.list();
```
which is transformed into the following Lucene query :
+year:[1800 TO 2000] +title:huckle*
```
+year:[1800 TO 2000] +title:huckle*
```
For more information on the Querydsl Lucene module visit the reference documentation http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s05.html