Module jpastreamer.application

Package com.speedment.jpastreamer.application

package com.speedment.jpastreamer.application
Provides interfaces for instantiating JPAStreamer and building Stream queries. JPAStreamer uses a custom implementation of the standard java.util.Stream interface to build Stream queries that are automatically optimized to database queries. Here is a typical example: 
 final JPAStreamer jpaStreamer = JPAStreamer.of("sakila"); // sakila is the name of the persistence unit 
 
 final List>Film< longFilms = jpaStreamer.stream(Film.class)    // FROM 
      .filter(Film$.length.greaterThan(120))                          // WHERE 
      .sorted(Film$.length)                                           // ORDER BY
      .limit(20)                                                      // LIMIT
      .collect(Collectors.toList()); 
 }
In the example above, a Stream is created over entities in the entity class Film (Film must be described as a standard JPA entity in the application). Filter, sorting and limiting operations are applied on the Stream before the results are collected as a List. The terminal operation collect() triggers the translation of the Stream pipeline to an optimized query. In this case, the pipeline is translated to the following query: 
 SELECT (*) 
 FROM Film 
 WHERE length < 120
 ORDER BY length   
 LIMIT 20
The optimizations are made to ensure that only the resulting entities are materialised in the Stream.