Java Persistence with Hibernate phần 6 pps

... objects with Java Persistence and/or EJB 3.0 components, read on. 9.4 The Java Persistence API We now store and load objects with the Java Persistence API. This is the API you use either in a Java ... instances become detached in a Java Persistence application. JPA persistence context scope You’ve used Java Persistence in a Java SE environment, with applicat...

Ngày tải lên: 12/08/2014, 19:21

... implements the Java Persistence standard. So, in addition to the new all-in-one Hibernate for every purpose, you can now use Hibernate like any Java Persistence provider, with or without other ... entities and value types 160 4.2 Mapping entities with identity 161 Understanding Java identity and equality 162 ■ Handling database identity 162 ■ Database primary keys 166...

Ngày tải lên: 12/08/2014, 19:21

... rewrite the main application code with JPA. “Hello World” with JPA These are your primary programming interfaces in Java Persistence: ■ javax .persistence. Persistence —A startup class that provides ... org .hibernate. dialect.HSQLDialect hibernate. c3p0.min_size = 5 hibernate. c3p0.max_size = 20 hibernate. c3p0.timeout = 300 hibernate. c3p0.max_statements = 50 hibernate. c3p0....

Ngày tải lên: 12/08/2014, 19:21

... differences between Hibernate and Java Persistence related to concepts discussed in this chapter. Table 3.1 Hibernate and JPA comparison chart for chapter 3 Hibernate Core Java Persistence and EJB ... to extend Hibernate& apos;s functionality with the pow- erful custom mapping type system. In chapters 6 and 7, we show you how to map Java collections and associations betw...

Ngày tải lên: 12/08/2014, 19:21

... types with annotations is different compared with mappings in XML; at the time of writing, it isn’t part of the Java Persistence standard but is available in Hibernate. 6. 3 Mapping collections with ... in. Hibernate Annotations is required for auto- matic deletion of orphaned entity instances. Table 6. 1 Hibernate and JPA comparison chart for chapter 6 (continued) Hiber...

Ngày tải lên: 12/08/2014, 19:21

... schema with custom DDL, for example. Table 7.1 Hibernate and JPA comparison chart for chapter 7 Hibernate Core Java Persistence and EJB 3.0 Hibernate supports key generation for shared primary ... to an intermediate entity class, or with a collection of components. Table 7.1 shows a summary you can use to compare native Hibernate features and Java Persistence. In the ne...

Ngày tải lên: 12/08/2014, 19:21

... in Hibernate or Java Persistence applications. In this section, we’ll show you how to avoid this and how to execute bulk and batch operations with Hibernate and JPA. 12.2.1 Bulk statements with ... Conversations with JPA 497 11.3 Conversations with JPA We now look at persistence context propagation and conversation implementa- tion with JPA and EJB 3.0. Just as with...

Ngày tải lên: 12/08/2014, 19:21

... navigating associations to new Criteria s. With the Java Persistence API, your starting point for queries is the EntityMan- ager . To create a javax .persistence. Query instance for JPA QL, call ... options we present in this section work for a native Hibernate application or an applica- tion that depends on Java Persistence interfaces and uses Hibernate as a persis- tenc...

Ngày tải lên: 12/08/2014, 19:21

... are the same. Java Persistence standardizes JPA QL and also allows the fallback to native SQL. 15.2.3 Native SQL in Java Persistence Java Persistence supports native SQL queries with the createNativeQuery() method ... native Hibernate features and Java Persistence. In the next chapter, we’ll bring all the pieces together and focus on the design and architecture of appl...

Ngày tải lên: 12/08/2014, 19:21

... a module of Hibernate Annotations. You can use Hibernate Validator even without Hibernate and Seam, with only hibernate3 .jar and hibernate- annotations.jar on your classpath, in any Java application. ... message. ■ Hibernate In native Hibernate, you can register Hibernate Validator events that hook into the internal processing of Hibernate persistence operations. With...

Ngày tải lên: 12/08/2014, 19:21