Java Persistence with Hibernate 2nd phần 3 pot
Java Persistence with Hibernate 2nd phần 3 pot
... discussed
in chapter 3, section 3. 3.4, “Handling global metadata.”
You can set a naming strategy implementation in Java Persistence in your per-
sistence.xml file with the
hibernate. ejb.naming_strategy
...
Also, the Java Persistence interfaces don’t support full polymorphic queries;
only mapped entities (
@Entity
) can be officially part of a Java Persistence query
(no...
Java Persistence with Hibernate 2nd phần 4 potx
... right one).
Without extending Hibernate, you can choose from the following collections:
■
A
java. util.Set
is mapped with a
<set>
element. Initialize the collection
with a
java. util.HashSet
. ... Ini-
tialize with a
java. util.ArrayList
.
■
A
java. util.Collection
can be mapped with
<bag>
or
<idbag>
. Java
doesn’t have a
Bag
interface or an imple...
Java Persistence with Hibernate 2nd phần 5 potx
... well.
With
check="none"
, Hibernate expects your custom procedure to deal inter-
nally with failed updates (for example, by doing a version check of the row that
Customizing SQL 36 3
Mappings ... how
Hibernate binds arguments to
SQL parameters. The easiest way to figure out the
right
SQL statement and parameter order is to let Hibernate generate one for
Integrating le...
Java Persistence with Hibernate 2nd phần 1 pptx
... constraints 37 0
Database constraints 37 3
■
Creating indexes 37 5
Adding auxiliary DDL 37 6
8.4 Summary 37 8
PART 3CONVERSATIONAL OBJECT PROCESSING 38 1
9
Working with objects 38 3
9.1 The persistence ... Summary 431
10
Transactions and concurrency 433
10.1 Transaction essentials 434
Database and system transactions 435
■
Transactions in
a Hibernate application 437
■
Tra...
Java Persistence with Hibernate 2nd phần 2 doc
... <configuration>
Starting a Java Persistence project 73
< ;persistence xmlns="http:/ /java. sun.com/xml/ns /persistence& quot;
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
... into
persistence. xml (see listing 2. 13) .
< ;persistence- unit name="helloworld">
<provider>org .hibernate. ejb.HibernatePersistence</provider>
<...
Java Persistence with Hibernate 2nd phần 6 pps
... level (the database) and how you work with transactions in an application
that is based on native Hibernate, on Java Persistence, and with or without
Enterprise JavaBeans.
Transactions allow you ... model of Java Persistence; reattachment isn’t supported.
We haven’t paid much attention so far to the persistence context and how it
manages persistent objects.
9 .3. 3 Managing t...
Java Persistence with Hibernate 2nd phần 7 ppt
... manipulate the Hibernate
default behavior when objects are loaded and stored.
Table 11.2 Hibernate and JPA comparison chart for chapter 11
Hibernate Core Java Persistence and EJB 3. 0
Persistence ...
with thread or JTA transaction binding in Java SE
and Java EE. Persistence contexts are either
scoped to the transaction, or managed by the
application.
Java Persisten...
Java Persistence with Hibernate 2nd phần 8 pptx
... the expressiveness and flexibility that
you’re used to. This isn’t the case with Hibernate and Java Persistence.
Hibernate s powerful query facilities allow you to express almost everything
you ... 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
insta...
Java Persistence with Hibernate 2nd phần 9 pps
... 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 ...
SQL queries. Hibernate supports this.
Next, we discuss another more exotic but convenient Hibernate feature (Java
Persistence doesn’t have an equiv...
Java Persistence with Hibernate 2nd phần 10 pps
... database-integrity rule in a single Java annotation and
use Hibernate Validator to check instances of an annotated class at runtime.
■
Seam With Seam, you can integrate Hibernate Validator with the
presentation ...
itemEditor
.
A
POJO needs the EJB 3. 0
@Stateful
annotation to become a stateful session bean.
The
EJB 3. 0 container injects an
EntityManager
with a fresh pe...