Java Persistence with Hibernate 2nd phần 6 pps
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 ... annotated with
@Tran-
sient
or the
transient
Java keyword). In this code example, the next synchroni-
zation with the database occurs when the resource-local transaction is comm...
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 ... again with Hibernate:
69 7
Creating and testing
layered applications
This chapter covers
■
Creating layered applications
■
Managed components and services...
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 ... bean can be removed from faces-config.xml.
D
E
F
G
H
I
The Java EE 5.0 programming model 763
Overall, the application is transparent, with no obscure calls that mai...
Java Persistence with Hibernate 2nd phần 1 pptx
... cache 60 6
■
Controlling the second-level
cache 61 1
13.5 Summary 61 2
14
Querying with HQL and JPA QL 61 4
14.1 Creating and running queries 61 5
Preparing a query 61 6
■
Executing a query 62 5
Using ... 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...
Java Persistence with Hibernate 2nd phần 2 doc
... 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 ... <all required libraries>
+src
+hello
HelloWorld .java
Message .java
Message.hbm.xml
+persistence
HibernateUtil .java
hibernate. cfg.xml (or hibernate. properties)
log...
Java Persistence with Hibernate 2nd phần 3 pot
...
Also, the Java Persistence interfaces don’t support full polymorphic queries;
only mapped entities (
@Entity
) can be officially part of a Java Persistence query
(note that the Hibernate query ... switch to field access).
With annotations, declare immutability (and automatic refresh) with the
@Generated
Hibernate annotation:
Mapping entities with identity 165
Type.AU...
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
... to
a new
Session
(with
update()
or
saveOrUpdate()
), Hibernate may execute
unnecessary
SQL
UPDATE
statements to ensure that the database state is synchro-
nized with the persistence context ... 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
Custom...
Java Persistence with Hibernate 2nd phần 7 ppt
... 11.2 Hibernate and JPA comparison chart for chapter 11
Hibernate Core Java Persistence and EJB 3.0
Persistence context propagation is available
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 Persistence standardizes a persistence context
propagation mo...
Java Persistence with Hibernate 2nd phần 8 pptx
... mDate);
The same query and code looks slightly different in Java Persistence:
61 6 CHAPTER 14
Querying with HQL and JPA QL
1 Create the query, with any arbitrary restriction or projection of data that
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. Que...