manning Hibernate in Action phần 4 potx

... available in the package net.sf .hibernate. mapping. Keep in mind that adding a property to an existing persistent class mapping as shown here is easy, but programmatically creating a new mapping ... the distinction between entities and value types in Hibernate. These concepts are required for fine-grained object modeling. 3.5 Fine-grained object models A major objective of the Hibernate ... <joined-subclass> element to indicate a table-per-sub-class mapping (see listing 3.9). <?xml version="1.0"?>< ;hibernate- mapping>Listing 3.9 Hibernate <joined-subclass>...

manning Hibernate in Action phần 6 potx

... achieved using shared read locks and exclusive write locks. Reading transactions block writing transactions (but not other reading transactions), and writing transactions block all other transactions. ... the job of the Hibernate mapping types, and string is the name of a built -in Hiber-nate mapping type. The string mapping type isn’t the only one built into Hibernate; Hibernate comes ... interfaces that applications may use when defining new mapping types. These interfaces reduce the work involved in defin-ing custom mapping types and insulate the custom type from changes to the...

manning Hibernate in Action phần 1 docx

... identifier 140 ■ Introducing HQL 141 Query by criteria 142 ■ Query by example 143 ■ Fetching strategies 143 ■ Selecting a fetching strategy in mappings 146 Tuning object retrieval 151 4. 5 ... Using Hibernate in a servlet engine 296 Using Hibernate in an EJB container 311 8.2 Implementing application transactions 320 Approving a new auction 321 ■ Doing it the hard way 322 Using ... information, see the Hibernate road map: www.hiber-nate.org/About/RoadMap. xx Hibernate in Action CHRISTIAN BAUER GAVIN KING MANNING Greenwich ( 74 w. long.) Hibernate in Action Licensed...

manning Hibernate in Action phần 2 ppsx

... <jose.romero@galicia.seresco.es>integrating Hibernate Introducing and This chapter covers ■ Hibernate in action with “Hello World” ■ The Hibernate core programming interfaces ■ Integration with managed ... when you begin using Hibernate. Section 2.3 covers the problem of configuring Hibernate in some detail. Transaction interface The Transaction interface is an optional API. Hibernate applications ... <!DOCTYPE hibernate- mapping PUBLIC "-/ /Hibernate/ Hibernate Mapping DTD//EN" "http:/ /hibernate. sourceforge.net /hibernate- mapping-2.0.dtd"> < ;hibernate- mapping> ...

manning Hibernate in Action phần 3 pot

... elements in our mapping files. This approach is time-consuming and easily forgotten. Instead, we can implement Hibernate s NamingStrategy interface, as in listing 3.5 Listing 3.5 NamingStrategy ... <jose.romero@galicia.seresco.es> 54 CHAPTER 2 Introducing and integrating Hibernate Here is an example Hibernate configuration that binds the SessionFactory to the name hibernate/ HibernateFactory using Sun’s ... table in the database. To do that, we use the XML mapping document in listing 3 .4. classListing 3 .4 Hibernate XML mapping of the Category<?xml version="1.0"?> <!DOCTYPE hibernate- mapping...

manning Hibernate in Action phần 5 pps

... <jose.romero@galicia.seresco.es> 146 CHAPTER 4 Working with persistent objects 4. 4.6 Selecting a fetching strategy in mappings Hibernate lets you select default association fetching strategies by specifying attributes in ... question: How did Hibernate know which children were detached and which were new transient instances? 4. 3 .4 Distinguishing between transient and detached instances Since Hibernate doesn’t ... fine-grained runtime association fetching strategies. Hibernate supports both, it lets you specify a default fetching strategy in the mapping file and then override it at runtime in code. Hibernate...

manning Hibernate in Action phần 7 pptx

... public static final Rating EXCELLENT = new Rating("Excellent"); public static final Rating OK = new Rating("OK"); public static final Rating LOW = new Rating("Low"); ... static final Map INSTANCES = new HashMap(); static { INSTANCES.put(EXCELLENT.toString(), EXCELLENT); INSTANCES.put(OK.toString(), OK); INSTANCES.put(LOW.toString(), LOW); } private Rating(String ... session.createQuery(queryString) .setString("searchString", searchString) .list(); Because searchString is a user-supplied string variable, we use the setString() method of the Query interface to bind...

manning Hibernate in Action phần 8 docx

... expressing (inner and outer) joins: ■ An ordinary join in the from clause ■ A fetch join in the from clause ■ A theta-style join in the where clause ■ An implicit association join Later, ... candidates for a join operation. What most people think of when they hear the word join in the context of SQL databases is an inner join. An inner join is one of several types of joins, and it’s ... Retrieving objects efficiently 7.3 Joining associations You use a join to combine data in two (or more) relations. For example, we might join the data in the ITEM and BID tables, as shown in...

manning Hibernate in Action phần 9 doc

... <jose.romero@galicia.seresco.es> 346 CHAPTER 8 Writing Hibernate applications It’s illegal to invoke the original Hibernate Session from an Interceptor call-back. The session is in a fragile state during interceptor ... rendered and actions are exe-cuted). It’s also responsible for committing any pending database transactions. See the doFilter() method of this servlet filter in listing 8 .4. Listing 8 .4 The doFilter() ... ctx = new InitialContext(); String jndiName = "java :hibernate/ HibernateFactory"; sessions = (SessionFactory)ctx.lookup(jndiName); } catch (NamingException ex) { throw new InfrastructureException(ex);...

manning Hibernate in Action phần 10 pdf

... processes In some projects, the development of a domain model is driven by developers ana-lyzing the business domain in object-oriented terms. In others, it’s heavily influ-enced by an existing relational ... table: insert into ITEM values (4, 'Fum', 45 .0) An SQL update modifies an existing row: update ITEM set INITIAL_PRICE = 47 .0 where ITEM_ID = 4 ITEM ITEM_ID NAME INITIAL_PRICE 1 ... doi.acm.org/10.1 145 /3623 84. 362685. [Date 20 04] Date, C. J. 20 04. An Introduction to Database Systems, 8th ed. Boston: Pearson/Addison Wesley. [Evans 20 04] Evans, Eric. 20 04. Domain-Driven Design....

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