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Chapter 31 Chapter31EJB, JSS, and JTS Properties EJB Container-level Properties Set EJB container properties in partition.xml (each Partition has its own properties file). This file is located in the following directory: /var/domains/base/configurations/configuration_name/mos/ partition_name/adm/properties Table 31.1 EJB container properties Property Description Default ejb.copy_arguments=true|false ejb.use_java_serialization=true|false This flag causes arguments to be copied in intra-bean in-process calls. By default, intra-bean calls use pass-byreference semantics. Enable this flag to cause intra-bean calls to use pass-byvalue semantics. Note: A number of EJBs will run significantly slower using pass-by-value semantics. If set it overrides use of IIOP serialization with Java serialization for things like session passivation, and so forth. false false Chapter 31: EJB, JSS, and JTS Properties 331
EJB Container-level Properties Table 31.1 EJB container properties (continued) Property Description Default ejb.useDynamicStubs=true|false ejb.usePKHashCodeAndEquals=true|false This property is only relevant for CMP 2.0 entity beans that provide local interfaces. If set, the Container, which otherwise uses CORBA to dispatch calls, uses a dynamic proxy-based scheme to dispatch calls (creating custom lightweight, non-CORBA references). These local dynamic stubs provide many optimizations, especially due to the callers and callees being in the same VM, making a direct dispatch to the beans without going through the CORBA layer. Also, since the dynamic stubs are aware of the EJB container data structures, they access the target beans more quickly. Note that currently the stub generator, java2iiop (called using the iastool or directly) still generates the stubs for all the interfaces in the archive. When ejb.useDynamicStubs is active, the subset of stubs that correspond to the selected CMP 2.0 beans are ignored. This feature, when used, makes the whole dispatch mechanism dynamic, providing dynamic stubs for the client side as well as dynamic skeletons on the <strong>server</strong> side. Any statically generated stub and skeleton classes in the archive are ignored. You set the property in the bean. However, if there isn't an issue with using the property in all the entity beans, the easiest way is to set it at the EAR level in the deployment descriptor. Important: You must use this property in conjunction with ejb.usePKHashCodeAndEquals. Data structures that support Active Cache (TxReady cache) and Associated Cache (Ready beans cache) use java.util.Hashtable, and java.util.HashMap. The values (entity bean instances) pooled in these data structures are keyed on the primary key values of the cached entity beans. As we know, the implementation of Hashtable relies on computing hashCode() and calling equals() methods of the keys to place and locate the values. These data structures are in the critical code path and are accessed frequently by the container while dispatching calls to methods in entity beans The default in BES is a reflectionbased computation. When this property is set, the container uses a user supplied implementation of the equals() and hashCode() methods. true true 332 BES Developer’s Guide
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Developer’s Guide Enterprise Serv
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Contents Chapter 1 Introduction to
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Entity beans . . . . . . . . . . .
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Chapter 23 Using JMS 209 Configurin
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Entity Bean Properties (applicable
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Figures 0.1 Borland Enterprise Serv
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BES Products and Editions overview
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Documentation conventions Important
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Contacting Borland support World Wi
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BES services overview Figure 0.1 Bo
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The Partition and its services ■
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Borland Enterprise Server and J2EE
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14 BES Developer’s Guide
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Creating Partitions Creating Partit
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Running Partitions Table 3.1 Option
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Configuring Partitions You can also
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JMX support in Partitions ■ ■ A
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JMX support in Partitions Figure 3.
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Thread pools Partition properties r
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Apache web server implementation Fo
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Borland web container implementatio
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Smart Agent implementation Smart Ag
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Apache web server to Borland web co
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Large data transfer Downloading lar
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Large data transfer Uploading large
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IIS web server to Borland web conta
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Session management with JSS If an i
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Managing and configuring the JSS Co
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The Borland IIOP connector BES supp
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Setting up your web container with
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Web-enabling your CORBA server Impo
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Configuring your Apache web server
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Configuring your Apache web server
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Web Services and Partitions ■ ■
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Web Service providers Java:RPC prov
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How Borland Web Services work
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Packaging Web Service Application A
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Tools Overview Java2WSDL tool Note
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Client view of an enterprise bean L
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Client view of an enterprise bean E
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Managing transactions Managing tran
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Support for JNDI Support for JNDI T
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EJB to CORBA mapping A CORBA progra
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Application Client architecture Pac
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Document Type Definitions (DTDs) my
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Support of references and links The
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Use of Manifest files Use of Manife
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Sessions in secondary storage If yo
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Container-managed persistence and R
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Implementing an entity bean Generat
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Container-Managed Persistence in Bo
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Setting Properties Setting Properti
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Setting Properties into a BLOB. The
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Setting Properties Automatic table
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Container-managed persistence and R
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Setting Properties J2EE 1.3 Entity
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Setting Properties Figure 16.2 Edit
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Setting Properties Table 16.1 ejb.m
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Setting Properties Table 16.3 Table
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Setting Properties Security Propert
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Aggregate Functions in EJB-QL Selec
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Support for ORDER BY Support for OR
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Overriding SQL generated from EJB-Q
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Container-managed data access suppo
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Generating primary keys from a cust
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Implementing primary key generation
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Transaction manager services Consis
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Transaction manager services When t
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Transaction manager services Follow
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Declarative transaction management
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Declarative transaction management
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JDBC API Modifications JDBC API Mod
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Handling of EJB exceptions Applicat
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Client View of an MDB Client View o
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Clustering of MDBs This is yet anot
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Error Recovery Redelivered messages
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JNDI Definitions Module Important s
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Disabling and Enabling a Deployed D
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Configuring JDBC Datasources In the
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Configuring JDBC Datasources To add
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Defining the Connection Pool Proper
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Defining the Connection Pool Proper
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Descriptions of Borland Enterprise
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Advanced Topics for Defining JDBC D
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Connecting to JDBC Resources from J
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Configuring JMS Connection Factorie
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Defining Connection Pool Properties
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Obtaining JMS Connection Factories
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JMS and Transactions and its accomp
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JMS and Transactions For instance:
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Configuring JMS administered object
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Tibco Creating Clustered JMS Servic
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Sonic serverUrl String localhost:72
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Sonic Creating Clustered JMS Servic
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OpenJMS Even though OpenJMS can be
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OpenJMS Important If you use OpenJM
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OpenJMS openjms.clean_messages_on_s
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OpenJMS Table 24.1 Property Name De
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Other JMS providers The following a
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Creating the Interceptor Class For
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Creating the JAR file Creating the
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Components Components The Connector
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System Contracts Connection Managem
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System Contracts Security Managemen
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Common Client Interface (CCI) Conne
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Packaging and Deployment Figure 26.
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Resource Adapters Resource Adapters
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Connection management Connection ma
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Security management with the Securi
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Security management with the Securi
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Resource Adapter overview Note Reso
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Deployment Descriptors for the Reso
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Developing the Resource Adapter Con
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Deploying the Resource Adapter Pack
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Application development overview 8
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Application development overview //
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Application development overview
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Other Considerations Other Consider
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Other Considerations To illustrate,
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Page 295 and 296: General syntax and usage General sy
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Page 337 and 338: element ■ ■ ■ element The
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Page 341 and 342: element element The services eleme
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Page 347 and 348: EJB Container-level Properties Tabl
Page 349 and 350: EJB Customization Properties: Deplo
Page 351 and 352: Complete Index of EJB Properties Co
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Page 359 and 360: Java Session Service (JSS) Properti
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Page 363 and 364: Partition Transaction Service (Tran
Page 365 and 366: Borland-specific web DTD 33, 36 bra
Page 367 and 368: ejb.mdb.maxMessagesPerServerSession
Page 369 and 370: J J2EE VisiClient 97 VisiClient env
Page 371 and 372: optimistic concurrency 130 SelectFo
Page 373 and 374: Sonic clustered service 228 SonicMQ
Page 375: X XML DTD 99 VisiClient 98 grammar
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