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Configuring your Apache web server to invoke a CORBA server For example: ClusterList=cluster1,cluster2,cluster3 cluster1.webcontainer_id = tc_inst1 cluster2.webcontainer_id = corbaloc::127.20.20.2:20202,:127.20.20.3:20202/ tc_inst2 cluster2.enable_loadbalancing = true Note Note cluster3.webcontainer_id = tc_inst3 cluster3.enable_loadbalancing = false In the above example, the following three clusters are defined: 1 The first, uses the osagent naming scheme and is enabled for load balancing. 2 The second cluster employs the corbaloc naming scheme, and is also enabled for load balancing. 3 The third uses the osagent naming scheme, but has the load balancing features disabled. To disable use of a particular cluster, simply remove the cluster name from the ClusterList list. However, we recommend you do not remove clusters with active http sessions attached to the CORBA server (attached users), because requests to these “live” sessions will fail. Modifications you make to the WebClusters.properties file automatically take effect on the next request. You do not need to restart your server(s). Mapping URIs to defined clusters Once the cluster entry is defined, all that remains is to identify which HTTP requests received by the web server need to be forwarded to your CORBA server. Use the UriMapFile.properties file to map http uri strings to web cluster names (CORBA instances) configured in the WebClusters.properties file. ■ In the UriMapFile.properties file, type: = where is a standard URI string or a wild-card string, and is the cluster name as it appears in the ClusterList entry in the WebClusters.properties file. For example: /examples = cluster1 /examples/* = cluster1 Note /petstore/index.jsp = cluster2 /petstore/servlet/* = cluster2 In this example: ■ ■ Any URI that starts with /examples will be forwarded to a CORBA server running in the “cluster1” web cluster. URIs matching either /petstore/index.jsp or starting with /petstore/servlet will be routed to “cluster2”. With the URI mappings, the wild-card “*” is only valid in the last term of the URI and may represent the follow cases: ■ ■ the whole term (and all inferior references) as in /examples/*. the filename part of a file specification as in /examples/*.jsp. Chapter 8: Apache web server to CORBA server connectivity 71
Configuring your Apache web server to invoke a CORBA server Note Modifications you make to the UriMapFile.properties file automatically take effect on the next request. You do not need to restart your server(s). If the WebCluster.properties or UriMapFile.properties is altered, then it is automatically loaded by the IIOP connector. This means that modifications to either of these files can be done so without starting up or shutting down the web server(s) or CORBA server(s). 72 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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Creating Partitions Creating Partit
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Running Partitions Table 3.1 Option
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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 in Bo
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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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Other Considerations } } { cf = new
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General syntax and usage General sy
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Syntax and usage for iastool Table
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Syntax and usage for java2iiop Exam
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Syntax and usage for appclient Tabl
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Building and running the BES exampl
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Using the iastool command-line tool
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element ■ ■ ■ element The
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element The Partition statistics ag
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element element The services eleme
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element element The archive elemen
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EJB Container-level Properties Tabl
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EJB Container-level Properties Tabl
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EJB Customization Properties: Deplo
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Complete Index of EJB Properties Co
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Complete Index of EJB Properties Ta
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Java Session Service (JSS) Properti
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Java Session Service (JSS) Properti
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Partition Transaction Service (Tran
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Borland-specific web DTD 33, 36 bra
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ejb.mdb.maxMessagesPerServerSession
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J J2EE VisiClient 97 VisiClient env
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optimistic concurrency 130 SelectFo
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Sonic clustered service 228 SonicMQ
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X XML DTD 99 VisiClient 98 grammar
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