What is initial context factory?

What is initial context factory?

An initial context factory must implement the InitialContextFactory interface, which provides a method for creating instances of initial context that implement the Context interface. In addition, the factory class must be public and must have a public constructor that accepts no arguments.

How do you set initial context?

Configuring an Oracle Initial Context Factory

1. Define the java. naming.
2. Define the java. naming.
3. When you instantiate the initial context, pass the HashTable into the initial context constructor, as Example 19-23 shows.
4. Use the initial context to look up a JNDI-accessible resource:

Where should I put JNDI properties file?

Listing 4.1 A Sample jndi. If you are using Java 1.1 or earlier, JNDI will not search the system classpath for the jndi. properties resource file. However, you can put the application resource file in the /lib directory and have JNDI find the properties. You can have multiple jndi.

Which of the following is used to obtain the initial context?

environment – environment used to create the initial context.

Why JNDI is used in Java?

JNDI is an API specified in Java technology that provides naming and directory functionality to applications written in the Java programming language. It enables applications to access different, possibly multiple, naming and directory services using a common API.

What is JNDI in Java with examples?

The Java Naming and Directory Interface (JNDI) provides consistent use of naming and/or directory services as a Java API. This interface can be used for binding objects, looking up or querying objects, as well as detecting changes on the same objects.

How do I set datasource in Tomcat context XML?

This page tells you how to set up a SQL Server datasource connection for Confluence.

1. Shut down Tomcat. Run bin/shutdown.sh or bin/shutdown.
2. Install the SQL Server database driver. Download the SQL Server JDBC driver:
3. Configure Tomcat. Edit the conf/server.
4. Configure the Confluence web application.
5. Restart Tomcat.

What is WebLogic JNDI WLInitialContextFactory?

The WLInitialContextFactory creates initial contexts for accessing the WebLogic naming service. It can also be used to create a multitier connection to another naming service through a WebLogic Server. INITIAL_CONTEXT_FACTORY, “weblogic. jndi.

What is JNDI context?

It is an API to providing access to a directory service, that is, a service mapping name (strings) with objects, reference to remote objects or simple data. This is called binding. The set of bindings is called the context. Applications use the JNDI interface to access resources.

What is Java comp ENV?

java:comp/env is the node in the JNDI tree where you can find properties for the current Java EE component (a webapp, or an EJB). Context envContext = (Context)initContext.lookup(“java:comp/env”); allows defining a variable pointing directly to this node.

What is JNDI connection in Java?

It stands for Java Naming and Directory Interface. What is its basic use? JNDI allows distributed applications to look up services in an abstract, resource-independent way. When it is used? The most common use case is to set up a database connection pool on a Java EE application server.

What is difference between JNDI and JDBC?

Answer: JDBC is java database API, while JNDI is java native directory API. In short words: JDBC is a Database realm, JNDI lets you store Objects in a virtual context (the Directory) that can be local, remote (Implementation details usually don’t matters).

Which is the initial context factory in Java?

INITIAL_CONTEXT_FACTORY Value for the java.naming.factory.initialproperty. This property specifies which initial context factory to use when creating a new initial context object. PROVIDER_URL Value for the java.naming.provider.urlproperty. This property specifies the URL that the application client code uses to look up objects on the server.

Where do I find the properties file in Java?

An application resource file has the name jndi.properties. It contains a list of key/value pairs presented in the properties file format (see java.util.Properties). The key is the name of the property (for example, java.naming.factory.object) and the value is a string in the format defined for that property.

Where do I find the initial context in OC4J?

The environment that OC4J uses to construct a JNDI initial context can be found in three places: System property values, as set either by the OC4J server or possibly by the application container. A jndi.propertiesfile contained in the application EAR file (as part of application-client.jar).

Where is the jndi.propertiesfile file located in Java?

A jndi.propertiesfile contained in the application EAR file (as part of application-client.jar). An environment specified explicitly in a java.util.Hashtableinstance passed to the JNDI initial context constructor.