OpenJDK 27 · com.sun.jndi.dns.DnsContextFactory · APIdia, the JavaDoc alternative

A DnsContextFactory serves as the initial context factory for DNS.

When an initial context is being created, the environment property "java.naming.provider.url" should contain a DNS pseudo-URL (see DnsUrl) or a space-separated list of them. Multiple URLs must all have the same domain value. If the property is not set, the default "dns:" is used.

Field Summary

Modifier and Type	Field and Description
private static final int	DEFAULT_PORT
private static final String	DEFAULT_URL

Constructor Summary

Access	Constructor and Description
public	DnsContextFactory()

Method Summary

Modifier and Type	Method and Description
private static String	constructProviderUrl(String domain, String[] servers)
public static DnsContext	getContext(String domain, String[] servers, Hashtable<?, ?> env)
public static DnsContext	getContext(String domain, DnsUrl[] urls, Hashtable<?, ?> env)
private static String	getInitCtxUrl(Hashtable<?, ?> env)
public Context	getInitialContext(Hashtable<?, ?> env) Implements javax.naming.spi.InitialContextFactory.getInitialContext. Creates an Initial Context for beginning name resolution.
public static boolean	platformServersAvailable()
private static boolean	platformServersUsed(DnsUrl[] urls)
private static String[]	serversForUrls(DnsUrl[] urls)
private static Context	urlToContext(String url, Hashtable<?, ?> env)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

DEFAULT_PORT	back to summary
private static final int DEFAULT_PORT

DEFAULT_URL	back to summary
private static final String DEFAULT_URL

Constructor Detail

DnsContextFactory	back to summary
public DnsContextFactory()

Method Detail

constructProviderUrl	back to summary
private static String constructProviderUrl(String domain, String[] servers)

getContext	back to summary
public static DnsContext getContext(String domain, String[] servers, Hashtable<?, ?> env) throws NamingException

getContext	back to summary
public static DnsContext getContext(String domain, DnsUrl[] urls, Hashtable<?, ?> env) throws NamingException

getInitCtxUrl	back to summary
private static String getInitCtxUrl(Hashtable<?, ?> env)

getInitialContext back to summary

getInitialContext	back to summary
public Context getInitialContext(Hashtable<?, ?> env) throws NamingException Implements javax.naming.spi.InitialContextFactory.getInitialContext. Doc from javax.naming.spi.InitialContextFactory.getInitialContext. Creates an Initial Context for beginning name resolution. Special requirements of this context are supplied using `environment`. The environment parameter is owned by the caller. The implementation will not modify the object or keep a reference to it, although it may keep a reference to a clone or copy. Exceptions NamingException: If cannot create an initial context.

public Context getInitialContext(Hashtable<?, ?> env) throws NamingException

Implements javax.naming.spi.InitialContextFactory.getInitialContext.

Doc from javax.naming.spi.InitialContextFactory.getInitialContext.

Creates an Initial Context for beginning name resolution. Special requirements of this context are supplied using environment.

The environment parameter is owned by the caller. The implementation will not modify the object or keep a reference to it, although it may keep a reference to a clone or copy.

Exceptions

NamingException:: If cannot create an initial context.

platformServersAvailable	back to summary
public static boolean platformServersAvailable()

platformServersUsed	back to summary
private static boolean platformServersUsed(DnsUrl[] urls)

serversForUrls	back to summary
private static String[] serversForUrls(DnsUrl[] urls) throws NamingException