ConfigurationSpi (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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javax.security.auth.login
Class ConfigurationSpi

java.lang.Object
  javax.security.auth.login.ConfigurationSpi

public abstract class ConfigurationSpi
extends Object
extends Object

This class defines the Service Provider Interface (SPI) for the Configuration class. All the abstract methods in this class must be implemented by each service provider who wishes to supply a Configuration implementation.

Subclass implementations of this abstract class must provide a public constructor that takes a Configuration.Parameters object as an input parameter. This constructor also must throw an IllegalArgumentException if it does not understand the Configuration.Parameters input.

Since:: 1.6

Constructor Summary

ConfigurationSpi()


Method Summary

protected abstract AppConfigurationEntry[] engineGetAppConfigurationEntry(String name)
          Retrieve the AppConfigurationEntries for the specified name.

protected void engineRefresh()
          Refresh and reload the Configuration.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Summary
`ConfigurationSpi()`

Method Summary
`protected abstract AppConfigurationEntry[]`	`engineGetAppConfigurationEntry(String name)` Retrieve the AppConfigurationEntries for the specified name.
`protected void`	`engineRefresh()` Refresh and reload the Configuration.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

ConfigurationSpi

public ConfigurationSpi()

Method Detail

engineGetAppConfigurationEntry

protected abstract AppConfigurationEntry[] engineGetAppConfigurationEntry(String name)

Retrieve the AppConfigurationEntries for the specified name.

Parameters:: name - the name used to index the Configuration.
Returns:: an array of AppConfigurationEntries for the specified name, or null if there are no entries.

engineRefresh

protected void engineRefresh()

Refresh and reload the Configuration.

This method causes this Configuration object to refresh/reload its contents in an implementation-dependent manner. For example, if this Configuration object stores its entries in a file, calling refresh may cause the file to be re-read.

The default implementation of this method does nothing. This method should be overridden if a refresh operation is supported by the implementation.

Throws:: SecurityException - if the caller does not have permission to refresh its Configuration.