org.jfree.report.modules.preferences.base
Class NullConfigStorage

java.lang.Object
  org.jfree.report.modules.preferences.base.NullConfigStorage

All Implemented Interfaces:

ConfigStorage

public class NullConfigStorage
extends java.lang.Object
implements ConfigStorage

An empty default implementation. This config storare will not store any values and will provide no read access to stored properties by denying their existence.

Author:

Thomas Morgner

Constructor Summary

NullConfigStorage()
DefaultConstructor.

Method Summary

boolean	isAvailable(java.lang.String configPath) Tests, whether some configuration data exists for the given configuration.
org.pentaho.reporting.libraries.base.config.Configuration	load(java.lang.String configPath, org.pentaho.reporting.libraries.base.config.Configuration defaults) Loads the properties from the given path, specifying the given properties as default.
void	store(java.lang.String configPath, org.pentaho.reporting.libraries.base.config.Configuration properties) This method does nothing.

Methods inherited from class java.lang.Object

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

Constructor Detail

NullConfigStorage

public NullConfigStorage()

DefaultConstructor.

Method Detail

store

public void store(java.lang.String configPath,
                  org.pentaho.reporting.libraries.base.config.Configuration properties)

This method does nothing.

Specified by:

store in interface ConfigStorage

Parameters:

configPath - this parameter is not used.

properties - this parameter is not used.

See Also:

(java.lang.String, java.util.Properties)

load

public org.pentaho.reporting.libraries.base.config.Configuration load(java.lang.String configPath,
                                                                      org.pentaho.reporting.libraries.base.config.Configuration defaults)
                                                               throws ConfigStoreException

Loads the properties from the given path, specifying the given properties as default.

This implementation will always throw and ConfigStoreException as the specified resource is not available.

Specified by:

load in interface ConfigStorage

Parameters:

configPath - the configuration path from where to read the properties.

defaults - the property set that acts as fallback to provide default values.

Returns:

the loaded properties

Throws:

ConfigStoreException - always throws this exception as the specified resource will be not available.

isAvailable

public boolean isAvailable(java.lang.String configPath)

Tests, whether some configuration data exists for the given configuration.

This method returns always false and denies the existence of any resource.

Specified by:

isAvailable in interface ConfigStorage

Parameters:

configPath - the configuration path to the property storage.

Returns:

always false as this implementation does not store anything.