org.pentaho.reporting.libraries.docbundle.bundleloader

Class RepositoryResourceBundleLoader

java.lang.Object

org.pentaho.reporting.libraries.docbundle.bundleloader.RepositoryResourceBundleLoader

All Implemented Interfaces:

ResourceBundleLoader

public class RepositoryResourceBundleLoader
extends Object
implements ResourceBundleLoader

A internal resource-bundle loader that handles all requests for loading resources from the current repository.

Author:

Thomas Morgner

Field Summary

Fields

Modifier and Type	Field and Description
static String	SCHEMA

Constructor Summary

Constructors

Constructor and Description
RepositoryResourceBundleLoader(Repository repository, ResourceKey outsideContextKey)

Method Summary

Modifier and Type	Method and Description
ResourceKey	deriveKey(ResourceKey parent, String path, Map<? extends ParameterKey,? extends Object> factoryKeys) Derives a new resource key from the given key.
ResourceKey	deserialize(ResourceKey bundleKey, String stringKey) Creates a ResourceKey based off the String representation of the key.
boolean	equals(Object o)
ResourceKey	getMainKey()
int	hashCode()
boolean	isSupportedDeserializer(String data)
boolean	isSupportedKey(ResourceKey key) Checks, whether this resource loader implementation was responsible for creating this key.
ResourceBundleData	loadBundle(ResourceManager resourceManager, ResourceKey key) Tries to load the bundle.
String	serialize(ResourceKey bundleKey, ResourceKey key) Serializes the resource key to a String representation which can be recreated using the deserialize(ResourceKey) method.

Methods inherited from class java.lang.Object

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

Field Detail

SCHEMA

public static final String SCHEMA

Constructor Detail

RepositoryResourceBundleLoader

public RepositoryResourceBundleLoader(Repository repository,
                                      ResourceKey outsideContextKey)

Method Detail

loadBundle

public ResourceBundleData loadBundle(ResourceManager resourceManager,
                                     ResourceKey key)
                              throws ResourceLoadingException

Tries to load the bundle. If the key does not point to a usable resource-bundle, this method returns null. The Exception is only thrown if the bundle is not readable because of IO-Errors.

A resource-bundle loader should only load the bundle for the key itself, never for any of the derived subkeys. It is the ResourceManager's responsibility to search the key's hierachy for the correct key.

Specified by:

loadBundle in interface ResourceBundleLoader

Parameters:

key - the resource key pointing to the bundle.

Returns:

the loaded bundle or null, if the resource was not understood.

Throws:

ResourceLoadingException - if something goes wrong.

getMainKey

public ResourceKey getMainKey()

isSupportedKey

public boolean isSupportedKey(ResourceKey key)

Checks, whether this resource loader implementation was responsible for creating this key.

Specified by:

isSupportedKey in interface ResourceBundleLoader

Parameters:

key - the key that should be tested.

Returns:

true, if the key is supported.

deriveKey

public ResourceKey deriveKey(ResourceKey parent,
                             String path,
                             Map<? extends ParameterKey,? extends Object> factoryKeys)
                      throws ResourceKeyCreationException

Derives a new resource key from the given key. If neither a path nor new factory-keys are given, the parent key is returned.

Specified by:

deriveKey in interface ResourceBundleLoader

Parameters:

parent - the parent

path - the derived path (can be null).

factoryKeys - the optional factory keys (can be null).

Returns:

the derived key.

Throws:

ResourceKeyCreationException - if the key cannot be derived for any reason.

serialize

public String serialize(ResourceKey bundleKey,
                        ResourceKey key)
                 throws ResourceException

Serializes the resource key to a String representation which can be recreated using the deserialize(ResourceKey) method.

Specified by:

serialize in interface ResourceBundleLoader

Parameters:

bundleKey -

key -

Returns:

a String which is a serialized version of the ResourceKey

Throws:

ResourceException - indicates an error serializing the resource key

deserialize

public ResourceKey deserialize(ResourceKey bundleKey,
                               String stringKey)
                        throws ResourceKeyCreationException

Creates a ResourceKey based off the String representation of the key. The String should have been created using the serialize method.

Specified by:

deserialize in interface ResourceBundleLoader

Parameters:

bundleKey -

stringKey - the String representation of the ResourceKey @return a ResourceKey which matches the String representation

Throws:

ResourceKeyCreationException - indicates an error occurred in the creation or deserialization of the ResourceKey

isSupportedDeserializer

public boolean isSupportedDeserializer(String data)
                                throws ResourceKeyCreationException

Specified by:

isSupportedDeserializer in interface ResourceBundleLoader

Throws:

ResourceKeyCreationException

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object