org.fcrepo.server.storage
Class DirectoryBasedRepositoryReader

java.lang.Object
  org.fcrepo.server.storage.DirectoryBasedRepositoryReader

All Implemented Interfaces:

RepositoryReader

public class DirectoryBasedRepositoryReader
extends Object
implements RepositoryReader

A RepositoryReader that uses a directory of serialized objects as its working repository.

All files in the directory must be digital object serializations, and none may have the same PID. This is verified upon construction.

Note: This implementation does not recognize when files are added to the directory. What is in the directory at construction-time is what is assumed to be the extent of the repository for the life of the object.

Author:

Chris Wilper

Constructor Summary

DirectoryBasedRepositoryReader(File directory, DOTranslator translator, String exportFormat, String storageFormat, String encoding)
Initializes the RepositoryReader by looking at all files in the provided directory and ensuring that they're all serialized digital objects and that there are no PID conflicts.

Method Summary

DOReader	getReader(boolean UseCachedObject, Context context, String pid) Gets a digital object reader.
ServiceDefinitionReader	getServiceDefinitionReader(boolean UseCachedObject, Context context, String pid)
ServiceDeploymentReader	getServiceDeploymentReader(boolean UseCachedObject, Context context, String pid)
String[]	listObjectPIDs(Context context) Gets a list of PIDs (accessible in the given context) of all objects in the repository.

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectoryBasedRepositoryReader

public DirectoryBasedRepositoryReader(File directory,
                                      DOTranslator translator,
                                      String exportFormat,
                                      String storageFormat,
                                      String encoding)
                               throws StorageDeviceException,
                                      ObjectIntegrityException,
                                      StreamIOException,
                                      UnsupportedTranslationException,
                                      ServerException

Initializes the RepositoryReader by looking at all files in the provided directory and ensuring that they're all serialized digital objects and that there are no PID conflicts.

Parameters:

directory - the directory where this repository is based.

translator - the serialization/deserialization engine for objects.

exportFormat - the format to use for export requests.

storageFormat - the format of the objects on disk.

encoding - The character encoding used across all formats.

Throws:

StorageDeviceException

ObjectIntegrityException

StreamIOException

UnsupportedTranslationException

ServerException

Method Detail

getReader

public DOReader getReader(boolean UseCachedObject,
                          Context context,
                          String pid)
                   throws ObjectIntegrityException,
                          ObjectNotFoundException,
                          StreamIOException,
                          UnsupportedTranslationException,
                          ServerException

Description copied from interface: RepositoryReader

Gets a digital object reader.

Specified by:

getReader in interface RepositoryReader

context - The context of this request.

pid - The PID of the object.

Returns:

A reader.

Throws:

ServerException - If anything went wrong.

ObjectIntegrityException

ObjectNotFoundException

StreamIOException

UnsupportedTranslationException

getServiceDeploymentReader

public ServiceDeploymentReader getServiceDeploymentReader(boolean UseCachedObject,
                                                          Context context,
                                                          String pid)
                                                   throws ObjectIntegrityException,
                                                          ObjectNotFoundException,
                                                          StreamIOException,
                                                          UnsupportedTranslationException,
                                                          ServerException

Specified by:

getServiceDeploymentReader in interface RepositoryReader

Throws:

ObjectIntegrityException

ObjectNotFoundException

StreamIOException

UnsupportedTranslationException

ServerException

getServiceDefinitionReader

public ServiceDefinitionReader getServiceDefinitionReader(boolean UseCachedObject,
                                                          Context context,
                                                          String pid)
                                                   throws ObjectIntegrityException,
                                                          ObjectNotFoundException,
                                                          StreamIOException,
                                                          UnsupportedTranslationException,
                                                          ServerException

Specified by:

getServiceDefinitionReader in interface RepositoryReader

Throws:

ObjectIntegrityException

ObjectNotFoundException

StreamIOException

UnsupportedTranslationException

ServerException

listObjectPIDs

public String[] listObjectPIDs(Context context)

Description copied from interface: RepositoryReader

Gets a list of PIDs (accessible in the given context) of all objects in the repository.

Specified by:

listObjectPIDs in interface RepositoryReader