242 lines
8.4 KiB
Java

/*
* Copyright (C) 2006 Alfresco, Inc.
*
* Licensed under the Mozilla Public License version 1.1
* with a permitted attribution clause. You may obtain a
* copy of the License at
*
* http://www.alfresco.org/legal/license.txt
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific
* language governing permissions and limitations under the
* License.
*/
package org.alfresco.repo.avm;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* This is the service interface for the [Alfresco|Addled|Advanced|Apotheosed] Versioning
* Model. It specifies methods that are close in functionality to the underlying
* implementation, and is intended as both a first class Alfresco service and an
* aid in creating new implementations of existing services.
* Paths are of the form repositoryname:/foo/bar/baz
* @author britt
*/
public interface AVMService
{
/**
* Get an InputStream for a file node.
* @param version The version id to look in.
* @param path The simple absolute path to the file node.
* @return An InputStream for the designated file.
*/
public InputStream getFileInputStream(int version, String path);
/**
* Get an output stream to a file node. The file must already exist.
* @param path The simple absolute path to the file node.
*/
public OutputStream getFileOutputStream(String path);
/**
* Get a random access file to the given path.
* @param version The version to find.
* @param path The path to the file.
* @param access The access mode for RandomAccessFile.
* @return A RandomAccessFile
*/
public RandomAccessFile getRandomAccess(int version, String path, String access);
/**
* Get a listing of a Folder by name.
* @param version The version id to look in.
* @param path The simple absolute path to the file node.
* @return A List of FolderEntrys.
*/
public List<FolderEntry> getDirectoryListing(int version, String path);
/**
* Get a directory listing from a node descriptor.
* @param dir The directory node descriptor.
* @return A Map of names to node descriptors.
*/
public Map<String, AVMNodeDescriptor> getDirectoryListing(AVMNodeDescriptor dir);
/**
* Create a new File. Fails if the file already exists.
* @param path The simple absolute path to the parent.
* @param name The name to give the file.
* @param source A possibly null stream to draw initial contents from.
*/
public OutputStream createFile(String path, String name);
/**
* Create a new directory.
* @param parent The simple absolute path to the parent.
* @param name The name to give the folder.
*/
public void createDirectory(String path, String name);
/**
* Create a new layered file.
* @param srcPath The simple absolute path that the new file will point at.
* @param parent The simple absolute path to the parent.
* @param name The name to give the new file.
*/
public void createLayeredFile(String srcPath, String parent, String name);
/**
* Create a new layered directory.
* @param srcPath The simple absolute path that the new folder will point at.
* @param parent The simple absolute path to the parent.
* @param name The name to give the new folder.
*/
public void createLayeredDirectory(String srcPath, String parent, String name);
/**
* Retarget a layered directory.
* @param path Path to the layered directory.
* @param target The new target to aim at.
*/
public void retargetLayeredDirectory(String path, String target);
/**
* Create a new Repository. All Repositories are top level in a hierarchical
* sense.
* @param name The name to give the virtual repository.
*/
public void createRepository(String name);
/**
* Create a branch from a given version and path.
* @param version The version number from which to make the branch.
* @param srcPath The path to the node to branch from.
* @param dstPath The path to the directory to contain the
* new branch.
* @param name The name to give the new branch.
*/
public void createBranch(int version, String srcPath, String dstPath, String name);
/**
* Remove a child from its parent.
* @param parent The simple absolute path to the parent directory.
* @param name The name of the child to remove.
*/
public void removeNode(String parent, String name);
/**
* Rename a node.
* @param srcParent The simple absolute path to the parent folder.
* @param srcName The name of the node in the src Folder.
* @param dstParent The simple absolute path to the destination folder.
* @param dstName The name that the node will have in the destination folder.
*/
public void rename(String srcParent, String srcName, String dstParent, String dstName);
/**
* Uncover a name in a layered directory. That is, if the layered
* directory has a deleted entry of the given name remove that
* name from the deleted list.
* @param dirPath The path to the layered directory.
* @param name The name to uncover.
*/
public void uncover(String dirPath, String name);
/**
* Get the latest version id of the repository.
* @param repName The name of the repository.
* @return The latest version id of the repository.
*/
public int getLatestVersionID(String repName);
/**
* Snapshot the given repositories. When this is called everything that has been added,
* deleted, or modified since the last time this function was called, is marked
* as needing to be copied, so that further modifications will trigger copy on write
* semantics.
* @param repositories The names of the repositories to snapshot.
*/
public void createSnapshot(List<String> repositories);
/**
* Snapshot the given repository.
* @param repository The name of the repository to snapshot.
*/
public void createSnapshot(String repository);
/**
* Get the set of version IDs in a Repository
* @param name The name of the Repository.
* @return A Set of version IDs
*/
public Set<Integer> getRepositoryVersions(String name);
/**
* Get the names of all repositories.
* @return A List of all names.
*/
public List<String> getRepositoryNames();
/**
* Get the specified root of a repository.
* @param version The version to look up.
* @param name The name of the repository.
* @return A descriptor for the specified root.
*/
public AVMNodeDescriptor getRepositoryRoot(int version, String name);
/**
* Lookup a node by version ids and path.
* @param version The version id to look under.
* @param path The simple absolute path to the parent directory.
* @return An AVMNodeDescriptor.
*/
public AVMNodeDescriptor lookup(int version, String path);
/**
* Lookup a node from a directory node.
* @param dir The descriptor for the directory node.
* @param name The name to lookup.
* @return The descriptor for the child.
*/
public AVMNodeDescriptor lookup(AVMNodeDescriptor dir, String name);
/**
* Get the indirection path for a layered file or directory.
* @param version The version number to get.
* @param path The path to the node of interest.
* @return The indirection path.
*/
public String getIndirectionPath(int version, String path);
/**
* Purge a repository. This is a complete wipe of a Repository.
* @param name The name of the Repository.
*/
public void purgeRepository(String name);
/**
* Purge a version from a repository. Deletes everything that lives in
* the given version only.
* @param version The version to purge.
* @param name The name of the Repository from which to purge it.
*/
public void purgeVersion(int version, String name);
/**
* Make a directory into a primary indirection node.
* @param path The full path.
*/
public void makePrimary(String path);
}