org.apache.jackrabbit.vault.packaging.registry

Interface PackageRegistry

public interface PackageRegistry

The package registry is the next generation PackageManager and JcrPackageManager. It defines storage independent methods to register (upload), enumerate and remove packages. The installation lifecycle of the packages is provided via ExecutionPlans.

Method Summary

Modifier and Type	Method and Description
DependencyReport	analyzeDependencies(PackageId id, boolean onlyInstalled) Creates a dependency report that lists the resolved and unresolved dependencies.
boolean	contains(PackageId id) Checks if this registry contains the package with the given id.
ExecutionPlanBuilder	createExecutionPlan() Creates a new execution plan builder.
RegisteredPackage	open(PackageId id) Opens the package with the given id.
java.util.Set<PackageId>	packages() Returns as set of all packages registered in this registry.
PackageId	register(java.io.File file, boolean replace) Registers a package provided via a file.
PackageId	register(java.io.InputStream in, boolean replace) Registers a package provided via an input stream.
PackageId	registerExternal(java.io.File file, boolean replace) Registers a package provided via an external file.
void	remove(PackageId id) Removes the package from this registry.
PackageId	resolve(Dependency dependency, boolean onlyInstalled) Tries to resolve the given dependency and returns the id of the package that matches the dependency filter best.
PackageId[]	usage(PackageId id) Returns the package ids of installed packages that depend on the given package.

Method Detail

contains

boolean contains(PackageId id)
          throws java.io.IOException

Checks if this registry contains the package with the given id.

Parameters:

id - the package id.

Returns:

true if the package is registered.

Throws:

java.io.IOException - if an I/O error occurrs.

packages

java.util.Set<PackageId> packages()
                           throws java.io.IOException

Returns as set of all packages registered in this registry.

Returns:

a set of package ids.

Throws:

java.io.IOException - if an I/O error occurrs.

open

RegisteredPackage open(PackageId id)
                throws java.io.IOException

Opens the package with the given id.

Parameters:

id - the package id

Returns:

the package or null if it does not exists.

Throws:

java.io.IOException - if an I/O error occurrs.

register

PackageId register(java.io.InputStream in,
                   boolean replace)
            throws java.io.IOException,
                   PackageExistsException

Registers a package provided via an input stream. The method fails, if a package with the same id already exists, and replace is set to false. otherwise the existing package is replaced.

Parameters:

in - the input stream to the package data

replace - true if existing package should be replaced.

Returns:

the new package id.

Throws:

java.io.IOException - if an I/O error occurrs.

PackageExistsException - if the package exists and replace is false.

register

PackageId register(java.io.File file,
                   boolean replace)
            throws java.io.IOException,
                   PackageExistsException

Registers a package provided via a file. The method fails, if a package with the same id already exists, and replace is set to false; otherwise the existing package is replaced.

Parameters:

file - the file to the package data

replace - true if existing package should be replaced.

Returns:

the new package id.

Throws:

java.io.IOException - if an I/O error occurrs.

PackageExistsException - if the package exists and replace is false.

registerExternal

PackageId registerExternal(java.io.File file,
                           boolean replace)
                    throws java.io.IOException,
                           PackageExistsException

Registers a package provided via an external file. The binary data of the package will not be copied into the underlying persistence but only be referenced. Removing such a linked package afterwards will not delete the original file. The method fails, if a package with the same id already exists, and replace is set to false; otherwise the existing package is replaced.

Parameters:

file - the file to the package data.

replace - true if existing package should be replaced.

Returns:

the new package id.

Throws:

java.io.IOException - if an I/O error occurrs.

PackageExistsException - if the package exists and replace is false.

remove

void remove(PackageId id)
     throws java.io.IOException,
            NoSuchPackageException

Removes the package from this registry.

Parameters:

id - the id of the package to remove

Throws:

java.io.IOException - if an I/O error occurrs.

NoSuchPackageException - if the package does not exist

analyzeDependencies

DependencyReport analyzeDependencies(PackageId id,
                                     boolean onlyInstalled)
                              throws java.io.IOException,
                                     NoSuchPackageException

Creates a dependency report that lists the resolved and unresolved dependencies.

Parameters:

id - the package id.

onlyInstalled - if true only installed packages are used for resolution

Returns:

the report

Throws:

java.io.IOException - if an error accessing the repository occurrs

NoSuchPackageException - if the package with the given id does not exist.

resolve

PackageId resolve(Dependency dependency,
                  boolean onlyInstalled)
           throws java.io.IOException

Tries to resolve the given dependency and returns the id of the package that matches the dependency filter best.

Parameters:

dependency - the dependency to resolve against.

onlyInstalled - if true only installed packages are respected.

Returns:

the package id or null

Throws:

java.io.IOException - if an I/O error occurrs.

usage

PackageId[] usage(PackageId id)
           throws java.io.IOException

Returns the package ids of installed packages that depend on the given package.

Parameters:

id - the package id to search for

Returns:

the array of package ids.

Throws:

java.io.IOException - if an I/O error occurs.

createExecutionPlan

ExecutionPlanBuilder createExecutionPlan()

Creates a new execution plan builder. The builder allows to create an execution plan for package installation related tasks.

Returns:

a new builder