org.xnap.commons.pkg
Class PackageManager

java.lang.Object
  org.xnap.commons.pkg.PackageManager

public class PackageManager
extends Object

Constructor Summary

PackageManager()

Method Summary

void	add(PackageInfo info) Adds a package.
PackageInfo[]	getConflicts(PackageInfo info)
String	getDefaultSources() Returns a list of urls.
PackageInfo[]	getDependencies(PackageInfo info)
PackageInfo	getPackage(String packageName) Returns a package by name.
int	getPackageCount() Returns the number of packages.
PackageInfo[]	getProviders(String packageName) Returns an array of packages that provide packageName.
void	markAllUnavailable() Marks all packages that are not installed as unavailable.
Iterator	packages() Returns an iterator over all PackageInfo objects.
void	read(File file)
void	read(File file, Properties table) Reads package information from a control file.
void	read(InputStream inStream, Properties flags) Reads package information from a stream.
void	read(String location, Properties table) Reads package information from a url.
void	remove(PackageInfo info)
void	removeUnavailable() Removes all packages that are marked as unavailable.
SortedSet	tailSet(String packageName)
void	write(File file, Properties flags)

Methods inherited from class java.lang.Object

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

Constructor Detail

PackageManager

public PackageManager()

Method Detail

add

public void add(PackageInfo info)

Adds a package. If info is not valid or a package with the same name and version already exists the package is not added.

getConflicts

public PackageInfo[] getConflicts(PackageInfo info)
                           throws ParseException

Throws:

ParseException

getDefaultSources

public String getDefaultSources()

Returns a list of urls.

Returns:

the empty string

getDependencies

public PackageInfo[] getDependencies(PackageInfo info)
                              throws ParseException,
                                     UnsatisfiedDependenciesException

Throws:

ParseException - thrown, if package file is invalid

UnsatisfiedDependenciesException - thrown, if dependencies are not satisfied

markAllUnavailable

public void markAllUnavailable()

Marks all packages that are not installed as unavailable. Marks all packages as not new.

read

public void read(File file,
                 Properties table)
          throws IOException

Reads package information from a control file.

Parameters:

file - the control file

Throws:

IOException

read

public void read(File file)
          throws IOException

Throws:

IOException

read

public void read(String location,
                 Properties table)
          throws IOException

Reads package information from a url.

Parameters:

location - the package file url

downloadUrl - the base location of the package files

Throws:

IOException

read

public void read(InputStream inStream,
                 Properties flags)
          throws IOException

Reads package information from a stream.

Parameters:

inStream - the stream

flags - additional flags that are added to the PackageInfo record; if null, flags are ignored

Throws:

IOException

remove

public void remove(PackageInfo info)

removeUnavailable

public void removeUnavailable()

Removes all packages that are marked as unavailable.

packages

public Iterator packages()

Returns an iterator over all PackageInfo objects.

getPackageCount

public int getPackageCount()

Returns the number of packages.

getPackage

public PackageInfo getPackage(String packageName)

Returns a package by name.

tailSet

public SortedSet tailSet(String packageName)

getProviders

public PackageInfo[] getProviders(String packageName)

Returns an array of packages that provide packageName.

write

public void write(File file,
                  Properties flags)
           throws IOException

Throws:

IOException