edu.sdsc.inca.repository
Class Repository

java.lang.Object
  edu.sdsc.inca.repository.Repository

public class Repository

extends java.lang.Object

The Repository class provides access to the contents of an Inca reporter repository--the catalog of Reporter packages and the packages themselves.

Field Summary

protected java.net.URL	baseUrl
protected java.util.Properties[]	catalog
static java.lang.String	CATALOG_NAME

Constructor Summary

Repository(java.net.URL baseURL)
Instantiates a repository accessed via a base URL.

Repository(java.net.URL baseURL, java.util.Properties[] catalog)
Instantiates a repository with a catalog generated elsewhere.

Method Summary

boolean	equals(java.lang.String repositoryUrl) Returns true if the given repository url matches this repository url.
boolean	exists(java.lang.String propertyName, java.lang.String value) Return whether a package exists in the repository with a given property name and value.
java.util.Properties[]	getCatalog() Returns information about the contents of the repository.
java.lang.String	getLatestVersionOfPackage(java.lang.String packageName) Return the latest version of the specified package that exists in this repository or null if it doesn't exist.
java.util.Properties	getProperties(java.lang.String name, java.lang.String version) Retrieve the repository properties for the specified package and version.
java.util.Properties[]	getPropertiesByLookup(java.lang.String property, java.lang.String value) Returns properties for all packages that match the given property name and value.
byte[]	getReporter(java.lang.String path) Returns the contents of a file located via a specified path in the repository.
ReporterPackage	getReporterPackage(java.lang.String path) Returns a binary package located via a specified path in the repository.
java.net.URL	getURL() Returns the base URL through which this Repository is accessed.
static void	main(java.lang.String[] args) The main for this class is a test program that lists the contents of one or more repositories listed on the command line.
void	refresh() Refresh the catalog contents by downloading the Packages.gz file and replacing the current contents.
java.lang.String	toString() Override of the default toString method.

Methods inherited from class java.lang.Object

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

Field Detail

CATALOG_NAME

public static final java.lang.String CATALOG_NAME

See Also:

Constant Field Values

baseUrl

protected java.net.URL baseUrl

catalog

protected java.util.Properties[] catalog

Constructor Detail

Repository

public Repository(java.net.URL baseURL)
           throws java.io.IOException

Instantiates a repository accessed via a base URL.

Parameters:

baseURL - the URL for the repository

Throws:

java.io.IOException - if the repository does not exist or has no catalog

Repository

public Repository(java.net.URL baseURL,
                  java.util.Properties[] catalog)

Instantiates a repository with a catalog generated elsewhere.

Parameters:

baseURL - the URL for the repository

catalog - an array of Properties, each element of which describes one reporter/package in the repository

Method Detail

equals

public boolean equals(java.lang.String repositoryUrl)

Returns true if the given repository url matches this repository url. This function will return true for file urls that match either file: or file:// formats.

Parameters:

repositoryUrl - A url that we are comparing to this repository.

Returns:

True if the given url matches the repository url and false otherwise.

exists

public boolean exists(java.lang.String propertyName,
                      java.lang.String value)

Return whether a package exists in the repository with a given property name and value.

Parameters:

propertyName - Name of the reporter package property.

value - Value we expect the property to equal

Returns:

true if a package exists in the repository with the given property else false.

getCatalog

public java.util.Properties[] getCatalog()

Returns information about the contents of the repository.

Returns:

an array of Properties, each element of which describes one reporter/package

getLatestVersionOfPackage

public java.lang.String getLatestVersionOfPackage(java.lang.String packageName)

Return the latest version of the specified package that exists in this repository or null if it doesn't exist.

Parameters:

packageName - The name of the package we are looking for.

Returns:

The latest version of the specified package or null if it does not exist.

getProperties

public java.util.Properties getProperties(java.lang.String name,
                                          java.lang.String version)

Retrieve the repository properties for the specified package and version.

Parameters:

name - The name of the package to retrieve properties on.

version - The version of the package to retrieve properties on.

Returns:

The properties of the specified package and version retrieved from the repository catalog.

getPropertiesByLookup

public java.util.Properties[] getPropertiesByLookup(java.lang.String property,
                                                    java.lang.String value)

Returns properties for all packages that match the given property name and value.

Parameters:

property - Name of the reporter package property.

value - Value we expect the property to equal.

Returns:

List of properties from packages that match the given property.

getReporter

public byte[] getReporter(java.lang.String path)
                   throws java.io.IOException

Returns the contents of a file located via a specified path in the repository.

Parameters:

path - the relative path to the file

Returns:

the file contents

Throws:

java.io.IOException

getReporterPackage

public ReporterPackage getReporterPackage(java.lang.String path)
                                   throws java.io.IOException

Returns a binary package located via a specified path in the repository.

Parameters:

path - the relative path to the package file

Returns:

the package contents

Throws:

java.io.IOException

getURL

public java.net.URL getURL()

Returns the base URL through which this Repository is accessed.

Returns:

the repository base URL

refresh

public void refresh()
             throws java.io.IOException

Refresh the catalog contents by downloading the Packages.gz file and replacing the current contents.

Throws:

java.io.IOException - if the repository does not exist or has no catalog

toString

public java.lang.String toString()

Override of the default toString method.

main

public static void main(java.lang.String[] args)

The main for this class is a test program that lists the contents of one or more repositories listed on the command line.