org.osgi.resource

Interface Requirement

All Known Subinterfaces:

BundleRequirement

All Known Implementing Classes:

BundleRequirementImpl, WrappedRequirement

public interface Requirement

A requirement that has been declared from a Resource .

Instances of this type must be effectively immutable. That is, for a given instance of this interface, the methods defined by this interface must always return the same result.

Version:

$Id: 212b26179910f98fd2c59c3e1e7dd0d086f42b5d $

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj) Compares this Requirement to another Requirement.
Map<String,Object>	getAttributes() Returns the attributes of this requirement.
Map<String,String>	getDirectives() Returns the directives of this requirement.
String	getNamespace() Returns the namespace of this requirement.
Resource	getResource() Returns the resource declaring this requirement.
int	hashCode() Returns the hashCode of this Requirement.

Method Detail

getNamespace

String getNamespace()

Returns the namespace of this requirement.

Returns:

The namespace of this requirement.

getDirectives

Map<String,String> getDirectives()

Returns the directives of this requirement.

Returns:

An unmodifiable map of directive names to directive values for this requirement, or an empty map if this requirement has no directives.

getAttributes

Map<String,Object> getAttributes()

Returns the attributes of this requirement.

Requirement attributes have no specified semantics and are considered extra user defined information.

Returns:

An unmodifiable map of attribute names to attribute values for this requirement, or an empty map if this requirement has no attributes.

getResource

Resource getResource()

Returns the resource declaring this requirement.

Returns:

The resource declaring this requirement. This can be null if this requirement is synthesized.

equals

boolean equals(Object obj)

Compares this Requirement to another Requirement.

This Requirement is equal to another Requirement if they have the same namespace, directives and attributes and are declared by the same resource.

Overrides:

equals in class Object

Parameters:

obj - The object to compare against this Requirement.

Returns:

true if this Requirement is equal to the other object; false otherwise.

hashCode

int hashCode()

Returns the hashCode of this Requirement.

Overrides:

hashCode in class Object

Returns:

The hashCode of this Requirement.