Package org.osgi.resource

Interface Requirement

All Known Subinterfaces:
BundleRequirement
All Known Implementing Classes:
BundleRequirementImpl, WrappedRequirement
@ConsumerType 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.

Author:
$Id: 252221aeaaf9b189eef6e0c3798d0076a0032242 $

  • Method Details

    • 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.