org.jboss.gravia.resource.spi

Class AbstractRequirement

java.lang.Object

org.jboss.gravia.resource.spi.AbstractRequirement

All Implemented Interfaces:

Adaptable, Requirement

Direct Known Subclasses:

DefaultRequirement

public class AbstractRequirement
extends Object
implements Requirement

The abstract implementation of a Requirement.

Since:

02-Jul-2010

Author:

thomas.diesler@jboss.com

Constructor Summary

Constructors

Constructor and Description
AbstractRequirement(AbstractResource resource, String namespace, Map<String,Object> atts, Map<String,String> dirs)

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	adapt(Class<T> type) Adapt the this type to the given type
Object	getAttribute(String key) Get the value of the given attribute
Map<String,Object>	getAttributes() Returns the attributes of this requirement.
String	getDirective(String key) Get the value of the given directive
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.
static VersionRange	getVersionRange(Requirement req, String attr)
boolean	isOptional() A flag indicating that this is an optional requirement.
String	toString()
protected void	validate()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRequirement

public AbstractRequirement(AbstractResource resource,
                   String namespace,
                   Map<String,Object> atts,
                   Map<String,String> dirs)

Method Detail

adapt

public <T> T adapt(Class<T> type)

Description copied from interface: Adaptable

Adapt the this type to the given type

Specified by:

adapt in interface Adaptable

getResource

public Resource getResource()

Description copied from interface: Requirement

Returns the resource declaring this requirement.

Specified by:

getResource in interface Requirement

Returns:

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

getNamespace

public String getNamespace()

Description copied from interface: Requirement

Returns the namespace of this requirement.

Specified by:

getNamespace in interface Requirement

Returns:

The namespace of this requirement.

isOptional

public boolean isOptional()

Description copied from interface: Requirement

A flag indicating that this is an optional requirement.

Specified by:

isOptional in interface Requirement

getDirectives

public Map<String,String> getDirectives()

Description copied from interface: Requirement

Returns the directives of this requirement.

Specified by:

getDirectives in interface Requirement

Returns:

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

getDirective

public String getDirective(String key)

Description copied from interface: Requirement

Get the value of the given directive

Specified by:

getDirective in interface Requirement

Returns:

null if no such directive is associated with this requirement

getAttributes

public Map<String,Object> getAttributes()

Description copied from interface: Requirement

Returns the attributes of this requirement.

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

Specified by:

getAttributes in interface Requirement

Returns:

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

getAttribute

public Object getAttribute(String key)

Description copied from interface: Requirement

Get the value of the given attribute

Specified by:

getAttribute in interface Requirement

Returns:

null if no such attribute is associated with this requirement

getVersionRange

public static VersionRange getVersionRange(Requirement req,
                           String attr)

validate

protected void validate()

toString

public String toString()

Overrides:

toString in class Object