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   * Copyright (c) OSGi Alliance (2001, 2013). All Rights Reserved.
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
 package org.osgi.service.metatype;
Description for the data type information of an objectclass.

$Id: f65f64dbce209cf7f7418be8c812cd2162ac7835 $
 public interface ObjectClassDefinition {
Argument for getAttributeDefinitions(int).

REQUIRED indicates that only the required definitions are returned. The value is 1.

 	public static final int	REQUIRED	= 1;
Argument for getAttributeDefinitions(int).

OPTIONAL indicates that only the optional definitions are returned. The value is 2.

 	public static final int	OPTIONAL	= 2;
Argument for getAttributeDefinitions(int).

ALL indicates that all the definitions are returned. The value is -1.

 	public static final int	ALL			= 0xFFFFFFFF;

Return the name of this object class. The name may be localized.

The name of this object class.
 	public String getName();

Return the id of this object class.

ObjectDefintion objects share a global namespace in the registry. They share this aspect with LDAP/X.500 attributes. In these standards the OSI Object Identifier (OID) is used to uniquely identify object classes. If such an OID exists, (which can be requested at several standard organisations and many companies already have a node in the tree) it can be returned here. Otherwise, a unique id should be returned which can be a java class name (reverse domain name) or generated with a GUID algorithm. Note that all LDAP defined object classes already have an OID associated. It is strongly advised to define the object classes from existing LDAP schemes which will give the OID for free. Many such schemes exist ranging from postal addresses to DHCP parameters.

The id of this object class.
 	public String getID();

Return a description of this object class. The description may be localized.

The description of this object class.
 	public String getDescription();

Return the attribute definitions for this object class.

Return a set of attributes. The filter parameter can distinguish between ALL,REQUIRED or the OPTIONAL attributes.

An array of attribute definitions or null if no attributes are selected
Return an InputStream object that can be used to create an icon from.

Indicate the size and return an InputStream object containing an icon. The returned icon maybe larger or smaller than the indicated size.

The icon may depend on the localization.

size Requested size of an icon, e.g. a 16x16 pixels icon then size = 16
An InputStream representing an icon or null
Throws: If the InputStream cannot be returned.
	public InputStream getIcon(int sizethrows IOException;
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