01: package org.drools.util;
02:
03: /*
04: * Copyright 2005 JBoss Inc
05: *
06: * Licensed under the Apache License, Version 2.0 (the "License");
07: * you may not use this file except in compliance with the License.
08: * You may obtain a copy of the License at
09: *
10: * http://www.apache.org/licenses/LICENSE-2.0
11: *
12: * Unless required by applicable law or agreed to in writing, software
13: * distributed under the License is distributed on an "AS IS" BASIS,
14: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15: * See the License for the specific language governing permissions and
16: * limitations under the License.
17: */
18:
19: import java.io.Serializable;
20:
21: /**
22: * Items placed in a <code>LinkedList<code> must implement this interface .
23: *
24: * @see LinkedList
25: *
26: * @author <a href="mailto:mark.proctor@jboss.com">Mark Proctor</a>
27: * @author <a href="mailto:bob@werken.com">Bob McWhirter</a>
28: */
29: public interface LinkedListNode extends Serializable {
30:
31: /**
32: * Returns the next node
33: * @return
34: * The next LinkedListNode
35: */
36: public LinkedListNode getNext();
37:
38: /**
39: * Sets the next node
40: * @param next
41: * The next LinkedListNode
42: */
43: public void setNext(LinkedListNode next);
44:
45: /**
46: * Returns the previous node
47: * @return
48: * The previous LinkedListNode
49: */
50: public LinkedListNode getPrevious();
51:
52: /**
53: * Sets the previous node
54: * @param previous
55: * The previous LinkedListNode
56: */
57: public void setPrevious(LinkedListNode previous);
58:
59: }
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