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1
21 package org.jacorb.collection;
22
23 import org.omg.CosCollection.OperationsOperations;
24 import org.omg.CORBA.Any  ;
25 import org.jacorb.collection.util.*;
26
27 class SequenceComparator implements ObjectComparator {
28 private OperationsOperations ops;
29 private Any current = null;
30
31 SequenceComparator( OperationsOperations ops ) {
32 this.ops = ops;
33 }
34
35 public synchronized int compare( Object obj1, Object obj2 ) throws ObjectInvalid {
36 if( obj1 == null || obj2 == null ){
37 throw new ObjectInvalid();
38 }
39 check_object( obj1 );
40 check_object( obj2 );
41 return ops.compare( (Any )obj1, (Any )obj2 );
42 }
43
44 public synchronized void element( Object obj ) throws ObjectInvalid {
45 check_object( obj );
46 current = (Any ) obj;
47 }
48
49 public synchronized Object element() {
50 return current;
51 }
52
53 public synchronized int compare_with( Object obj ) throws ObjectInvalid {
54 if( obj == null || current == null ) {
55 throw new ObjectInvalid();
56 }
57 check_object( obj );
58 return ops.compare( current, (Any )obj );
59 }
60
61 public synchronized boolean equal( Object obj1, Object obj2 ) throws ObjectInvalid {
62 if( obj1 == null || obj2 == null ){
63 throw new ObjectInvalid();
64 }
65 check_object( obj1 );
66 check_object( obj2 );
67 return ops.equal( (Any )obj1, (Any )obj2 );
68 }
69
70 public synchronized boolean equal( Object obj1 ) throws ObjectInvalid {
71 if( obj1 == null || current == null ) {
72 throw new ObjectInvalid();
73 }
74 check_object( obj1 );
75 return ops.equal( current, (Any )obj1 );
76 }
77
78 private void check_object( Object obj ) throws ObjectInvalid {
79 if( !( obj instanceof Any )
80 || !((Any )obj).type().equal( ops.element_type() ) ){
81 throw new ObjectInvalid();
82 }
83 }
84
85 }
86
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