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1
61
62
63 package org.jaxen.util;
64
65 import java.util.ArrayList  ;
66 import java.util.Iterator ;
67 import java.util.List ;
68 import java.util.NoSuchElementException ;
69
70 public class LinkedIterator implements Iterator
71 {
72 private List iterators;
73 private int cur;
74
75 public LinkedIterator()
76 {
77 this.iterators = new ArrayList ();
78 this.cur = 0;
79 }
80
81 public void addIterator(Iterator i)
82 {
83 this.iterators.add( i );
84 }
85
86 public boolean hasNext()
87 {
88 boolean has = false;
89
90 if ( this.cur < this.iterators.size() )
91 {
92 has = ((Iterator )this.iterators.get( this.cur )).hasNext();
93
94 if ( ! has
95 &&
96 this.cur < this.iterators.size() )
97 {
98 ++this.cur;
99 has = hasNext();
100 }
101 }
102 else
103 {
104 has = false;
105 }
106
107 return has;
108 }
109
110 public Object next()
111 {
112 if ( ! hasNext() )
113 {
114 throw new NoSuchElementException ();
115 }
116
117 return ((Iterator )this.iterators.get( this.cur )).next();
118 }
119
120 public void remove()
121 {
122 throw new UnsupportedOperationException ();
123 }
124 }
125 |
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