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1
46 package org.bsf.remoteIterator.client;
47
48 import org.bsf.remoteIterator.common.RemoteIteratorResultTable;
49 import org.bsf.remoteIterator.server.RemoteIterator;
50
51 import javax.ejb.RemoveException  ;
52 import java.io.Serializable ;
53 import java.rmi.RemoteException ;
54 import java.util.Iterator ;
55 import java.util.List ;
56
57
63 public class RemoteIteratorClient implements Serializable {
64
68 private boolean _isLast = false;
69 private boolean _isFirst = true;
70
71
74 private int _rowCount = -1;
75
76 private RemoteIterator _remote = null;
77
78
82 public RemoteIteratorClient( RemoteIterator p_remoteIteratorProxy ) throws IllegalArgumentException {
83 _remote = p_remoteIteratorProxy;
84 }
85
86
90 public synchronized Iterator absolute( int p_position ) throws RemoteException {
91 if ( _remote == null ) return null;
92 return getResult( _remote.absolute( p_position ) ).iterator();
93 }
94
95 public synchronized Iterator absolute( int p_position, int p_nbRecords ) throws RemoteException {
96 if ( _remote == null ) return null;
97 return getResult( _remote.absolute( p_position, p_nbRecords ) ).iterator();
98 }
99
103 public synchronized Iterator next() throws RemoteException {
104 if ( _remote == null ) return null;
105 return getResult( _remote.next() ).iterator();
106 }
107
108 public synchronized Iterator next( int p_nbRecords ) throws RemoteException {
109 if ( _remote == null ) return null;
110 return getResult( _remote.next( p_nbRecords ) ).iterator();
111 }
112
113
117 public synchronized Iterator previous() throws RemoteException {
118 if ( _remote == null ) return null;
119 return getResult( _remote.previous() ).iterator();
120 }
121
122 public synchronized Iterator previous( int p_nbRecords ) throws RemoteException {
123 if ( _remote == null ) return null;
124 return getResult( _remote.previous( p_nbRecords ) ).iterator();
125 }
126
127
131 private synchronized List getResult( RemoteIteratorResultTable p_riResult ) {
132 _isLast = p_riResult.isLast();
133 _isFirst = p_riResult.isFirst();
134
135 return p_riResult.getRows();
136 }
137
138
143 public synchronized void remove() throws RemoteException {
144 try {
145 if ( _remote != null ) {
146 _remote.remove();
148 }
149 } catch( RemoveException e ) {
150 throw new RemoteException ( e.getLocalizedMessage() );
151 } finally {
152 _remote = null;
154 }
155 }
156
157
164 public synchronized boolean hasRemoteReference() {
165 if ( _remote != null ) {
166 return true;
167 }
168
169 return false;
170 }
171
172
176
179 public synchronized List getColumnMetatData() throws RemoteException {
180 if ( _remote == null ) {
181 return null;
182 }
183
184 return _remote.getColumnMetaData();
185 }
186
187
191 public synchronized int getRecordCount() throws RemoteException {
192 if ( _rowCount == -1 && _remote != null ) {
193 _rowCount = _remote.getRowCount().intValue();
195 }
196
197 return _rowCount;
198 }
199
200 public synchronized boolean isLast() {
201 return _isLast;
202 }
203
204 public synchronized boolean isFirst() {
205 return _isFirst;
206 }
207 }
208
209
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