001    /*
002     * Copyright 2002-2004 the original author or authors.
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005     * use this file except in compliance with the License. You may obtain a copy of
006     * the License at
007     * 
008     * http://www.apache.org/licenses/LICENSE-2.0
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013     * License for the specific language governing permissions and limitations under
014     * the License.
015     */
016    package org.springframework.richclient.table;
017    
018    import java.util.ArrayList;
019    import java.util.List;
020    
021    public class TableDataProvider {
022        private List currentTableData = new ArrayList();
023    
024        private List lastTableData = new ArrayList();
025    
026        public TableDataProvider() {
027        }
028    
029        public synchronized void put(Object datum) {
030            currentTableData.add(datum);
031        }
032    
033        /**
034         * Returns the current set of changes to be published. This changes the List
035         * that changes are added to. It is assumed consumers will have cleared out
036         * the List when done with it.
037         */
038        public synchronized List takeData() {
039            List list = currentTableData;
040            currentTableData = lastTableData;
041            return list;
042        }
043    }