61 lines
2.3 KiB
Java
61 lines
2.3 KiB
Java
/* ====================================================================
|
|
Licensed to the Apache Software Foundation (ASF) under one or more
|
|
contributor license agreements. See the NOTICE file distributed with
|
|
this work for additional information regarding copyright ownership.
|
|
The ASF licenses this file to You under the Apache License, Version 2.0
|
|
(the "License"); you may not use this file except in compliance with
|
|
the License. You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
==================================================================== */
|
|
|
|
package org.apache.poi.ss.excelant.util;
|
|
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
|
|
/**
|
|
* This is a factory class maps file names to WorkbookUtil instances. This
|
|
* helps ExcelAnt be more efficient when being run many times in an Ant build.
|
|
*
|
|
* @author Jon Svede (jon [at] loquatic [dot] com)
|
|
* @author Brian Bush (brian [dot] bush [at] nrel [dot] gov)
|
|
*
|
|
*/
|
|
public final class ExcelAntWorkbookUtilFactory {
|
|
|
|
private static Map<String, ExcelAntWorkbookUtil> workbookUtilMap;
|
|
|
|
private ExcelAntWorkbookUtilFactory() {
|
|
}
|
|
|
|
/**
|
|
* Using the fileName, check the internal map to see if an instance
|
|
* of the WorkbookUtil exists. If not, then add an instance to the map.
|
|
*
|
|
* @param fileName The filename to use as key to look for the ExcelAntWorkbookUtil.
|
|
* @return An instance of ExcelAntWorkbookUtil associated with the filename or
|
|
* a freshly instantiated one if none did exist before.
|
|
*/
|
|
public static ExcelAntWorkbookUtil getInstance(String fileName) {
|
|
if(workbookUtilMap == null) {
|
|
workbookUtilMap = new HashMap<String, ExcelAntWorkbookUtil>();
|
|
}
|
|
|
|
if(workbookUtilMap.containsKey(fileName)) {
|
|
return workbookUtilMap.get(fileName);
|
|
}
|
|
|
|
ExcelAntWorkbookUtil wbu = new ExcelAntWorkbookUtil(fileName);
|
|
workbookUtilMap.put(fileName, wbu);
|
|
return wbu;
|
|
}
|
|
}
|