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- /* ====================================================================
- 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;
-
-
- /**
- * 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 class ExcelAntWorkbookUtilFactory {
-
- private static HashMap<String, ExcelAntWorkbookUtil> workbookUtilMap ;
-
- private static ExcelAntWorkbookUtilFactory factory ;
-
- private ExcelAntWorkbookUtilFactory() {
- workbookUtilMap = new HashMap<String, ExcelAntWorkbookUtil>() ;
- }
-
- /**
- * 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
- * @return
- */
- public static ExcelAntWorkbookUtil getInstance( String fileName ) {
-
- if( factory == null ) {
- factory = new ExcelAntWorkbookUtilFactory() ;
- }
- if( workbookUtilMap != null &&
- workbookUtilMap.containsKey( fileName ) ) {
- return workbookUtilMap.get( fileName ) ;
- } else {
- ExcelAntWorkbookUtil wbu = new ExcelAntWorkbookUtil( fileName ) ;
- workbookUtilMap.put( fileName, wbu ) ;
- return wbu ;
- }
- }
-
- }
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