Introduce POIXMLDocument as common base class for all OOXML document types.

git-svn-id: https://svn.apache.org/repos/asf/poi/branches/ooxml@618319 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/POIXMLDocument.java

@@ -0,0 +1,65 @@
+/* ====================================================================
+   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;
+
+import java.io.IOException;
+
+import org.openxml4j.exceptions.InvalidFormatException;
+import org.openxml4j.exceptions.OpenXML4JException;
+import org.openxml4j.opc.Package;
+import org.openxml4j.opc.PackagePart;
+import org.openxml4j.opc.PackageRelationship;
+import org.openxml4j.opc.PackageRelationshipTypes;
+
+
+public abstract class POIXMLDocument {
+
+    public static final String CORE_PROPERTIES_REL_TYPE = "http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties";
+    
+    public static final String EXTENDED_PROPERTIES_REL_TYPE = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties";
+    
+    /** The OPC Package */
+    private Package pkg;
+
+    /** The OPC core Package Part */
+    private PackagePart corePart;
+    
+    protected POIXMLDocument() {}
+    
+    protected POIXMLDocument(String path) throws IOException {
+        try {
+            this.pkg = Package.open(path);
+            PackageRelationship coreDocRelationship = this.pkg.getRelationshipsByType(
+                    PackageRelationshipTypes.CORE_DOCUMENT).getRelationship(0);
+        
+            // Get core part
+            this.corePart = this.pkg.getPart(coreDocRelationship);
+        } catch (InvalidFormatException e) {
+            throw new IOException(e.toString());
+        } catch (OpenXML4JException e) {
+            throw new IOException(e.toString());
+        }
+    }
+    
+    protected Package getPackage() {
+        return this.pkg;
+    }
+    
+    protected PackagePart getCorePart() {
+        return this.corePart;
+    }
+}

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFWorkbook.java

@@ -17,7 +17,6 @@
 
 package org.apache.poi.xssf.usermodel;
 
-import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.LinkedList;
@@ -25,6 +24,7 @@ import java.util.List;
 
 import javax.xml.namespace.QName;
 
+import org.apache.poi.POIXMLDocument;
 import org.apache.poi.ss.usermodel.CellStyle;
 import org.apache.poi.ss.usermodel.DataFormat;
 import org.apache.poi.ss.usermodel.Font;
@@ -36,11 +36,9 @@ import org.apache.xmlbeans.XmlException;
 import org.apache.xmlbeans.XmlObject;
 import org.apache.xmlbeans.XmlOptions;
 import org.openxml4j.exceptions.InvalidFormatException;
-import org.openxml4j.exceptions.OpenXML4JException;
 import org.openxml4j.opc.Package;
 import org.openxml4j.opc.PackagePart;
 import org.openxml4j.opc.PackagePartName;
-import org.openxml4j.opc.PackageRelationship;
 import org.openxml4j.opc.PackageRelationshipTypes;
 import org.openxml4j.opc.PackagingURIHelper;
 import org.openxml4j.opc.TargetMode;
@@ -52,14 +50,11 @@ import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorksheet;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.WorkbookDocument;
 
 
-public class XSSFWorkbook implements Workbook {
+public class XSSFWorkbook extends POIXMLDocument implements Workbook {
 
     private CTWorkbook workbook;
     
     private List<XSSFSheet> sheets = new LinkedList<XSSFSheet>();
-    
-    /** The OPC Package */
-    private Package pkg;
 
     public XSSFWorkbook() {
         this.workbook = CTWorkbook.Factory.newInstance();
@@ -70,20 +65,10 @@ public class XSSFWorkbook implements Workbook {
     }
     
     public XSSFWorkbook(String path) throws IOException {
+        super(path);
         try {
-            this.pkg = Package.open(path);
-            PackageRelationship coreDocRelationship = this.pkg.getRelationshipsByType(
-                    PackageRelationshipTypes.CORE_DOCUMENT).getRelationship(0);
-        
-            // Get core part
-            PackagePart corePart = this.pkg.getPart(coreDocRelationship);
-            WorkbookDocument doc = WorkbookDocument.Factory.parse(corePart.getInputStream());
+            WorkbookDocument doc = WorkbookDocument.Factory.parse(getCorePart().getInputStream());
             this.workbook = doc.getWorkbook();
-            
-        } catch (InvalidFormatException e) {
-            throw new IOException(e.toString());
-        } catch (OpenXML4JException e) {
-            throw new IOException(e.toString());
         } catch (XmlException e) {
             throw new IOException(e.toString());
         }