add @Override annotations to CreationHelper classes

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1753017 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/usermodel/HSSFCreationHelper.java

@@ -19,30 +19,37 @@ package org.apache.poi.hssf.usermodel;
 
 import org.apache.poi.hssf.record.common.ExtendedColor;
 import org.apache.poi.ss.usermodel.CreationHelper;
+import org.apache.poi.util.Internal;
 
 public class HSSFCreationHelper implements CreationHelper {
-    private HSSFWorkbook workbook;
+    private final HSSFWorkbook workbook;
-    private HSSFDataFormat dataFormat;
 
-    HSSFCreationHelper(HSSFWorkbook wb) {
+    /**
+     * Should only be called by {@link HSSFWorkbook#getCreationHelper()}
+     *
+     * @param wb the workbook to create objects for
+     */
+    @Internal(since="3.15 beta 3")
+    /*package*/ HSSFCreationHelper(HSSFWorkbook wb) {
         workbook = wb;
-
-        // Create the things we only ever need one of
-        dataFormat = new HSSFDataFormat(workbook.getWorkbook());
     }
 
+    @Override
     public HSSFRichTextString createRichTextString(String text) {
         return new HSSFRichTextString(text);
     }
 
+    @Override
     public HSSFDataFormat createDataFormat() {
-        return dataFormat;
+        return workbook.createDataFormat();
     }
 
+    @Override
     public HSSFHyperlink createHyperlink(int type) {
         return new HSSFHyperlink(type);
     }
 
+    @Override
     public HSSFExtendedColor createExtendedColor() {
         return new HSSFExtendedColor(new ExtendedColor());
     }
@@ -52,6 +59,7 @@ public class HSSFCreationHelper implements CreationHelper {
      *
      * @return a HSSFFormulaEvaluator instance
      */
+    @Override
     public HSSFFormulaEvaluator createFormulaEvaluator(){
         return new HSSFFormulaEvaluator(workbook);
     }
@@ -62,6 +70,7 @@ public class HSSFCreationHelper implements CreationHelper {
      * @return a HSSFClientAnchor instance
      * @see org.apache.poi.ss.usermodel.Drawing
      */
+    @Override
     public HSSFClientAnchor createClientAnchor(){
         return new HSSFClientAnchor();
     }

src/java/org/apache/poi/ss/usermodel/CreationHelper.java

@@ -58,5 +58,11 @@ public interface CreationHelper {
      */
     ExtendedColor createExtendedColor();
 
+    /**
+     * Creates a ClientAnchor. Use this object to position drawing object in a sheet
+     *
+     * @return a ClientAnchor instance
+     * @see org.apache.poi.ss.usermodel.Drawing
+     */
     ClientAnchor createClientAnchor();
 }

src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFCreationHelper.java

@@ -22,6 +22,7 @@ import org.apache.poi.ss.usermodel.CreationHelper;
 import org.apache.poi.ss.usermodel.DataFormat;
 import org.apache.poi.ss.usermodel.ExtendedColor;
 import org.apache.poi.ss.usermodel.Hyperlink;
+import org.apache.poi.util.Internal;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
 import org.apache.poi.xssf.usermodel.XSSFCreationHelper;
@@ -33,35 +34,47 @@ import org.apache.poi.xssf.usermodel.XSSFRichTextString;
  *  regular XSSF Workbook
  */
 public class SXSSFCreationHelper implements CreationHelper {
-    private static POILogger logger = POILogFactory.getLogger(SXSSFCreationHelper.class);
+    private static final POILogger logger = POILogFactory.getLogger(SXSSFCreationHelper.class);
     
-    private SXSSFWorkbook wb;
+    private final SXSSFWorkbook wb;
-    private XSSFCreationHelper helper;
+    private final XSSFCreationHelper helper;
     
+    /**
+     * Should only be called by {@link SXSSFWorkbook#getCreationHelper()}
+     *
+     * @param workbook the workbook to create objects for
+     */
+    @Internal
     public SXSSFCreationHelper(SXSSFWorkbook workbook) {
         this.helper = new XSSFCreationHelper(workbook.getXSSFWorkbook());
         this.wb = workbook;
     }
 
+    @Override
     public XSSFRichTextString createRichTextString(String text) {
         logger.log(POILogger.INFO, "SXSSF doesn't support Rich Text Strings, any formatting information will be lost");
         return new XSSFRichTextString(text);
     }
 
+    @Override
     public SXSSFFormulaEvaluator createFormulaEvaluator() {
         return new SXSSFFormulaEvaluator(wb);
     }
 
     // Pass-through methods
+    @Override
     public DataFormat createDataFormat() {
         return helper.createDataFormat();
     }
+    @Override
     public Hyperlink createHyperlink(int type) {
         return helper.createHyperlink(type);
     }
+    @Override
     public ExtendedColor createExtendedColor() {
         return helper.createExtendedColor();
     }
+    @Override
     public ClientAnchor createClientAnchor() {
         return helper.createClientAnchor();
     }

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

@@ -21,8 +21,13 @@ import org.apache.poi.ss.usermodel.Hyperlink;
 import org.apache.poi.util.Internal;
 
 public class XSSFCreationHelper implements CreationHelper {
-    private XSSFWorkbook workbook;
+    private final XSSFWorkbook workbook;
 
+    /**
+     * Should only be called by {@link XSSFWorkbook#getCreationHelper()}
+     *
+     * @param wb the workbook to create objects for
+     */
     @Internal
     public XSSFCreationHelper(XSSFWorkbook wb) {
         workbook = wb;
@@ -31,16 +36,19 @@ public class XSSFCreationHelper implements CreationHelper {
     /**
      * Creates a new XSSFRichTextString for you.
      */
+    @Override
     public XSSFRichTextString createRichTextString(String text) {
         XSSFRichTextString rt = new XSSFRichTextString(text);
         rt.setStylesTableReference(workbook.getStylesSource());
         return rt;
     }
 
+    @Override
     public XSSFDataFormat createDataFormat() {
         return workbook.createDataFormat();
     }
 
+    @Override
     public XSSFColor createExtendedColor() {
         return new XSSFColor();
     }
@@ -50,6 +58,7 @@ public class XSSFCreationHelper implements CreationHelper {
      *
      * @param type - the type of hyperlink to create, see {@link Hyperlink}
      */
+    @Override
     public XSSFHyperlink createHyperlink(int type) {
         return new XSSFHyperlink(type);
     }
@@ -59,6 +68,7 @@ public class XSSFCreationHelper implements CreationHelper {
      *
      * @return a XSSFFormulaEvaluator instance
      */
+    @Override
     public XSSFFormulaEvaluator createFormulaEvaluator() {
         return new XSSFFormulaEvaluator(workbook);
     }
@@ -70,6 +80,7 @@ public class XSSFCreationHelper implements CreationHelper {
      * @return a XSSFClientAnchor instance
      * @see org.apache.poi.ss.usermodel.Drawing
      */
+    @Override
     public XSSFClientAnchor createClientAnchor() {
         return new XSSFClientAnchor();
     }