As Java doesn't allow static methods on interfaces, allow HSSFFormulaEvaluator or XSSFFormulaEvaluator to generically recalculate all formulas in a workbook

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1101033 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 10 insertions, 0 deletions

diff --git a/src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java b/src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java
index 3d1076fdf5..adbb685ffb 100644
--- a/src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java
+++ b/src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java
@@ -57,6 +57,16 @@ public interface FormulaEvaluator {
     void notifyUpdateCell(Cell cell);
 
     /**
+    * Loops over all cells in all sheets of the associated workbook.
+    * For cells that contain formulas, their formulas are evaluated, 
+    *  and the results are saved. These cells remain as formula cells.
+    * For cells that do not contain formulas, no changes are made.
+    * This is a helpful wrapper around looping over all cells, and 
+    *  calling evaluateFormulaCell on each one.
+     */
+    void evaluateAll();
+    
+    /**
      * If cell contains a formula, the formula is evaluated and returned,
      * else the CellValue simply copies the appropriate cell value from
      * the cell and also its cell type. This method should be preferred over