1 files changed, 38 insertions, 0 deletions
diff --git a/server/src/com/vaadin/data/util/sqlcontainer/OptimisticLockException.java b/server/src/com/vaadin/data/util/sqlcontainer/OptimisticLockException.java
new file mode 100644
index 0000000000..adfd439ac8
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+++ b/server/src/com/vaadin/data/util/sqlcontainer/OptimisticLockException.java
@@ -0,0 +1,38 @@
+/*
+@VaadinApache2LicenseForJavaFiles@
+ */
+package com.vaadin.data.util.sqlcontainer;
+
+import com.vaadin.data.util.sqlcontainer.query.TableQuery;
+
+/**
+ * An OptimisticLockException is thrown when trying to update or delete a row
+ * that has been changed since last read from the database.
+ * 
+ * OptimisticLockException is a runtime exception because optimistic locking is
+ * turned off by default, and as such will never be thrown in a default
+ * configuration. In order to turn on optimistic locking, you need to specify
+ * the version column in your TableQuery instance.
+ * 
+ * @see TableQuery#setVersionColumn(String)
+ * 
+ * @author Jonatan Kronqvist / Vaadin Ltd
+ */
+public class OptimisticLockException extends RuntimeException {
+
+    private final RowId rowId;
+
+    public OptimisticLockException(RowId rowId) {
+        super();
+        this.rowId = rowId;
+    }
+
+    public OptimisticLockException(String msg, RowId rowId) {
+        super(msg);
+        this.rowId = rowId;
+    }
+
+    public RowId getRowId() {
+        return rowId;
+    }
+}