Include correct type and parameter info in exception (#19064)

Change-Id: I26baf26dae6d1ad8b93529191cc69ffc0445aa40

2 files changed, 15 insertions, 5 deletions

diff --git a/server/src/com/vaadin/data/util/sqlcontainer/query/generator/StatementHelper.java b/server/src/com/vaadin/data/util/sqlcontainer/query/generator/StatementHelper.java
index 379b319207..5a9fcb17c0 100644
--- a/server/src/com/vaadin/data/util/sqlcontainer/query/generator/StatementHelper.java
+++ b/server/src/com/vaadin/data/util/sqlcontainer/query/generator/StatementHelper.java
@@ -153,8 +153,8 @@ public class StatementHelper implements Serializable {
                 return;
             }
 
-            throw new SQLException("Data type not supported by SQLContainer: "
-                    + dataType.getClass().toString());
+            throw new SQLException("Data type for parameter " + i
+                    + " not supported by SQLContainer: " + dataType.getName());
         }
     }
 
diff --git a/server/tests/src/com/vaadin/data/util/sqlcontainer/generator/StatementHelperTest.java b/server/tests/src/com/vaadin/data/util/sqlcontainer/generator/StatementHelperTest.java
index f1eb365c45..b89b7e747d 100644
--- a/server/tests/src/com/vaadin/data/util/sqlcontainer/generator/StatementHelperTest.java
+++ b/server/tests/src/com/vaadin/data/util/sqlcontainer/generator/StatementHelperTest.java
@@ -19,6 +19,7 @@ import java.sql.PreparedStatement;
 import java.sql.SQLException;
 
 import org.easymock.EasyMock;
+import org.junit.Assert;
 import org.junit.Test;
 
 import com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper;
@@ -29,14 +30,23 @@ import com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper;
  */
 public class StatementHelperTest {
 
-    @Test(expected = SQLException.class)
+    @Test
     public void testSetValueNullParameter() throws SQLException {
         StatementHelper helper = new StatementHelper();
-        helper.addParameterValue(null, Object.class);
+        helper.addParameterValue(null, StatementHelper.class);
         PreparedStatement statement = EasyMock
                 .createMock(PreparedStatement.class);
         // should throw SQLException, not NPE
-        helper.setParameterValuesToStatement(statement);
+        try {
+            helper.setParameterValuesToStatement(statement);
+            Assert.fail("Expected SQLExecption for unsupported type");
+        } catch (SQLException e) {
+            // Exception should contain info about which parameter and the type
+            // which was unsupported
+            Assert.assertTrue(e.getMessage().contains("parameter 0"));
+            Assert.assertTrue(e.getMessage().contains(
+                    StatementHelper.class.getName()));
+        }
     }
 
     @Test