From e83fa08f54be4c601d3125372bf760d8f49a3870 Mon Sep 17 00:00:00 2001
From: bernd <rbernd@gmail.com>
Date: Wed, 14 Nov 2012 21:24:31 +0100
Subject: [PATCH 17/25] Add example on how to use the exception translator
 mechanism to use the Spring exception hierarchy.

---
 .../spring/SpringEoDSQLExceptionTranslator.java    | 58 ++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 eodsql/docs/documentation/examples/net/lemnik/eodsql/spring/SpringEoDSQLExceptionTranslator.java

diff --git a/eodsql/docs/documentation/examples/net/lemnik/eodsql/spring/SpringEoDSQLExceptionTranslator.java b/eodsql/docs/documentation/examples/net/lemnik/eodsql/spring/SpringEoDSQLExceptionTranslator.java
new file mode 100644
index 0000000..7692469
--- /dev/null
+++ b/eodsql/docs/documentation/examples/net/lemnik/eodsql/spring/SpringEoDSQLExceptionTranslator.java
@@ -0,0 +1,58 @@
+package net.lemnik.eodsql.spring;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+
+import net.lemnik.eodsql.EoDException;
+import net.lemnik.eodsql.impl.ExceptionTranslationUtils;
+import net.lemnik.eodsql.impl.ExceptionTranslator;
+
+import org.springframework.dao.IncorrectResultSizeDataAccessException;
+import org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator;
+import org.springframework.jdbc.support.SQLExceptionTranslator;
+
+/**
+ * An {@link ExceptionTranslator} that uses the {@link SQLExceptionTranslator} underneath.
+ * 
+ * @author Bernd Rinn
+ */
+public class SpringEoDSQLExceptionTranslator implements ExceptionTranslator
+{
+    /**
+     * Enables the translation of SQL Exceptions to their (unchecked) Spring pendants rather than
+     * the generic {@link EoDException}.
+     */
+    public static void activate()
+    {
+        ExceptionTranslationUtils.setExceptionTranslator(new SpringEoDSQLExceptionTranslator());
+    }
+
+    public RuntimeException translateException(DataSource dataSource, String task, String sql,
+            SQLException ex)
+    {
+        return new SQLErrorCodeSQLExceptionTranslator(dataSource).translate(task, sql, ex);
+    }
+
+    public RuntimeException translateException(Connection connection, String task, String sql,
+            SQLException ex)
+    {
+        try
+        {
+            final String databaseProductName = connection.getMetaData().getDatabaseProductName();
+            return new SQLErrorCodeSQLExceptionTranslator(databaseProductName).translate(task, sql,
+                    ex);
+        } catch (SQLException ex1)
+        {
+            return new SQLErrorCodeSQLExceptionTranslator().translate(task, sql, ex);
+        }
+    }
+
+    public RuntimeException uniqueResultExpected()
+    {
+        return new IncorrectResultSizeDataAccessException(
+                "A unique result was expected but the database returned multiple rows.", 1);
+    }
+
+}
+
-- 
1.8.0