From 1c0fc92c719f3856653d0efcc5fe4a1fa30b7bac Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 9 Jun 2013 23:22:39 +0200
Subject: wip

---
 .../java/io/trygvis/async/SqlEffectExecutor.java   | 58 +++++++---------------
 1 file changed, 18 insertions(+), 40 deletions(-)

(limited to 'src/main/java/io/trygvis/async/SqlEffectExecutor.java')

diff --git a/src/main/java/io/trygvis/async/SqlEffectExecutor.java b/src/main/java/io/trygvis/async/SqlEffectExecutor.java
index e03cf5e..51ad31d 100644
--- a/src/main/java/io/trygvis/async/SqlEffectExecutor.java
+++ b/src/main/java/io/trygvis/async/SqlEffectExecutor.java
@@ -2,7 +2,9 @@ package io.trygvis.async;
 
 import javax.sql.DataSource;
 import java.sql.Connection;
+import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Statement;
 
 public class SqlEffectExecutor {
 
@@ -12,41 +14,13 @@ public class SqlEffectExecutor {
         this.dataSource = dataSource;
     }
 
-    public <A> A transaction(SqlEffect<A> effect) {
-/*
+    public <A> A transaction(SqlEffect<A> effect) throws SQLException {
         int pid;
 
         try (Connection c = dataSource.getConnection()) {
-
-            try (Statement statement = c.createStatement()) {
-                ResultSet rs = statement.executeQuery("SELECT pg_backend_pid()");
-                rs.next();
-                pid = rs.getInt(1);
-            }
-
+            pid = getPid(c);
             System.out.println("pid = " + pid);
 
-            try {
-                effect.doInConnection(c);
-                c.commit();
-            } catch (SQLException e) {
-                c.rollback();
-                e.printStackTrace();
-            } finally {
-                System.out.println("Closing pid=" + pid);
-                try {
-                    c.close();
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
-            }
-        } catch (SQLException e) {
-            e.printStackTrace();
-            throw new SqlExecutionException(e);
-        }
-*/
-
-        try (Connection c = dataSource.getConnection()) {
             boolean ok = false;
             try {
                 A a = effect.doInConnection(c);
@@ -54,16 +28,19 @@ public class SqlEffectExecutor {
                 ok = true;
                 return a;
             } finally {
+                System.out.println("Closing, pid = " + pid);
                 if (!ok) {
-                    c.rollback();
+                    try {
+                        c.rollback();
+                    } catch (SQLException e) {
+                        // ignore
+                    }
                 }
             }
-        } catch (SQLException e) {
-            throw new SqlExecutionException(e);
         }
     }
 
-    public void transaction(final SqlEffect.Void effect) {
+    public void transaction(final SqlEffect.Void effect) throws SQLException {
         transaction(new SqlEffect<Object>() {
             @Override
             public Object doInConnection(Connection c) throws SQLException {
@@ -73,12 +50,13 @@ public class SqlEffectExecutor {
         });
     }
 
-    public static class SqlExecutionException extends RuntimeException {
-        public final SQLException exception;
-
-        public SqlExecutionException(SQLException ex) {
-            super(ex);
-            this.exception = ex;
+    private int getPid(Connection c) throws SQLException {
+        int pid;
+        try (Statement statement = c.createStatement()) {
+            ResultSet rs = statement.executeQuery("SELECT pg_backend_pid()");
+            rs.next();
+            pid = rs.getInt(1);
         }
+        return pid;
     }
 }
-- 
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