User defined functions with source code didn't work after re-opening the database.

h2/src/main/org/h2/engine/FunctionAlias.java

@@ -23,6 +23,7 @@ import org.h2.util.ClassUtils;
 import org.h2.util.ObjectArray;
 import org.h2.util.SourceCompiler;
 import org.h2.util.StatementBuilder;
+import org.h2.util.StringUtils;
 import org.h2.value.DataType;
 import org.h2.value.Value;
 import org.h2.value.ValueNull;
@@ -185,7 +186,11 @@ public class FunctionAlias extends DbObjectBase {
         if (deterministic) {
             buff.append(" DETERMINISTIC");
         }
+        if (source != null) {
+            buff.append(" AS ").append(StringUtils.quoteStringSQL(source));
+        } else {
             buff.append(" FOR ").append(Parser.quoteIdentifier(className + "." + methodName));
+        }
         return buff.toString();
     }
 
@@ -412,4 +417,8 @@ public class FunctionAlias extends DbObjectBase {
         return deterministic;
     }
 
+    public String getSource() {
+        return source;
+    }
+
 }

h2/src/test/org/h2/test/db/TestFunctions.java

@@ -65,10 +65,18 @@ public class TestFunctions extends TestBase implements AggregateFunction {
         Connection conn = getConnection("functions");
         Statement stat = conn.createStatement();
         ResultSet rs;
-        stat.execute("create force alias sayHi as 'String test(String name) { return \"Hello \" + name; }'");
+        stat.execute("create force alias sayHi as 'String test(String name) {\nreturn \"Hello \" + name;\n}'");
         rs = stat.executeQuery("call sayHi('Joe')");
         rs.next();
         assertEquals("Hello Joe", rs.getString(1));
+        if (!config.memory) {
+            conn.close();
+            conn = getConnection("functions");
+            stat = conn.createStatement();
+            rs = stat.executeQuery("call sayHi('Joe')");
+            rs.next();
+            assertEquals("Hello Joe", rs.getString(1));
+        }
         stat.execute("drop alias sayHi");
         conn.close();
     }