TranscationControl hinzugefügt

.gitignore

+target/

nb-configuration.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project-shared-configuration>
+    <!--
+This file contains additional configuration written by modules in the NetBeans IDE.
+The configuration is intended to be shared among all the users of project and
+therefore it is assumed to be part of version control checkout.
+Without this configuration present, some functionality in the IDE may be limited or fail altogether.
+-->
+    <properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
+        <!--
+Properties that influence various parts of the IDE, especially code formatting and the like. 
+You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
+That way multiple projects can share the same settings (useful for formatting rules for example).
+Any value defined here will override the pom.xml file value but is only applicable to the current project.
+-->
+        <org-netbeans-modules-css-prep.less_2e_mappings>/less:/css</org-netbeans-modules-css-prep.less_2e_mappings>
+        <org-netbeans-modules-css-prep.less_2e_enabled>false</org-netbeans-modules-css-prep.less_2e_enabled>
+        <org-netbeans-modules-css-prep.sass_2e_enabled>false</org-netbeans-modules-css-prep.sass_2e_enabled>
+        <org-netbeans-modules-css-prep.sass_2e_compiler_2e_options/>
+        <org-netbeans-modules-css-prep.less_2e_compiler_2e_options/>
+        <org-netbeans-modules-css-prep.sass_2e_mappings>/scss:/css</org-netbeans-modules-css-prep.sass_2e_mappings>
+    </properties>
+</project-shared-configuration>

src/main/java/org/s4s/dao/impl/TransactionControl.java

+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.s4s.dao.impl;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import org.s4s.exceptions.DAOException;
+import org.s4s.exceptions.NoSuchUserOrPassword;
+import org.s4s.modell.dto.Product;
+import org.s4s.modell.dto.User;
+import java.sql.*;
+
+/**
+ *
+ * @author Sebastian
+ */
+public class TransactionControl extends AbstractDatabaseClass{
+   
+    User verkaeufer;
+    User kaeufer;
+    Product a;
+    
+    ResultSet rs;
+
+    public void createTransaction() throws DAOException{        
+        try
+        {               
+                rs = executeQuery("SELECT u.\"artikelid\""
+                    + " FROM \"ERR\".\"artikel\" u "
+                    + " WHERE u.artikelid = '" + a.getId() + "';");
+                                       
+        } catch (SQLException ex) 
+        {
+            throw new DAOException(ex);
+        }
+        
+           
+    }
+    
+    
+}