Added a comment to the builder class

src/main/java/org/zapodot/junit/db/EmbeddedDatabaseRule.java

@@ -21,6 +21,9 @@
  */
 public class EmbeddedDatabaseRule implements TestRule {
 
+    /**
+     * A builder class that provides a fluent api for building DB rules
+     */
     public static class Builder {
 
         private Map<String, String> properties = new LinkedHashMap<>();
@@ -119,7 +122,7 @@ public Connection getConnection() {
      * @return a DataSource instance wrapping a single connection
      */
     public DataSource getDataSource() {
-        return new EmbeddedDataSource(getConnection());
+        return EmbeddedDataSource.create(getConnection());
     }
 
     public boolean isAutoCommit() {

src/main/java/org/zapodot/junit/db/internal/EmbeddedDataSource.java

@@ -1,7 +1,5 @@
 package org.zapodot.junit.db.internal;
 
-import org.zapodot.junit.db.internal.CloseSuppressedConnectionFactory;
-
 import javax.sql.DataSource;
 import java.io.PrintWriter;
 import java.sql.Connection;
@@ -16,10 +14,14 @@ public class EmbeddedDataSource implements DataSource {
 
     private final Connection connection;
 
-    public EmbeddedDataSource(final Connection connection) {
+    private EmbeddedDataSource(final Connection connection) {
         this.connection = connection;
     }
 
+    public static EmbeddedDataSource create(final Connection connection) {
+        return new EmbeddedDataSource(connection);
+    }
+
     @Override
     public Connection getConnection() throws SQLException {
         return CloseSuppressedConnectionFactory.createProxy(connection);