reducer = new GraphReducerImpl(factory);
builder = new GraphBuilder();
builder.rootBuilder = reducer.addProcessor(
new SingleVertexProcessor<Object>());
builder.selectCustomerBuilder = reducer.addProcessor(
new SelectCustomerProcessor(dataSource), 50);
builder.selectProductBuilder = reducer.addProcessor(
new SelectProductProcessor(dataSource), 50);
builder.insertOrderBuilder = reducer.addProcessor(
new InsertOrderProcessor(updateDataSource), 50);