changed the interface of on_primary_key to have a third parameter of type primary_key_attribute

source/core/utils/primary_key_attribute.cpp

@@ -2,14 +2,31 @@
 
 namespace matador::utils {
 primary_key_attribute::primary_key_attribute(const size_t size)
-: size_(size) {}
+: size_( size ) {}
+
+primary_key_attribute::primary_key_attribute(const generator_type generator)
+: generator_( generator ) {}
+
+primary_key_attribute::primary_key_attribute(const size_t size, const generator_type generator)
+: size_( size )
+, generator_( generator ) {}
 
 primary_key_attribute& primary_key_attribute::operator=(const size_t size) {
-    size_ = size;
-    return *this;
+  size_ = size;
+  return *this;
+}
+
+primary_key_attribute& primary_key_attribute::operator=(const generator_type generator) {
+  generator_ = generator;
+  return *this;
 }
 
 size_t primary_key_attribute::size() const {
-    return size_;
+  return size_;
 }
+
+generator_type primary_key_attribute::generator() const {
+  return generator_;
+}
+
 }