[C++ server] Adjust the names (script, sample folder, generator) to lang option (#250)

* Renamce C++ server scripts

* Change output folder

* Rename sample folder: pistache-server -> cpp-pistache

* Rename sample folder: restbed -> cpp-restbed

samples/server/petstore/cpp-pistache/model/Order.cpp

@@ -0,0 +1,219 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* OpenAPI spec version: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Order.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Order::Order()
+{
+    m_Id = 0L;
+    m_IdIsSet = false;
+    m_PetId = 0L;
+    m_PetIdIsSet = false;
+    m_Quantity = 0;
+    m_QuantityIsSet = false;
+    m_ShipDate = "";
+    m_ShipDateIsSet = false;
+    m_Status = "";
+    m_StatusIsSet = false;
+    m_Complete = false;
+    m_CompleteIsSet = false;
+    
+}
+
+Order::~Order()
+{
+}
+
+void Order::validate()
+{
+    // TODO: implement validation
+}
+
+nlohmann::json Order::toJson() const
+{
+    nlohmann::json val = nlohmann::json::object();
+
+    if(m_IdIsSet)
+    {
+        val["id"] = m_Id;
+    }
+    if(m_PetIdIsSet)
+    {
+        val["petId"] = m_PetId;
+    }
+    if(m_QuantityIsSet)
+    {
+        val["quantity"] = m_Quantity;
+    }
+    if(m_ShipDateIsSet)
+    {
+        val["shipDate"] = ModelBase::toJson(m_ShipDate);
+    }
+    if(m_StatusIsSet)
+    {
+        val["status"] = ModelBase::toJson(m_Status);
+    }
+    if(m_CompleteIsSet)
+    {
+        val["complete"] = m_Complete;
+    }
+    
+
+    return val;
+}
+
+void Order::fromJson(nlohmann::json& val)
+{
+    if(val.find("id") != val.end())
+    {
+        setId(val.at("id"));
+    }
+    if(val.find("petId") != val.end())
+    {
+        setPetId(val.at("petId"));
+    }
+    if(val.find("quantity") != val.end())
+    {
+        setQuantity(val.at("quantity"));
+    }
+    if(val.find("shipDate") != val.end())
+    {
+        setShipDate(val.at("shipDate"));
+        
+    }
+    if(val.find("status") != val.end())
+    {
+        setStatus(val.at("status"));
+        
+    }
+    if(val.find("complete") != val.end())
+    {
+        setComplete(val.at("complete"));
+    }
+    
+}
+
+
+int64_t Order::getId() const
+{
+    return m_Id;
+}
+void Order::setId(int64_t value)
+{
+    m_Id = value;
+    m_IdIsSet = true;
+}
+bool Order::idIsSet() const
+{
+    return m_IdIsSet;
+}
+void Order::unsetId()
+{
+    m_IdIsSet = false;
+}
+int64_t Order::getPetId() const
+{
+    return m_PetId;
+}
+void Order::setPetId(int64_t value)
+{
+    m_PetId = value;
+    m_PetIdIsSet = true;
+}
+bool Order::petIdIsSet() const
+{
+    return m_PetIdIsSet;
+}
+void Order::unsetPetId()
+{
+    m_PetIdIsSet = false;
+}
+int32_t Order::getQuantity() const
+{
+    return m_Quantity;
+}
+void Order::setQuantity(int32_t value)
+{
+    m_Quantity = value;
+    m_QuantityIsSet = true;
+}
+bool Order::quantityIsSet() const
+{
+    return m_QuantityIsSet;
+}
+void Order::unsetQuantity()
+{
+    m_QuantityIsSet = false;
+}
+std::string Order::getShipDate() const
+{
+    return m_ShipDate;
+}
+void Order::setShipDate(std::string value)
+{
+    m_ShipDate = value;
+    m_ShipDateIsSet = true;
+}
+bool Order::shipDateIsSet() const
+{
+    return m_ShipDateIsSet;
+}
+void Order::unsetShipDate()
+{
+    m_ShipDateIsSet = false;
+}
+std::string Order::getStatus() const
+{
+    return m_Status;
+}
+void Order::setStatus(std::string value)
+{
+    m_Status = value;
+    m_StatusIsSet = true;
+}
+bool Order::statusIsSet() const
+{
+    return m_StatusIsSet;
+}
+void Order::unsetStatus()
+{
+    m_StatusIsSet = false;
+}
+bool Order::isComplete() const
+{
+    return m_Complete;
+}
+void Order::setComplete(bool value)
+{
+    m_Complete = value;
+    m_CompleteIsSet = true;
+}
+bool Order::completeIsSet() const
+{
+    return m_CompleteIsSet;
+}
+void Order::unsetComplete()
+{
+    m_CompleteIsSet = false;
+}
+
+}
+}
+}
+}
+