Service - Cart

Overview

Manages a shopping cart of sell offers prior to confirming as order/s.

Repository

https://bitbucket.org/izara-market-orders/izara-market-orders-cart

DynamoDB tables

Standard Config Table Per Service

Configuration tags

{
	configTag: "SellOfferManagerServiceName"
	configKey: "SellOfferManagerServiceName"
	configValue: xxx // eg: "SellOfferManager"
}

{
	configTag: "DeliveryMethodManagerServiceName"
	configKey: "DeliveryMethodManagerServiceName"
	configValue: xxx // eg: "DeliveryMethodManager"
}

{
	configTag: "PaymentMethodManagerServiceName"
	configKey: "PaymentMethodManagerServiceName"
	configValue: xxx // eg: "PaymentMethodManager"
}

{
	configTag: "SellOfferPlanServiceName"
	configKey: "SellOfferPlanServiceName"
	configValue: xxx // eg: "SellOfferPlan"
}

{
	configTag: "OrderGraphServiceName"
	configKey: "OrderGraphServiceName"
	configValue: xxx // eg: "OrderGraph"
}

Graph database

Service - Orders Graph

Nodes

{
	nodeLabel: "{CartPlanLib.CART_GRAPH_NODE_LABEL}", // "cart"
	schema: {
		identifier: true,
		restrictProperties: true,
		restrictRelationships: true,
		properties: {
			cartId: {
				identifier: true, // create unique id from request params and uniqueMessageId
			},
			totalQuantity: {},
			totalValue: {}, // will be in the currency of the paymentMethod selected (when changes need to re-calculate)
			name: {},
			status: {}, // validating|valid|invalid
			dateValidated: {}, // date last time validated
		},
	}
}

{
	nodeLabel: "{CartPlanLib.CART_SELLOFFERLINK_GRAPH_NODE_LABEL}", // "cartSellOfferLink"
	schema: {
		identifier: true,
		restrictProperties: true,
		restrictRelationships: true,
		properties: {
			cartSellOfferLinkId: {
				identifier: true, // create unique id from request params and uniqueMessageId
			},
			quantity: {},
			valid: {}, // true|false depending on last validation check
		},
	}
}

{
	nodeLabel: "{CartPlanLib.CARTORDER_GRAPH_NODE_LABEL}", // "cartOrder"
	schema: {
		identifier: true,
		restrictProperties: true,
		restrictRelationships: true,
		properties: {
			cartOrderId: {
				identifier: true, // create unique id from request params and uniqueMessageId
			},
			totalQuantity: {},
			totalValue: {}, // will be in the currency of the paymentMethod selected (when changes need to re-calculate)
		},
	}
}

Relationships

{
	relationshipType: "{CartPlanLib.createHasActiveCartGraphRelationshipType()}", // "hasActive_cart"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

{
	relationshipType: "{CartPlanLib.createHasCompletedCartGraphRelationshipType()}", // "hasCompleted_cart"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

{
	relationshipType: "{CartPlanLib.createHasDeletedCartGraphRelationshipType()}", // "hasDeleted_cart"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

• links a user to a cart
• a cart can either be active, completed, or deleted

{
	relationshipType: "{CartPlanLib.cartPaymentMethodGraphRelationshipType()}", // "cart_paymentMethod"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

• links a cart to it's current paymentMethod setting

{
	relationshipType: "{CartPlanLib.cartDeliveryMethodGraphRelationshipType()}", // "cart_deliveryMethod"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

• links a cart to it's current deliveryMethod setting

{
	relationshipType: "{CartPlanLib.createHasCartSellOfferLinkGraphRelationshipType()}", // "has_cartSellOfferLink"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

{
	relationshipType: "{CartPlanLib.createCartSellOfferLinkIsSellOfferGraphRelationshipType()}", // "cartSellOfferLinkIs_sellOffer"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

• Links cartSellOfferLink to one sellOffer

{
	relationshipType: "{CartPlanLib.createCarthasCartOrderGraphRelationshipType()}", // "has_cartOrder"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

{
	relationshipType: "{CartPlanLib.createCartOrderHasCartSellOfferLinkGraphRelationshipType()}", // "cartOrderHas_cartSellOfferLink"
	schema: {
		elementCanBeRemoved: true,
		allPropertiesImmutable: true,
		restrictProperties: true,
		properties: {
			originTimestamp: //timestamp the request to create/change this relationship was sent
		},
	}
}

Cart Orders

• One care can have many sellOffers from many sellers/sellOfferPlans etc that cannot be purchased as a single order
• When validating split out into multiple orders according to what can be combined into a single payment/order

Data model notes

• Not storing history of cart details, consider this data transient and of low importance, no need to have record of changes

Working documents

Cart