Developing components.

* Created database classes

* Wrote initial queries

* Added validations

db/createChainDatabase.sql

@@ -1,7 +1,7 @@
 CREATE DATABASE IF NOT EXISTS chain;
 USE chain;
 CREATE TABLE IF NOT EXISTS blocks(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     blockId VARCHAR(32) UNIQUE NOT NULL,
     blockHash VARCHAR(64) UNIQUE NOT NULL,
     previousHash VARCHAR(64) UNIQUE NOT NULL,
@@ -10,23 +10,26 @@ CREATE TABLE IF NOT EXISTS blocks(
     nonce INT NOT NULL
 );
 CREATE TABLE IF NOT EXISTS cards(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     cardId VARCHAR(32) UNIQUE NOT NULL,
     pageId INT NOT NULL,
     FOREIGN KEY (blockId) REFERENCES blocks(blockId)
 );
 CREATE TABLE IF NOT EXISTS transactions(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     transactionId VARCHAR(32) UNIQUE NOT NULL,
     timestamp DATETIME NOT NULL,
+    sender VARCHAR(128) NOT NULL,
     receiver VARCHAR(128) NOT NULL,
+    signature VARCHAR(128) NOT NULL,
     isPending BOOLEAN NOT NULL DEFAULT true,
     isAbandoned BOOLEAN NOT NULL DEFAULT false,
     FOREIGN KEY (blockId) REFERENCES blocks(blockId),
     FOREIGN KEY (cardId) REFERENCES cards(cardId)
 );
 CREATE TABLE IF NOT EXISTS peers(
-    peerId INT PRIMARY KEY AUTO INCREMENT,
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
+    peerId VARCHAR(32) UNIQUE NOT NULL,
     baseUrl VARCHAR(128) UNIQUE NOT NULL,
     isUp BOOLEAN NOT NULL,
     downCount INT DEFAULT 0,

db/createMarketDatabase.sql

@@ -1,40 +1,45 @@
 CREATE DATABASE IF NOT EXISTS market;
 USE market;
 CREATE TABLE IF NOT EXISTS users(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     userId VARCHAR(36) UNIQUE NOT NULL,
     userName VARCHAR(64) UNIQUE NOT NULL,
     passwordHash VARCHAR(64) NOT NULL,
     email VARCHAR(64) UNIQUE NOT NULL,
     balance FLOAT NOT NULL DEFAULT 0,
-    public_key VARCHAR(128) NOT NULL
+    publicKey VARCHAR(128) NOT NULL
 );
-CREATE TABLE IF NOT EXISTS buyOrders(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+CREATE TABLE IF NOT EXISTS buy_orders(
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     buyOrderId VARCHAR(36) UNIQUE NOT NULL,
+    timestamp DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP(),
+    expires DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP() + INTERVAL 3 DAY,
     pageId INT NOT NULL,
     price FLOAT NOT NULL,
     volume INT NOT NULL,
     fee FLOAT NOT NULL DEFAULT 0,
+    sold INT NOT NULL DEFAULT 0,
     FOREIGN KEY (userId) REFERENCES users(userId)
 );
-CREATE TABLE IF NOT EXISTS sellOrders(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+CREATE TABLE IF NOT EXISTS sell_orders(
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     sellOrderId VARCHAR(36) UNIQUE NOT NULL,
+    timestamp DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP(),
+    expires DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP() + INTERVAL 3 DAY,
     price FLOAT NOT NULL,
     fee FLOAT NOT NULL,
     FOREIGN KEY (userId) REFERENCES users(userId)
 );
-CREATE TABLE IF NOT EXISTS sellOrdersItems(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+CREATE TABLE IF NOT EXISTS sell_orders_items(
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     cardId VARCHAR(36) NOT NULL,
-    FOREIGN KEY (sellOrderId) REFERENCES sellOrders(sellOrderId) NOT NULL,
+    FOREIGN KEY (sellOrderId) REFERENCES sell_orders(sellOrderId) NOT NULL
 );
 CREATE TABLE IF NOT EXISTS transactions(
-    rowId INT PRIMARY KEY AUTO INCREMENT,
+    sqlId INT PRIMARY KEY AUTO INCREMENT,
     transactionId VARCHAR(36) UNIQUE NOT NULL,
     isPending BOOLEAN NOT NULL DEFAULT true,
     isAbandoned BOOLEAN NOT NULL DEFAULT false,
-    FOREIGN KEY (buyOrderId) REFERENCES buyOrders(buyOrderId) NOT NULL,
-    FOREIGN KEY (sellOrderId) REFERENCES sellOrders(sellOrderId) NOT NULL
+    FOREIGN KEY (buyOrderId) REFERENCES buy_orders(buyOrderId) NOT NULL,
+    FOREIGN KEY (sellOrderItemSqlId) REFERENCES sell_order_items(sqlId) NOT NULL
 );

db/getDeck.sql

@@ -0,0 +1,10 @@
+SELECT cardId, pageId, transactionId
+FROM (
+    SELECT cardId, pageId, transactionId, ROW_NUMBER() OVER (
+        PARTITION BY cardId ORDER BY timestamp DESC
+        ) AS rowNumber
+    FROM transactions
+    JOIN cards
+    WHERE receiver == {userId}
+) AS subquery
+WHERE rowNumber == 0;