Add chainID to Chain class Lambda

Lambdas/Lists/Chain/src/ChainGetter.java

@@ -0,0 +1,29 @@
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ChainGetter implements CallHandler {
+    private final Connection connection;
+
+    private final String GET_CHAIN = "SELECT * FROM Chain WHERE chainID = ?;";
+
+    public ChainGetter(Connection connection, String cognitoID) {
+        this.connection = connection;
+    }
+
+    @Override
+    public Object conductAction(Map<String, Object> bodyMap, HashMap<String, String> queryMap, String cognitoID) throws SQLException {
+        PreparedStatement statement = connection.prepareStatement(GET_CHAIN);
+        statement.setInt(1, Integer.parseInt(queryMap.get("id")));
+        System.out.println(statement);
+        ResultSet queryResults = statement.executeQuery();
+        queryResults.first();
+        System.out.println(queryResults);
+        Chain retrievedChain = new Chain(queryResults);
+        System.out.println(retrievedChain);
+        return retrievedChain;
+    }
+}