To Delay Instantiation of a Smart Contract to Save Calculation Resources in IoT

Algorithm 3. Different instantiation combinations.

1: Define smart contract SCXI

2: …

3: End Define

4:

5: Define smart contract SCX-Post

6: …

7: End Define

8:

9: Define smart contract SCY-A

10: do other action

11: Variable scx = new Variable(”SCXI”);

12: invoking method1 of scx

13: do other action

14: invoke method2 of scx;

15: do other action

16: End Define

17:

18: Define smart contract SCY-B

19: do other action

20: Variable scx = new Variable(”SCX-Post”);

21: invoking method1 of scx; // Method1 is cached

22: do other action

23: invoke method2 of scx; // Method2 requires to have a real SCX smart contract instance

24: do other action

25: End Define

26:

27: Define smart contract SCY-C

28: do other action

29: //scope begin {

30: Variable scx = new Variable(”SCXI”);

31: invoking method of scx

32: do other action

33: invoke method of scx;

34: //scope end }

35: do other action

36: End Define

37:

38: Define smart contract SCY-D

39: do other action

40: //scope begin {

41: Variable scx = new Variable(”SCX-Post”);

42: invoking method1 of scx; // Method1 is cached

43: do other action

44: invoke method2 of scx; // Method2 requires to have a real SCA smart contract instance

45: //scope end }

46: do other action

47: End Define

Algorithm 3. Different instantiation combinations.