SmartContractGet()

Before calling the function make sure you have the Connector object initialized.

Understanding Connector Object

Function Call

Field	Type	Description
Address	​string​	Base58 ed25519 Smart Contract Address

SmartContractGet("Input here Base58 Smart Contract Key");

Return value of function: SmartContractGetResult

Example

C#

Connector connect_ = new Connector("95.111.224.219", 9091);
NodeApi.SmartContractGetResult SmartContract = connect_.SmartContractGet("4SFfA1S2xfA3BdgkTn2tK14yDhLuD11RVz78kqx35jct");
Console.WriteLine(SmartContract);

Python

Javascript

Return value of function: SmartContractGetResult

Output of Example

Output is printed via ObjectDumper

{SmartContractGetResult}
  Status: {APIResponse}
    Code: 0
    Message: "Success: "
  SmartContract: {SmartContract}
    Address: ...
    Deployer: ...
    SmartContractDeploy: {SmartContractDeploy}
      SourceCode: "\nimport java.math.BigDecimal;\nimport java.util.HashMap;\nimport java.util.Map;\nimport java.util.Optional;\n\nimport com.credits.scapi.annotations.*;\nimport com.credits.scapi.v0.*;\n\nimport static java.math.BigDecimal.ROUND_FLOOR;\nimport static java.math.BigDecimal.ZERO;\n\npublic class TokenSRG extends SmartContract implements ExtensionStandard {\n\n    private final String owner;\n    private final BigDecimal tokenCost;\n    private final int decimal;\n    HashMap<String, BigDecimal> balances;\n    private String name;\n    private String symbol;\n    private BigDecimal totalCoins;\n    private HashMap<String, Map<String, BigDecimal>> allowed;\n    private boolean frozen;\n\n    public TokenSRG() {\n        super();\n        name = \"SERGE\";\n        symbol = \"SRG\";\n        decimal = 2;\n        tokenCost = new BigDecimal(0).setScale(decimal, ROUND_FLOOR);\n        totalCoins = new BigDecimal(1000000).setScale(decimal, ROUND_FLOOR);\n        owner = initiator;\n        allowed = new HashMap<>();\n        balances = new HashMap<>();\n        balances.put(owner, new BigDecimal(1000000L).setScale(decimal, ROUND_FLOOR));\n    }\n\n    @Override\n    public int getDecimal() {\n        return decimal;\n    }\n\n    @Override\n    public void register() {\n        balances.putIfAbsent(initiator, ZERO.setScale(decimal, ROUND_FLOOR));\n    }\n\n    @Override\n    public boolean setFrozen(boolean isFrozen) {\n        if (!initiator.equals(owner)) {\n            throw new RuntimeException(\"unable change frozen state! The wallet \"+ initiator + \" is not owner\");\n        }\n        this.frozen = isFrozen;\n        return true;\n    }\n\n    @Override\n    public String getName() {\n        return name;\n    }\n\n    @Override\n    public String getSymbol() {\n        return symbol;\n    }\n\n    @Override\n    public String totalSupply() {\n        return totalCoins.toString();\n    }\n\n    @Override\n    public String balanceOf(String owner) {\n        return getTokensBalance(owner).toString();\n    }\n\n    @Override\n    public String allowance(String owner, String spender) {\n        if (allowed.get(owner) == null) {\n            return \"0\";\n        }\n        BigDecimal amount = allowed.get(owner).get(spender);\n        return amount != null ? amount.toString() : \"0\";\n    }\n\n    @Override\n    public boolean transfer(String to, String amount) {\n        contractIsNotFrozen();\n        if (!to.equals(initiator)) {\n            BigDecimal decimalAmount = toBigDecimal(amount);\n            BigDecimal sourceBalance = getTokensBalance(initiator);\n            BigDecimal targetTokensBalance = getTokensBalance(to);\n            if(targetTokensBalance == null)\n            {\n                targetTokensBalance = new BigDecimal(0).setScale(decimal, ROUND_FLOOR);\n            }\n            if (sourceBalance.compareTo(decimalAmount) < 0) {\n                throw new RuntimeException(\"the wallet\"  + initiator + \"doesn\'t have enough tokens to transfer\");\n            }\n            balances.put(initiator, sourceBalance.subtract(decimalAmount));\n            balances.put(to, targetTokensBalance.add(decimalAmount));\n        }\n        return true;\n    }\n\n    @Override\n    public boolean transferFrom(String from, String to, String amount) {\n        contractIsNotFrozen();\n\n        if (!from.equals(to)) {\n            BigDecimal sourceBalance = getTokensBalance(from);\n            BigDecimal targetTokensBalance = getTokensBalance(to);\n            if(targetTokensBalance == null)\n            {\n                targetTokensBalance = new BigDecimal(0).setScale(decimal, ROUND_FLOOR);\n            }\n            BigDecimal decimalAmount = toBigDecimal(amount);\n            if (sourceBalance.compareTo(decimalAmount) < 0)\n                throw new RuntimeException(\"unable transfer tokens! The balance of \" + from + \" less then \" + amount);\n\n            Map<String, BigDecimal> spender = allowed.get(from);\n            if (spender == null || !spender.containsKey(initiator))\n                throw new RuntimeException(\"unable transfer tokens! The wallet \" + from + \" not allow transfer tokens for \" + to);\n\n            BigDecimal allowTokens = spender.get(initiator);\n            if (allowTokens.compareTo(decimalAmount) < 0) {\n                throw new RuntimeException(\"unable transfer tokens! Not enough allowed tokens. For the wallet \" + initiator + \" allow only \" + allowTokens + \" tokens\");\n            }\n\n            spender.put(initiator, allowTokens.subtract(decimalAmount));\n            balances.put(from, sourceBalance.subtract(decimalAmount));\n            balances.put(to, targetTokensBalance.add(decimalAmount));\n        }\n        return true;\n    }\n\n    @Override\n    public void approve(String spender, String amount) {\n        initiatorIsRegistered();\n        BigDecimal decimalAmount = toBigDecimal(amount);\n        Map<String, BigDecimal> initiatorSpenders = allowed.get(initiator);\n        if (initiatorSpenders == null) {\n            Map<String, BigDecimal> newSpender = new HashMap<>();\n            newSpender.put(spender, decimalAmount);\n            allowed.put(initiator, newSpender);\n        } else {\n            BigDecimal spenderAmount = initiatorSpenders.get(spender);\n            initiatorSpenders.put(spender, spenderAmount == null ? decimalAmount : spenderAmount.add(decimalAmount));\n        }\n    }\n\n    @Override\n    public boolean burn(String amount) {\n        contractIsNotFrozen();\n        BigDecimal decimalAmount = toBigDecimal(amount);\n        if (!initiator.equals(owner))\n            throw new RuntimeException(\"can not burn tokens! The wallet \" + initiator + \" is not owner\");\n        if (totalCoins.compareTo(decimalAmount) < 0) totalCoins = ZERO;\n        else totalCoins = totalCoins.subtract(decimalAmount);\n        return true;\n    }\n\n    public void payable(String amount, String currency) {\n        contractIsNotFrozen();\n        BigDecimal decimalAmount = toBigDecimal(amount);\n        if (totalCoins.compareTo(decimalAmount) < 0) throw new RuntimeException(\"not enough tokes to buy\");\n        balances.put(initiator, Optional.ofNullable(balances.get(initiator)).orElse(ZERO).add(decimalAmount));\n        totalCoins = totalCoins.subtract(decimalAmount);\n    }\n\n    @Override\n    public boolean buyTokens(String amount) {\n        return false;\n    }\n\n    private void contractIsNotFrozen() {\n        if (frozen) throw new RuntimeException(\"unavailable action! The smart-contract is frozen\");\n    }\n\n    private void initiatorIsRegistered() {\n        if (!balances.containsKey(initiator))\n            throw new RuntimeException(\"unavailable action! The wallet \" + initiator + \" is not registered\");\n    }\n\n    private BigDecimal toBigDecimal(String stringValue) {\n        return new BigDecimal(stringValue).setScale(decimal, ROUND_FLOOR);\n    }\n\n    private BigDecimal getTokensBalance(String address) {\n        return balances.get(address);\n    }\n}\n"
      ByteCodeObjects: ...
      HashState: ""
      TokenStandard: 0
    ObjectState: ...
    CreateTime: 1590418368185
    TransactionsCount: 4