Neo Namespace
The Neo namespace is the API provided by the Neo blockchain, providing a way to access the block-chain data and manipulate the persistent store. These APIs are divided into these categories:
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Blockchain ledger. The contract can access all the data on the entire blockchain through interops layer, including complete blocks and transactions, as well as each of their fields.
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Native contract. A series of methods of native contracts can be invoked in the smart contract.
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Persistent storage. Each application contract deployed on Neo has a storage space that can only be accessed by the contract itself. These methods provided can access the data in the contract.
Class
| Class | Description |
|---|---|
| Account | A class representing the Account, providing a method to verify if it is a standard account. |
| Block | A class representing a block, provides a set of block-specific properties. |
| Contract | A class representing a contract. |
| ContractManagement | A contract that manages other contracts. |
| Crypto | Provides the ECDsa method to verify the signature. |
| GAS | A set of properties and methods of the native contract GasToken. |
| Helper | An auxiliary method for the contract storage |
| Iterator | The customized iterator in the smart contract. |
| Json | A data structure |
| Ledger | A set of properties and methods of the native contract LedgerContract |
| NameService | A set of properties and methods of the native contract NameService |
| NEO | A set of properties and methods of the native contract NeoToken. |
| Notification | The notification sent when the contract is executed. |
| Oracle | Provides methods to initiate Oracle requests. |
| Policy | Provides methods to access and modify system parameters. |
| RoleManagement | A set of properties and methods of the native contract RoleManagement. |
| Runtime | Provides a set of methods during smart contract execution |
| Storage | Provides a set of methods to insert, query, or delete data of a persistent store |
| StorageContext | A class representing storage context of the persistent storage |
| StorageMap | A key-value storage for a specific prefix in the given storage context. |
| Transaction | The base class representing the transaction |
Enumeration
| Enumeration | Description |
|---|---|
| CallFlags | Defines the pattern when invoking contracts |
| FindOptions | Defines search options for searching a storage. Used in the Storage.Find method. |
| OracleResponseCode | Defines the response code types of Oracle |
| RecordType | Defines the DNS types of NameServices |
| Role | Defines permission types of RoleManagement |
| StorageFlags | Represents the property of written data |
| TriggerType | Defines the trigger types |