IDataPointRegistry

What is a Data Point Registry?

Data Point Registry defines a space of compatible DataPoints. Behaves as an Access Management smart contract responsible for creating, managing, and controlling access to Data Points. Multiple Data Point Registries can coexist under the Nexera Standard, and they allocates new Data Points to specified owners and manages administrative roles, ensuring that only authorized individuals have control over the Data Points. When a user allocates a Data Point, they can grant permissions to the desired Data Manager (DM) for asset management. If a change in DM implementation is required, the user can use the registry to assign permissions to a new DM and revoke access from the previous one if necessary.

Fig 1. Data Point Registry interaction with DataPoints.

Methods

1. isAdmin()

function isAdmin(DataPoint dp, address account) external view returns (bool);

Description	Parameters	Returns	Modifiers
Verifies if an address has an Admin role for a Data Point	dp: Data Point identifier account: Account to verify	Boolean indicating if the account is an admin	external view

2. allocate()

function allocate(address owner) external payable returns (DataPoint);

Description	Parameters	Returns	Modifiers
Allocates a Data Point to an owner	owner: Owner of the new Data Point	Allocated Data Point	external payable

Note: Owner SHOULD be granted Admin role during allocation.

3. transferOwnership()

function transferOwnership(DataPoint dp, address newOwner) external;

Description	Parameters	Returns	Modifiers
Transfers ownership of a Data Point to a new owner	dp: Data Point identifier newOwner: New owner	None	external

4. grantAdminRole()

function grantAdminRole(DataPoint dp, address account) external returns (bool);

Description	Parameters	Returns	Modifiers
Grant permission to grant/revoke other roles on the Data Point inside a Data Index Implementation	dp: Data Point identifier account: New admin	Boolean indicating if the role was granted	external

5. revokeAdminRole()

function revokeAdminRole(DataPoint dp, address account) external returns (bool);

Description	Parameters	Returns	Modifiers
Revoke permission to grant/revoke other roles on the Data Point inside a Data Index Implementation	dp: Data Point identifier account: Old admin	Boolean indicating if the role was revoked	external

Note: If an owner revokes Admin role from himself, he can add it again.

Events

1. DataPointAllocated

event DataPointAllocated(DataPoint indexed dp, address owner);

Description	Parameters
Emitted when a Data Point is allocated	dp: Data Point identifier (indexed) owner: Address of the owner of the new Data Point

2. DataPointOwnershipTransferred

event DataPointOwnershipTransferred(DataPoint indexed dp, address previousOwner, address newOwner);

Description	Parameters
Emitted when ownership of a Data Point is transferred	dp: Data Point identifier (indexed) previousOwner: Address of the previous owner newOwner: Address of the new owner

3. DataPointAdminGranted

event DataPointAdminGranted(DataPoint indexed dp, address account);

Description	Parameters
Emitted when Admin role is granted	dp: Data Point identifier (indexed) account: Address of the account granted the Admin role

4. DataPointAdminRevoked

event DataPointAdminRevoked(DataPoint indexed dp, address account);

Description	Parameters
Emitted when Admin role is revoked	dp: Data Point identifier (indexed) account: Address of the account revoked from the Admin role

Errors

1. CounterOverflow

error CounterOverflow();

Description	Parameters
Thrown when the Data Point allocation counter overflows	None

2. NativeCoinDepositIsNotAccepted

error NativeCoinDepositIsNotAccepted();

Description	Parameters
Thrown when native coin is sent during Data Point allocation	None

3. InvalidDataPointOwner

error InvalidDataPointOwner(DataPoint dp, address owner);

Description	Parameters
Thrown when caller is not the owner of the Data Point	dp: Data Point identifier owner: Address of the invalid owner

note

For more on Data Point allocation and the Registry's role, visit the Data Point Registry Contract Section.