com.scalar.dl.ledger.database

Interface Ledger

All Known Implementing Classes:

AssetLedger, LedgerTracer

Deprecated.

This class won't be available to users in release 5.0.0.

@Deprecated
public interface Ledger

A tamper-evident ledger for storing histories of Assets.

Method Summary

Modifier and Type	Method and Description
java.util.Optional<Asset>	get(java.lang.String assetId) Deprecated. Retrieves the latest Asset entry (an asset entry with the largest age) from the ledger with the specified asset ID.
void	put(java.lang.String assetId, javax.json.JsonObject data) Deprecated. Creates/Appends an Asset entry to the ledger.
java.util.List<Asset>	scan(AssetFilter filter) Deprecated. Retrieves a list of Asset entries from the ledger with the specified AssetFilter.

Method Detail

get

java.util.Optional<Asset> get(java.lang.String assetId)

Deprecated.

Retrieves the latest Asset entry (an asset entry with the largest age) from the ledger with the specified asset ID.

Parameters:

assetId - an asset ID

Returns:

an Optional with the returned asset

scan

java.util.List<Asset> scan(AssetFilter filter)

Deprecated.

Retrieves a list of Asset entries from the ledger with the specified AssetFilter.

Parameters:

filter - a condition to filter asset

Returns:

a list of asset entries which passed the filtering

put

void put(java.lang.String assetId,
         javax.json.JsonObject data)

Deprecated.

Creates/Appends an Asset entry to the ledger. The initial entry is marked as age 0 and new entry is appended with an incremented age.

Parameters:

assetId - an asset ID to create/append

data - json-formatted asset data