bbc_ledger module¶
BBcLedger (config[, dbtype, loglevel, logname]) |
Database manager |
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class
bbc_ledger.
BBcLedger
(config, dbtype='sqlite', loglevel='all', logname=None)[source]¶ Bases:
object
Database manager SQL style only (for PoC alpha version)
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check_table_existence
(domain_id, dbname, name)[source]¶ (internal use) checking table existence
Parameters: - domain_id –
- dbname –
- name –
Returns: the corresponding record array or None
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close_db
(domain_id, dbname)[source]¶ (internal use) close DB
Parameters: - domain_id –
- dbname –
Returns:
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create_table_in_db
(domain_id, dbname, tbl, tbl_definition, primary_keys=[], indices=[])[source]¶ (internal use) Create a new table in a DB
Parameters: - domain_id –
- dbname –
- tbl –
- tbl_definition –
- primary_keys –
- indices –
Returns:
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exec_sql
(domain_id, dbname, sql, *dat)[source]¶ (internal use) Exec SQL and get all records
Parameters: - domain_id –
- dbname –
- sql –
- dat –
Returns:
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exec_sql_fetchone
(domain_id, dbname, sql, *dat)[source]¶ (internal use) Exec SQL and get one record
Parameters: - domain_id –
- dbname –
- sql –
- dat –
Returns:
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find_locally
(domain_id, asset_group_id, resource_id, resource_type, want_newest=False)[source]¶ Find data by ID
Parameters: domain_id – :param asset_group_id :param resource_id: Transaction_ID or Asset_ID :param resource_type: ResourceType value :param want_newest: If True, the entry having the biggest ID in the same condition is required :return: data, data_type
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insert_locally
(domain_id, asset_group_id, resource_id, resource_type, data, require_uniqueness=True)[source]¶ Insert data in the local ledger
Parameters: - domain_id –
- asset_group_id –
- resource_id – Transaction_ID, Asset_ID, or Owner_ID
- resource_type – ResourceType value
- data – Transaction Data (serialized), Transacrtion_ID, or Node_ID
- require_uniqueness – Ignore uniqueness if True
Returns: True/False
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