pystackt

PyStack’t Data Exporters Overview

📤 Export to OCEL 2.0

📝 Example

from pystackt import *

export_to_ocel2(
    quack_db="./stackt.duckdb",
    schema_in="main",
    schema_out="ocel2",
    sqlite_db="./ocel2_stackt.sqlite"
)

Parameter	Type	Description
quack_db	str	Path to the DuckDB database file containing the input data.
schema_in	str	Name of the schema in the DuckDB file that contains the input data. Needs to be stored using in Stack’t relational schema.
schema_out	str	Name of the schema where the OCEL 2.0 tables will be created first. If schema already exists, it will be cleared first.
sqlite_db	str	Path to the SQLite file used to export the OCEL 2.0 tables. A new file is created if it doesn’t exist yet (recommended). Existing tables will be overwritten but will not be deleted first.

Input data (quack_db,schema_in)

The input data for this function needs to be stored in a DuckDB database file using the Stack’t relational schema. The path to the DuckDB file is defined in quack_db. The schema in which the data is stored is defined by schema_in.

Output data (schema_out,sqlite_db)

The output data in OCEL 2.0 format will be first written to the schema schema_out in quack_db. If this schema already exists, all existing tables in the schema will be deleted first.

Afterwards all tables in schema_out will be copied to a SQLite database file defined by sqlite_db. If the file does not exist yet, a new file will be created (recommended). Otherwise, existing tables will be overwritten. However, existing tables will not be deleted first, so if the new output uses different object/event types you should always create a new SQLite file!

⚠️ Information loss

Below is a list of information that is lost when exporting to OCEL 2.0.

• Since dynamic object-to-object relations are not supported by OCEL 2.0, only the first object-to-object relation qualifiers are used. Changes to object-to-object relations over time are therefore not exported.
• Since event-to-object-attribute-value relations are not supported by OCEL 2.0, they are not exported.

ℹ️ More information on OCEL 2.0

• The OCEL 2.0 standard is defined in OCEL (Object-Centric Event Log) 2.0 Specification.
• To explore event logs in the OCEL 2.0 format, you can use OCPQ or Ocelot.

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