Computation View

Experimental

The Workbench View classes are currently in experimental mode so have fun but expect issues and API changes going forward.

Note: This class can be automatically invoked from DataSource/FeatureSet set_computation_columns() DataSource or FeatureSet. If you need more control then you can use this class directly.

ComputationView Class: Create a View with a subset of columns for display purposes

ComputationView

Bases: ColumnSubsetView

ComputationView Class: Create a View with a subset of columns for computation purposes

Common Usage

# Create a default ComputationView
fs = FeatureSet("test_features")
comp_view = ComputationView.create(fs)
df = comp_view.pull_dataframe()

# Create a ComputationView with a specific set of columns
comp_view = ComputationView.create(fs, column_list=["my_col1", "my_col2"])

# Query the view
df = comp_view.query(f"SELECT * FROM {comp_view.table} where prediction > 0.5")

Source code in src/workbench/core/views/computation_view.py

class ComputationView(ColumnSubsetView):
    """ComputationView Class: Create a View with a subset of columns for computation purposes

    Common Usage:
        ```python
        # Create a default ComputationView
        fs = FeatureSet("test_features")
        comp_view = ComputationView.create(fs)
        df = comp_view.pull_dataframe()

        # Create a ComputationView with a specific set of columns
        comp_view = ComputationView.create(fs, column_list=["my_col1", "my_col2"])

        # Query the view
        df = comp_view.query(f"SELECT * FROM {comp_view.table} where prediction > 0.5")
        ```
    """

    @classmethod
    def create(
        cls,
        artifact: Union[DataSource, FeatureSet],
        source_table: str = None,
        column_list: Union[list[str], None] = None,
        column_limit: int = 30,
    ) -> Union[View, None]:
        """Factory method to create and return a ComputationView instance.

        Args:
            artifact (Union[DataSource, FeatureSet]): The DataSource or FeatureSet object
            source_table (str, optional): The table/view to create the view from. Defaults to None
            column_list (Union[list[str], None], optional): A list of columns to include. Defaults to None.
            column_limit (int, optional): The max number of columns to include. Defaults to 30.

        Returns:
            Union[View, None]: The created View object (or None if failed to create the view)
        """
        # Use the create logic directly from ColumnSubsetView with the "computation" view name
        return ColumnSubsetView.create("computation", artifact, source_table, column_list, column_limit)

create(artifact, source_table=None, column_list=None, column_limit=30) classmethod

Factory method to create and return a ComputationView instance.

Parameters:

Name	Type	Description	Default
artifact	Union[DataSource, FeatureSet]	The DataSource or FeatureSet object	required
source_table	str	The table/view to create the view from. Defaults to None	None
column_list	Union[list[str], None]	A list of columns to include. Defaults to None.	None
column_limit	int	The max number of columns to include. Defaults to 30.	30

Returns:

Type	Description
Union[View, None]	Union[View, None]: The created View object (or None if failed to create the view)

Source code in src/workbench/core/views/computation_view.py

@classmethod
def create(
    cls,
    artifact: Union[DataSource, FeatureSet],
    source_table: str = None,
    column_list: Union[list[str], None] = None,
    column_limit: int = 30,
) -> Union[View, None]:
    """Factory method to create and return a ComputationView instance.

    Args:
        artifact (Union[DataSource, FeatureSet]): The DataSource or FeatureSet object
        source_table (str, optional): The table/view to create the view from. Defaults to None
        column_list (Union[list[str], None], optional): A list of columns to include. Defaults to None.
        column_limit (int, optional): The max number of columns to include. Defaults to 30.

    Returns:
        Union[View, None]: The created View object (or None if failed to create the view)
    """
    # Use the create logic directly from ColumnSubsetView with the "computation" view name
    return ColumnSubsetView.create("computation", artifact, source_table, column_list, column_limit)

Questions?

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