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PostgresDataSource - Source Code

File: Distributed_Design_Optimizer/postprocess/models/PostgresDataSource.py

# Copyright (C) The DistributedDesignOptimizer Contributors
# Licensed under the GNU General Public License v3.0. See LICENSE file for details.
#
# Additional Request:
# We kindly request that any modifications or changes to the source code be
# shared with us by submitting them as pull requests to our GitHub repository.
# This request is not legally binding but is made in the spirit of
# collaboration and open-source development.
"""Stub PostgreSQL implementation of the DataSource interface."""
from collections import deque

from .DataSource import DataSource


class PostgresDataSource(DataSource):
    """Future PostgreSQL data source — stub implementation.

    Intended SQL schema:
        runs(run_id, name, coordinator_type, created_at, updated_at)
        iterations(iteration_id, run_id, outer_loop_itr, data JSONB, created_at)
        time_series(run_id, variable_path, iteration, value)
    """

    def connect(self, **kwargs) -> None:
        """Establish connection to the PostgreSQL database.

        Future: QSqlDatabase.addDatabase("QPSQL") or psycopg2.connect(
            host=kwargs['host'], port=kwargs['port'],
            dbname=kwargs['dbname'], user=kwargs['user'], password=kwargs['password']
        )
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def load_entry(self, path_or_id: str) -> str:
        """Load a run entry by its database identifier.

        Args:
            path_or_id: Database run identifier.

        Returns:
            The entry identifier string.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def list_entries(self) -> list[str]:
        """Return all loaded entry IDs from the database.

        Returns:
            List of entry identifier strings.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def get_tree_structure(self, entry_id: str) -> dict:
        """Return nested dict representing the variable hierarchy.

        Args:
            entry_id: Identifier of the run entry.

        Returns:
            Nested dict for tree display.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def get_values(self, entry_id: str, item_path: str) -> list[float]:
        """Return time-series values for a given variable path.

        Args:
            entry_id: Identifier of the run entry.
            item_path: Dot-separated path to the variable.

        Returns:
            List of float values across iterations.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def get_iteration_data(self, entry_id: str, iteration: int) -> dict:
        """Return full data dict for one iteration.

        Args:
            entry_id: Identifier of the run entry.
            iteration: Zero-based iteration index.

        Returns:
            Dict containing all data for the requested iteration.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def get_all_iterations(self, entry_id: str) -> deque:
        """Return all iterations for an entry.

        Args:
            entry_id: Identifier of the run entry.

        Returns:
            Deque of iteration data dicts.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def get_metadata(self, entry_id: str) -> dict:
        """Return metadata dict for the given run entry.

        Args:
            entry_id: Identifier of the run entry.

        Returns:
            Dict with run metadata fields.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def check_for_updates(self) -> dict[str, bool]:
        """Check for updated runs in the database.

        Returns:
            Dict mapping entry IDs to whether they have been updated.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def reload_entry(self, entry_id: str) -> None:
        """Re-query a specific run from the database.

        Args:
            entry_id: Identifier of the entry to reload.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def get_iteration_labels(self, entry_id: str) -> list[dict]:
        """Return per-iteration metadata for x-axis labeling.

        Args:
            entry_id: Identifier of the run entry.

        Returns:
            List of dicts with iteration metadata keys.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def remove_entry(self, entry_id: str) -> None:
        """Remove a run entry from the database.

        Args:
            entry_id: Identifier of the entry to remove.
        """
        raise NotImplementedError("PostgreSQL backend not yet implemented")

    def close(self) -> None:
        """Close the database connection and release resources."""
        raise NotImplementedError("PostgreSQL backend not yet implemented")