Method add

openevolve/database.py:211–368

Add a program to the database Args: program: Program to add iteration: Current iteration (defaults to last_iteration) target_island: Specific island to add to (auto-detects parent's island if None) Returns: Program ID

(
        self, program: Program, iteration: int = None, target_island: Optional[int] = None
    )

        self.similarity_threshold = config.similarity_threshold

    def add(
        self, program: Program, iteration: int = None, target_island: Optional[int] = None
    ) -> str:
        """
        Add a program to the database

        Args:
            program: Program to add
            iteration: Current iteration (defaults to last_iteration)
            target_island: Specific island to add to (auto-detects parent's island if None)

        Returns:
            Program ID
        """
        # Store the program
        # If iteration is provided, update the program's iteration_found
        if iteration is not None:
            program.iteration_found = iteration
            # Update last_iteration if needed
            self.last_iteration = max(self.last_iteration, iteration)

        self.programs[program.id] = program

        # Calculate feature coordinates for MAP-Elites
        feature_coords = self._calculate_feature_coords(program)

        # Determine target island
        # If target_island is not specified and program has a parent, inherit parent's island
        if target_island is None and program.parent_id:
            parent = self.programs.get(program.parent_id)
            if parent and "island" in parent.metadata:
                # Child inherits parent's island to maintain island isolation
                island_idx = parent.metadata["island"]
                logger.debug(
                    f"Program {program.id} inheriting island {island_idx} from parent {program.parent_id}"
                )
            else:
                # Parent not found or has no island, use current_island
                island_idx = self.current_island
                if parent:
                    logger.warning(
                        f"Parent {program.parent_id} has no island metadata, using current_island {island_idx}"
                    )
                else:
                    logger.warning(
                        f"Parent {program.parent_id} not found, using current_island {island_idx}"
                    )
        elif target_island is not None:
            # Explicit target island specified (e.g., for migrants)
            island_idx = target_island
        else:
            # No parent and no target specified, use current island
            island_idx = self.current_island

        island_idx = island_idx % len(self.islands)  # Ensure valid island

        # Novelty check before adding
        if not self._is_novel(program.id, island_idx):