Package com.im.df.impl.db.resultset

Class ResultSetRegistry

  • public final class ResultSetRegistry
extends Object
    Registry for currently activated result sets. Contains currently activated result sets for data trees. The selected (activated) result set from UI is propagated via Lookup.
    Since:
    14.10.20
    Author:
    Peter Szepe

    • Method Detail

      • getInstance

        public static ResultSetRegistry getInstance()
        Returns a singleton instance of registry.
        Returns:
        singleton instance.

      • getActiveResultSet

        public ResultSetImpl getActiveResultSet​(com.im.df.api.ddl.DFDataTree dataTree,
                                        com.im.commons.progress.DFEnvironmentRO env)
        Returns the currently active result set for the data tree. If there is no result set for the data tree creates one and activates it.
        Parameters:
        dataTree - over which this result set operates
        env - environment used during data loading
        Returns:
        Active result set, never null.

      • getActiveResultSetIfExists

        public ResultSetImpl getActiveResultSetIfExists​(com.im.df.api.ddl.DFDataTree dataTree)
        Returns the currently active result set for data tree. The last used result set is the active one. Activation is done by clicking in UI, e.g. by opening a view the active result set become the one bound with the opened view. Can return null if no active result set is present for the data tree.
        Parameters:
        dataTree - The data tree.
        Returns:
        The active result set or null if no active result set exists for data tree.

      • containsDataTree

        public boolean containsDataTree​(com.im.df.api.ddl.DFDataTree dataTree)
        Returns whether the registry contains result set for the data tree.
        Parameters:
        dataTree - The data tree.
        Returns:
        True when the registry contains result set for the data tree.