יובל קוג'מן (Yuval Kogman) > KiokuDB-0.51 > KiokuDB::Backend::Role::Scan

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Source   Latest Release: KiokuDB-0.57

NAME ^

KiokuDB::Backend::Role::Scan - Root set iteration

SYNOPSIS ^

    with qw(KiokuDB::Backend::Role::Scan);

    sub all_entries {
        my $self = shift;

        # return all root set entries
        return Data::Stream::Bulk::Foo->new(...);
    }

DESCRIPTION ^

This is a role for iterative scanning of all entries in a backend.

It is used for database backups, and various other tasks.

REQUIRED METHODS ^

all_entries

Should return a Data::Stream::Bulk stream enumerating all entries in the database.

OPTIONAL METHODS ^

These method have default implementations defined in terms of all_entries but maybe overridden if there is a more optimal solution than just filtering that stream.

root_entries

Should return a Data::Stream::Bulk of just the root entries.

child_entries

Should return a Data::Stream::Bulk of everything but the root entries.

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