DBIx::QueryByName::Result::HashIterator - A hash iterator around a statement handle

Provides an iterator-like api to a DBI statement handle that is expected to return one or more columns upon each call to fetchrow_array().

DO NOT USE DIRECTLY!

my $i = new($query,$sth);

Return a hash iterator wrapped around this statement handle.

my $result = $i->next();

or

my $result = $i->next($col1, $col2...);

If next is called with no arguments, it returns the query's result as a hashref (just as fetchrow_hash would) or undef if there are no more rows to fetch.

Example:

    # call query GetJobs that returns an iterator on which
    # we call next directly. The query returns a hash with
    # two keys 'id' and 'name'
    my $v = $dbh->GetJobs->next;
    my $id = $v->{id};
    my $name = $v->{name};

If next is called a list of column names in arguments, it returns the query's result as a list of the corresponding hashref's values for those columns, or undef if there are no more rows to fetch.

Example:

    # same as previous example, just more concise:
    my ($id,$name) = $dbh->GetJobs->next('id','name');