boon/src/main/java/org/boon/datarepo/impl/FilterDefault.java
private ResultSet mainQueryPlan( Criteria[] expressions ) {



        ResultSetInternal results = new ResultSetImpl( this.fields );

        if (expressions == null || expressions.length == 0) {
            results.addResults ( searchableCollection.all() );
        }

        /* I am sure this looked easy to read when I wrote it.
         * If there is only one expression and first expression is a group then
         * the group is that first expression otherwise wrap
         * all of the expressions in an and clause. */
        Group group = expressions.length ==
                1 && expressions[ 0 ] instanceof Group
                ? ( Group ) expressions[ 0 ] : ObjectFilter.and( expressions );

        /**
         * Run the filter on the group.
         */
        doFilterGroup( group, results );

        return results;
    }
private ResultSet mainQueryPlan( Criteria[] expressions ) {



        ResultSetInternal results = new ResultSetImpl( this.fields );

        if (expressions == null || expressions.length == 0) {
            results.addResults ( searchableCollection.all() );
        }

        /* I am sure this looked easy to read when I wrote it.
         * If there is only one expression and first expression is a group then
         * the group is that first expression otherwise wrap
         * all of the expressions in an and clause. */
        Group group = expressions.length ==
                1 && expressions[ 0 ] instanceof Group
                ? ( Group ) expressions[ 0 ] : ObjectFilter.and( expressions );

        /**
         * Run the filter on the group.
         */
        doFilterGroup( group, results );

        return results;
    }
This is the main criteria plan in case the name was not
obvious.

@param expressions
@return
@author Rick Hightower