// **********************************************************************// // <copyright>// //  BBN Technologies//  10 Moulton Street//  Cambridge, MA 02138//  (617) 873-8000// //  Copyright (C) BBNT Solutions LLC. All rights reserved.// // </copyright>// **********************************************************************// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/layer/vpf/TilingAdapter.java,v $// $Revision: 1.4.2.1 $ $Date: 2004/10/14 18:27:22 $ $Author: dietrick $// **********************************************************************package com.bbn.openmap.layer.vpf;import java.util.List;/** * An interface class for a set of adapter classes that hide the * tiling format of a VPF table. None of the methods taking a List * parameter may modify the passed in list. *  * @see DcwRecordFile#getTilingAdapter(String,String) */public interface TilingAdapter {    /**     * Get the tile identifier for the alternate tile     *      * @param l a row of the table this adapter was created for     * @return the tile id of the alternate tile     */    public int getTileId(List l);    /**     * Get the primitive identifier in the current tile     *      * @param l a row of the table this adapter was created for     * @return the primitive id in the current tile     */    public int getPrimId(List l);    /**     * Get the primitive identifier in the alternate tile     *      * @param l a row of the table this adapter was created for     * @return the primitve id in the alternate tile     */    public int getTilePrimId(List l);    /**     * Get the full set of primitive information     *      * @param l a row of the table this adapter was created for     * @return the full cross tile identifier information     */    public DcwCrossTileID getPrim(List l);    /**     * A TilingAdapter for untiled data. (The tile_id column doesn't     * exist, and the primitive column is not a cross-tile     * identifier.) Alternate tile will always return -1.     */    public static class UntiledAdapter implements TilingAdapter {        /** the primitive column */        final private int column;        public UntiledAdapter(int column) {            this.column = column;        }        public int getTileId(List l) {            return -1;        }        public int getPrimId(List l) {            return ((Number) l.get(column)).intValue();        }        public int getTilePrimId(List l) {            return ((Number) l.get(column)).intValue();        }        public DcwCrossTileID getPrim(List l) {            return new DcwCrossTileID(getPrimId(l), -1, getTilePrimId(l));        }    }    /**     * A TilingAdapter for tiled data where the primitive column is a     * cross-tile identifier.     */    public static class CrossTileAdapter implements TilingAdapter {        /** the primitive column */        final private int column;        public CrossTileAdapter(int column) {            this.column = column;        }        public int getTileId(List l) {            return getPrim(l).nextTileID;        }        public int getPrimId(List l) {            return getPrim(l).currentTileKey;        }        public int getTilePrimId(List l) {            return getPrim(l).nextTileKey;        }        public DcwCrossTileID getPrim(List l) {            return (DcwCrossTileID) l.get(column);        }    }    /**     * A TilingAdapter where the tile identifier is retrieved from the     * tile_id column, and the primitive identifier comes from a     * numeric column.     */    public static class TiledAdapter implements TilingAdapter {        /** the tile column */        final private int tilecolumn;        /** the primitive column */        final private int primcolumn;        public TiledAdapter(int tilecolumn, int primcolumn) {            this.tilecolumn = tilecolumn;            this.primcolumn = primcolumn;        }        public int getTileId(List l) {            return ((Number) l.get(tilecolumn)).intValue();        }        public int getPrimId(List l) {            return getTilePrimId(l);        }        public int getTilePrimId(List l) {            return ((Number) l.get(primcolumn)).intValue();        }        public DcwCrossTileID getPrim(List l) {            return new DcwCrossTileID(getPrimId(l), getTileId(l), getTilePrimId(l));        }    }}