/* Copyright 2013 The jeo project. All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package io.jeo.geopkg; import java.io.IOException; import io.jeo.data.Cursor; import io.jeo.tile.Tile; import io.jeo.tile.TilePyramid; import io.jeo.tile.TileDataset; public class GeoPkgTileSet extends GeoPkgDataset<TileEntry> implements TileDataset { GeoPkgTileSet(TileEntry entry, GeoPkgWorkspace geopkg) { super(entry, geopkg); } @Override public TilePyramid pyramid() { return entry.getTilePyramid(); } @Override public Tile read(long z, long x, long y) throws IOException { Cursor<Tile> c = geopkg.read(entry, (int)z, (int)z, (int)x, (int)x, (int)y, (int)y); try { if (c.hasNext()) { return c.next(); } return null; } finally { c.close(); } } @Override public Cursor<Tile> read(long z1, long z2, long x1, long x2, long y1, long y2) throws IOException { return geopkg.read(entry, (int)z1, (int)z2, (int)x1, (int)x2, (int)y1, (int)y2); } }