package com.se.simu.helper;
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import cn.hutool.core.io.FileUtil;
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import cn.hutool.json.JSONArray;
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import cn.hutool.json.JSONObject;
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import com.se.simu.domain.dto.GeField;
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import com.se.simu.domain.dto.GeLayer;
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import lombok.extern.slf4j.Slf4j;
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import org.gdal.ogr.*;
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import java.sql.Timestamp;
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import java.time.LocalDateTime;
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import java.util.List;
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import java.util.Vector;
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/**
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* ShapeFile帮助类
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*
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* @author WWW
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* @date 2024-09-13
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*/
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@Slf4j
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@SuppressWarnings("ALL")
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public class ShpHelper {
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private static Vector<String> options;
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public static Vector<String> getOptions() {
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if (null == options) {
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options = new Vector<>();
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options.add("ENCODING=UTF-8");
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}
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return options;
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}
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public static boolean createShp(String filePath, GeLayer geLayer) {
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Driver driver = null;
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DataSource dataSource = null;
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Layer layer = null;
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try {
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driver = ogr.GetDriverByName("ESRI shapefile");
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if (null == driver) return false;
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dataSource = driver.CreateDataSource(filePath, null);
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if (null == dataSource) return false;
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int geoType = getGeometryType(geLayer.getQueryType());
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layer = dataSource.CreateLayer(FileUtil.getName(filePath), geLayer.getDb().getSpatialReference(), geoType, getOptions());
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if (null == layer) return false;
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createLayerFields(layer, geLayer.getFields());
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FeatureDefn featureDefn = layer.GetLayerDefn();
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for (int i = 0, c = geLayer.getData().size(); i < c; i++) {
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Feature f = new Feature(featureDefn);
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JSONObject data = geLayer.getData().getJSONObject(i).getJSONObject("properties");
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setFeatureData(f, geLayer.getFields(), data);
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JSONObject geom = geLayer.getData().getJSONObject(i).getJSONObject("geometry");
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Geometry g = createGeometry(geLayer, geom);
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f.SetGeometry(g);
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layer.CreateFeature(f);
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}
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return true;
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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return false;
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} finally {
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GdalHelper.delete(layer, dataSource, driver);
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}
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}
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private static void setFeatureData(Feature f, List<GeField> fields, JSONObject data) {
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for (int i = 0, c = fields.size(); i < c; i++) {
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GeField geField = fields.get(i);
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switch (geField.getType()) {
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case "int":
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f.SetField(i, data.getInt(geField.getName()));
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break;
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case "long":
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f.SetField(i, data.getLong(geField.getName()));
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break;
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case "double":
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f.SetField(i, data.getDouble(geField.getName()));
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break;
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case "datetime":
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long date = data.getLong(geField.getName());
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Timestamp time = new Timestamp(date);
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setTimestamp(f, i, time);
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break;
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default:
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f.SetField(i, data.getStr(geField.getName()));
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break;
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}
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}
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}
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private static void setTimestamp(Feature f, int i, Timestamp time) {
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if (null == time) return;
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LocalDateTime local = time.toLocalDateTime();
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f.SetField(i, local.getYear(), local.getMonthValue(), local.getDayOfMonth(), local.getHour(), local.getMinute(), local.getSecond(), 8);
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}
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/**
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* 创建Geometry对象
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*/
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private static Geometry createGeometry(GeLayer geLayer, JSONObject geom) {
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String type = geom.getStr("type");
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JSONArray cs = geom.getJSONArray("coordinates");
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Geometry g = null;
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switch (type) {
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case "Point":
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g = new Geometry(ogr.wkbPoint);
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g.AddPoint_2D(cs.getDouble(0), cs.getDouble(1));
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break;
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case "MultiLineString":
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g = new Geometry(ogr.wkbMultiLineString);
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for (int i = 0, c = cs.size(); i < c; i++) {
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Geometry line = new Geometry(ogr.wkbLineString);
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JSONArray lineArr = cs.getJSONArray(i);
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for (int j = 0, d = lineArr.size(); j < d; j++) {
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JSONArray arr = lineArr.getJSONArray(j);
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line.AddPoint_2D(arr.getDouble(0), arr.getDouble(1));
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}
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g.AddGeometry(line);
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}
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break;
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case "MultiPolygon":
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g = new Geometry(ogr.wkbMultiPolygon);
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for (int i = 0, c = cs.size(); i < c; i++) {
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Geometry poly = new Geometry(ogr.wkbPolygon);
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JSONArray polyArr = cs.getJSONArray(i);
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for (int j = 0, d = polyArr.size(); j < d; j++) {
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Geometry ring = new Geometry(ogr.wkbLinearRing);
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JSONArray ringArr = polyArr.getJSONArray(j);
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for (int k = 0, e = ringArr.size(); k < e; k++) {
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JSONArray arr = ringArr.getJSONArray(k);
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ring.AddPoint_2D(arr.getDouble(0), arr.getDouble(1));
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}
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poly.AddGeometry(ring);
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}
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g.AddGeometry(poly);
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}
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break;
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}
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return g;
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}
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private static int getGeometryType(String type) {
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switch (type) {
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case "point":
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return ogr.wkbPoint;
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case "polyline":
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return ogr.wkbMultiLineString;
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case "polygon":
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return ogr.wkbMultiPolygon;
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default:
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return ogr.wkbUnknown;
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}
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}
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private static void createLayerFields(Layer layer, List<GeField> fields) {
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for (int i = 0, c = fields.size(); i < c; i++) {
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GeField f = fields.get(i);
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FieldDefn fd = new FieldDefn(f.getName(), getFieldType(f));
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layer.CreateField(fd, i);
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}
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}
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private static Integer getFieldType(GeField f) {
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switch (f.getType()) {
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case "int":
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return ogr.OFTInteger;
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case "long":
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return ogr.OFTInteger64;
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case "double":
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return ogr.OFTReal;
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case "datetime":
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return ogr.OFTDateTime;
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default:
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return ogr.OFTString;
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}
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}
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}
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