root / trunk / libraries / libJCRS / src / org / gvsig / crs / ogr / GetCRSepsg.java @ 7576
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package org.gvsig.crs.ogr; |
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import java.sql.ResultSet; |
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import java.sql.SQLException; |
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import org.gvsig.crs.EpsgConnection; |
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import org.gvsig.crs.Query; |
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import org.gvsig.crs.gui.panels.ProjChooserPanel; |
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public class GetCRSepsg { |
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int epsg_code;
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boolean crs_source;
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int source_code;
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int projection_code;
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int coord_op_code;
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ProjChooserPanel pcp; |
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int datum_code;
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int ellipsoid_code, prime_meridian_code;
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String PROJCS = null; |
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String GEOGCS = null; |
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String DATUM = null; |
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String[] SPHEROID = null; |
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String[] PRIMEM = null; |
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String UNIT_A = "Decimal Degree"; |
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String UNIT_B = "Meter"; |
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String PROJECTION = null; |
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//ArrayList PARAMETER = null;
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String[] param_name = null; |
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String[] param_value = null; |
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public GetCRSepsg(){
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} |
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public GetCRSepsg(int code, boolean source_yn, int source_cod, int coord_op_cod, ProjChooserPanel pc){ |
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epsg_code = code; |
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crs_source = source_yn; |
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source_code = source_cod; |
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coord_op_code = coord_op_cod; |
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pcp = pc; |
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SPHEROID = new String[3]; |
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PRIMEM = new String[2]; |
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} |
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public void Getepsgdata(){ |
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ResultSet result;
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ResultSet result2;
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/*
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* Si es base solamente realizamos una consulta, y ya tenemos el Datum
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* (ver en caso de ser fuente que PROJCS no tiene que estar definido)
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*/
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if (crs_source){
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String sentence = "SELECT coord_ref_sys_name, datum_code " + |
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"FROM epsg_coordinatereferencesystem " +
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"WHERE coord_ref_sys_code = " + epsg_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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try {
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while (result.next()){
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GEOGCS = result.getString("coord_ref_sys_name");
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datum_code = Integer.parseInt(result.getString("datum_code")); |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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} |
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else{
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String sentence = "SELECT coord_ref_sys_name " + |
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"FROM epsg_coordinatereferencesystem " +
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"WHERE coord_ref_sys_code = " + epsg_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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String sentence2 = "SELECT coord_ref_sys_name, datum_code " + |
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"FROM epsg_coordinatereferencesystem " +
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"WHERE coord_ref_sys_code = " + source_code;
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result2 = Query.select(sentence2,pcp.connect.getConnection());
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try {
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while (result.next()){
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PROJCS = result.getString("coord_ref_sys_name");
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} |
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while (result2.next()){
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datum_code = Integer.parseInt(result2.getString("datum_code")); |
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GEOGCS = result2.getString("coord_ref_sys_name");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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} |
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/*
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* hasta aqui hemos rellenado projcs, geocs y tenemos el codigo de datum
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* vamos a obtener los c?digos del elipsoide y el prime_meridian
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*/
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String sentence = "SELECT datum_name, ellipsoid_code, prime_meridian_code " + |
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"FROM epsg_datum " +
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"WHERE datum_code = " + datum_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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try {
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while (result.next()){
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DATUM = result.getString("datum_name");
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ellipsoid_code = Integer.parseInt(result.getString("ellipsoid_code")); |
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prime_meridian_code = Integer.parseInt(result.getString("prime_meridian_code")); |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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/*
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* Ahora vamos a coger varios campos del elipsoide y operaremos con ellos, si la
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* informaci?n de los mismos no esta en las unidades de medida que utilizaremos.
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*/
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sentence = "SELECT ellipsoid_name, semi_major_axis, inv_flattening, uom_code, " +
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"semi_minor_axis, ellipsoid_shape " +
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"FROM epsg_ellipsoid " +
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"WHERE ellipsoid_code = " + ellipsoid_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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SPHEROID = getEllipsoid(result); |
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sentence = "SELECT prime_meridian_name, greenwich_longitude, uom_code " +
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"FROM epsg_primemeridian " +
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"WHERE prime_meridian_code = " + prime_meridian_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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PRIMEM = getPrimeMeridian(result); |
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/*
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* si tiene proyecci?n porque es proyectado, la buscamos
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*/
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if (!crs_source){
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sentence = "SELECT coord_op_method_code " +
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"FROM epsg_coordoperation " +
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"WHERE coord_op_code = " + coord_op_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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try {
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while (result.next()){
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projection_code = result.getInt("coord_op_method_code");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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sentence = "SELECT coord_op_method_name " +
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"FROM epsg_coordoperationmethod " +
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"WHERE coord_op_method_code = " + projection_code;
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result = Query.select(sentence,pcp.connect.getConnection());
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try {
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while (result.next()){
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PROJECTION = result.getString("coord_op_method_name");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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parameters(projection_code); |
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} |
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/*
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* Una vez que tengo todo, hago la llamada al constructor de Epsg2wkt para pasarle los
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* parametros y realizar la cadena
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* CAMBIARLO Y PONER METODOS getXXX para todos los parametros para hacerlo mas generico
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if (crs_source){
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cadwkt = new Epsg2wkt(0);
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}
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else{
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cadwkt = new Epsg2wkt();
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}
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*/
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} |
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private String[] getEllipsoid(ResultSet result) { |
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String[] spheroid = new String[3]; |
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double semi_major_axis = 0; |
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double semi_minor_axis = 0; |
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double inv_flattening = 0; |
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int uom_code = 0; |
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int ellipsoid_shape = 0; |
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try {
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while (result.next()){
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spheroid[0] = result.getString("ellipsoid_name"); |
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semi_major_axis = result.getDouble("semi_major_axis");
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semi_minor_axis = result.getDouble("semi_minor_axis");
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inv_flattening = result.getDouble("inv_flattening");
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uom_code = result.getInt("uom_code");
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ellipsoid_shape = result.getInt("ellipsoid_shape");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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/*
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* pasaremos a metros las unidades del semi_major_axis, semi_minor_axis
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*/
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String sentence = "SELECT factor_b, factor_c " + |
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"FROM epsg_unitofmeasure " +
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"WHERE uom_code = " + uom_code;
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ResultSet result2 = Query.select(sentence,pcp.connect.getConnection()); |
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double factor_b = 0; |
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double factor_c = 0; |
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try{
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while (result2.next()){
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factor_b = result2.getDouble("factor_b");
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factor_c = result2.getDouble("factor_c");
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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if (factor_b != 0 && factor_c != 0 ){ |
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semi_major_axis = (semi_major_axis * factor_b)/ factor_c; |
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if (semi_minor_axis != 0){ |
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semi_minor_axis = (semi_minor_axis * factor_b) / factor_c; |
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} |
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} |
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/*
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* calculamos inv_flattening en caso de que sea nulo
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*/
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if (inv_flattening == 0){ |
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if (ellipsoid_shape == 0){ |
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inv_flattening = 0;
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} |
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else{
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inv_flattening = (semi_major_axis) / (semi_major_axis - semi_minor_axis); |
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} |
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} |
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spheroid[1] = ""+semi_major_axis; |
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spheroid[2] = ""+inv_flattening; |
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return spheroid;
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} |
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private String[] getPrimeMeridian(ResultSet result) { |
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String[] primem = new String[2]; |
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double greenwich_longitude = 0; |
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try {
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while (result.next()){
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primem[0] = result.getString("prime_meridian_name"); |
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greenwich_longitude = result.getDouble("greenwich_longitude");
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int co= Integer.parseInt((String)result.getString("uom_code")); |
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/*
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* Realizamos este cambio de meridiano origen de la unidad de la epsg
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* a degrees, para insertarlo en este formato en wkt
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*/
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ResultSet result2 = null; |
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if (co != 9110){ |
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String sentence = "SELECT factor_b, factor_c " + |
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"FROM epsg_unitofmeasure " +
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"WHERE uom_code = " + co;
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result2 = Query.select(sentence,pcp.connect.getConnection());
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while(result.next()){
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greenwich_longitude = ((greenwich_longitude * result2.getDouble("factor_b") )/ result2.getDouble("factor_c")) * (180.0 / Math.PI); |
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} |
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} |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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primem[1] = ""+greenwich_longitude; |
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return primem;
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} |
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private void parameters(int proj) { |
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/*
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* para la consecucion de los parametros se tiene que ir buscando dependiendo de la
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* proyeccion que se utilice, hay que ver que parametros exactos tiene cada uno de ellos
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* y si hay mas de 17, que son los que se utilizan en WKT, como vamos a tratarlos, mensaje
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* de error, intentar no mostrarlos, o simplemente pasar de ellos
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*/
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ResultSet result;
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ResultSet result2;
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ResultSet result3;
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/*
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* Conseguimos la lista de parametros y valores, ordenados segun sort_order de manera
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* ascendente por lo que coincidiram siempre param_name[i] y param_value[i]
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*/
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String sentence = "SELECT COUNT(*) " + |
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"FROM epsg_coordoperationparamusage " +
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"WHERE coord_op_method_code = " + proj;
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result = Query.select(sentence,pcp.connect.getConnection());
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int count = 0; |
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try {
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result.next(); |
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count = result.getInt(1);
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} catch (SQLException e1) { |
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e1.printStackTrace(); |
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} |
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param_name = new String[count]; |
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param_value = new String[count]; |
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sentence = "SELECT parameter_code " +
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"FROM epsg_coordoperationparamusage " +
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"WHERE coord_op_method_code = " + proj + " " + |
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"ORDER BY sort_order ASC";
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result = Query.select(sentence,pcp.connect.getConnection());
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int i = 0; |
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try {
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while (result.next()) {
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int cod = result.getInt("parameter_code"); |
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/*
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* con el codigo del parametro, obtenemos tanto su nombre como su valor
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*/
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sentence = "SELECT parameter_name " +
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"FROM epsg_coordoperationparam " +
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"WHERE parameter_code = " + cod;
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result2 = Query.select(sentence,pcp.connect.getConnection());
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result2.next(); |
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param_name[i] = result2.getString("parameter_name");
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sentence = "SELECT parameter_value, uom_code " +
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"FROM epsg_coordoperationparamvalue " +
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"WHERE parameter_code = " + cod + " AND coord_op_code = " + coord_op_code; |
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result3 = Query.select(sentence,pcp.connect.getConnection());
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result3.next(); |
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double param_val = result3.getDouble("parameter_value"); |
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int uom_code = result3.getInt("uom_code"); |
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sentence = "SELECT factor_b, factor_c, unit_of_meas_type " +
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"FROM epsg_unitofmeasure " +
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"WHERE uom_code = " + uom_code;
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ResultSet result4 = Query.select(sentence,pcp.connect.getConnection()); |
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double factor_b = 0; |
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double factor_c = 0; |
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result4.next(); |
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String type = result4.getString("unit_of_meas_type"); |
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factor_b = result4.getDouble("factor_b");
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factor_c = result4.getDouble("factor_c");
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if (factor_b != 0 && factor_c != 0 && !type.equals("angle")){ |
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param_val = (param_val * factor_b) / factor_c; |
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} |
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else if(factor_b != 0 && factor_c != 0 && type.equals("angle")){ |
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param_val = ((param_val * factor_b) / factor_c) * (180.0 / Math.PI);; |
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}else if (uom_code == 9110){ |
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param_val = especialDegree(param_val); |
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param_val = Math.toDegrees(param_val);
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}else {
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System.out.println("C?digo de medida no v?lido..."); |
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} |
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param_value[i] = ""+param_val;
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i++; |
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} |
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} catch (SQLException e) { |
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e.printStackTrace(); |
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} |
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} |
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private double especialDegree(double val){ |
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int signo = 1; |
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double grad, min;
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double sec;
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if (val < 0){ |
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signo = -1;
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val = Math.abs(val);
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} |
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grad = Math.floor(val);
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val=(val-grad)*100.0;
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min=Math.floor(val);
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sec=(val-min)*100.0;
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val = ((grad + (min/60.0) + (sec/3600.0)) * (Math.PI/180.0)) * signo; |
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return val;
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} |
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private float round(double f,int i) |
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{
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double d=Math.pow(10.0,(double) i); |
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double aux=f*d;
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int auxi=(int) aux; |
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float df=auxi/((float) d); |
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return df;
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} |
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public String getPROJCS(){ |
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return PROJCS;
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} |
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public String getGEOGCS(){ |
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return GEOGCS;
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} |
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public String getDATUM(){ |
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return DATUM;
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} |
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public String[] getSPHEROID(){ |
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return SPHEROID;
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} |
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public String[] getPRIMEM(){ |
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return PRIMEM;
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} |
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public String getUNIT_A(){ |
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return UNIT_A;
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} |
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public String getPROJECTION(){ |
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return PROJECTION;
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} |
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public String[] getParam_name(){ |
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return param_name;
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} |
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public String[] getParam_value(){ |
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return param_value;
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} |
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public String getUNIT_B(){ |
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return UNIT_B;
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} |
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} |