1 |
package skrueger.db; |
package skrueger.db; |
2 |
|
|
3 |
|
import java.sql.ResultSet; |
4 |
|
import java.sql.SQLException; |
5 |
|
import java.sql.Statement; |
6 |
|
|
7 |
|
import org.apache.log4j.Logger; |
8 |
|
import org.opengis.referencing.crs.CoordinateReferenceSystem; |
9 |
|
|
10 |
|
import schmitzm.lang.LangUtil; |
11 |
|
|
12 |
/** |
/** |
13 |
* Hilfsmethoden für PostgreSQL |
* Hilfsmethoden für PostgreSQL |
14 |
*/ |
*/ |
15 |
public class PGUtil { |
public class PGUtil { |
16 |
|
static final Logger log = Logger.getLogger(PGUtil.class); |
17 |
// TODO isGeoColumn(); |
|
18 |
|
/** |
19 |
|
* Querys the <code>geometry_columns</code> table is part of every postgis |
20 |
|
* installation and must/should describe the geometry columns and tables. |
21 |
|
*/ |
22 |
|
static public String[] getColumnsDescribedInGeometryColumnsTable(Statement s) { |
23 |
|
String[] columns = new String[0]; |
24 |
|
try { |
25 |
|
ResultSet askGeoe = s |
26 |
|
.executeQuery("SELECT f_table_name FROM geometry_columns;"); |
27 |
|
while (askGeoe.next()) { |
28 |
|
columns = LangUtil.extendArray(columns, askGeoe.getString(1)); |
29 |
|
} |
30 |
|
} catch (SQLException e) { |
31 |
|
log.error(e, e); |
32 |
|
} |
33 |
|
|
34 |
|
return columns; |
35 |
|
|
36 |
|
} |
37 |
|
|
38 |
|
public static int getSridForCRS(CoordinateReferenceSystem crs) { |
39 |
|
String full = crs.toWKT().toUpperCase(); // ... |
40 |
|
// AUTHORITY["EPSG","900913"]] |
41 |
|
String s1 = "AUTHORITY[\"EPSG\",\""; |
42 |
|
int p1 = full.indexOf(s1); |
43 |
|
if (p1 >= 0) { |
44 |
|
String s = full.substring(p1 + s1.length()); |
45 |
|
int p2 = s.indexOf("\"]"); |
46 |
|
if (p2 > 0) { |
47 |
|
s = s.substring(0, p2); |
48 |
|
return Integer.parseInt(s); |
49 |
|
} |
50 |
|
} |
51 |
|
return -1; |
52 |
|
} |
53 |
|
|
54 |
|
public static void createOrUpdateGeometrsColumnsEntry(String tableName, |
55 |
|
String geoColumnName, CoordinateReferenceSystem crs) { |
56 |
|
createOrUpdateGeometrsColumnsEntry(tableName, geoColumnName, |
57 |
|
getSridForCRS(crs)); |
58 |
|
} |
59 |
|
|
60 |
|
/** |
61 |
|
* Creates or Updates |
62 |
|
* |
63 |
|
* @param tableName |
64 |
|
* @param geoColumnName |
65 |
|
* @param srid |
66 |
|
*/ |
67 |
|
public static void createOrUpdateGeometrsColumnsEntry(String tableName, |
68 |
|
String geoColumnName, int srid) { |
69 |
|
|
70 |
|
String createGeometryEntrySQL = "INSERT INTO geometry_columns (f_table_catalog, f_table_schema, f_table_name, f_geometry_column, coord_dimension, srid, \"type\") VALUES ( '', 'public', '" |
71 |
|
+ tableName |
72 |
|
+ "', '" |
73 |
|
+ geoColumnName |
74 |
|
+ "', 2, " |
75 |
|
+ srid |
76 |
|
+ ",'MULTIPOLYGON' ) LIMIT 1;"; |
77 |
|
} |
78 |
|
|
79 |
|
// TODO isGeoColumn(); |
80 |
|
|
81 |
/** |
/** |
82 |
* @param binding |
* @param binding |
83 |
* Eine "einfache" Javaklasse, die in PG abgebildet werden soll. |
* Eine "einfache" Javaklasse, die in PG abgebildet werden soll. |
84 |
* @return einen PG-spezifischen Datentypenamen für einen Javatyp zurück, z.b. "double precision" für <code>Double.class</code> |
* @return einen PG-spezifischen Datentypenamen für einen Javatyp zurück, |
85 |
|
* z.b. "double precision" für <code>Double.class</code> |
86 |
*/ |
*/ |
87 |
public static String getColTypeName(Class<?> binding) { |
public static String getColTypeName(Class<?> binding) { |
88 |
|
|