I followed
this<http://docs.geotools.org/latest/userguide/library/data/featuresource.html>tutorial
that explains how can you update data in database, but is not working in
my case.
1. I have a method to pass parameters to connect to database:
public Map getParams() {
> Map params = new HashMap();
> params.put("dbtype", "postgis");
> params.put("host", "localhost");
> params.put("port", new Integer(5432));
> params.put("schema", "urbanenvironment");
> params.put("database", "ypenburg");
> params.put("user", "postgres");
> params.put("passwd", "postgres");
> return params;
> }
2. Create a DataStore (pgDataStore) and try to implement the various steps
of the transaction in accordance with the example in the tutorial.
- *u**e_inf_landuse* is the name of the table that I modified on the
database
- *Function* is the table column that i want to change in ue_inf_landuse
table
- The String function corresponds to the field that I want to change in the
column function
/**
>
> * Ligar a base de dados
>
> */
>
> Map params = getParams();
>
> try {
>
> pgDataStore = DataStoreFinder.getDataStore(params);
>
> SimpleFeatureStore store = (SimpleFeatureStore)
>> pgDataStore.getFeatureSource("ue_inf_landuse");
>
> Transaction transaction = new DefaultTransaction("Teste");
>
> store.setTransaction(transaction);
>
> FilterFactory ff =
>> CommonFactoryFinder.getFilterFactory(GeoTools.getDefaultHints());
>
> Filter filter = ff.id
>> (Collections.singleton(ff.featureId(ind.toStringID())));
>
>
>> SimpleFeatureType featureType = store.getSchema();
>
> try {
>
> store.modifyFeatures("function", function, filter);
>
> transaction.commit();
>
> } catch (Exception ex) {
>
> transaction.rollback();
>
> }
>
> } catch (IOException ex) {
>
> Exceptions.printStackTrace(ex);
>
> }
>
>
--
Com os melhores cumprimentos,
João Lobo
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