Package org.geotools.api.data

Interface FeatureStore<T extends FeatureType,F extends Feature>

All Superinterfaces:
FeatureSource<T,F>
All Known Subinterfaces:
FeatureLocking<T,F>, SimpleFeatureLocking, SimpleFeatureStore
All Known Implementing Classes:
ContentFeatureStore, CSVFeatureStore, DirectoryFeatureLocking, DirectoryFeatureStore, GeoJSONFeatureStore, JDBCFeatureStore, MemoryFeatureStore, MongoFeatureStore, OracleTransformFeatureStore, PostgisTransformFeatureStore, PropertyFeatureStore, SQLServerTransformFeatureStore, TransformFeatureLocking, TransformFeatureStore
public interface FeatureStore<T extends FeatureType,F extends Feature> extends FeatureSource<T,F>
This interface extends FeatureSource, adding methods to add and remove features and to modify existing features. 

 DataStore myDataStore = ...
 FeatureSource featureSource = myDataStore.getFeatureSource("aname");
 if (featureSource instanceof FeatureStore) {
     // we have write access to the feature data
     FeatureStore featureStore = (FeatureStore) featureSource;

     // add some new features
     Transaction t = new DefaultTransaction("add");
     featureStore.setTransaction(t);
     try {
         featureStore.addFeatures( someFeatures );
         t.commit();
     } catch (Exception ex) {
        java.util.logging.Logger.getGlobal().log(java.util.logging.Level.INFO, "", ex);
         t.rollback();
     } finally {
         t.close();
     }
 }
Author:
Jody Garnett, Ray Gallagher, Rob Hranac, TOPP, Chris Holmes, TOPP

  • Method Details

    • addFeatures

      List<FeatureId> addFeatures(FeatureCollection<T,F> featureCollection) throws IOException
      Adds all features from the feature collection.

      A list of FeatureIds is returned, one for each feature in the order created. However, these might not be assigned until after a commit has been performed.

      Parameters:
      featureCollection - the collection of features to add
      Returns:
      the FeatureIds of the newly added features
      Throws:
      IOException - if an error occurs modifying the data source

    • removeFeatures

      void removeFeatures(Filter filter) throws IOException
      Removes features selected by the given filter.
      Parameters:
      filter - an OpenGIS filter
      Throws:
      IOException - if an error occurs modifying the data source

    • modifyFeatures

      void modifyFeatures(Name[] attributeNames, Object[] attributeValues, Filter filter) throws IOException
      Modifies the attributes with the supplied values in all features selected by the given filter.
      Parameters:
      attributeNames - the attributes to modify
      attributeValues - the new values for the attributes
      filter - an OpenGIS filter
      Throws:
      IOException - if the attribute and object arrays are not equal in length; if the value types do not match the attribute types; if modification is not supported; or if there errors accessing the data source

    • modifyFeatures

      void modifyFeatures(Name attributeName, Object attributeValue, Filter filter) throws IOException
      Modifies an attribute with the supplied value in all features selected by the given filter.
      Parameters:
      attributeName - the attribute to modify
      attributeValue - the new value for the attribute
      filter - an OpenGIS filter
      Throws:
      IOException - if modification is not supported; if the value type does not match the attribute type; or if there errors accessing the data source

    • setFeatures

      void setFeatures(FeatureReader<T,F> reader) throws IOException
      Deletes any existing features in the data source and then inserts new features provided by the given reader. This is primarily used as a convenience method for file-based data sources.
      Parameters:
      reader - - the collection to be written
      Throws:
      IOException - if there are any datasource errors.

    • setTransaction

      void setTransaction(Transaction transaction)
      Provide a transaction for commit/rollback control of a modifying operation on this FeatureStore. 
      
 Transaction t = new DefaultTransaction();
 featureStore.setTransaction(t);
 try {
     featureStore.addFeatures( someFeatures );
     t.commit();
 } catch ( IOException ex ) {
     // something went wrong;
    java.util.logging.Logger.getGlobal().log(java.util.logging.Level.INFO, "", ex);
     t.rollback();
 } finally {
     t.close();
 }
      Parameters:
      transaction - the transaction

    • getTransaction

      Transaction getTransaction()
      Gets the Transaction that this FeatureStore is currently operating against. 
      
 Transaction t = featureStore.getTransaction();
 try {
     featureStore.addFeatures( features );
     t.commit();
 } catch( IOException erp ){
     // something went wrong;
    java.util.logging.Logger.getGlobal().log(java.util.logging.Level.INFO, "", ex);
     t.rollback();
 }
      Returns:
      Transaction in use, or Transaction.AUTO_COMMIT