org.geotools.data.transform

Class TransformFeatureStore

Object

TransformFeatureSource

TransformFeatureStore

All Implemented Interfaces:

FeatureSource<SimpleFeatureType,SimpleFeature>, FeatureStore<SimpleFeatureType,SimpleFeature>, SimpleFeatureSource, SimpleFeatureStore

Direct Known Subclasses:

OracleTransformFeatureStore, PostgisTransformFeatureStore, SQLServerTransformFeatureStore

public class TransformFeatureStore
extends TransformFeatureSource
implements SimpleFeatureStore

A transforming feature store, will transform on the fly all attempts to write so that the underlying features are getting modified while exposing a different feature type to its callers.

Author:

Andrea Aime - GeoSolutions

Field Summary

Fields

Modifier and Type	Field and Description
protected Transformer	invertedTransformer
protected SimpleFeatureStore	store

Fields inherited from class TransformFeatureSource

FF, LOGGER, source, transformer

Constructor Summary

Constructors

Constructor and Description
TransformFeatureStore(SimpleFeatureStore store, Name name, List<Definition> definitions)

Method Summary

Modifier and Type	Method and Description
List<FeatureId>	addFeatures(FeatureCollection<SimpleFeatureType,SimpleFeature> collection) Adds all features from the feature collection.
Transaction	getTransaction() Gets the Transaction that this FeatureStore is currently operating against.
void	modifyFeatures(Name[] attributeNames, Object[] attributeValues, Filter filter) Modifies the attributes with the supplied values in all features selected by the given filter.
void	modifyFeatures(Name attributeName, Object attributeValue, Filter filter) Modifies an attribute with the supplied value in all features selected by the given filter.
void	modifyFeatures(String[] nameArray, Object[] attributeValues, Filter filter)
void	modifyFeatures(String name, Object attributeValue, Filter filter)
void	removeFeatures(Filter filter) Removes features selected by the given filter.
void	setFeatures(FeatureReader<SimpleFeatureType,SimpleFeature> reader) Deletes any existing features in the data source and then inserts new features provided by the given reader.
void	setTransaction(Transaction transaction) Provide a transaction for commit/rollback control of a modifying operation on this FeatureStore.

Methods inherited from class TransformFeatureSource

addFeatureListener, getBounds, getBounds, getCount, getDataStore, getFeatures, getFeatures, getFeatures, getInfo, getName, getQueryCapabilities, getSchema, getSupportedHints, removeFeatureListener

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface SimpleFeatureStore

getFeatures, getFeatures, getFeatures

Methods inherited from interface FeatureSource

addFeatureListener, getBounds, getBounds, getCount, getDataStore, getInfo, getName, getQueryCapabilities, getSchema, getSupportedHints, removeFeatureListener

Field Detail

store

protected SimpleFeatureStore store

invertedTransformer

protected Transformer invertedTransformer

Constructor Detail

TransformFeatureStore

public TransformFeatureStore(SimpleFeatureStore store,
                             Name name,
                             List<Definition> definitions)
                      throws IOException

Throws:

IOException

Method Detail

setTransaction

public void setTransaction(Transaction transaction)

Description copied from interface: FeatureStore

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();
 }
 

Specified by:

setTransaction in interface FeatureStore<SimpleFeatureType,SimpleFeature>

Parameters:

transaction - the transaction

getTransaction

public Transaction getTransaction()

Description copied from interface: FeatureStore

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();
 }
 

Specified by:

getTransaction in interface FeatureStore<SimpleFeatureType,SimpleFeature>

Returns:

Transaction in use, or Transaction.AUTO_COMMIT

removeFeatures

public void removeFeatures(Filter filter)
                    throws IOException

Description copied from interface: FeatureStore

Removes features selected by the given filter.

Specified by:

removeFeatures in interface FeatureStore<SimpleFeatureType,SimpleFeature>

Parameters:

filter - an OpenGIS filter

Throws:

IOException - if an error occurs modifying the data source

addFeatures

public List<FeatureId> addFeatures(FeatureCollection<SimpleFeatureType,SimpleFeature> collection)
                            throws IOException

Description copied from interface: FeatureStore

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.

Specified by:

addFeatures in interface FeatureStore<SimpleFeatureType,SimpleFeature>

Parameters:

collection - the collection of features to add

Returns:

the FeatureIds of the newly added features

Throws:

IOException - if an error occurs modifying the data source

setFeatures

public void setFeatures(FeatureReader<SimpleFeatureType,SimpleFeature> reader)
                 throws IOException

Description copied from interface: FeatureStore

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.

Specified by:

setFeatures in interface FeatureStore<SimpleFeatureType,SimpleFeature>

Parameters:

reader - - the collection to be written

Throws:

IOException - if there are any datasource errors.

modifyFeatures

public void modifyFeatures(Name[] attributeNames,
                           Object[] attributeValues,
                           Filter filter)
                    throws IOException

Description copied from interface: FeatureStore

Modifies the attributes with the supplied values in all features selected by the given filter.

Specified by:

modifyFeatures in interface FeatureStore<SimpleFeatureType,SimpleFeature>

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

public void modifyFeatures(Name attributeName,
                           Object attributeValue,
                           Filter filter)
                    throws IOException

Description copied from interface: FeatureStore

Modifies an attribute with the supplied value in all features selected by the given filter.

Specified by:

modifyFeatures in interface FeatureStore<SimpleFeatureType,SimpleFeature>

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

modifyFeatures

public void modifyFeatures(String name,
                           Object attributeValue,
                           Filter filter)
                    throws IOException

Specified by:

modifyFeatures in interface SimpleFeatureStore

Throws:

IOException

modifyFeatures

public void modifyFeatures(String[] nameArray,
                           Object[] attributeValues,
                           Filter filter)
                    throws IOException

Specified by:

modifyFeatures in interface SimpleFeatureStore

Throws:

IOException