| java.lang.Object
 org.geotools.data.AbstractFeatureSource
org.geotools.data.AbstractFeatureStore
All known Subclasses: org.geotools.data.postgis.VersionedPostgisFeatureStore, org.geotools.data.AbstractFeatureLocking,
| AbstractFeatureStore | | abstract public class AbstractFeatureStore extends AbstractFeatureSource implements FeatureStore(Code) | | This is a starting point for providing your own FeatureStore implementation.
author:
Jody Garnett, Refractions Research |
| transaction | | protected Transaction transaction(Code) | | Current Transaction this FeatureSource is opperating against
|
| AbstractFeatureStore | | public AbstractFeatureStore()(Code) | | |
| AbstractFeatureStore | | public AbstractFeatureStore(Set hints)(Code) | | This constructors allows to set the supported hints
Parameters:
hints - |
| addFeatures | | public Set addFeatures(FeatureReader reader) throws IOException(Code) | | Add Features from reader to this FeatureStore.
Equivelent to:
Set set = new HashSet();
FeatureWriter writer = dataStore.getFeatureWriter( typeName, true, transaction );
Featrue feature, newFeature;
while( reader.hasNext() ){
feature = reader.next();
newFeature = writer.next();
newFeature.setAttributes( feature.getAttribtues( null ) );
writer.write();
set.add( newfeature.getID() );
}
reader.close();
writer.close();
return set;
(If you don't have a FeatureReader handy DataUtilities.reader() may be
able to help out)
Subclasses may override this method to perform the appropriate
optimization for this result.
Parameters:
reader - The Set of FeatureIDs added
throws:
IOException - If we encounter a problem encounter writing content
throws:
DataSourceException - See IOException
See Also: org.geotools.data.FeatureStore.addFeatures(org.geotools.data.FeatureReader) |
| getTransaction | | public Transaction getTransaction()(Code) | | Retrieve the Transaction this FeatureSource is opperating against.
Transaction FeatureSource is operating against |
| modifyFeatures | | public void modifyFeatures(AttributeType type, Object value, Filter filter) throws IOException(Code) | | Modifies features matching filter.
Equivelent to:
FeatureWriter writer = dataStore.getFeatureWriter( typeName, filter, transaction );
while( writer.hasNext() ){
feature = writer.next();
feature.setAttribute( type.getName(), value );
writer.write();
}
writer.close();
Subclasses may override this method to perform the appropriate
optimization for this result.
Parameters:
type - Attribute to modify
Parameters:
value - Modification being made to type
Parameters:
filter - Identifies features to modify
throws:
IOException - If modification could not be made |
| modifyFeatures | | public void modifyFeatures(AttributeType[] type, Object[] value, Filter filter) throws IOException(Code) | | Modifies features matching filter.
Equivelent to:
FeatureWriter writer = dataStore.getFeatureWriter( typeName, filter, transaction );
Feature feature;
while( writer.hasNext() ){
feature = writer.next();
feature.setAttribute( type[0].getName(), value[0] );
feature.setAttribute( type[1].getName(), value[1] );
...
feature.setAttribute( type[N].getName(), value[N] );
writer.write();
}
writer.close();
Subclasses may override this method to perform the appropriate
optimization for this result.
Parameters:
type - Attributes to modify
Parameters:
value - Modifications being made to type
Parameters:
filter - Identifies features to modify
throws:
IOException - If we could not modify Feature
throws:
DataSourceException - See IOException |
| removeFeatures | | public void removeFeatures(Filter filter) throws IOException(Code) | | Removes features indicated by provided filter.
Equivelent to:
FeatureWriter writer = dataStore.getFeatureWriter( typeName, filter, transaction );
Feature feature;
while( writer.hasNext() ){
feature = writer.next();
writer.remove();
}
writer.close();
Subclasses may override this method to perform the appropriate
optimization for this result.
Parameters:
filter - Identifies features to remove
throws:
IOException - |
| setFeatures | | public void setFeatures(FeatureReader reader) throws IOException(Code) | | Replace with contents of reader.
Equivelent to:
FeatureWriter writer = dataStore.getFeatureWriter( typeName, false, transaction );
Feature feature, newFeature;
while( writer.hasNext() ){
feature = writer.next();
writer.remove();
}
while( reader.hasNext() ){
newFeature = reader.next();
feature = writer.next();
newFeature.setAttributes( feature.getAttributes( null ) );
writer.write();
}
reader.close();
writer.close();
Subclasses may override this method to perform the appropriate
optimization for this result.
Parameters:
reader - Contents to replace with
throws:
IOException - if anything goes wrong during replacement
throws:
DataSourceException - See IOException |
| Fields inherited from org.geotools.data.AbstractFeatureSource | protected Set hints(Code)(Java Doc)
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