public class FilteringSimpleFeatureCollection extends DecoratingSimpleFeatureCollection
Constructor and Description |
---|
FilteringSimpleFeatureCollection(FeatureCollection<SimpleFeatureType,SimpleFeature> delegate,
Filter filter) |
FilteringSimpleFeatureCollection(SimpleFeatureCollection delegate,
Filter filter) |
Modifier and Type | Method and Description |
---|---|
void |
accepts(FeatureVisitor visitor,
ProgressListener progress)
Visit the contents of a feature collection.
|
void |
close(SimpleFeatureIterator close) |
boolean |
contains(Object o) |
boolean |
containsAll(Collection<?> c) |
SimpleFeatureIterator |
features()
Obtain a SimpleFeatureIterator of the Features within this SimpleFeatureCollection.
|
ReferencedEnvelope |
getBounds()
Get the total bounds of this collection which is calculated by doing a union of the bounds of
each feature inside of it
|
boolean |
isEmpty()
Returns true if this feature collection contains no features.
|
FeatureReader<SimpleFeatureType,SimpleFeature> |
reader() |
int |
size()
Please note this operation may be expensive when working with remote content.
|
SimpleFeatureCollection |
sort(SortBy order)
Obtained sorted contents.
|
SimpleFeatureCollection |
subCollection(Filter filter)
SimpleFeatureCollection "view" indicated by provided filter.
|
Object[] |
toArray() |
<T> T[] |
toArray(T[] a) |
canDelegate, equals, getID, getSchema, hashCode
public FilteringSimpleFeatureCollection(FeatureCollection<SimpleFeatureType,SimpleFeature> delegate, Filter filter)
public FilteringSimpleFeatureCollection(SimpleFeatureCollection delegate, Filter filter)
public SimpleFeatureIterator features()
SimpleFeatureCollection
The implementation of FeatureIterator must adhere to the rules of fail-fast concurrent
modification. In addition (to allow for resource backed collections) the
SimpleFeatureIterator.close()
method must be called.
Example use:
SimpleFeatureIterator iterator=collection.features();
try {
while( iterator.hasNext() ){
SimpleFeature feature = iterator.next();
System.out.println( feature.getID() );
}
}
finally {
iterator.close();
}
features
in interface SimpleFeatureCollection
features
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
features
in class DecoratingSimpleFeatureCollection
public void close(SimpleFeatureIterator close)
public SimpleFeatureCollection subCollection(Filter filter)
FeatureCollection
The contents of the returned SimpleFeatureCollection are determined by applying the provider Filter to the entire contents of this FeatureCollection. The result is "live" and modifications will be shared.
This method is used cut down on the number of filter based methods required for a useful SimpleFeatureCollection construct. The FeatureCollections returned really should be considered as a temporary "view" used to control the range of a removeAll, or modify operation.
Example Use:
collection.subCollection( filter ).clear();
The above recommended use is agreement with the Collections API precident of List.subList(
start, end ).
The results of subCollection:
subCollection
in interface SimpleFeatureCollection
subCollection
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
subCollection
in class DecoratingSimpleFeatureCollection
FeatureList
public void accepts(FeatureVisitor visitor, ProgressListener progress) throws IOException
FeatureCollection
The order of traversal is dependent on the FeatureCollection implementation; some collections are able to make efficient use of an internal index in order to quickly visit features located in the same region.
accepts
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
accepts
in class DecoratingSimpleFeatureCollection
visitor
- Closure applied to each feature in turn.progress
- Used to report progress, may be used to interrupt the operationIOException
public SimpleFeatureCollection sort(SortBy order)
FeatureCollection
This method may not be supported by all implementations, consider the use of FeatureSource.features( Query ).
sort
in interface SimpleFeatureCollection
sort
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
sort
in class DecoratingSimpleFeatureCollection
order
- Sort orderpublic int size()
FeatureCollection
size
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
size
in class DecoratingSimpleFeatureCollection
Collection.size()
public boolean isEmpty()
FeatureCollection
isEmpty
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
isEmpty
in class DecoratingSimpleFeatureCollection
public Object[] toArray()
toArray
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
toArray
in class DecoratingSimpleFeatureCollection
Collection.toArray()
public <T> T[] toArray(T[] a)
toArray
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
toArray
in class DecoratingSimpleFeatureCollection
Collection.toArray(Object[])
public boolean contains(Object o)
contains
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
contains
in class DecoratingSimpleFeatureCollection
Collection.contains(Object)
public boolean containsAll(Collection<?> c)
containsAll
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
containsAll
in class DecoratingSimpleFeatureCollection
Collection.containsAll(Collection)
public FeatureReader<SimpleFeatureType,SimpleFeature> reader() throws IOException
IOException
public ReferencedEnvelope getBounds()
FeatureCollection
getBounds
in interface FeatureCollection<SimpleFeatureType,SimpleFeature>
getBounds
in class DecoratingSimpleFeatureCollection
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