Class FilteringSimpleFeatureCollection
- All Implemented Interfaces:
SimpleFeatureCollection
,FeatureCollection<SimpleFeatureType,
SimpleFeature>
- Author:
- Justin Deoliveira, The Open Planning Project
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Constructor Summary
ConstructorsConstructorDescriptionFilteringSimpleFeatureCollection
(SimpleFeatureCollection delegate, Filter filter) FilteringSimpleFeatureCollection
(FeatureCollection<SimpleFeatureType, SimpleFeature> delegate, Filter filter) -
Method Summary
Modifier and TypeMethodDescriptionvoid
accepts
(FeatureVisitor visitor, ProgressListener progress) Visit the contents of a feature collection.void
close
(SimpleFeatureIterator close) boolean
boolean
containsAll
(Collection<?> c) features()
Obtain a SimpleFeatureIterator of the Features within this SimpleFeatureCollection.Get the total bounds of this collection which is calculated by doing a union of the bounds of each feature inside of itboolean
isEmpty()
Returns true if this feature collection contains no features.reader()
int
size()
Please note this operation may be expensive when working with remote content.Obtained sorted contents.subCollection
(Filter filter) SimpleFeatureCollection "view" indicated by provided filter.Object[]
toArray()
<T> T[]
toArray
(T[] a) Methods inherited from class DecoratingSimpleFeatureCollection
canDelegate, equals, getID, getSchema, hashCode
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Constructor Details
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FilteringSimpleFeatureCollection
public FilteringSimpleFeatureCollection(FeatureCollection<SimpleFeatureType, SimpleFeature> delegate, Filter filter) -
FilteringSimpleFeatureCollection
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Method Details
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features
Description copied from interface:SimpleFeatureCollection
Obtain a SimpleFeatureIterator of the Features within this 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(); }
- Specified by:
features
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Specified by:
features
in interfaceSimpleFeatureCollection
- Overrides:
features
in classDecoratingSimpleFeatureCollection
- Returns:
- A FeatureIterator.
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close
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subCollection
Description copied from interface:FeatureCollection
SimpleFeatureCollection "view" indicated by provided filter.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:
The above recommended use is agreement with the Collections API precident of List.subList( start, end ).collection.subCollection( filter ).clear();
The results of subCollection:
- are to be considered unordered
- may be an ordered FeatureList if requested when sortBy is indicated
- Specified by:
subCollection
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Specified by:
subCollection
in interfaceSimpleFeatureCollection
- Overrides:
subCollection
in classDecoratingSimpleFeatureCollection
- Returns:
- SimpleFeatureCollection identified as subset.
- See Also:
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FeatureList
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accepts
Description copied from interface:FeatureCollection
Visit the contents of a feature collection.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.
- Specified by:
accepts
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
accepts
in classDecoratingSimpleFeatureCollection
- Parameters:
visitor
- Closure applied to each feature in turn.progress
- Used to report progress, may be used to interrupt the operation- Throws:
IOException
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sort
Description copied from interface:FeatureCollection
Obtained sorted contents.This method may not be supported by all implementations, consider the use of FeatureSource.features( Query ).
- Specified by:
sort
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Specified by:
sort
in interfaceSimpleFeatureCollection
- Overrides:
sort
in classDecoratingSimpleFeatureCollection
- Parameters:
order
- Sort order- Returns:
- FeatureCollection sorted in the indicated order
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size
public int size()Description copied from interface:FeatureCollection
Please note this operation may be expensive when working with remote content.- Specified by:
size
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
size
in classDecoratingSimpleFeatureCollection
- See Also:
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isEmpty
public boolean isEmpty()Description copied from interface:FeatureCollection
Returns true if this feature collection contains no features.- Specified by:
isEmpty
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
isEmpty
in classDecoratingSimpleFeatureCollection
- Returns:
- true if this collection contains no features
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toArray
- Specified by:
toArray
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
toArray
in classDecoratingSimpleFeatureCollection
- See Also:
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toArray
public <T> T[] toArray(T[] a) - Specified by:
toArray
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
toArray
in classDecoratingSimpleFeatureCollection
- See Also:
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contains
- Specified by:
contains
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
contains
in classDecoratingSimpleFeatureCollection
- See Also:
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containsAll
- Specified by:
containsAll
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
containsAll
in classDecoratingSimpleFeatureCollection
- See Also:
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reader
- Throws:
IOException
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getBounds
Description copied from interface:FeatureCollection
Get the total bounds of this collection which is calculated by doing a union of the bounds of each feature inside of it- Specified by:
getBounds
in interfaceFeatureCollection<SimpleFeatureType,
SimpleFeature> - Overrides:
getBounds
in classDecoratingSimpleFeatureCollection
- Returns:
- An Envelope containing the total bounds of this collection.
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