Package org.geotools.data.store
Class ReTypingFeatureCollection
- Object
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- DecoratingSimpleFeatureCollection
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- ReTypingFeatureCollection
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- All Implemented Interfaces:
SimpleFeatureCollection
,FeatureCollection<SimpleFeatureType,SimpleFeature>
public class ReTypingFeatureCollection extends DecoratingSimpleFeatureCollection
SimpleFeatureCollection decorator which decorates a feature collection "re-typing" its schema based on attributes specified in a query.- Author:
- Justin Deoliveira, The Open Planning Project
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Field Summary
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Fields inherited from class DecoratingSimpleFeatureCollection
delegate
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Constructor Summary
Constructors Constructor Description ReTypingFeatureCollection(SimpleFeatureCollection delegate, SimpleFeatureType featureType)
ReTypingFeatureCollection(FeatureCollection<SimpleFeatureType,SimpleFeature> delegate, SimpleFeatureType featureType)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description protected boolean
canDelegate(FeatureVisitor visitor)
Methods for subclass to override in order to determine if the supplied visitor can be passed to the delegate collection.SimpleFeatureIterator
features()
Obtain a SimpleFeatureIterator of the Features within this SimpleFeatureCollection.SimpleFeatureType
getSchema()
The schema for the child feature members of this collection.static boolean
isTypeCompatible(FeatureVisitor visitor, SimpleFeatureType featureType)
Checks if the visitor is accessing only properties available in the specified feature type, or as a special case, if it's a count visitor accessing no properties at allFeatureReader<SimpleFeatureType,SimpleFeature>
reader()
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Methods inherited from class DecoratingSimpleFeatureCollection
accepts, contains, containsAll, equals, getBounds, getID, hashCode, isEmpty, size, sort, subCollection, toArray, toArray
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Constructor Detail
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ReTypingFeatureCollection
public ReTypingFeatureCollection(FeatureCollection<SimpleFeatureType,SimpleFeature> delegate, SimpleFeatureType featureType)
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ReTypingFeatureCollection
public ReTypingFeatureCollection(SimpleFeatureCollection delegate, SimpleFeatureType featureType)
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Method Detail
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getSchema
public SimpleFeatureType getSchema()
Description copied from interface:FeatureCollection
The schema for the child feature members of this collection.Represents the most general FeatureType in common to all the features in this collection.
- For a collection backed by a shapefiles (or database tables) the FeatureType returned by getSchema() will complete describe each and every child in the collection.
- For mixed content FeatureCollections you will need to check the FeatureType of each Feature as it is retrived from the collection
- The degenerate case returns the "_Feature" FeatureType, where the only thing known is that the contents are Features.
- Specified by:
getSchema
in interfaceFeatureCollection<SimpleFeatureType,SimpleFeature>
- Overrides:
getSchema
in classDecoratingSimpleFeatureCollection
- Returns:
- FeatureType describing the "common" schema to all child features of this collection
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reader
public FeatureReader<SimpleFeatureType,SimpleFeature> reader() throws IOException
- Throws:
IOException
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features
public SimpleFeatureIterator 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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canDelegate
protected boolean canDelegate(FeatureVisitor visitor)
Description copied from class:DecoratingSimpleFeatureCollection
Methods for subclass to override in order to determine if the supplied visitor can be passed to the delegate collection.The default is false and the visitor receives the decoraeted features.
- Overrides:
canDelegate
in classDecoratingSimpleFeatureCollection
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isTypeCompatible
public static boolean isTypeCompatible(FeatureVisitor visitor, SimpleFeatureType featureType)
Checks if the visitor is accessing only properties available in the specified feature type, or as a special case, if it's a count visitor accessing no properties at all
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