Package org.geotools.data.sort
Class SortedFeatureIterator
Object
SortedFeatureIterator
- All Implemented Interfaces:
Closeable
,AutoCloseable
,SimpleFeatureIterator
,FeatureIterator<SimpleFeature>
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Constructor Summary
ConstructorsConstructorDescriptionSortedFeatureIterator
(SimpleFeatureIterator iterator, SimpleFeatureType schema, SortBy[] sortBy, int maxFeatures) Builds a new sorting feature iterator -
Method Summary
Modifier and TypeMethodDescriptionstatic final boolean
canSort
(SimpleFeatureType schema, SortBy... sortBy) Checks if the schema and the sortBy are suitable for merge/sort.void
close()
Closes this iterator and releases any system resources associated with it.boolean
hasNext()
Does another Feature exist in this Iteration.next()
Get the next Feature in this iteration.
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Constructor Details
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SortedFeatureIterator
public SortedFeatureIterator(SimpleFeatureIterator iterator, SimpleFeatureType schema, SortBy[] sortBy, int maxFeatures) throws IOException Builds a new sorting feature iterator- Parameters:
iterator
- The iterator to be sortedschema
- The iterator schemasortBy
- The sorting directivesmaxFeatures
- The maximum number of features to keep in memory, or a negative number to use the system default- Throws:
IOException
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Method Details
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canSort
Checks if the schema and the sortBy are suitable for merge/sort. All attributes need to beSerializable
, all sorting attributes need to beComparable
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hasNext
public boolean hasNext()Description copied from interface:FeatureIterator
Does another Feature exist in this Iteration.Iterator defin: Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)
- Specified by:
hasNext
in interfaceFeatureIterator<SimpleFeature>
- Returns:
- true if more Features exist, false otherwise.
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next
Description copied from interface:FeatureIterator
Get the next Feature in this iteration.- Specified by:
next
in interfaceFeatureIterator<SimpleFeature>
- Returns:
- The next Feature
- Throws:
NoSuchElementException
- If no more Features exist.
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close
public void close()Description copied from interface:FeatureIterator
Closes this iterator and releases any system resources associated with it.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in interfaceFeatureIterator<SimpleFeature>
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