Package org.geotools.data.geojson

Class PagingFeatureCollection

Object

BaseFeatureCollection<SimpleFeatureType,SimpleFeature>

BaseSimpleFeatureCollection

PagingFeatureCollection

All Implemented Interfaces:

SimpleFeatureCollection, FeatureCollection<SimpleFeatureType,SimpleFeature>

public class PagingFeatureCollection
extends BaseSimpleFeatureCollection

A GeoJSON specific feature collection that can follow "next" links in order to retrieve all data

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	PagingFeatureCollection.PagingFeatureIterator

Field Summary

Fields

Modifier and Type	Field	Description
protected static final Logger	LOGGER

Fields inherited from class BaseFeatureCollection

id, schema

Constructor Summary

Constructors

Constructor	Description
PagingFeatureCollection(SimpleFeatureCollection first, ObjectNode next, Integer matched)

Method Summary

Modifier and Type	Method	Description
SimpleFeatureIterator	features()	Subclasses required to implement this method to traverse FeatureCollection contents.
protected SimpleFeatureCollection	getFirstCollection()
Integer	getMatched()	Matched header from the GeoJSON feature collection, if found, or null otherwise.
protected ObjectNode	getNext()
protected SimpleFeatureCollection	readNext(ObjectNode next)	Reads the next feature collection, or return null if there is none.
int	size()	Returns the number of elements in this collection.

Methods inherited from class BaseSimpleFeatureCollection

sort, subCollection

Methods inherited from class BaseFeatureCollection

accepts, contains, containsAll, getBounds, getID, getSchema, isEmpty, toArray, toArray

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface FeatureCollection

accepts, contains, containsAll, getBounds, getID, getSchema, isEmpty, toArray, toArray

Field Details

LOGGER

protected static final Logger LOGGER

Constructor Details

PagingFeatureCollection

public PagingFeatureCollection(SimpleFeatureCollection first,
 ObjectNode next,
 Integer matched)

Method Details

getMatched

public Integer getMatched()

Matched header from the GeoJSON feature collection, if found, or null otherwise.

size

public int size()

Description copied from class: BaseFeatureCollection

Returns the number of elements in this collection.

Specified by:

size in interface FeatureCollection<SimpleFeatureType,SimpleFeature>

Overrides:

size in class BaseFeatureCollection<SimpleFeatureType,SimpleFeature>

Returns:

Number of items, or Interger.MAX_VALUE

See Also:

• Collection.size()

features

public SimpleFeatureIterator features()

Description copied from class: BaseSimpleFeatureCollection

Subclasses required to implement this method to traverse FeatureCollection contents.

Note that FeatureIterator.close() is available to clean up after any resource use required during traversal.

Specified by:

features in interface FeatureCollection<SimpleFeatureType,SimpleFeature>

Specified by:

features in interface SimpleFeatureCollection

Specified by:

features in class BaseSimpleFeatureCollection

Returns:

A FeatureIterator.

getFirstCollection

protected SimpleFeatureCollection getFirstCollection()

getNext

protected ObjectNode getNext()

readNext

protected SimpleFeatureCollection readNext(ObjectNode next)
                                    throws IOException

Reads the next feature collection, or return null if there is none. Subclasses can override if they need a different logic for fetching the next page.

Throws:

IOException