Package org.apache.sis.internal.storage

Class MemoryFeatureSet

java.lang.Object

org.apache.sis.storage.AbstractResource

org.apache.sis.storage.AbstractFeatureSet

org.apache.sis.internal.storage.MemoryFeatureSet

All Implemented Interfaces:

DataSet, FeatureSet, Resource

public class MemoryFeatureSet
extends AbstractFeatureSet

Set of features stored in memory. Features are specified at construction time. Metadata can be specified by overriding #createMetadata(MetadataBuilder).

Since:

1.0

Version:

1.2

Field Summary

Fields

Modifier and Type	Field	Description
private final Collection<AbstractFeature>	features	The features specified at construction time, potentially as a modifiable collection.
private final DefaultFeatureType	type	The type specified at construction time and returned by getType().

Fields inherited from class org.apache.sis.storage.AbstractResource

listeners

Constructor Summary

Constructors

Constructor	Description
MemoryFeatureSet(StoreListeners parent, DefaultFeatureType type, Collection<AbstractFeature> features)	Creates a new set of features stored in memory.

Method Summary

Modifier and Type	Method	Description
Stream<AbstractFeature>	features(boolean parallel)	Returns a stream of all features contained in this dataset.
OptionalLong	getFeatureCount()	Returns the number of features in this set.
DefaultFeatureType	getType()	Returns the type common to all feature instances in this set.

Methods inherited from class org.apache.sis.storage.AbstractFeatureSet

createMetadata, getIdentifier

Methods inherited from class org.apache.sis.storage.AbstractResource

addListener, clearCache, getEnvelope, getMetadata, getSynchronizationLock, removeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.sis.storage.DataSet

getEnvelope

Methods inherited from interface org.apache.sis.storage.FeatureSet

subset

Methods inherited from interface org.apache.sis.storage.Resource

addListener, getMetadata, removeListener

Field Details

type

private final DefaultFeatureType type

The type specified at construction time and returned by getType().

features

private final Collection<AbstractFeature> features

The features specified at construction time, potentially as a modifiable collection. For all features in this collection, AbstractFeature.getType() shall be type.

Constructor Details

MemoryFeatureSet

public MemoryFeatureSet(StoreListeners parent,
 DefaultFeatureType type,
 Collection<AbstractFeature> features)

Creates a new set of features stored in memory. It is caller responsibility to ensure that AbstractFeature.getType() == type for all elements in the given collection (this is not verified).

Parameters:

parent - listeners of the parent resource, or null if none.

type - the type of all features in the given collection.

features - collection of stored features. This collection will not be copied.

Method Details

getType

public DefaultFeatureType getType()

Returns the type common to all feature instances in this set.

Returns:

a description of properties that are common to all features in this dataset.

getFeatureCount

public OptionalLong getFeatureCount()

Returns the number of features in this set.

Overrides:

getFeatureCount in class AbstractFeatureSet

Returns:

the number of features.

features

public Stream<AbstractFeature> features(boolean parallel)

Returns a stream of all features contained in this dataset.

Parameters:

parallel - true for a parallel stream (if supported), or false for a sequential stream.

Returns:

all features contained in this dataset.