org.geotools.vectormosaic

Class VectorMosaicFeatureSource

Object

ContentFeatureSource

VectorMosaicFeatureSource

All Implemented Interfaces:

FeatureSource<SimpleFeatureType,SimpleFeature>, SimpleFeatureSource

public class VectorMosaicFeatureSource
extends ContentFeatureSource

FeatureSource for a vector mosaic.

Field Summary

Fields

Modifier and Type	Field and Description
protected FilterTracker	filterTracker
protected Set<String>	granuleTracker

Fields inherited from class ContentFeatureSource

entry, hints, lock, query, queryCapabilities, schema, transaction

Constructor Summary

Constructors

Constructor and Description
VectorMosaicFeatureSource(ContentEntry contentEntry, VectorMosaicStore store) VectorMosaicFeatureSource constructor.

Method Summary

Modifier and Type	Method and Description
protected SimpleFeatureType	buildFeatureType() Uses first granule to build a schema for the target feature type
protected ReferencedEnvelope	getBoundsInternal(Query query) Calculates the bounds of a specified query.
protected int	getCountInternal(Query query) Calculates the number of features of a specified query.
protected SimpleFeatureType	getFeatureType(SimpleFeatureType indexFeatureType, SimpleFeatureType granuleFeatureType) Builds a feature type for the target feature source by merging the index feature type with the granule feature type
protected SimpleFeatureType	getGranuleType() Get the feature type for the granules.
protected FeatureReader<SimpleFeatureType,SimpleFeature>	getReaderInternal(Query query) Subclass method for returning a native reader from the datastore.
protected Filter	getSplitFilter(Query query, DataStore dataStore, String typeName, boolean isDelegate)
VectorMosaicStore	getStore() Get the FeatureStore for the feature source.
void	initGranule(VectorMosaicGranule granule, boolean isSampleForType) Initializes the granule by setting the data store and granule type name
protected boolean	isNotMandatoryIndexType(AttributeDescriptor descriptor) Checks if the attribute descriptor is not a mandatory index type

Methods inherited from class ContentFeatureSource

accepts, addFeatureListener, addHints, buildQueryCapabilities, canEvent, canFilter, canLimit, canLock, canOffset, canReproject, canRetype, canSort, canTransact, doLockInternal, doUnlockInternal, getAbsoluteSchema, getBounds, getBounds, getCount, getDataStore, getEntry, getFeatures, getFeatures, getFeatures, getInfo, getName, getQueryCapabilities, getReader, getReader, getReader, getSchema, getState, getSupportedHints, getTransaction, getView, getView, handleVisitor, isView, joinQuery, lockFeatures, lockFeatures, lockFeatures, processLock, removeFeatureListener, resolvePropertyNames, resolvePropertyNames, setFeatureLock, setTransaction, unLockFeatures, unLockFeatures, unLockFeatures

Methods inherited from class Object

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

Field Detail

filterTracker

protected FilterTracker filterTracker

granuleTracker

protected Set<String> granuleTracker

Constructor Detail

VectorMosaicFeatureSource

public VectorMosaicFeatureSource(ContentEntry contentEntry,
                                 VectorMosaicStore store)

VectorMosaicFeatureSource constructor.

Parameters:

contentEntry - The content entry for the feature source.

store - The data store for the feature source.

Method Detail

getStore

public VectorMosaicStore getStore()

Get the FeatureStore for the feature source.

Returns:

The FeatureStore for the feature source.

getSplitFilter

protected Filter getSplitFilter(Query query,
                                DataStore dataStore,
                                String typeName,
                                boolean isDelegate)

getBoundsInternal

protected ReferencedEnvelope getBoundsInternal(Query query)
                                        throws IOException

Description copied from class: ContentFeatureSource

Calculates the bounds of a specified query. Subclasses must implement this method. If the computation is not fast, subclasses can return null.

Specified by:

getBoundsInternal in class ContentFeatureSource

Throws:

IOException

getCountInternal

protected int getCountInternal(Query query)
                        throws IOException

Description copied from class: ContentFeatureSource

Calculates the number of features of a specified query. Subclasses must implement this method. If the computation is not fast, it's possible to return -1.

Specified by:

getCountInternal in class ContentFeatureSource

Throws:

IOException

getReaderInternal

protected FeatureReader<SimpleFeatureType,SimpleFeature> getReaderInternal(Query query)
                                                                    throws IOException

Description copied from class: ContentFeatureSource

Subclass method for returning a native reader from the datastore.

It is important to note that if the native reader intends to handle any of the following natively:

• reprojection
• filtering
• max feature limiting
• sorting
• locking
• transactions

Then it *must* set the corresponding flags to true:

• ContentFeatureSource.canReproject() - handles Query.getCoordinateSystemReproject() internally. Example would be PostGIS using Proj to handle reproejction internally
• ContentFeatureSource.canFilter() - handles Query#getFilter() internally.
• {@link #canLimit()} - handles {@link Query#getMaxFeatures()} and {@link Query#getStartIndex()} internally.
• {@link #canSort()} - handles {@link Query#getSortBy()} natively.
• {@link #canRetype()} - handles {@link Query#getProperties()} natively. Example would be only parsing the properties the user asks for from an XML file
• {@link #canLock()} - handles read-locks natively
• {@link #canTransact()} - handles transactions natively

Specified by:

getReaderInternal in class ContentFeatureSource

Throws:

IOException

buildFeatureType

protected SimpleFeatureType buildFeatureType()
                                      throws IOException

Uses first granule to build a schema for the target feature type

Specified by:

buildFeatureType in class ContentFeatureSource

Returns:

the schema

Throws:

IOException - If feature type can't be built or found

getGranuleType

protected SimpleFeatureType getGranuleType()
                                    throws IOException

Get the feature type for the granules.

Returns:

the feature type for the granules.

Throws:

IOException - if the feature type can't be found.

getFeatureType

protected SimpleFeatureType getFeatureType(SimpleFeatureType indexFeatureType,
                                           SimpleFeatureType granuleFeatureType)
                                    throws IOException

Builds a feature type for the target feature source by merging the index feature type with the granule feature type

Parameters:

indexFeatureType - the index feature type

granuleFeatureType - the granule feature type

Returns:

the merged feature type

Throws:

IOException - if feature type can't be built

isNotMandatoryIndexType

protected boolean isNotMandatoryIndexType(AttributeDescriptor descriptor)

Checks if the attribute descriptor is not a mandatory index type

Parameters:

descriptor - the attribute descriptor

Returns:

true if not mandatory index type

initGranule

public void initGranule(VectorMosaicGranule granule,
                        boolean isSampleForType)
                 throws IOException

Initializes the granule by setting the data store and granule type name

Parameters:

granule - the granule

Throws:

IOException - if data store can't be found