Package org.geotools.data.geojson.store
Class GeoJSONFeatureSource
- Object
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- ContentFeatureSource
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- GeoJSONFeatureSource
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- All Implemented Interfaces:
FeatureSource<SimpleFeatureType,SimpleFeature>
,SimpleFeatureSource
public class GeoJSONFeatureSource extends ContentFeatureSource
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Field Summary
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Fields inherited from class ContentFeatureSource
entry, hints, lock, query, queryCapabilities, schema, transaction
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Constructor Summary
Constructors Constructor Description GeoJSONFeatureSource(GeoJSONDataStore datastore)
GeoJSONFeatureSource(GeoJSONDataStore datastore, Query query)
GeoJSONFeatureSource(ContentEntry entry)
GeoJSONFeatureSource(ContentEntry entry, Query query)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected SimpleFeatureType
buildFeatureType()
Creates the feature type or schema for the feature source.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.GeoJSONDataStore
getDataStore()
The datastore that this feature source originated from.protected FeatureReader<SimpleFeatureType,SimpleFeature>
getReaderInternal(Query query)
Subclass method for returning a native reader from the datastore.protected boolean
handleVisitor(Query query, FeatureVisitor visitor)
Subclass method which allows subclasses to natively handle a visitor.boolean
isQuick()
void
setQuick(boolean quick)
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Methods inherited from class ContentFeatureSource
accepts, addFeatureListener, addHints, buildQueryCapabilities, canEvent, canFilter, canFilter, canLimit, canLimit, canLock, canOffset, canOffset, canReproject, canRetype, canRetype, canSort, canSort, canTransact, doLockInternal, doUnlockInternal, getAbsoluteSchema, getBounds, getBounds, getCount, getEntry, getFeatures, getFeatures, getFeatures, getInfo, getName, getQueryCapabilities, getReader, getReader, getReader, getSchema, getState, getSupportedHints, getTransaction, getView, getView, isView, joinQuery, lockFeatures, lockFeatures, lockFeatures, processLock, removeFeatureListener, resolvePropertyNames, resolvePropertyNames, setFeatureLock, setTransaction, unLockFeatures, unLockFeatures, unLockFeatures
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Constructor Detail
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GeoJSONFeatureSource
public GeoJSONFeatureSource(ContentEntry entry, Query query)
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GeoJSONFeatureSource
public GeoJSONFeatureSource(GeoJSONDataStore datastore)
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GeoJSONFeatureSource
public GeoJSONFeatureSource(GeoJSONDataStore datastore, Query query)
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GeoJSONFeatureSource
public GeoJSONFeatureSource(ContentEntry entry)
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Method Detail
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getDataStore
public GeoJSONDataStore getDataStore()
Description copied from class:ContentFeatureSource
The datastore that this feature source originated from.Subclasses may wish to extend this method in order to type narrow its return type.
- Specified by:
getDataStore
in interfaceFeatureSource<SimpleFeatureType,SimpleFeature>
- Overrides:
getDataStore
in classContentFeatureSource
- Returns:
- the data source providing this
FeatureSource
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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 returnnull
.- Specified by:
getBoundsInternal
in classContentFeatureSource
- Throws:
IOException
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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 classContentFeatureSource
- Throws:
IOException
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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
true
:ContentFeatureSource.canReproject()
- handlesQuery.getCoordinateSystemReproject()
internally. Example would be PostGIS using Proj to handle reproejction internallyContentFeatureSource.canFilter(Query)
- handlesinternally.
- {@link #canLimit(Query)} - handles {@link Query#getMaxFeatures()} and {@link Query#getStartIndex()} internally.
- {@link #canSort(Query)} - handles {@link Query#getSortBy()} natively.
- {@link #canRetype(Query)} - 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 classContentFeatureSource
- Throws:
IOException
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buildFeatureType
protected SimpleFeatureType buildFeatureType() throws IOException
Description copied from class:ContentFeatureSource
Creates the feature type or schema for the feature source.Implementations should use
SimpleFeatureTypeBuilder
to build the feature type. Also, the builder should be injected with the feature factory which has been set on the DataStore (seeContentDataStore.getFeatureFactory()
. Example:SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder(); b.setFeatureTypeFactory( getDataStore().getFeatureTypeFactory() ); //build the feature type ...
- Specified by:
buildFeatureType
in classContentFeatureSource
- Throws:
IOException
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handleVisitor
protected boolean handleVisitor(Query query, FeatureVisitor visitor) throws IOException
Description copied from class:ContentFeatureSource
Subclass method which allows subclasses to natively handle a visitor.Subclasses would override this method and return true in cases where the specific visitor could be handled without iterating over the entire result set of query. An example would be handling visitors that calculate aggregate values.
- Overrides:
handleVisitor
in classContentFeatureSource
- Parameters:
query
- The query being made.visitor
- The visitor to- Returns:
- true if the visitor can be handled natively, otherwise false.
- Throws:
IOException
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isQuick
public boolean isQuick()
- Returns:
- the quick
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setQuick
public void setQuick(boolean quick)
- Parameters:
quick
- the quick to set
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