Package org.geotools.data.csv
Class CSVFeatureSource
- Object
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- ContentFeatureSource
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- CSVFeatureSource
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- All Implemented Interfaces:
FeatureSource<SimpleFeatureType,SimpleFeature>
,SimpleFeatureSource
public class CSVFeatureSource 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 CSVFeatureSource(CSVDataStore datastore)
CSVFeatureSource(CSVDataStore datastore, Query query)
CSVFeatureSource(ContentEntry entry)
CSVFeatureSource(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.CSVDataStore
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.-
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, handleVisitor, isView, joinQuery, lockFeatures, lockFeatures, lockFeatures, processLock, removeFeatureListener, resolvePropertyNames, resolvePropertyNames, setFeatureLock, setTransaction, unLockFeatures, unLockFeatures, unLockFeatures
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Constructor Detail
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CSVFeatureSource
public CSVFeatureSource(CSVDataStore datastore)
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CSVFeatureSource
public CSVFeatureSource(CSVDataStore datastore, Query query)
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CSVFeatureSource
public CSVFeatureSource(ContentEntry entry)
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CSVFeatureSource
public CSVFeatureSource(ContentEntry entry, Query query)
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Method Detail
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getDataStore
public CSVDataStore 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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