Package org.geotools.data.wfs.impl

Class WFSContentComplexFeatureSource

Object
WFSContentComplexFeatureSource
All Implemented Interfaces:
FeatureSource<FeatureType,Feature>
public class WFSContentComplexFeatureSource extends Object implements FeatureSource<FeatureType,Feature>
Combines the WFSClient and DataAccess objects and exposes methods to access the features by using the XmlComplexFeatureParser.

  • Constructor Details

    • WFSContentComplexFeatureSource

      public WFSContentComplexFeatureSource(Name typeName, WFSClient client, WFSContentDataAccess dataAccess)
      Initialises a new instance of the class WFSContentComplexFeatureSource.
      Parameters:
      typeName - The name of the feature you want to retrieve.
      client - The WFSClient responsible for making the WFS requests.
      dataAccess - The data access object.

  • Method Details

    • getFeatures

      public FeatureCollection<FeatureType,Feature> getFeatures(Filter filter) throws IOException
      Get features based on the specified filter.
      Specified by:
      getFeatures in interface FeatureSource<FeatureType,Feature>
      Parameters:
      filter - the filter to select features; must not be null (use Filter.INCLUDE instead)
      Returns:
      features retrieved by the Filter
      Throws:
      IOException - if the underlying data source cannot be accessed.
      See Also:

    • getFeatures

      public FeatureCollection<FeatureType,Feature> getFeatures() throws IOException
      Get features using the default Query.ALL.
      Specified by:
      getFeatures in interface FeatureSource<FeatureType,Feature>
      Returns:
      features retrieved by the Query
      Throws:
      IOException - if the underlying data source cannot be accessed.

    • getFeatures

      public FeatureCollection<FeatureType,Feature> getFeatures(Query query) throws IOException
      Get features based on the query specified.
      Specified by:
      getFeatures in interface FeatureSource<FeatureType,Feature>
      Parameters:
      query - DataAccess query for requested information, such as typeName, maxFeatures and filter.
      Returns:
      features retrieved by the Query
      Throws:
      IOException - if the underlying data source cannot be accessed.
      See Also:

    • getName

      public Name getName()
      Description copied from interface: FeatureSource
      Returns the name of the features (strictly, the name of the AttributeDescriptor for the features) accessible through this FeatureSource.

      The value returned by this method can be different to that returned by featureSource.getSchema().getType().getName(). This is because there is a distinction between the name applied to features and the name of a feature type. When working with SimpleFeature and SimpleFeatureType, for example with a shapefile data source, it is common practice for feature and feature type names to be the same. However, this is not the case more generally. For instance, a database can contain two tables with the same structure. The feature name will refer to the table while the feature type name refers to the schema (table structure).

      Specified by:
      getName in interface FeatureSource<FeatureType,Feature>
      Returns:
      the name of the features accessible through this FeatureSource

    • getInfo

      public ResourceInfo getInfo()
      Description copied from interface: FeatureSource
      Returns information describing this FeatureSource which may include title, description and spatial parameters. Note that in the returned ResourceInfo object, the distinction between feature name and schema (feature type) name applies as discussed for FeatureSource.getName().
      Specified by:
      getInfo in interface FeatureSource<FeatureType,Feature>

    • getDataStore

      public DataAccess<FeatureType,Feature> getDataStore()
      Description copied from interface: FeatureSource
      Returns the data source, as a DataAccess object, providing this FeatureSource.
      Specified by:
      getDataStore in interface FeatureSource<FeatureType,Feature>
      Returns:
      the data source providing this FeatureSource

    • getQueryCapabilities

      public QueryCapabilities getQueryCapabilities()
      Description copied from interface: FeatureSource
      Enquire what what query capabilities this FeatureSource natively supports. For example, whether queries can return sorted results.
      Specified by:
      getQueryCapabilities in interface FeatureSource<FeatureType,Feature>
      Returns:
      the native query capabilities of this FeatureSource

    • addFeatureListener

      public void addFeatureListener(FeatureListener listener)
      Description copied from interface: FeatureSource
      Registers a listening object that will be notified of changes to this FeatureSource.
      Specified by:
      addFeatureListener in interface FeatureSource<FeatureType,Feature>
      Parameters:
      listener - the new listener

    • removeFeatureListener

      public void removeFeatureListener(FeatureListener listener)
      Description copied from interface: FeatureSource
      Removes an object from this FeatureSource's listeners.
      Specified by:
      removeFeatureListener in interface FeatureSource<FeatureType,Feature>
      Parameters:
      listener - the listener to remove

    • getSchema

      public FeatureType getSchema()
      Description copied from interface: FeatureSource
      Retrieves the schema (feature type) that will apply to features retrieved from this FeatureSource.

      For a homogeneous data source such as a shapefile or a database table, this schema be that of all features. For a heterogeneous data source, e.g. a GML document, the schema returned is the lowest common denominator across all features.

      Specified by:
      getSchema in interface FeatureSource<FeatureType,Feature>
      Returns:
      the schema that will apply to features retrieved from this FeatureSource

    • getBounds

      public ReferencedEnvelope getBounds() throws IOException
      Description copied from interface: FeatureSource
      Get the spatial bounds of the feature data. This is equivalent to calling getBounds(Query.ALL).

      It is possible that this method will return null if the calculation of bounds is judged to be too costly by the implementing class. In this case, you might call getFeatures().getBounds() instead.

      Specified by:
      getBounds in interface FeatureSource<FeatureType,Feature>
      Returns:
      The bounding envelope of the feature data; or null if the bounds are unknown or too costly to calculate.
      Throws:
      IOException - on any errors calculating the bounds

    • getBounds

      public ReferencedEnvelope getBounds(Query query) throws IOException
      Description copied from interface: FeatureSource
      Get the spatial bounds of the features that would be returned by the given Query.

      It is possible that this method will return null if the calculation of bounds is judged to be too costly by the implementing class. In this case, you might call getFeatures(query).getBounds() instead.

      Specified by:
      getBounds in interface FeatureSource<FeatureType,Feature>
      Parameters:
      query - the query to select features
      Returns:
      The bounding envelope of the feature data; or null if the bounds are unknown or too costly to calculate.
      Throws:
      IOException - on any errors calculating the bounds

    • getCount

      public int getCount(Query query) throws IOException
      Description copied from interface: FeatureSource
      Gets the number of the features that would be returned by the given Query, taking into account any settings for max features and start index set on the Query.

      It is possible that this method will return -1 if the calculation of number of features is judged to be too costly by the implementing class. In this case, you might call getFeatures(query).size() instead.

      Example use:

       int count = featureSource.getCount();
 if( count == -1 ){
    count = featureSource.getFeatures( "typeName", count ).size();
 }
      Specified by:
      getCount in interface FeatureSource<FeatureType,Feature>
      Parameters:
      query - the query to select features
      Returns:
      the numer of features that would be returned by the Query; or -1 if this cannot be calculated.
      Throws:
      IOException - if there are errors getting the count

    • getSupportedHints

      public Set<RenderingHints.Key> getSupportedHints()
      Description copied from interface: FeatureSource
      Returns the set of hints that this FeatureSource supports via Query requests.

      Note: the existence of a specific hint does not guarantee that it will always be honored by the implementing class.

      Specified by:
      getSupportedHints in interface FeatureSource<FeatureType,Feature>
      Returns:
      a set of RenderingHints#Key objects; may be empty but never null
      See Also: