Package org.geotools.data.wfs.impl

Class WFSContentDataAccess

Object
WFSContentDataAccess
All Implemented Interfaces:
DataAccess<FeatureType,Feature>
public class WFSContentDataAccess extends Object implements DataAccess<FeatureType,Feature>
DataAccess for WFS with complex features.

Using a schema parser with local storage. Could be set to a file location to avoid repeated downloads. To do this use the parameter WFSDataAccessFactory.SCHEMA_CACHE_LOCATION, or call the function setCacheLocation(File).

Author:
Adam Brown (Curtin University of Technology) Inspired by code from WFSContentDataStore and ContentDataStore.

  • Field Details

    • namespaceURI

      protected String namespaceURI
      namespace URL of the datastore itself, or default namespace

  • Constructor Details

    • WFSContentDataAccess

      public WFSContentDataAccess(WFSClient client)
      The WFS capabilities document.

  • Method Details

    • getNamespaceURI

      public String getNamespaceURI()
      The namespace URL of the datastore.
      Returns:
      The namespace URL, may be null.

    • setNamespaceURI

      public void setNamespaceURI(String namespaceURI)
      Sets the namespace URI of the datastore.

      This will be used to qualify the entries or types of the datastore.

      Parameters:
      namespaceURI - The namespace URI, may be null.

    • getInfo

      public ServiceInfo getInfo()
      Description copied from interface: DataAccess
      Information about this service.

      This method offers access to a summary of header or metadata information describing the service. Subclasses may return a specific ServiceInfo instance that has additional information (such as FilterCapabilities).

      Specified by:
      getInfo in interface DataAccess<FeatureType,Feature>
      Returns:
      SeviceInfo

    • createSchema

      public void createSchema(FeatureType featureType) throws IOException
      Description copied from interface: DataAccess
      Creates storage for a new featureType.

      The provided featureType we be accessable by the typeName provided by featureType.getTypeName().

      Specified by:
      createSchema in interface DataAccess<FeatureType,Feature>
      Parameters:
      featureType - FetureType to add to DataStore
      Throws:
      IOException - If featureType cannot be created

    • updateSchema

      public void updateSchema(Name typeName, FeatureType featureType) throws IOException
      Description copied from interface: DataAccess
      Used to update a schema in place.

      This functionality is similar to an "alter table" statement in SQL. Implementation is optional; it may not be supported by all servers or files.

      Specified by:
      updateSchema in interface DataAccess<FeatureType,Feature>
      Throws:
      IOException - if the operation failed

    • getNames

      public List<Name> getNames() throws IOException
      Populates the names map and returns a list of names.
      Specified by:
      getNames in interface DataAccess<FeatureType,Feature>
      Returns:
      Names of the available contents.
      Throws:
      IOException

    • getRemoteTypeName

      public QName getRemoteTypeName(Name localTypeName) throws IOException
      Look up a QName based on a given Name.
      Parameters:
      localTypeName - The local type name whose QName equivalent you'd like.
      Returns:
      The QName that corresponds to the Name you passed in.
      Throws:
      IOException

    • getSchema

      public FeatureType getSchema(Name name) throws IOException
      Create the FeatureType based on a call to DescribeFeatureType. Using gt-complex to parse the xsd-document, and use the schema cache.
      Specified by:
      getSchema in interface DataAccess<FeatureType,Feature>
      Parameters:
      name - Type name a the resource from getNames()
      Returns:
      Description of the FeatureType being made avaialble
      Throws:
      IOException

    • setCacheLocation

      public void setCacheLocation(File cacheLocation)
      Sets the location of the cache folder to be used by app-schema-resolver.
      Parameters:
      cacheLocation - the folder to use as the cache.

    • getFeatureSource

      public FeatureSource<FeatureType,Feature> getFeatureSource(Name typeName) throws IOException
      Description copied from interface: DataAccess
      Access to the named resource.

      The level of access is represented by the instance of the FeatureSource being returned.

      Formally:

      • FeatureSource - read-only access
      • FeatureStore - read-write access
      • FetureLocking - concurrency control
          Additional interfaces may be supported by the implementation you are using.
      Specified by:
      getFeatureSource in interface DataAccess<FeatureType,Feature>
      Returns:
      Access to the named resource being made available
      Throws:
      IOException

    • dispose

      public void dispose()
      Description copied from interface: DataAccess
      Disposes of this data store and releases any resource that it is using.

      A DataStore cannot be used after dispose has been called, neither can any data access object it helped create, such as FeatureReader, FeatureSource or FeatureCollection.

      This operation can be called more than once without side effects.

      There is no thread safety assurance associated with this method. For example, client code will have to make sure this method is not called while retrieving/saving data from/to the storage, or be prepared for the consequences.

      Specified by:
      dispose in interface DataAccess<FeatureType,Feature>

    • getSchemaParser

      protected EmfComplexFeatureReader getSchemaParser()
      Get the schema parser, creating it first if necessary.
      Returns:
      the schema parser. Guaranteed non-null.

    • removeSchema

      public void removeSchema(Name typeName) throws IOException
      Description copied from interface: DataAccess
      Used to permanently remove a schema from the underlying storage

      This functionality is similar to an "drop table" statement in SQL. Implementation is optional; it may not be supported by all servers or files.

      Specified by:
      removeSchema in interface DataAccess<FeatureType,Feature>
      Throws:
      IOException - if the operation failed