Package org.geotools.feature.simple

Class SimpleFeatureImpl

Object
SimpleFeatureImpl
All Implemented Interfaces:
Attribute, ComplexAttribute, Feature, Property, SimpleFeature
Direct Known Subclasses:
MongoFeature
public class SimpleFeatureImpl extends Object implements SimpleFeature
An implementation of SimpleFeature geared towards speed and backed by an Object[].
Author:
Justin, Andrea Aime

  • Field Details

    • id

      protected FeatureId id

    • featureType

      protected SimpleFeatureType featureType

    • values

      protected Object[] values
      The actual values held by this feature

    • index

      protected Map<String,Integer> index
      The attribute name -> position index

    • userData

      protected Map<Object,Object> userData
      The set of user data attached to the feature (lazily created)

    • attributeUserData

      protected Map<Object,Object>[] attributeUserData
      The set of user data attached to each attribute (lazily created)

    • validating

      protected boolean validating
      Whether this feature is self validating or not

  • Constructor Details

    • SimpleFeatureImpl

      public SimpleFeatureImpl(List<Object> values, SimpleFeatureType featureType, FeatureId id)
      Builds a new feature based on the provided values and feature type

    • SimpleFeatureImpl

      public SimpleFeatureImpl(Object[] values, SimpleFeatureType featureType, FeatureId id, boolean validating)
      Fast construction of a new feature.

      The object takes ownership of the provided value array, do not modify after calling the constructor

    • SimpleFeatureImpl

      public SimpleFeatureImpl(Object[] values, SimpleFeatureType featureType, FeatureId id, boolean validating, Map<String,Integer> index)
      Fast construction of a new feature.

      The object takes ownership of the provided value array, do not modify after calling the constructor

      Parameters:
      index - - attribute name to value index mapping

  • Method Details

    • getIdentifier

      public FeatureId getIdentifier()
      Description copied from interface: Feature
      A unique identifier for the feature.

      getType().isIdentifiable() must return true so this value must not return null .

      Generation of the identifier is dependent on the underlying data storage medium. Often this identifier is not persistent. Mediums such shapefiles and database tables have "keys" built in which map naturally to persistent feature identifiers. But other mediums do not have such keys and may have to generate feature identifiers "on-the-fly". This means that client code being able to depend on this value as a persistent entity is dependent on which storage medium or data source is being used.

      Specified by:
      getIdentifier in interface Attribute
      Specified by:
      getIdentifier in interface Feature
      Returns:
      The feature identifier, never null.

    • getID

      public String getID()
      Description copied from interface: SimpleFeature
      Unique Identifier for the SimpleFeature

      This value is non-null and should be the same as getIdentifier().toString(). Please note that an ID may be provided

      Specified by:
      getID in interface SimpleFeature
      Returns:
      A unique identifier for the attribute, or null if the attribute is non-identifiable.

    • getNumberOfAttributes

      public int getNumberOfAttributes()

    • getAttribute

      public Object getAttribute(int index) throws IndexOutOfBoundsException
      Description copied from interface: SimpleFeature
      Gets an attribute value by index.

      This method is a convenience for: 

       Property p = ((List)getProperties()).get( i ) ;
 return p.getValue();
      Specified by:
      getAttribute in interface SimpleFeature
      Parameters:
      index - The index of the attribute whose value to get.
      Returns:
      The attribute value at the specified index.
      Throws:
      IndexOutOfBoundsException - If the specified index is out of bounds.

    • getAttribute

      public Object getAttribute(String name)
      Description copied from interface: SimpleFeature
      Gets an attribute value by name.

      This method is a convenience for: 

       Property p = getProperty( name );
 return p.getValue();
      Specified by:
      getAttribute in interface SimpleFeature
      Parameters:
      name - The name of the attribute whose value to retrieve.
      Returns:
      The attribute value, or null if no such attribute exists with the specified name.

    • getAttribute

      public Object getAttribute(Name name)
      Description copied from interface: SimpleFeature
      Gets an attribute value by name.

      This method is a convenience for: 

       Property p = getProperty( name );
 return p.getValue();

      Since attribute names in simple features do not have a namespace uri this method is equivalent to calling getAttribute(name.getLocalPart()).

      Specified by:
      getAttribute in interface SimpleFeature
      Parameters:
      name - The name of the attribute whose value to retrieve.
      Returns:
      The attribute value, or null if no such attribute exists with the specified name.

    • getAttributeCount

      public int getAttributeCount()
      Description copied from interface: SimpleFeature
      The number of attributes the feature is composed of.

      This is a convenience for: 

         return getAttributes().size();
      Specified by:
      getAttributeCount in interface SimpleFeature
      Returns:
      Number of attributes of the feature.

    • getAttributes

      public List<Object> getAttributes()
      Description copied from interface: SimpleFeature
      Returns a list of the values of the attributes contained by the feature.

      This method is a convenience for: 

       List values = new ArrayList();
 for ( Property p : getProperties(); ) {
   values.add( p.getValue() );
 }

 return values;
      Specified by:
      getAttributes in interface SimpleFeature
      Returns:
      List of attribute values for the feature.

    • getDefaultGeometry

      public Object getDefaultGeometry()
      Description copied from interface: SimpleFeature
      Returns the value of the default geometry of the feature.

      This method is convenience for: 

       return getDefaultGeometryProperty().getValue();
      Specified by:
      getDefaultGeometry in interface SimpleFeature
      Returns:
      The default geometry, or null if no default geometry attribute exists.

    • getFeatureType

      public SimpleFeatureType getFeatureType()
      Description copied from interface: SimpleFeature
      The type of the feature.

      This method is a synonym for SimpleFeature.getType().

      Specified by:
      getFeatureType in interface SimpleFeature
      See Also:

    • getType

      public SimpleFeatureType getType()
      Description copied from interface: SimpleFeature
      Override and type narrow to SimpleFeatureType.
      Specified by:
      getType in interface Attribute
      Specified by:
      getType in interface ComplexAttribute
      Specified by:
      getType in interface Feature
      Specified by:
      getType in interface Property
      Specified by:
      getType in interface SimpleFeature
      Returns:
      The feature type
      See Also:

    • setAttribute

      public void setAttribute(int index, Object value) throws IndexOutOfBoundsException
      Description copied from interface: SimpleFeature
      Sets an attribute value by index.

      This method is a convenience for: 

       Property p = ((List)getProperties()).get( i ) ;
 p.setValue(value);
      Specified by:
      setAttribute in interface SimpleFeature
      Parameters:
      index - The index of the attribute whose value to set.
      value - The new value of the attribute.
      Throws:
      IndexOutOfBoundsException - If the specified index is out of bounds.

    • setAttribute

      public void setAttribute(String name, Object value)
      Description copied from interface: SimpleFeature
      Sets an attribute value by name.

      This method is a convenience for: 

       Property p = getProperty( name );
 p.setValue(value);
      Specified by:
      setAttribute in interface SimpleFeature
      Parameters:
      name - The name of the attribute whose value to set.
      value - The new value of the attribute.

    • setAttribute

      public void setAttribute(Name name, Object value)
      Description copied from interface: SimpleFeature
      Sets an attribute value by name.

      This method is a convenience for: 

       Property p = getProperty( name );
 p.setValue(value);

      Since attribute names in simple features do not have a namespace uri this method is equivalent to calling setAttribute(name.getLocalPart(), value).

      Specified by:
      setAttribute in interface SimpleFeature
      Parameters:
      name - The name of the attribute whose value to set.
      value - The new value of the attribute.

    • setAttributes

      public void setAttributes(List<Object> values)
      Description copied from interface: SimpleFeature
      Sets the values of the attributes contained by the feature.

      The values must be in the order of the attributes defined by the feature type.

      This method is a convenience for: 

       int i = 0;
 for ( Property p : getProperties() ) {
   p.setValue( values.get( i++ ) );
 }
      Specified by:
      setAttributes in interface SimpleFeature
      Parameters:
      values - The attribute values to set.

    • setAttributes

      public void setAttributes(Object[] values)
      Description copied from interface: SimpleFeature
      Sets the values of the attributes contained by the feature.

      The values must be in the order of the attributes defined by the feature type.

      This method is a convenience for: 

       for ( Property p : getProperties() ) {
   p.setValue( values[i] );
 }
      Specified by:
      setAttributes in interface SimpleFeature
      Parameters:
      values - The attribute values to set.

    • setDefaultGeometry

      public void setDefaultGeometry(Object geometry)
      Description copied from interface: SimpleFeature
      Sets the value of the default geometry for the feature.

      This method is convenience for: 

       getDefaultGeometryProperty().setValue(geometry);
      Specified by:
      setDefaultGeometry in interface SimpleFeature
      Parameters:
      geometry - The new default geometry value.

    • getBounds

      public BoundingBox getBounds()
      Description copied from interface: Feature
      The bounds of this Feature, if available.

      This value is derived from any geometric attributes that the feature is composed of.

      In the case that the feature has no geometric attributes this method should return an empty bounds, ie, bounds.isEmpty() == true. This method should never return null.

      The coordinate reference system of the returned bounds is derived from the geometric attributes which were used to compute the bounds. In the event that the feature contains multiple geometric attributes which have different crs's, the one defined by Feature.getDefaultGeometryProperty() should take precedence and the others should be reprojected accordingly.

      Specified by:
      getBounds in interface Feature
      Returns:
      the feature bounds, possibly empty.

    • getDefaultGeometryProperty

      public GeometryAttribute getDefaultGeometryProperty()
      Description copied from interface: Feature
      The default geometric attribute of the feature.

      This method returns null in the case where no such attribute exists.

      Specified by:
      getDefaultGeometryProperty in interface Feature
      Returns:
      The default geometry attribute, or null.

    • setDefaultGeometryProperty

      public void setDefaultGeometryProperty(GeometryAttribute geometryAttribute)
      Description copied from interface: Feature
      Sets the default geometric attribute of the feature.

      This value must be an attribute which is already defined for the feature. In other words, this method can not be used to add a new attribute to the feature.

      Specified by:
      setDefaultGeometryProperty in interface Feature
      Parameters:
      geometryAttribute - The new geomtric attribute.

    • getProperties

      public Collection<Property> getProperties()
      Description copied from interface: ComplexAttribute
      Complete collection of properties.

      This method is a convenience method for calling (Collection) getValue().

      Specified by:
      getProperties in interface ComplexAttribute
      Returns:
      The complete collection of properties.

    • getProperties

      public Collection<Property> getProperties(Name name)
      Description copied from interface: ComplexAttribute
      Returns a subset of the properties of the complex attribute which match the specified name.

      The name parameter is matched against each contained Property.getName(), those that are equal are returned.

      Specified by:
      getProperties in interface ComplexAttribute
      Parameters:
      name - The name of the properties to return.
      Returns:
      The collection of properties which match the specified name, or an empty collection if no such properties match.

    • getProperties

      public Collection<Property> getProperties(String name)
      Description copied from interface: ComplexAttribute
      Returns a subset of the properties of the complex attribute which match the specified name.

      This method is a convenience for ComplexAttribute.getProperties(Name) in which Name.getNamespaceURI() is null.

      Note: Special care should be taken when using this method in the case that two properties with the same local name but different namespace uri exist. For this reason using ComplexAttribute.getProperties(Name) is safer.

      Specified by:
      getProperties in interface ComplexAttribute
      Parameters:
      name - The local name of the properties to return.
      Returns:
      The collection of properties which match the specified name, or an empty collection if no such properties match.
      See Also:

    • getProperty

      public Property getProperty(Name name)
      Description copied from interface: ComplexAttribute
      Returns single property of the complex attribute which matches the specified name.

      Note: This method is a convenience and care should be taken when calling it if more then a single property matches name. In such a case the first encountered property in which Property.getName() is equal to name is returned, and no order is guaranteed.

      This method is a safe convenience for: getProperties(name).iterator().next().

      In the event that no property matches the specified name null is returned.

      Specified by:
      getProperty in interface ComplexAttribute
      Parameters:
      name - The name of the property to return.
      Returns:
      The property matching the specified name, or null.

    • getProperty

      public Property getProperty(String name)
      Description copied from interface: ComplexAttribute
      Returns single property of the complex attribute which matches the specified name.

      This method is a convenience for ComplexAttribute.getProperty(Name) in which Name.getNamespaceURI() is null.

      Note: This method is a convenience and care should be taken when calling it if more then a single property matches name. In such a case the first encountered property in which Property.getName() is matches name is returned, and no order is guaranteed.

      Note: Special care should be taken when using this method in the case that two properties with the same local name but different namespace uri exist. For this reason using ComplexAttribute.getProperties(Name) is safer.

      Specified by:
      getProperty in interface ComplexAttribute
      Parameters:
      name - The local name of the property to return.
      Returns:
      The property matching the specified name, or null.

    • getValue

      public Collection<? extends Property> getValue()
      Description copied from interface: ComplexAttribute
      Override of Property.getValue() which returns the collection of Property which make up the value of the complex attribute.
      Specified by:
      getValue in interface ComplexAttribute
      Specified by:
      getValue in interface Property
      Returns:
      The value of the property.

    • setValue

      public void setValue(Collection<Property> values)
      Description copied from interface: ComplexAttribute
      Sets the contained properties of the complex attribute.

      The values should match the structure defined by getDescriptor().

      Specified by:
      setValue in interface ComplexAttribute

    • setValue

      public void setValue(Object newValue)
      Description copied from interface: Property
      Sets the value or content of the property.

      The class of newValue should be the same as or a subclass of getType().getBinding().

      newValue may be null if getDescriptor().isNillable() is true.

      Specified by:
      setValue in interface Property
      Parameters:
      newValue - The new value of the property.

    • getDescriptor

      public AttributeDescriptor getDescriptor()
      Description copied from interface: Attribute
      Override of Property.getDescriptor() which type narrows to AttributeDescriptor.
      Specified by:
      getDescriptor in interface Attribute
      Specified by:
      getDescriptor in interface Property
      Returns:
      The attribute descriptor, may be null if this is a top level type
      See Also:

    • getName

      public Name getName()
      Description copied from interface: Property
      The name of the property with respect to its descriptor.

      This method is convenience for getDescriptor().getName().

      Specified by:
      getName in interface Property
      Returns:
      same name than this feature's SimpleFeatureType
      See Also:

    • isNillable

      public boolean isNillable()
      Description copied from interface: Property
      Flag indicating if null is an acceptable value for the property.

      This method is convenience for getDescriptor().isNillable().

      Specified by:
      isNillable in interface Property
      Returns:
      true if the value of the property is allowed to be null, otherwise false .

    • getUserData

      public Map<Object,Object> getUserData()
      Description copied from interface: Property
      A map of "user data" which enables applications to store "application-specific" information against a property.

      An example of information that may wish to be stored along with an attribute could be its srs information (in the case of a geometric attribute ). 

       
  GeometryAttribute attribute = ...;

  //set the crs
  CoordinateReferenceSystem crs = CRS.decode("EPSG:4326");
  attribute.setCRS( crs );

  //set the srs
  attribute.getUserData().put( "srs", "EPSG:4326" );
      Specified by:
      getUserData in interface Property
      Returns:
      A map of user data.

    • hasUserData

      public boolean hasUserData()
      Description copied from interface: Property
      Returns true if the property has a user data map. Can be used to avoid instantiation of Map object in cases where the main code paths won't have any.
      Specified by:
      hasUserData in interface Property
      Returns:
      True if there is any user data, false otherwise

    • hashCode

      public int hashCode()
      returns a unique code for this feature
      Overrides:
      hashCode in class Object
      Returns:
      A unique int

    • equals

      public boolean equals(Object obj)
      override of equals. Returns if the passed in object is equal to this.
      Overrides:
      equals in class Object
      Parameters:
      obj - the Object to test for equality.
      Returns:
      true if the object is equal, false otherwise.

    • validate

      public void validate()
      Description copied from interface: ComplexAttribute
      Check the properties against the constraints provided by their AttributeDescriptors.

      Please note this method checks minOccurs and maxOccurs information; and calls each Attribute.validate on each entry in turn (in order to check isNillable, binding and restrictions).

      Specified by:
      validate in interface Attribute
      Specified by:
      validate in interface ComplexAttribute

    • toString

      public String toString()
      Overrides:
      toString in class Object