Examples of org.opengis.feature.Attribute

org.opengis.feature.Attribute
An extension of Property for an attribute, or data.
The notion of an "attribute" is similar to that of an attribute in UML.

This interface is capable of modelling "primitive data", things like strings, numerics, dates, etc... However for "complex data" (that is non-primitive data types which are made up other primitive data types), a specific sub-interface is used, see {@link ComplexAttribute}.

An analogy for an attribute is a "field" in a java object. A field also brings together a field name, value and type.

Identifiable
When an attribute is identifiable the {@link #getID()} method returns aunique identifier for the attribute. The type of the attribute is used to determine identifiability.
```
 Attribute attribute = ...; if ( attribute.getType().isIdentified() ) { String id = attribute.getID(); } 
```
Validation
An attribute may hold any value at runtime; checking that the value meets the constraints supplied by the AttributeType is the work of the validate() method. @see Property @author Jody Garnett (Refractions Research) @author Justin Deoliveira (The Open Planning Project) @source $URL$

                    polymorphicTypeName.getLocalPart(), this.namespaces
                            .getPrefix(polymorphicTypeName.getNamespaceURI())), 1));
            if (!fTypeMapping.getFeatureIdExpression().equals (Expression.NIL)) {
                id = fTypeMapping.getFeatureIdExpression().evaluate(source, String.class);
            }
            Attribute instance = xpathAttributeBuilder.set(target, prefixedXpath, null, id,
                    type, false, attDescriptor, null);
            setClientProperties(instance, source, clientPropsMappings);
            for (AttributeMapping mapping : polymorphicMappings) {
                if (skipTopElement(polymorphicTypeName, mapping, type)) {
                    // if the top level mapping for the Feature itself, the attribute instance

View Full Code Here

                        }
                    }
                }
            }
            if (!exists) {
                Attribute instance = xpathAttributeBuilder.set(target, xpath, null, null,
                        targetNodeType, true, null);
                setClientProperties(instance, singleVal, clientPropsMappings);
            }
        }
    }

View Full Code Here

                    // ignore the top level mapping for the Feature itself
                    // as it was already set
                    continue;
                }
                if (attMapping.isList()) {
                    Attribute instance = setAttributeValue(target, null, sources.get(0),
                            attMapping, null, null, selectedProperties.get(attMapping));
                    if (sources.size() > 1 && instance != null) {
                        List<Object> values = new ArrayList<Object>();
                        Expression sourceExpr = attMapping.getSourceExpression();
                        for (Feature source : sources) {
                            values.add(getValue(sourceExpr, source));                        
                        }
                        String valueString = StringUtils.join(values.iterator(), " ");
                        StepList fullPath = attMapping.getTargetXPath();
                        StepList leafPath = fullPath.subList(fullPath.size() - 1, fullPath.size());
                        if (instance instanceof ComplexAttributeImpl) {              
                            // xpath builder will work out the leaf attribute to set values on
                            xpathAttributeBuilder.set(instance, leafPath, valueString, null, null,
                                    false, sourceExpr);
                        } else {
                            // simple attributes
                          instance.setValue(valueString);
                        }
                    }
                } else if (attMapping.isMultiValued()) {
                    // extract the values from multiple source features of the same id
                    // and set them to one built feature

View Full Code Here


    if (!super.equals(obj)) {
        return false;
    }
    
    Attribute att = (Attribute) obj;
    
    return Utilities.equals( id, att.getIdentifier() );
  }

View Full Code Here

            ComplexAttribute complex = (ComplexAttribute) attribute;
            Collection properties = (Collection) complex.getValue();
            for (Iterator itr = properties.iterator(); itr.hasNext();) {
                Property property = (Property) itr.next();
                if (property instanceof Attribute) {
                    Attribute att = (Attribute) property;
                    add(att.getIdentifier() == null ? null : att.getIdentifier().toString(), att
                            .getValue(), att.getName());
                } else if (property instanceof Association) {
                    Association assoc = (Association) property;
                    associate(assoc.getValue(), assoc.getName());
                }
            }

View Full Code Here

     *                The value of the attribute.
     * 
     */
    public Attribute add(String id, Object value, Name name) {
        AttributeDescriptor descriptor = attributeDescriptor(name);
        Attribute attribute = create(value, null, descriptor, id);
        properties().add(attribute);
        return attribute;
    }

View Full Code Here

     *                The id of the attribute, or null.
     * 
     * @return The build attribute.
     */
    public Attribute build(String id) {
        Attribute built = create(properties(), type, descriptor, id);


        // FIXME
        // // if geometry, set the crs
        // if (built instanceof GeometryAttribute) {
        // ((GeometryAttribute) built).getDescriptor().setCRS(getCRS());
        // }


        // if feature, set crs and default geometry
        if (built instanceof Feature) {
            Feature feature = (Feature) built;
            // FIXME feature.setCRS(getCRS());
            if (defaultGeometry != null) {
                for (Iterator itr = feature.getProperties().iterator(); itr.hasNext();) {
                    Attribute att = (Attribute) itr.next();
                    if (att instanceof GeometryAttribute) {
                        if (defaultGeometry.equals(att.getValue())) {
                            feature.setDefaultGeometryProperty((GeometryAttribute) att);
                        }
                    }


                }

View Full Code Here

     * @param id
     * @return
     */
    public Attribute addAnyTypeValue(Object value, AttributeType type,
            AttributeDescriptor descriptor, String id) {
        Attribute attribute = create(value, type, descriptor, id);
        properties().add(attribute);
        return attribute;
    }

View Full Code Here

    public static SimpleFeature build( SimpleFeatureType ft, Object atts[], String fid ){
        LenientFeatureFactory featureFactory = new LenientFeatureFactory();
        List<Attribute> properties = new ArrayList<Attribute>();
        for( int i=0; i<atts.length;i++){
            Object value = atts[i];
            Attribute property = featureFactory.createAttribute(value, ft.getDescriptor(i), null);
            properties.add(property);            
        }
        return featureFactory.createSimpleFeature(properties, ft, fid );
    }

View Full Code Here

      if( obj instanceof SimpleFeature){
          SimpleFeature feature = (SimpleFeature) obj;
          return feature.getID();
      }
      if( obj instanceof Attribute){
        Attribute attribute = (Attribute) obj;
          return attribute.getIdentifier().getID();
      }
    return ""; // no ID
  }

View Full Code Here

0 1 2 3

TOP

Related Classes of org.opengis.feature.Attribute

MainView

org.geoserver.csw.records.GenericRecordBuilder

org.geoserver.csw.store.simple.SimpleCatalogStoreTest

org.geotools.arcsde.data.ArcSDEFeatureStoreTest

org.geotools.data.complex.AbstractMappingFeatureIterator

org.geotools.data.complex.BoreholeTest

org.geotools.data.complex.DataAccessMappingFeatureIterator

org.geotools.data.complex.filter.XPath

org.geotools.data.complex.TimeSeriesTest

org.geotools.data.complex.XmlDataStoreTest

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

Examples of org.opengis.feature.Attribute

Identifiable

Validation

Related Classes of org.opengis.feature.Attribute