Package com.vividsolutions.jump.tools

Class AttributeMapping

java.lang.Object

com.vividsolutions.jump.tools.AttributeMapping

public class AttributeMapping
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AttributeMapping.CombinedSchema

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AttributeMapping()
	AttributeMapping(FeatureSchema a, FeatureSchema b)	Constructs an AttributeMapping that will transfer all the attributes from two feature collections A and B.
	AttributeMapping(FeatureSchema aSchema, List<String> aAttributeNames, List<String> aNewAttributeNames, FeatureSchema bSchema, List<String> bAttributeNames, List<String> bNewAttributeNames)	Constructs an AttributeMapping.

Method Summary

Modifier and Type	Method	Description
AttributeMapping.CombinedSchema	createSchema(String geometryName)	Returns a new FeatureSchema with the destination attributes of the mapping and a spatial attribute with the given name
protected boolean	isDisjoint(Collection<String> a, Collection<String> b)
void	transferAttributes(Feature aFeature, Feature bFeature, Feature cFeature)	Transfers attributes (not the geometry) from two features to a third feature, using the mappings specified in the constructor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AttributeMapping

protected AttributeMapping()

AttributeMapping

public AttributeMapping(FeatureSchema a,
                        FeatureSchema b)

Constructs an AttributeMapping that will transfer all the attributes from two feature collections A and B. If A and B have attributes with the same name, they will be postfixed with _1 and _2 respectively. Case sensitive. If you only wish to map attributes for one schema, simply pass in a new FeatureSchema for the other schema.

Parameters:

a - schema for first feature collection from which to transfer attributes

b - schema for second feature collection from which to transfer attributes

AttributeMapping

public AttributeMapping(FeatureSchema aSchema,
                        List<String> aAttributeNames,
                        List<String> aNewAttributeNames,
                        FeatureSchema bSchema,
                        List<String> bAttributeNames,
                        List<String> bNewAttributeNames)

Constructs an AttributeMapping.

Parameters:

aSchema - metadata for feature-collection A

aAttributeNames - non-spatial feature-collection-A attributes to transfer

aNewAttributeNames - corresponding names in the feature collection receiving the attributes

bSchema - metadata for feature-collection B

bAttributeNames - non-spatial feature-collection-B attributes to transfer

bNewAttributeNames - corresponding names in the feature collection receiving the attributes

Method Detail

createSchema

public AttributeMapping.CombinedSchema createSchema(String geometryName)

Returns a new FeatureSchema with the destination attributes of the mapping and a spatial attribute with the given name

Parameters:

geometryName - name to assign to the spatial attribute

isDisjoint

protected boolean isDisjoint(Collection<String> a,
                             Collection<String> b)

transferAttributes

public void transferAttributes(Feature aFeature,
                               Feature bFeature,
                               Feature cFeature)

Transfers attributes (not the geometry) from two features to a third feature, using the mappings specified in the constructor. The third feature's schema must be able to accomodate the attributes being transferred.

Parameters:

aFeature - a feature from feature-collection A

bFeature - a feature from feature-collection B (can be null)

cFeature - the feature to transfer the A and B attributes to