Package org.apache.sis.feature.builder

Helper classes for creating Feature­Type instances.

See: Description

Class Summary

Class	Description
AssociationRoleBuilder	Describes one association from the Feature­Type to be built by an Feature­Type­Builder to another Feature­Type.
AttributeTypeBuilder<V>	Describes one Attribute­Type which will be part of the feature type to be built by a Feature­Type­Builder.
CharacteristicTypeBuilder<V>	Describes one characteristic of the Attribute­Type will will be built by a Feature­Type­Builder.
FeatureTypeBuilder	Helper class for the creation of Feature­Type instances.
PropertyTypeBuilder	Describes one property of the Feature­Type to be built by an Feature­Type­Builder.
TypeBuilder	Information common to all kind of types (feature, association, characteristics).

Enum Summary

Enum	Description
AttributeRole	Roles that can be associated to some attributes for instructing Feature­Type­Builder how to generate pre-defined operations.

Package org.apache.sis.feature.builder Description

Helper classes for creating Feature­Type instances. Usage of this package is not mandatory, but make easier to create Default­Feature­Type instances together with their attributes and associations.

The starting point is Feature­Type­Builder. The following example creates a feature type for a capital, as a special kind of city, named "Utopia" by default:

FeatureTypeBuilder builder;

// Create a feature type for a city, which contains a name and a population.
builder = new FeatureTypeBuilder() .setName("City");
builder.addAttribute(String.class) .setName("name").setDefaultValue("Utopia");
builder.addAttribute(Integer.class).setName("population");
FeatureType city = builder.build();

// Create a subclass for a city which is also a capital.
builder = new FeatureTypeBuilder().setName("Capital").setSuperTypes(city);
builder.addAttribute(String.class).setName("parliament");
FeatureType capital = builder.build();

A call to System.out.println(capital) prints the following table:

Capital ⇾ City
┌────────────┬─────────┬─────────────┬───────────────┐
│ Name       │ Type    │ Cardinality │ Default value │
├────────────┼─────────┼─────────────┼───────────────┤
│ name       │ String  │     [1 … 1] │ Utopia        │
│ population │ Integer │     [1 … 1] │               │
│ parliament │ String  │     [1 … 1] │               │
└────────────┴─────────┴─────────────┴───────────────┘

Since:

0.8

See Also:

Default­Feature­Type

Defined in the sis-feature module