BasicEntity

public abstract class BasicEntity<T> extends Entity implements Iterable<T>

Infrastructure class to enable the inheriting classes type-safe access to instances.

Constructors

BasicEntity

BasicEntity(EntityBase impl)

Constructor

Methods

get

public abstract T get()

Get the instance corresponding to a scalar entity.

Throws

• IllegalStateException – if the entity has been deleted in the underlying AMPL interpreter

• UnsupportedOperationException – if the entity is not scalar.

Returns

The corresponding instance.

get

public abstract T get(Object... key)

Get the instance corresponding to the specified key. See Access to instances and values for further information on how the key can be specified.

Parameters

• key – Key of the instance to be found.

Throws

• IllegalStateException – if the entity has been deleted in the underlying AMPL interpreter

• IllegalArgumentException – if trying to access an instance with the wrong number of keys (see Entity.indexarity)

Returns

The instance corresponding to the key, or null if the specified key is not found.

get

public abstract T get(Tuple key)

Get the instance corresponding to the specified tuple. See Access to instances and values for further information on how the key can be specified.

Parameters

• key – Key (in form of Tuple) of the instance to be found.

Throws

• IllegalStateException – if the entity has been deleted in the underlying AMPL interpreter

• IllegalArgumentException – if trying to access an instance with the wrong number of keys (see Entity.indexarity)

Returns

The instance corresponding to the key, or null if the specified key is not found.

iterator

public abstract Iterator<T> iterator()

previous

Entity

next

Instance