Package com.opengamma.strata.product

Class SimpleAttributes

java.lang.Object

com.opengamma.strata.product.SimpleAttributes

All Implemented Interfaces:

Attributes, Serializable, org.joda.beans.Bean, org.joda.beans.ImmutableBean

public final class SimpleAttributes
extends Object
implements Attributes, org.joda.beans.ImmutableBean, Serializable

A simple implementation of attributes.

Additional attributes can be associated with a model object. This is the simplest possible implementation.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method	Description
static SimpleAttributes	empty()	Obtains an empty instance.
boolean	equals(Object obj)
<T> Optional<T>	findAttribute(AttributeType<T> type)	Finds the attribute associated with the specified type.
static SimpleAttributes	from(Attributes other)	Obtains an instance from another instance, copying the attributes.
ImmutableMap<AttributeType<?>,Object>	getAttributes()	Gets the attributes.
ImmutableSet<AttributeType<?>>	getAttributeTypes()	Gets the attribute types that are available.
int	hashCode()
static org.joda.beans.TypedMetaBean<SimpleAttributes>	meta()	The meta-bean for SimpleAttributes.
org.joda.beans.TypedMetaBean<SimpleAttributes>	metaBean()
static <T> SimpleAttributes	of(AttributeType<T> type, T value)	Obtains an instance with a single attribute.
String	toString()
<T> SimpleAttributes	withAttribute(AttributeType<T> type, T value)	Returns a copy of this instance with the attribute added.
SimpleAttributes	withAttributes(Attributes other)	Returns a copy of this instance with the attributes added.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.opengamma.strata.product.Attributes

containsAttribute, containsAttribute, getAttribute

Methods inherited from interface org.joda.beans.Bean

property, propertyNames

Method Detail

empty

public static SimpleAttributes empty()

Obtains an empty instance.

The withAttribute(AttributeType, Object) method can be used on the instance to add attributes.

Returns:

the empty instance

of

public static <T> SimpleAttributes of(AttributeType<T> type,
                                      T value)

Obtains an instance with a single attribute.

The withAttribute(AttributeType, Object) method can be used on the instance to add more attributes.

Type Parameters:

T - the type of the attribute value

Parameters:

type - the type providing meaning to the value

value - the value

Returns:

the instance

from

public static SimpleAttributes from(Attributes other)

Obtains an instance from another instance, copying the attributes.

This can be used to ensure that an instance of Attributes contains no state apart from attributes.

Parameters:

other - the attributes to copy from

Returns:

the instance

getAttributeTypes

public ImmutableSet<AttributeType<?>> getAttributeTypes()

Description copied from interface: Attributes

Gets the attribute types that are available.

See AttributeType.captureWildcard() for a way to capture the wildcard type.

The default implementation returns an empty set (backwards compatibility prevents an abstract method for now).

Specified by:

getAttributeTypes in interface Attributes

Returns:

the attribute types

findAttribute

public <T> Optional<T> findAttribute(AttributeType<T> type)

Description copied from interface: Attributes

Finds the attribute associated with the specified type.

This method obtains the specified attribute. This allows an attribute to be obtained if available.

If the attribute is not found, optional empty is returned.

Specified by:

findAttribute in interface Attributes

Type Parameters:

T - the type of the result

Parameters:

type - the type to find

Returns:

the attribute value

withAttribute

public <T> SimpleAttributes withAttribute(AttributeType<T> type,
                                          T value)

Description copied from interface: Attributes

Returns a copy of this instance with the attribute added.

This returns a new instance with the specified attribute added. The attribute is added using Map.put(type, value) semantics.

Specified by:

withAttribute in interface Attributes

Type Parameters:

T - the type of the attribute value

Parameters:

type - the type providing meaning to the value

value - the value

Returns:

a new instance based on this one with the attribute added

withAttributes

public SimpleAttributes withAttributes(Attributes other)

Description copied from interface: Attributes

Returns a copy of this instance with the attributes added.

This returns a new instance with the specified attributes added. The attributes are added using Map.putAll(type, value) semantics.

Specified by:

withAttributes in interface Attributes

Parameters:

other - the other instance to copy from

Returns:

an instance based on this one with the attributes from the other instance

meta

public static org.joda.beans.TypedMetaBean<SimpleAttributes> meta()

The meta-bean for SimpleAttributes.

Returns:

the meta-bean, not null

metaBean

public org.joda.beans.TypedMetaBean<SimpleAttributes> metaBean()

Specified by:

metaBean in interface org.joda.beans.Bean

getAttributes

public ImmutableMap<AttributeType<?>,Object> getAttributes()

Gets the attributes.

Attributes provide the ability to associate arbitrary information in a key-value map.

Returns:

the value of the property, not null

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object