javax.money

Class AbstractContext

java.lang.Object

javax.money.AbstractContext

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AbstractQuery, AmountFormatContext, ConversionContext, CurrencyContext, MonetaryContext, ProviderContext, RoundingContext

public abstract class AbstractContext
extends Object
implements Serializable

Represents a general context of data targeting an item of type Q. Contexts are used to add arbitrary data that cannot be be mapped in a standard way to the money API, e.g. use case or customer specific extensions os specialities.

Superclasses of this class must be final, immutable, serializable and thread-safe.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	KEY_PROVIDER Key for storing the target providers to be queried

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractContext(AbstractContextBuilder<?,?> builder) Private constructor, used by AbstractContextBuilder.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
<T> T	get(Class<T> type) Access an attribute, hereby using the class name as key.
<T> T	get(String key, Class<T> type) Access an attribute.
Boolean	getBoolean(String key) Access a Boolean attribute.
Double	getDouble(String key) Access a Double attribute.
Float	getFloat(String key) Access a Float attribute.
Integer	getInt(String key) Access an Integer attribute.
Set<String>	getKeys(Class<?> type) Get the present keys of all entries with a given type, checking hereby if assignable.
Long	getLong(String key) Access a Long attribute.
String	getProviderName() Get the provider name of this context.
String	getText(String key) Access a String attribute.
Class<?>	getType(String key) Get the current attribute type.
int	hashCode()
boolean	isEmpty() Checks if the current instance has no attributes set.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

KEY_PROVIDER

protected static final String KEY_PROVIDER

Key for storing the target providers to be queried

See Also:

Constant Field Values

Constructor Detail

AbstractContext

protected AbstractContext(AbstractContextBuilder<?,?> builder)

Private constructor, used by AbstractContextBuilder.

Parameters:

builder - the Builder.

Method Detail

getKeys

public Set<String> getKeys(Class<?> type)

Get the present keys of all entries with a given type, checking hereby if assignable.

Parameters:

type - The attribute type, not null.

Returns:

all present keys of attributes being assignable to the type, never null.

getType

public Class<?> getType(String key)

Get the current attribute type.

Parameters:

key - the entry's key, not null

Returns:

the current attribute type, or null, if no such attribute exists.

get

public <T> T get(String key,
                 Class<T> type)

Access an attribute.

Parameters:

type - the attribute's type, not null

key - the attribute's key, not null

Returns:

the attribute value, or null.

get

public <T> T get(Class<T> type)

Access an attribute, hereby using the class name as key.

Parameters:

type - the type, not null

Returns:

the type attribute value, or null.

getLong

public Long getLong(String key)

Access a Long attribute.

Parameters:

key - the attribute's key, not null.

Returns:

the value, or null.

getFloat

public Float getFloat(String key)

Access a Float attribute.

Parameters:

key - the attribute's key, not null.

Returns:

the value, or null.

getInt

public Integer getInt(String key)

Access an Integer attribute.

Parameters:

key - the attribute's key, not null.

Returns:

the value, or null.

getBoolean

public Boolean getBoolean(String key)

Access a Boolean attribute.

Parameters:

key - the attribute's key, not null.

Returns:

the value, or null.

getDouble

public Double getDouble(String key)

Access a Double attribute.

Parameters:

key - the attribute's key, not null.

Returns:

the value, or null.

getText

public String getText(String key)

Access a String attribute.

Parameters:

key - the attribute's key, not null.

Returns:

the value, or null.

getProviderName

public String getProviderName()

Get the provider name of this context.

Returns:

the provider name, or null.

isEmpty

public boolean isEmpty()

Checks if the current instance has no attributes set. This is often the cases, when used in default cases.

Returns:

true, if no attributes are set.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object