Package org.springframework.data.mapping

Class PreferredConstructor<T,P extends PersistentProperty<P>>

java.lang.Object

org.springframework.data.mapping.PreferredConstructor<T,P>

public class PreferredConstructor<T,P extends PersistentProperty<P>>
extends Object

Value object to encapsulate the constructor to be used when mapping persistent data to objects.

Author:

Oliver Gierke, Jon Brisbin, Thomas Darimont, Christoph Strobl, Mark Paluch, Myeonghyeon Lee, Xeno Amess

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PreferredConstructor.Parameter<T,P extends PersistentProperty<P>>	Value object to represent constructor parameters.

Constructor Summary

Constructors

Constructor	Description
PreferredConstructor(Constructor<T> constructor, PreferredConstructor.Parameter<Object,P>... parameters)	Creates a new PreferredConstructor from the given Constructor and PreferredConstructor.Parameters.

Method Summary

Modifier and Type	Method	Description
Constructor<T>	getConstructor()	Returns the underlying Constructor.
List<PreferredConstructor.Parameter<Object,P>>	getParameters()	Returns the PreferredConstructor.Parameters of the constructor.
boolean	hasParameters()	Returns whether the constructor has PreferredConstructor.Parameters.
boolean	isConstructorParameter(PersistentProperty<?> property)	Returns whether the given PersistentProperty is referenced in a constructor argument of the PersistentEntity backing this PreferredConstructor.
boolean	isEnclosingClassParameter(PreferredConstructor.Parameter<?,P> parameter)	Returns whether the given PreferredConstructor.Parameter is one referring to an enclosing class.
boolean	isExplicitlyAnnotated()	Returns whether the constructor was explicitly selected (by PersistenceConstructor).
boolean	isNoArgConstructor()	Returns whether the constructor does not have any arguments.

Methods inherited from class java.lang.Object

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

Constructor Details

PreferredConstructor

@SafeVarargs
public PreferredConstructor(Constructor<T> constructor,
 PreferredConstructor.Parameter<Object,P>... parameters)

Creates a new PreferredConstructor from the given Constructor and PreferredConstructor.Parameters.

Parameters:

constructor - must not be null.

parameters - must not be null.

Method Details

getConstructor

public Constructor<T> getConstructor()

Returns the underlying Constructor.

Returns:

getParameters

public List<PreferredConstructor.Parameter<Object,P>> getParameters()

Returns the PreferredConstructor.Parameters of the constructor.

Returns:

hasParameters

public boolean hasParameters()

Returns whether the constructor has PreferredConstructor.Parameters.

Returns:

See Also:

• isNoArgConstructor()

isNoArgConstructor

public boolean isNoArgConstructor()

Returns whether the constructor does not have any arguments.

Returns:

See Also:

• hasParameters()

isExplicitlyAnnotated

public boolean isExplicitlyAnnotated()

Returns whether the constructor was explicitly selected (by PersistenceConstructor).

Returns:

isConstructorParameter

public boolean isConstructorParameter(PersistentProperty<?> property)

Returns whether the given PersistentProperty is referenced in a constructor argument of the PersistentEntity backing this PreferredConstructor.

Results of this call are cached and reused on the next invocation. Calling this method for a PersistentProperty that was not yet added to its owning PersistentEntity will capture that state and return the same result after adding PersistentProperty to its entity.

Parameters:

property - must not be null.

Returns:

true if the PersistentProperty is used in the constructor.

isEnclosingClassParameter

public boolean isEnclosingClassParameter(PreferredConstructor.Parameter<?,P> parameter)

Returns whether the given PreferredConstructor.Parameter is one referring to an enclosing class. That is in case the class this PreferredConstructor belongs to is a member class actually. If that's the case the compiler creates a first constructor argument of the enclosing class type.

Parameters:

parameter - must not be null.

Returns:

true if the PersistentProperty maps to the enclosing class.