Package org.springframework.data.util

Class ParameterTypes

java.lang.Object

org.springframework.data.util.ParameterTypes

public class ParameterTypes
extends Object

Abstraction over a list of parameter value types. Allows to check whether a list of parameter values with the given type setup is a candidate for the invocation of a given Method (see areValidFor(Method)). This is necessary to properly match parameter values against methods declaring varargs arguments. The implementation favors direct matches and only computes the alternative sets of types to be considered if the primary one doesn't match.

Since:

2.1.7

Author:

Oliver Drotbohm

Constructor Summary

Constructors

Constructor	Description
ParameterTypes(List<TypeDescriptor> types, Lazy<Collection<ParameterTypes>> alternatives)

Method Summary

Modifier and Type	Method	Description
boolean	areValidFor(Method method)	Returns whether the parameter types are valid for the given Method.
boolean	equals(Object o)
boolean	exactlyMatchParametersOf(Method method)	Returns whether the current parameter types match the given Method's parameters exactly, i.e. they're equal, not only assignable.
protected Optional<ParameterTypes>	getParent()
protected final Optional<ParameterTypes>	getParent(TypeDescriptor tail)
int	hashCode()
static ParameterTypes	of(List<TypeDescriptor> types)	Returns the ParameterTypes for the given list of TypeDescriptors.
String	toString()
protected Optional<ParameterTypes>	withLastVarArgs()

Methods inherited from class java.lang.Object

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

Constructor Details

ParameterTypes

public ParameterTypes(List<TypeDescriptor> types,
 Lazy<Collection<ParameterTypes>> alternatives)

Method Details

of

public static ParameterTypes of(List<TypeDescriptor> types)

Returns the ParameterTypes for the given list of TypeDescriptors.

Parameters:

types - must not be null.

Returns:

areValidFor

public boolean areValidFor(Method method)

Returns whether the parameter types are valid for the given Method. That means, a parameter value list with the given type arrangement is a valid list to invoke the given method.

Parameters:

method - must not be null.

Returns:

exactlyMatchParametersOf

public boolean exactlyMatchParametersOf(Method method)

Returns whether the current parameter types match the given Method's parameters exactly, i.e. they're equal, not only assignable.

Parameters:

method - must not be null.

Returns:

toString

public String toString()

Overrides:

toString in class Object

getParent

protected Optional<ParameterTypes> getParent()

getParent

protected final Optional<ParameterTypes> getParent(TypeDescriptor tail)

withLastVarArgs

protected Optional<ParameterTypes> withLastVarArgs()

equals

public boolean equals(@Nullable
 Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object