Top Description Fields Constructors Methods
org.springframework.beans.factory.support

public Class LookupOverride

extends MethodOverride
Class Inheritance
Imports
java.lang.reflect.Method, .Modifier, org.springframework.core.ResolvableType, org.springframework.lang.Nullable, org.springframework.util.ObjectUtils
Represents an override of a method that looks up an object in the same IoC context, either by bean name or by bean type (based on the declared method return type).

Methods eligible for lookup override may declare arguments in which case the given arguments are passed to the bean retrieval operation.

Authors
Rod Johnson, Juergen Hoeller
Since
1.1
See Also
org.springframework.beans.factory.BeanFactory#getBean(String), org.springframework.beans.factory.BeanFactory#getBean(Class), org.springframework.beans.factory.BeanFactory#getBean(String, Object...), org.springframework.beans.factory.BeanFactory#getBean(Class, Object...), org.springframework.beans.factory.BeanFactory#getBeanProvider(ResolvableType)

Field Summary

Modifier and TypeField and Description
private final String
beanName

private Method
method

Constructor Summary

AccessConstructor and Description
public
LookupOverride(String
the name of the method to override
methodName, String
the name of the bean in the current BeanFactory that the overridden method should return (may be null for type-based bean retrieval)
beanName)

Construct a new LookupOverride.

public
LookupOverride(Method
the method declaration to override
method, String
the name of the bean in the current BeanFactory that the overridden method should return (may be null for type-based bean retrieval)
beanName)

Construct a new LookupOverride.

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
the reference object with which to compare.
other)

Overrides org.springframework.beans.factory.support.MethodOverride.equals.

Indicates whether some other object is "equal to" this one.

public String
getBeanName()

Return the name of the bean that should be returned by this method.

public int
hashCode()

Overrides org.springframework.beans.factory.support.MethodOverride.hashCode.

Returns a hash code value for this object.

public boolean
matches(Method
the method to check
method)

Implements abstract org.springframework.beans.factory.support.MethodOverride.matches.

Match the specified method by Method reference or method name.

public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Inherited from org.springframework.beans.factory.support.MethodOverride:
getMethodNamegetSourceisOverloadedsetOverloadedsetSource

Field Detail

beanNameback to summary
private final String beanName
Annotations
@Nullable
methodback to summary
private Method method
Annotations
@Nullable

Constructor Detail

LookupOverrideback to summary
public LookupOverride(String methodName, String beanName)

Construct a new LookupOverride.

Parameters
methodName:String

the name of the method to override

beanName:String

the name of the bean in the current BeanFactory that the overridden method should return (may be null for type-based bean retrieval)

LookupOverrideback to summary
public LookupOverride(Method method, String beanName)

Construct a new LookupOverride.

Parameters
method:Method

the method declaration to override

beanName:String

the name of the bean in the current BeanFactory that the overridden method should return (may be null for type-based bean retrieval)

Method Detail

equalsback to summary
public boolean equals(Object other)

Overrides org.springframework.beans.factory.support.MethodOverride.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
other:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
getBeanNameback to summary
public String getBeanName()

Return the name of the bean that should be returned by this method.

Annotations
@Nullable
hashCodeback to summary
public int hashCode()

Overrides org.springframework.beans.factory.support.MethodOverride.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object

Annotations
@Override
matchesback to summary
public boolean matches(Method method)

Implements abstract org.springframework.beans.factory.support.MethodOverride.matches.

Match the specified method by Method reference or method name.

For backwards compatibility reasons, in a scenario with overloaded non-abstract methods of the given name, only the no-arg variant of a method will be turned into a container-driven lookup method.

In case of a provided Method, only straight matches will be considered, usually demarcated by the @Lookup annotation.

Parameters
method:Method

Doc from org.springframework.beans.factory.support.MethodOverride.matches.

the method to check

Returns:boolean

Doc from org.springframework.beans.factory.support.MethodOverride.matches.

whether this override matches the given method

Annotations
@Override
toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Returns:String

a string representation of the object

Annotations
@Override