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

public abstract Class MethodOverride

extends Object
implements BeanMetadataElement
Class Inheritance
All Implemented Interfaces
org.springframework.beans.BeanMetadataElement
Known Direct Subclasses
org.springframework.beans.factory.support.ReplaceOverride, org.springframework.beans.factory.support.LookupOverride
Imports
java.lang.reflect.Method, org.springframework.beans.BeanMetadataElement, org.springframework.lang.Nullable, org.springframework.util.Assert, .ObjectUtils

Object representing the override of a method on a managed object by the IoC container.

Note that the override mechanism is not intended as a generic means of inserting crosscutting code: use AOP for that.

Authors
Rod Johnson, Juergen Hoeller, Sam Brannen
Since
1.1

Field Summary

Modifier and TypeField and Description
private final String
private boolean
private Object

Constructor Summary

AccessConstructor and Description
protected
MethodOverride(String
the name of the method to override
methodName
)

Construct a new override for the given method.

Method Summary

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

Overrides java.lang.Object.equals.

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

public String
getMethodName()

Return the name of the method to be overridden.

public Object
getSource()

Overrides default org.springframework.beans.BeanMetadataElement.getSource.

Return the configuration source Object for this metadata element (may be null).

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

protected boolean
isOverloaded()

Return whether the overridden method is overloaded (i.e., whether argument type matching needs to occur to disambiguate methods of the same name).

public abstract boolean

Returns:

whether this override matches the given method
matches
(Method
the method to check
method
)

Subclasses must override this to indicate whether they match the given method.

protected void
setOverloaded(boolean overloaded)

Set whether the overridden method is overloaded (i.e., whether argument type matching needs to occur to disambiguate methods of the same name).

public void
setSource(Object source)

Set the configuration source Object for this metadata element.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

methodNameback to summary
private final String methodName
overloadedback to summary
private boolean overloaded
sourceback to summary
private Object source
Annotations
@Nullable

Constructor Detail

MethodOverrideback to summary
protected MethodOverride(String methodName)

Construct a new override for the given method.

Parameters
methodName:String

the name of the method to override

Method Detail

equalsback to summary
public boolean equals(Object other)

Overrides java.lang.Object.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
getMethodNameback to summary
public String getMethodName()

Return the name of the method to be overridden.

getSourceback to summary
public Object getSource()

Overrides default org.springframework.beans.BeanMetadataElement.getSource.

Doc from org.springframework.beans.BeanMetadataElement.getSource.

Return the configuration source Object for this metadata element (may be null).

Annotations
@Override
@Nullable
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.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
isOverloadedback to summary
protected boolean isOverloaded()

Return whether the overridden method is overloaded (i.e., whether argument type matching needs to occur to disambiguate methods of the same name).

matchesback to summary
public abstract boolean matches(Method method)

Subclasses must override this to indicate whether they match the given method. This allows for argument list checking as well as method name checking.

Parameters
method:Method

the method to check

Returns:boolean

whether this override matches the given method

setOverloadedback to summary
protected void setOverloaded(boolean overloaded)

Set whether the overridden method is overloaded (i.e., whether argument type matching needs to occur to disambiguate methods of the same name).

Default is true; can be switched to false to optimize runtime performance.

setSourceback to summary
public void setSource(Object source)

Set the configuration source Object for this metadata element.

The exact type of the object will depend on the configuration mechanism used.