Package org.springframework.beans.support

Class ArgumentConvertingMethodInvoker

java.lang.Object

org.springframework.util.MethodInvoker

org.springframework.beans.support.ArgumentConvertingMethodInvoker

Direct Known Subclasses:

MethodInvokingBean, MethodInvokingJobDetailFactoryBean, MethodInvokingRunnable

public class ArgumentConvertingMethodInvoker
extends MethodInvoker

Subclass of MethodInvoker that tries to convert the given arguments for the actual target method via a TypeConverter.

Supports flexible argument conversions, in particular for invoking a specific overloaded method.

Since:

1.1

Author:

Juergen Hoeller

See Also:

• AbstractNestablePropertyAccessor.convertIfNecessary(java.lang.String, java.lang.Object, java.lang.Object, java.lang.Class<?>, org.springframework.core.convert.TypeDescriptor)

Field Summary

Fields inherited from class org.springframework.util.MethodInvoker

targetClass

Constructor Summary

Constructors

Constructor	Description
ArgumentConvertingMethodInvoker()

Method Summary

Modifier and Type	Method	Description
protected Method	doFindMatchingMethod(Object[] arguments)	Actually find a method with matching parameter type, i.e.
protected Method	findMatchingMethod()	This implementation looks for a method with matching parameter types.
protected TypeConverter	getDefaultTypeConverter()	Obtain the default TypeConverter for this method invoker.
TypeConverter	getTypeConverter()	Return the TypeConverter used for argument type conversion.
void	registerCustomEditor(Class<?> requiredType, PropertyEditor propertyEditor)	Register the given custom property editor for all properties of the given type.
void	setTypeConverter(TypeConverter typeConverter)	Set a TypeConverter to use for argument type conversion.

Methods inherited from class org.springframework.util.MethodInvoker

getArguments, getPreparedMethod, getTargetClass, getTargetMethod, getTargetObject, getTypeDifferenceWeight, invoke, isPrepared, prepare, resolveClassName, setArguments, setStaticMethod, setTargetClass, setTargetMethod, setTargetObject

Methods inherited from class java.lang.Object

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

Constructor Details

ArgumentConvertingMethodInvoker

public ArgumentConvertingMethodInvoker()

Method Details

setTypeConverter

public void setTypeConverter(@Nullable
 TypeConverter typeConverter)

Set a TypeConverter to use for argument type conversion.

Default is a SimpleTypeConverter. Can be overridden with any TypeConverter implementation, typically a pre-configured SimpleTypeConverter or a BeanWrapperImpl instance.

See Also:

• SimpleTypeConverter
• BeanWrapperImpl

getTypeConverter

@Nullable
public TypeConverter getTypeConverter()

Return the TypeConverter used for argument type conversion.

Can be cast to PropertyEditorRegistry if direct access to the underlying PropertyEditors is desired (provided that the present TypeConverter actually implements the PropertyEditorRegistry interface).

getDefaultTypeConverter

protected TypeConverter getDefaultTypeConverter()

Obtain the default TypeConverter for this method invoker.

Called if no explicit TypeConverter has been specified. The default implementation builds a SimpleTypeConverter. Can be overridden in subclasses.

registerCustomEditor

public void registerCustomEditor(Class<?> requiredType,
 PropertyEditor propertyEditor)

Register the given custom property editor for all properties of the given type.

Typically used in conjunction with the default SimpleTypeConverter; will work with any TypeConverter that implements the PropertyEditorRegistry interface as well.

Parameters:

requiredType - type of the property

propertyEditor - editor to register

See Also:

• setTypeConverter(org.springframework.beans.TypeConverter)
• PropertyEditorRegistry.registerCustomEditor(java.lang.Class<?>, java.beans.PropertyEditor)

findMatchingMethod

@Nullable
protected Method findMatchingMethod()

This implementation looks for a method with matching parameter types.

Overrides:

findMatchingMethod in class MethodInvoker

Returns:

a matching method, or null if none

See Also:

• doFindMatchingMethod(java.lang.Object[])

doFindMatchingMethod

@Nullable
protected Method doFindMatchingMethod(Object[] arguments)

Actually find a method with matching parameter type, i.e. where each argument value is assignable to the corresponding parameter type.

Parameters:

arguments - the argument values to match against method parameters

Returns:

a matching method, or null if none