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ConstructorArgumentValues (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.beans.factory.config
Class ConstructorArgumentValues

java.lang.Object
  org.springframework.beans.factory.config.ConstructorArgumentValues

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public class ConstructorArgumentValues
extends Object

Holder for constructor argument values, typically as part of a bean definition.

Supports values for a specific index in the constructor argument list as well as for generic argument matches by type.

Since:

09.11.2003

Author:

Juergen Hoeller

See Also:

BeanDefinition.getConstructorArgumentValues()

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Nested Class Summary
static class	ConstructorArgumentValues.ValueHolder           Holder for a constructor argument value, with an optional type attribute indicating the target type of the actual constructor argument.

 

Constructor Summary
ConstructorArgumentValues()           Create a new empty ConstructorArgumentValues object.
ConstructorArgumentValues(ConstructorArgumentValues original)           Deep copy constructor.

 

Method Summary
void	addArgumentValues(ConstructorArgumentValues other)           Copy all given argument values into this object, using separate holder instances to keep the values independent from the original object.
void	addGenericArgumentValue(ConstructorArgumentValues.ValueHolder newValue)           Add generic argument value to be matched by type.
void	addGenericArgumentValue(Object value)           Add generic argument value to be matched by type.
void	addGenericArgumentValue(Object value, String type)           Add generic argument value to be matched by type.
void	addIndexedArgumentValue(int index, ConstructorArgumentValues.ValueHolder newValue)           Add argument value for the given index in the constructor argument list.
void	addIndexedArgumentValue(int index, Object value)           Add argument value for the given index in the constructor argument list.
void	addIndexedArgumentValue(int index, Object value, String type)           Add argument value for the given index in the constructor argument list.
void	clear()           Clear this holder, removing all argument values.
boolean	equals(Object other)
int	getArgumentCount()           Return the number of argument values held in this instance, counting both indexed and generic argument values.
ConstructorArgumentValues.ValueHolder	getArgumentValue(int index, Class requiredType)           Look for an argument value that either corresponds to the given index in the constructor argument list or generically matches by type.
ConstructorArgumentValues.ValueHolder	getArgumentValue(int index, Class requiredType, Set usedValueHolders)           Look for an argument value that either corresponds to the given index in the constructor argument list or generically matches by type.
ConstructorArgumentValues.ValueHolder	getGenericArgumentValue(Class requiredType)           Look for a generic argument value that matches the given type.
ConstructorArgumentValues.ValueHolder	getGenericArgumentValue(Class requiredType, Set usedValueHolders)           Look for the next generic argument value that matches the given type, ignoring argument values that have already been used in the current resolution process.
List	getGenericArgumentValues()           Return the list of generic argument values.
ConstructorArgumentValues.ValueHolder	getIndexedArgumentValue(int index, Class requiredType)           Get argument value for the given index in the constructor argument list.
Map	getIndexedArgumentValues()           Return the map of indexed argument values.
int	hashCode()
boolean	isEmpty()           Return if this holder does not contain any argument values, neither indexed ones nor generic ones.

 

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

ConstructorArgumentValues

public ConstructorArgumentValues()

Create a new empty ConstructorArgumentValues object.

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ConstructorArgumentValues

public ConstructorArgumentValues(ConstructorArgumentValues original)

Deep copy constructor.

Parameters:

original - the ConstructorArgumentValues to copy

Method Detail

addArgumentValues

public void addArgumentValues(ConstructorArgumentValues other)

Copy all given argument values into this object, using separate holder instances to keep the values independent from the original object.

Note: Identical ValueHolder instances will only be registered once, to allow for merging and re-merging of argument value definitions. Distinct ValueHolder instances carrying the same content are of course allowed.

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addIndexedArgumentValue

public void addIndexedArgumentValue(int index,
                                    Object value)

Add argument value for the given index in the constructor argument list.

Parameters:

index - the index in the constructor argument list

value - the argument value

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addIndexedArgumentValue

public void addIndexedArgumentValue(int index,
                                    Object value,
                                    String type)

Add argument value for the given index in the constructor argument list.

Parameters:

index - the index in the constructor argument list

value - the argument value

type - the type of the constructor argument

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addIndexedArgumentValue

public void addIndexedArgumentValue(int index,
                                    ConstructorArgumentValues.ValueHolder newValue)

Add argument value for the given index in the constructor argument list.

Parameters:

index - the index in the constructor argument list

newValue - the argument value in the form of a ValueHolder

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getIndexedArgumentValue

public ConstructorArgumentValues.ValueHolder getIndexedArgumentValue(int index,
                                                                     Class requiredType)

Get argument value for the given index in the constructor argument list.

Parameters:

index - the index in the constructor argument list

requiredType - the type to match (can be null to match untyped values only)

Returns:

the ValueHolder for the argument, or null if none set

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getIndexedArgumentValues

public Map getIndexedArgumentValues()

Return the map of indexed argument values.

Returns:

unmodifiable Map with Integer index as key and ValueHolder as value

See Also:

ConstructorArgumentValues.ValueHolder

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addGenericArgumentValue

public void addGenericArgumentValue(Object value)

Add generic argument value to be matched by type.

Note: A single generic argument value will just be used once, rather than matched multiple times (as of Spring 1.1).

Parameters:

value - the argument value

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addGenericArgumentValue

public void addGenericArgumentValue(Object value,
                                    String type)

Add generic argument value to be matched by type.

Note: A single generic argument value will just be used once, rather than matched multiple times (as of Spring 1.1).

Parameters:

value - the argument value

type - the type of the constructor argument

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addGenericArgumentValue

public void addGenericArgumentValue(ConstructorArgumentValues.ValueHolder newValue)

Add generic argument value to be matched by type.

Note: A single generic argument value will just be used once, rather than matched multiple times (as of Spring 1.1).

Parameters:

newValue - the argument value in the form of a ValueHolder

Note: Identical ValueHolder instances will only be registered once, to allow for merging and re-merging of argument value definitions. Distinct ValueHolder instances carrying the same content are of course allowed.

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getGenericArgumentValue

public ConstructorArgumentValues.ValueHolder getGenericArgumentValue(Class requiredType)

Look for a generic argument value that matches the given type.

Parameters:

requiredType - the type to match (can be null to find an arbitrary next generic argument value)

Returns:

the ValueHolder for the argument, or null if none set

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getGenericArgumentValue

public ConstructorArgumentValues.ValueHolder getGenericArgumentValue(Class requiredType,
                                                                     Set usedValueHolders)

Look for the next generic argument value that matches the given type, ignoring argument values that have already been used in the current resolution process.

Parameters:

requiredType - the type to match (can be null to find an arbitrary next generic argument value)

usedValueHolders - a Set of ValueHolder objects that have already been used in the current resolution process and should therefore not be returned again

Returns:

the ValueHolder for the argument, or null if none found

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getGenericArgumentValues

public List getGenericArgumentValues()

Return the list of generic argument values.

Returns:

unmodifiable List of ValueHolders

See Also:

ConstructorArgumentValues.ValueHolder

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getArgumentValue

public ConstructorArgumentValues.ValueHolder getArgumentValue(int index,
                                                              Class requiredType)

Look for an argument value that either corresponds to the given index in the constructor argument list or generically matches by type.

Parameters:

index - the index in the constructor argument list

requiredType - the type to match

Returns:

the ValueHolder for the argument, or null if none set

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getArgumentValue

public ConstructorArgumentValues.ValueHolder getArgumentValue(int index,
                                                              Class requiredType,
                                                              Set usedValueHolders)

Look for an argument value that either corresponds to the given index in the constructor argument list or generically matches by type.

Parameters:

index - the index in the constructor argument list

requiredType - the type to match (can be null to find an untyped argument value)

usedValueHolders - a Set of ValueHolder objects that have already been used in the current resolution process and should therefore not be returned again (allowing to return the next generic argument match in case of multiple generic argument values of the same type)

Returns:

the ValueHolder for the argument, or null if none set

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getArgumentCount

public int getArgumentCount()

Return the number of argument values held in this instance, counting both indexed and generic argument values.

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isEmpty

public boolean isEmpty()

Return if this holder does not contain any argument values, neither indexed ones nor generic ones.

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clear

public void clear()

Clear this holder, removing all argument values.

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equals

public boolean equals(Object other)

Overrides:

equals in class Object

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hashCode

public int hashCode()

Overrides:

hashCode in class Object

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