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ConstructorArgumentValues (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.beans.factory.config
Class ConstructorArgumentValues

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

public class ConstructorArgumentValues
extends Object

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

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

Since:
09.11.2003
Author:
Juergen Hoeller
See Also:
BeanDefinition.getConstructorArgumentValues()

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 new ConstructorArgumentValues.
ConstructorArgumentValues(ConstructorArgumentValues other)
          Deep copy constructor.
 
Method Summary
 void addArgumentValues(ConstructorArgumentValues other)
          Copy all given argument values into this object.
 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, 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.
 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.
 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, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ConstructorArgumentValues

public ConstructorArgumentValues()
Create new ConstructorArgumentValues.

ConstructorArgumentValues

public ConstructorArgumentValues(ConstructorArgumentValues other)
Deep copy constructor.

Method Detail

addArgumentValues

public void addArgumentValues(ConstructorArgumentValues other)
Copy all given argument values into this object.

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

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

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
Returns:
the ValueHolder for the argument, or null if none set

getIndexedArgumentValues

public Map getIndexedArgumentValues()
Return the map of indexed argument values.

Returns:
Map with Integer indizes as keys and ValueHolders as values
See Also:
ConstructorArgumentValues.ValueHolder

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

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

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, as fallback)
Returns:
the ValueHolder for the argument, or null if none set

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, as fallback)
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

getGenericArgumentValues

public List getGenericArgumentValues()
Return the list of generic argument values.

Returns:
List of ValueHolders
See Also:
ConstructorArgumentValues.ValueHolder

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

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
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

getArgumentCount

public int getArgumentCount()
Return the number of argument values held in this instance, counting both indexed and generic argument values.

isEmpty

public boolean isEmpty()
Return if this holder does not contain any argument values, neither indexed ones nor generic ones.

clear

public void clear()
Clear this holder, removing all argument values.

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