Package org.ldaptive.beans.spring

Class SpelAttributeValueMutator

java.lang.Object

org.ldaptive.beans.spring.SpelAttributeValueMutator

All Implemented Interfaces:

AttributeValueMutator

public class SpelAttributeValueMutator
extends Object
implements AttributeValueMutator

Attribute mutator that uses a SPEL expression and evaluation context.

Field Summary

Fields

Modifier and Type	Field	Description
private Attribute	attribute	Attribute containing the SPEL expression.
private org.springframework.expression.EvaluationContext	evaluationContext	Evaluation context.
private org.springframework.expression.Expression	expression	SPEL expression to access values.
protected Logger	logger	Logger for this class.
private ValueTranscoder	transcoder	Custom transcoder for this attribute.

Constructor Summary

Constructors

Constructor	Description
SpelAttributeValueMutator(Attribute attr, org.springframework.expression.EvaluationContext context)	Creates a new spel attribute value mutator.

Method Summary

Modifier and Type	Method	Description
protected <T> T	convertValue(Object value, Class<?> sourceType, Class<T> targetType)	Converts the supplied value to the target type.
protected static <T> Collection<T>	createCollection(Class<?> type, int size)	Creates the best fit collection for the supplied type.
Collection<byte[]>	getBinaryValues(Object object)	Returns the binary values of the attribute.
String	getName()	Returns the name of the attribute.
Collection<String>	getStringValues(Object object)	Returns the string values of the attribute.
protected <T> Collection<T>	getValues(Object object, Class<T> type)	Uses the configured expression and evaluation context to retrieve values from the supplied object.
boolean	isBinary()	Returns whether the attribute is binary.
void	setBinaryValues(Object object, Collection<byte[]> values)	Sets the binary values of the attribute.
void	setStringValues(Object object, Collection<String> values)	Sets the string values of the attribute.
protected <T> void	setValues(Object object, Collection<T> values, Class<T> type)	Uses the configured expression and evaluation context to set values on the supplied object.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Logger logger

Logger for this class.

attribute

private final Attribute attribute

Attribute containing the SPEL expression.

expression

private final org.springframework.expression.Expression expression

SPEL expression to access values.

evaluationContext

private final org.springframework.expression.EvaluationContext evaluationContext

Evaluation context.

transcoder

private final ValueTranscoder transcoder

Custom transcoder for this attribute.

Constructor Detail

SpelAttributeValueMutator

public SpelAttributeValueMutator(Attribute attr,
                                 org.springframework.expression.EvaluationContext context)

Creates a new spel attribute value mutator.

Parameters:

attr - containing the SPEL configuration

context - containing the values

Method Detail

getName

public String getName()

Description copied from interface: AttributeValueMutator

Returns the name of the attribute.

Specified by:

getName in interface AttributeValueMutator

Returns:

attribute name

isBinary

public boolean isBinary()

Description copied from interface: AttributeValueMutator

Returns whether the attribute is binary.

Specified by:

isBinary in interface AttributeValueMutator

Returns:

whether the attribute is binary

getStringValues

public Collection<String> getStringValues(Object object)

Description copied from interface: AttributeValueMutator

Returns the string values of the attribute.

Specified by:

getStringValues in interface AttributeValueMutator

Parameters:

object - containing attribute values

Returns:

attribute values

getBinaryValues

public Collection<byte[]> getBinaryValues(Object object)

Description copied from interface: AttributeValueMutator

Returns the binary values of the attribute.

Specified by:

getBinaryValues in interface AttributeValueMutator

Parameters:

object - containing attribute values

Returns:

attribute values

getValues

protected <T> Collection<T> getValues(Object object,
                                      Class<T> type)

Uses the configured expression and evaluation context to retrieve values from the supplied object. Values are the placed in a collection and returned.

Type Parameters:

T - either String or byte[]

Parameters:

object - to get values from

type - of objects to place in the collection

Returns:

values in the supplied object

convertValue

protected <T> T convertValue(Object value,
                             Class<?> sourceType,
                             Class<T> targetType)

Converts the supplied value to the target type. If a custom transcoder has been configured it is used. Otherwise, the type converter from the evaluation context is used.

Type Parameters:

T - either String or byte[]

Parameters:

value - to convert

sourceType - to convert from

targetType - to convert to

Returns:

converted value

setStringValues

public void setStringValues(Object object,
                            Collection<String> values)

Description copied from interface: AttributeValueMutator

Sets the string values of the attribute.

Specified by:

setStringValues in interface AttributeValueMutator

Parameters:

object - to set values on

values - to set

setBinaryValues

public void setBinaryValues(Object object,
                            Collection<byte[]> values)

Description copied from interface: AttributeValueMutator

Sets the binary values of the attribute.

Specified by:

setBinaryValues in interface AttributeValueMutator

Parameters:

object - to set values on

values - to set

setValues

protected <T> void setValues(Object object,
                             Collection<T> values,
                             Class<T> type)

Uses the configured expression and evaluation context to set values on the supplied object. If a custom transcoder has been configured it is executed on the values before they are passed to the expression.

Type Parameters:

T - either String or byte[]

Parameters:

object - to set values on

values - to set

type - of objects in the collection

toString

public String toString()

Overrides:

toString in class Object

createCollection

protected static <T> Collection<T> createCollection(Class<?> type,
                                                    int size)

Creates the best fit collection for the supplied type.

Type Parameters:

T - collection type

Parameters:

type - of collection to create

size - of the collection

Returns:

collection