Class ValueUtils

java.lang.Object

org.apache.felix.scr.impl.inject.ValueUtils

public class ValueUtils
extends Object

Utility methods for handling references and activation

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	ValueUtils.MapEntryImpl	Comparable map entry using the service reference to compare.
static enum	ValueUtils.ValueType	The value type of the field, activation field or constructor parameter

Field Summary

Fields

Modifier and Type	Field	Description
static final ValueUtils.ValueType[]	EMPTY_VALUE_TYPES	Empty array.

Constructor Summary

Constructors

Constructor	Description
ValueUtils()

Method Summary

Modifier and Type	Method	Description
private static Object	getLogger(String componentType, Class<?> targetType, ScrComponentContext componentContext, RefPair<?,?> refPair)
static ValueUtils.ValueType	getReferenceValueType(Class<?> componentClass, ReferenceMetadata metadata, Class<?> typeClass, Field field, ComponentLogger logger)	Get the value type of the reference for a field/constructor argument
static Object	getValue(String componentType, ValueUtils.ValueType type, Class<?> targetType, ScrComponentContext componentContext, RefPair<?,?> refPair)	Get the value for the value type
static ValueUtils.ValueType	getValueType(Class<?> typeClass)	Get the value type for the parameter class.

Methods inherited from class Object

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

Field Details

EMPTY_VALUE_TYPES

public static final ValueUtils.ValueType[] EMPTY_VALUE_TYPES

Empty array.

Constructor Details

ValueUtils

public ValueUtils()

Method Details

getValueType

public static ValueUtils.ValueType getValueType(Class<?> typeClass)

Get the value type for the parameter class. This method is used for field activation and constructor injection.

Parameters:

typeClass - The class of the parameter

Returns:

The value type

getReferenceValueType

public static ValueUtils.ValueType getReferenceValueType(Class<?> componentClass,
 ReferenceMetadata metadata,
 Class<?> typeClass,
 Field field,
 ComponentLogger logger)

Get the value type of the reference for a field/constructor argument

Parameters:

componentClass - The component class declaring the reference

metadata - The reference metadata

typeClass - The type of the field/parameter

logger - The logger

f - The optional field. If null this is a constructor reference

Returns:

The value type for the field. If invalid, ValueType#ignore

getValue

public static Object getValue(String componentType,
 ValueUtils.ValueType type,
 Class<?> targetType,
 ScrComponentContext componentContext,
 RefPair<?,?> refPair)

Get the value for the value type

Parameters:

componentType - The class of the component

type - The value type

targetType - Optional target type, only required for type ValueType#config_annotation.

componentContext - The component context

refPair - The ref pair

Returns:

The value or null.

getLogger

private static Object getLogger(String componentType,
 Class<?> targetType,
 ScrComponentContext componentContext,
 RefPair<?,?> refPair)