org.springframework.batch.core.scope.util
Class PlaceholderTargetSource

java.lang.Object
  org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource
      org.springframework.aop.target.SimpleBeanTargetSource
          org.springframework.batch.core.scope.util.PlaceholderTargetSource

All Implemented Interfaces:

Serializable, TargetClassAware, TargetSource, BeanFactoryAware, InitializingBean

public class PlaceholderTargetSource
extends SimpleBeanTargetSource
implements InitializingBean

A TargetSource that lazily initializes its target, replacing bean definition properties dynamically if they are marked as placeholders. String values with embedded %{key} patterns will be replaced with the corresponding value from the injected context (which must also be a String). This includes dynamically locating a bean reference (e.g. ref="%{foo}"), and partial replacement of patterns (e.g. value="%{foo}-bar-%{spam}"). These replacements work for context values that are primitive (String, Long, Integer). You can also replace non-primitive values directly by making the whole bean property value into a placeholder (e.g. value="%{foo}" where foo is a property in the context).

Author:

Dave Syer

See Also:

Serialized Form

Field Summary

Fields inherited from class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource

logger

Constructor Summary

PlaceholderTargetSource()

Method Summary

void	afterPropertiesSet()
protected String	convertToString(Object value, TypeConverter typeConverter)
Object	getTarget()
void	setContextFactory(ContextFactory contextFactory) Public setter for the context factory.

Methods inherited from class org.springframework.aop.target.AbstractBeanFactoryBasedTargetSource

copyFrom, equals, getBeanFactory, getTargetBeanName, getTargetClass, hashCode, isStatic, releaseTarget, setBeanFactory, setTargetBeanName, setTargetClass, toString, writeReplace

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PlaceholderTargetSource

public PlaceholderTargetSource()

Method Detail

setContextFactory

public void setContextFactory(ContextFactory contextFactory)

Public setter for the context factory. Used to construct the context root whenever placeholders are replaced in a bean definition.

Parameters:

contextFactory - the ContextFactory

afterPropertiesSet

public void afterPropertiesSet()

Specified by:

afterPropertiesSet in interface InitializingBean

getTarget

public Object getTarget()
                 throws BeansException

Specified by:

getTarget in interface TargetSource

Overrides:

getTarget in class SimpleBeanTargetSource

Throws:

BeansException

convertToString

protected String convertToString(Object value,
                                 TypeConverter typeConverter)

Parameters:

value -

typeConverter -

Returns:

a String representation of the input if possible