Package org.springframework.web.bind

Class ServletRequestDataBinder.ServletRequestValueResolver

java.lang.Object

org.springframework.web.bind.ServletRequestDataBinder.ServletRequestValueResolver

All Implemented Interfaces:

DataBinder.ValueResolver

Enclosing class:

ServletRequestDataBinder

protected static class ServletRequestDataBinder.ServletRequestValueResolver
extends Object
implements DataBinder.ValueResolver

Resolver that looks up values to bind in a ServletRequest.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ServletRequestValueResolver(ServletRequest request, WebDataBinder dataBinder)

Method Summary

Modifier and Type	Method	Description
Set<String>	getNames()	Return the names of all property values.
protected ServletRequest	getRequest()
protected @Nullable Object	getRequestParameter(String name, Class<?> type)
protected Set<String>	initParameterNames(ServletRequest request)
final @Nullable Object	resolveValue(String name, Class<?> paramType)	Resolve the value for the given name and target parameter type.

Methods inherited from class java.lang.Object

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

Constructor Details

ServletRequestValueResolver

protected ServletRequestValueResolver(ServletRequest request,
 WebDataBinder dataBinder)

Method Details

getRequest

protected ServletRequest getRequest()

resolveValue

public final @Nullable Object resolveValue(String name,
 Class<?> paramType)

Description copied from interface: DataBinder.ValueResolver

Resolve the value for the given name and target parameter type.

Specified by:

resolveValue in interface DataBinder.ValueResolver

Parameters:

name - the name to use for the lookup, possibly a nested path for constructor parameters on nested objects

paramType - the target type, based on the constructor parameter type

Returns:

the resolved value, possibly null if none found

getRequestParameter

protected @Nullable Object getRequestParameter(String name,
 Class<?> type)

getNames

public Set<String> getNames()

Description copied from interface: DataBinder.ValueResolver

Return the names of all property values.

Useful for proactive checks whether there are property values nested further below the path for a constructor arg. If not then the constructor arg can be considered missing and not to be instantiated.

Specified by:

getNames in interface DataBinder.ValueResolver

initParameterNames

protected Set<String> initParameterNames(ServletRequest request)