br.ufscar.old.controller

Class MultipartMap

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<String,Object>

br.ufscar.old.controller.MultipartMap

All Implemented Interfaces:

Serializable, Cloneable, Map<String,Object>

public class MultipartMap
extends HashMap<String,Object>

The MultipartMap. It simulates the HttpServletRequest#getParameterXXX() methods to ease the processing in @MultipartConfig servlets. You can access the normal request parameters by getParameter(String) and you can access multiple request parameter values by getParameterValues(String).

On creation, the MultipartMap will put itself in the request scope, identified by the attribute name parts, so that you can access the parameters in EL by for example ${parts.fieldname} where you would have used ${param.fieldname}. In case of file fields, the ${parts.filefieldname} returns a File.

It was a design decision to extend HashMap<String, Object> instead of having just Map<String, String[]> and Map<String, File> properties, because of the accessibility in Expression Language. Also, when the value is obtained * by get(Object), as will happen in EL, then multiple parameter values will be converted from String[] to List<String>, so that you can use it in the JSTL fn:contains function.

Author:

BalusC

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Constructor Summary

Constructors

Constructor and Description
MultipartMap(javax.servlet.http.HttpServletRequest multipartRequest) Global constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Object	get(Object key)
File	getFile(String name) Returns uploaded file associated with given request parameter name.
String	getParameter(String name)
Map<String,String[]>	getParameterMap()
Enumeration<String>	getParameterNames()
String[]	getParameterValues(String name)

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

MultipartMap

public MultipartMap(javax.servlet.http.HttpServletRequest multipartRequest)
             throws javax.servlet.ServletException,
                    IOException

Global constructor.

Throws:

javax.servlet.ServletException

IOException

Method Detail

get

public Object get(Object key)

Specified by:

get in interface Map<String,Object>

Overrides:

get in class HashMap<String,Object>

getParameter

public String getParameter(String name)

See Also:

ServletRequest.getParameter(String)

getParameterValues

public String[] getParameterValues(String name)

See Also:

ServletRequest.getParameterValues(String)

getParameterNames

public Enumeration<String> getParameterNames()

See Also:

ServletRequest.getParameterNames()

getParameterMap

public Map<String,String[]> getParameterMap()

See Also:

ServletRequest.getParameterMap()

getFile

public File getFile(String name)

Returns uploaded file associated with given request parameter name.

Parameters:

name - Request parameter name to return the associated uploaded file for.

Returns:

Uploaded file associated with given request parameter name.

Throws:

IllegalArgumentException - If this field is actually a Text field.