java.lang.Object
- java.util.AbstractMap<K,V>
- - java.util.HashMap<K,V>
  - - java.util.LinkedHashMap<String,Object>
    - - org.springframework.ui.ModelMap
      - org.springframework.web.servlet.mvc.support.RedirectAttributesModelMap

All Implemented Interfaces:
Serializable, Cloneable, Map<String,Object>, Model, RedirectAttributes
```
public class RedirectAttributesModelMap
extends ModelMap
implements RedirectAttributes
```
A ModelMap implementation of RedirectAttributes that formats values as Strings using a DataBinder. Also provides a place to store flash attributes so they can survive a redirect without the need to be embedded in the redirect URL.
Since:
3.1
Author:
Rossen Stoyanchev
See Also:
Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class java.util.AbstractMap
  AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Constructor Summary
Constructors
Constructor Description
RedirectAttributesModelMap()
Default constructor without a DataBinder.
RedirectAttributesModelMap(DataBinder dataBinder)
Constructor with a DataBinder.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`RedirectAttributesModelMap`	`addAllAttributes(Collection<?> attributeValues)`	Copy all attributes in the supplied `Collection` into this `Map`, using attribute name generation for each element.
`RedirectAttributesModelMap`	`addAllAttributes(Map<String,?> attributes)`	Copy all attributes in the supplied `Map` into this `Map`.
`RedirectAttributesModelMap`	`addAttribute(Object attributeValue)`	Add the supplied attribute to this `Map` using a `generated name`.
`RedirectAttributesModelMap`	`addAttribute(String attributeName, Object attributeValue)`	Add the supplied attribute under the supplied name.
`RedirectAttributes`	`addFlashAttribute(Object attributeValue)`	Add the given flash storage using a `generated name`.
`RedirectAttributes`	`addFlashAttribute(String attributeName, Object attributeValue)`	Add the given flash attribute.
`Map<String,Object>`	`asMap()`	Return the current set of model attributes as a Map.
`Map<String,?>`	`getFlashAttributes()`	Return the attributes candidate for flash storage or an empty Map.
`RedirectAttributesModelMap`	`mergeAttributes(Map<String,?> attributes)`	Copy all attributes in the supplied `Map` into this `Map`, with existing objects of the same name taking precedence (i.e.
`Object`	`put(String key, Object value)`
`void`	`putAll(Map<? extends String,? extends Object> map)`

Methods inherited from class org.springframework.ui.ModelMap
containsAttribute

Methods inherited from class java.util.LinkedHashMap
clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, removeEldestEntry, replaceAll, values

Methods inherited from class java.util.HashMap
clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, putIfAbsent, remove, remove, replace, replace, size

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
compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from interface org.springframework.ui.Model
containsAttribute

- Constructor Detail
  - RedirectAttributesModelMap
```
public RedirectAttributesModelMap()
```
    Default constructor without a DataBinder. Attribute values are converted to String via AbstractMap.toString().
  - RedirectAttributesModelMap
```
public RedirectAttributesModelMap(DataBinder dataBinder)
```
    Constructor with a DataBinder.
    Parameters:
    dataBinder - used to format attribute values as Strings
- Method Detail
  - getFlashAttributes
```
public Map<String,?> getFlashAttributes()
```
    Return the attributes candidate for flash storage or an empty Map.
    Specified by:
    getFlashAttributes in interface RedirectAttributes
  - addAttribute
```
public RedirectAttributesModelMap addAttribute(String attributeName,
                                               Object attributeValue)
```
    Add the supplied attribute under the supplied name.
    Formats the attribute value as a String before adding it.
    Specified by:
    addAttribute in interface Model
    Specified by:
    addAttribute in interface RedirectAttributes
    Overrides:
    addAttribute in class ModelMap
    Parameters:
    attributeName - the name of the model attribute (never null)
    attributeValue - the model attribute value (can be null)
  - addAttribute
```
public RedirectAttributesModelMap addAttribute(Object attributeValue)
```
    Add the supplied attribute to this Map using a generated name.
    Note: Empty Collections are not added to the model when using this method because we cannot correctly determine the true convention name. View code should check for null rather than for empty collections as is already done by JSTL tags.
    Formats the attribute value as a String before adding it.
    Specified by:
    addAttribute in interface Model
    Specified by:
    addAttribute in interface RedirectAttributes
    Overrides:
    addAttribute in class ModelMap
    Parameters:
    attributeValue - the model attribute value (never null)
  - addAllAttributes
```
public RedirectAttributesModelMap addAllAttributes(Collection<?> attributeValues)
```
    Copy all attributes in the supplied Collection into this Map, using attribute name generation for each element.
    Each attribute value is formatted as a String before being added.
    Specified by:
    addAllAttributes in interface Model
    Specified by:
    addAllAttributes in interface RedirectAttributes
    Overrides:
    addAllAttributes in class ModelMap
    See Also:
    ModelMap.addAttribute(Object)
  - addAllAttributes
```
public RedirectAttributesModelMap addAllAttributes(Map<String,?> attributes)
```
    Copy all attributes in the supplied Map into this Map.
    Each attribute value is formatted as a String before being added.
    Specified by:
    addAllAttributes in interface Model
    Overrides:
    addAllAttributes in class ModelMap
    See Also:
    ModelMap.addAttribute(String, Object)
  - mergeAttributes
```
public RedirectAttributesModelMap mergeAttributes(Map<String,?> attributes)
```
    Copy all attributes in the supplied Map into this Map, with existing objects of the same name taking precedence (i.e. not getting replaced).
    Each attribute value is formatted as a String before being merged.
    Specified by:
    mergeAttributes in interface Model
    Specified by:
    mergeAttributes in interface RedirectAttributes
    Overrides:
    mergeAttributes in class ModelMap
  - asMap
```
public Map<String,Object> asMap()
```
    Description copied from interface: Model
    Return the current set of model attributes as a Map.
    Specified by:
    asMap in interface Model
  - put
```
public Object put(String key,
                  Object value)
```
    The value is formatted as a String before being added.
    Specified by:
    put in interface Map<String,Object>
    Overrides:
    put in class HashMap<String,Object>
  - putAll
```
public void putAll(Map<? extends String,? extends Object> map)
```
    Each value is formatted as a String before being added.
    Specified by:
    putAll in interface Map<String,Object>
    Overrides:
    putAll in class HashMap<String,Object>
  - addFlashAttribute
```
public RedirectAttributes addFlashAttribute(String attributeName,
                                            Object attributeValue)
```
    Description copied from interface: RedirectAttributes
    Add the given flash attribute.
    Specified by:
    addFlashAttribute in interface RedirectAttributes
    Parameters:
    attributeName - the attribute name; never null
    attributeValue - the attribute value; may be null
  - addFlashAttribute
```
public RedirectAttributes addFlashAttribute(Object attributeValue)
```
    Description copied from interface: RedirectAttributes
    Add the given flash storage using a generated name.
    Specified by:
    addFlashAttribute in interface RedirectAttributes
    Parameters:
    attributeValue - the flash attribute value; never null

Constructor	Description
`RedirectAttributesModelMap()`	Default constructor without a DataBinder.
`RedirectAttributesModelMap(DataBinder dataBinder)`	Constructor with a DataBinder.

Class RedirectAttributesModelMap

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class org.springframework.ui.ModelMap

Methods inherited from class java.util.LinkedHashMap

Methods inherited from class java.util.HashMap

Methods inherited from class java.util.AbstractMap

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Methods inherited from interface org.springframework.ui.Model

Constructor Detail

RedirectAttributesModelMap

RedirectAttributesModelMap

Method Detail

getFlashAttributes

addAttribute

addAttribute

addAllAttributes

addAllAttributes

mergeAttributes

asMap

put

putAll

addFlashAttribute

addFlashAttribute