java.lang.Object
- java.util.AbstractMap<K,V>
- - java.util.HashMap<K,V>
  - - java.util.LinkedHashMap<String,Object>
    - - org.springframework.ui.ModelMap
      - org.springframework.ui.ExtendedModelMap

All Implemented Interfaces:
Serializable, Cloneable, Map<String,Object>, Model
Direct Known Subclasses:
BindingAwareModelMap
```
public class ExtendedModelMap
extends ModelMap
implements Model
```
Subclass of ModelMap that implements the Model interface. Java 5 specific like the Model interface itself.
This is an implementation class exposed to handler methods by Spring MVC, typically via a declaration of the Model interface. There is no need to build it within user code; a plain ModelMap or even a just a regular Map with String keys will be good enough to return a user model.
Since:
2.5.1
Author:
Juergen Hoeller
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
ExtendedModelMap()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ExtendedModelMap`	`addAllAttributes(Collection<?> attributeValues)`	Copy all attributes in the supplied `Collection` into this `Map`, using attribute name generation for each element.
`ExtendedModelMap`	`addAllAttributes(Map<String,?> attributes)`	Copy all attributes in the supplied `Map` into this `Map`.
`ExtendedModelMap`	`addAttribute(Object attributeValue)`	Add the supplied attribute to this `Map` using a `generated name`.
`ExtendedModelMap`	`addAttribute(String attributeName, Object attributeValue)`	Add the supplied attribute under the supplied name.
`Map<String,Object>`	`asMap()`	Return the current set of model attributes as a Map.
`ExtendedModelMap`	`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.

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, put, putAll, 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, put, putAll, putIfAbsent, remove, remove, replace, replace, size

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

- Constructor Detail
  - ExtendedModelMap
```
public ExtendedModelMap()
```
- Method Detail
  - addAttribute
```
public ExtendedModelMap addAttribute(String attributeName,
                                     Object attributeValue)
```
    Description copied from class: ModelMap
    Add the supplied attribute under the supplied name.
    Specified by:
    addAttribute in interface Model
    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 ExtendedModelMap addAttribute(Object attributeValue)
```
    Description copied from class: ModelMap
    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.
    Specified by:
    addAttribute in interface Model
    Overrides:
    addAttribute in class ModelMap
    Parameters:
    attributeValue - the model attribute value (never null)
  - addAllAttributes
```
public ExtendedModelMap addAllAttributes(Collection<?> attributeValues)
```
    Description copied from class: ModelMap
    Copy all attributes in the supplied Collection into this Map, using attribute name generation for each element.
    Specified by:
    addAllAttributes in interface Model
    Overrides:
    addAllAttributes in class ModelMap
    See Also:
    ModelMap.addAttribute(Object)
  - addAllAttributes
```
public ExtendedModelMap addAllAttributes(Map<String,?> attributes)
```
    Description copied from class: ModelMap
    Copy all attributes in the supplied Map into this Map.
    Specified by:
    addAllAttributes in interface Model
    Overrides:
    addAllAttributes in class ModelMap
    See Also:
    ModelMap.addAttribute(String, Object)
  - mergeAttributes
```
public ExtendedModelMap mergeAttributes(Map<String,?> attributes)
```
    Description copied from class: ModelMap
    Copy all attributes in the supplied Map into this Map, with existing objects of the same name taking precedence (i.e. not getting replaced).
    Specified by:
    mergeAttributes in interface Model
    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

Class ExtendedModelMap

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

ExtendedModelMap

Method Detail

addAttribute

addAttribute

addAllAttributes

addAllAttributes

mergeAttributes

asMap