MultiMap (Vert.x Stack - Docs 4.2.7 API)

All Superinterfaces:

Iterable<Map.Entry<String,String>>
```
public interface MultiMap
extends Iterable<Map.Entry<String,String>>
```
This class represents a MultiMap of String keys to a List of String values.
It's useful in Vert.x to represent things in Vert.x like HTTP headers and HTTP parameters which allow multiple values for keys.

Author:

Norman Maurer, Tim Fox

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`MultiMap`	`add(CharSequence name, CharSequence value)` Like `add(String, String)` but accepting `CharSequence` as parameters
`MultiMap`	`add(CharSequence name, Iterable<CharSequence> values)` Like `add(String, Iterable)` but accepting `CharSequence` as parameters
`MultiMap`	`add(String name, Iterable<String> values)` Adds a new values under the specified name
`MultiMap`	`add(String name, String value)` Adds a new value with the specified name and value.
`MultiMap`	`addAll(Map<String,String> headers)` Adds all the entries from a Map to this
`MultiMap`	`addAll(MultiMap map)` Adds all the entries from another MultiMap to this one
`static MultiMap`	`caseInsensitiveMultiMap()` Create a multi-map implementation with case insensitive keys, for instance it can be used to hold some HTTP headers.
`MultiMap`	`clear()` Removes all
`boolean`	`contains(CharSequence name)` Like `contains(String)` but accepting a `CharSequence` as a parameter
`default boolean`	`contains(CharSequence name, CharSequence value, boolean caseInsensitive)` Like `contains(String, String, boolean)` but accepting `CharSequence` parameters.
`boolean`	`contains(String name)` Checks to see if there is a value with the specified name
`default boolean`	`contains(String name, String value, boolean caseInsensitive)` Check if there is a header with the specified `name` and `value`.
`default List<Map.Entry<String,String>>`	`entries()` Returns all entries in the multi-map.
`default void`	`forEach(java.util.function.BiConsumer<String,String> action)` Allows iterating over the entries in the map
`String`	`get(CharSequence name)`
`String`	`get(String name)` Returns the value of with the specified name.
`List<String>`	`getAll(CharSequence name)` Like `getAll(String)` but accepting a `CharSequence` as a parameter
`List<String>`	`getAll(String name)` Returns the values with the specified name
`boolean`	`isEmpty()` Return true if empty
`Set<String>`	`names()` Gets a immutable `Set` of all names
`MultiMap`	`remove(CharSequence name)` Like `remove(String)` but accepting `CharSequence` as parameters
`MultiMap`	`remove(String name)` Removes the value with the given name
`MultiMap`	`set(CharSequence name, CharSequence value)` Like `set(String, String)` but accepting `CharSequence` as parameters
`MultiMap`	`set(CharSequence name, Iterable<CharSequence> values)` Like `set(String, Iterable)` but accepting `CharSequence` as parameters
`MultiMap`	`set(String name, Iterable<String> values)` Sets values for the specified name.
`MultiMap`	`set(String name, String value)` Sets a `value` under the specified `name`.
`MultiMap`	`setAll(Map<String,String> headers)` Cleans and set all values of the given instance
`MultiMap`	`setAll(MultiMap map)` Cleans this instance.
`int`	`size()` Return the number of keys.

Methods inherited from interface java.lang.Iterable
forEach, iterator, spliterator

- Method Detail
  - caseInsensitiveMultiMap
```
static MultiMap caseInsensitiveMultiMap()
```
    Create a multi-map implementation with case insensitive keys, for instance it can be used to hold some HTTP headers.
    
    Returns:
    
    the multi-map
  - get
```
String get(CharSequence name)
```
  - get
```
String get(String name)
```
    Returns the value of with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - The name of the header to search
    
    Returns:
    
    The first header value or null if there is no such entry
  - getAll
```
List<String> getAll(String name)
```
    Returns the values with the specified name
    
    Parameters:
    
    name - The name to search
    
    Returns:
    
    A immutable List of values which will be empty if no values are found
  - getAll
```
List<String> getAll(CharSequence name)
```
    Like getAll(String) but accepting a CharSequence as a parameter
  - forEach
```
default void forEach(java.util.function.BiConsumer<String,String> action)
```
    Allows iterating over the entries in the map
  - entries
```
default List<Map.Entry<String,String>> entries()
```
    Returns all entries in the multi-map.
    
    Returns:
    
    A immutable List of the name-value entries, which will be empty if no pairs are found
  - contains
```
boolean contains(String name)
```
    Checks to see if there is a value with the specified name
    
    Parameters:
    
    name - The name to search for
    
    Returns:
    
    true if at least one entry is found
  - contains
```
boolean contains(CharSequence name)
```
    Like contains(String) but accepting a CharSequence as a parameter
  - contains
```
default boolean contains(String name,
                         String value,
                         boolean caseInsensitive)
```
    Check if there is a header with the specified name and value. If caseInsensitive is true, value is compared in a case-insensitive way.
    
    Parameters:
    
    name - the name to search for
    
    value - the value to search for
    
    Returns:
    
    true if at least one entry is found
  - contains
```
default boolean contains(CharSequence name,
                         CharSequence value,
                         boolean caseInsensitive)
```
    Like contains(String, String, boolean) but accepting CharSequence parameters.
  - isEmpty
```
boolean isEmpty()
```
    Return true if empty
  - names
```
Set<String> names()
```
    Gets a immutable Set of all names
    
    Returns:
    
    A Set of all names
  - add
```
MultiMap add(String name,
             String value)
```
    Adds a new value with the specified name and value.
    
    Parameters:
    
    name - The name
    
    value - The value being added
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - add
```
MultiMap add(CharSequence name,
             CharSequence value)
```
    Like add(String, String) but accepting CharSequence as parameters
  - add
```
MultiMap add(String name,
             Iterable<String> values)
```
    Adds a new values under the specified name
    
    Parameters:
    
    name - The name being set
    
    values - The values
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - add
```
MultiMap add(CharSequence name,
             Iterable<CharSequence> values)
```
    Like add(String, Iterable) but accepting CharSequence as parameters
  - addAll
```
MultiMap addAll(MultiMap map)
```
    Adds all the entries from another MultiMap to this one
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - addAll
```
MultiMap addAll(Map<String,String> headers)
```
    Adds all the entries from a Map to this
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - set
```
MultiMap set(String name,
             String value)
```
    Sets a value under the specified name.
    If there is an existing header with the same name, it is removed. Setting a null value removes the entry.
    
    Parameters:
    
    name - The name
    
    value - The value
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - set
```
MultiMap set(CharSequence name,
             CharSequence value)
```
    Like set(String, String) but accepting CharSequence as parameters
  - set
```
MultiMap set(String name,
             Iterable<String> values)
```
    Sets values for the specified name.
    
    Parameters:
    
    name - The name of the headers being set
    
    values - The values of the headers being set
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - set
```
MultiMap set(CharSequence name,
             Iterable<CharSequence> values)
```
    Like set(String, Iterable) but accepting CharSequence as parameters
  - setAll
```
MultiMap setAll(MultiMap map)
```
    Cleans this instance.
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - setAll
```
MultiMap setAll(Map<String,String> headers)
```
    Cleans and set all values of the given instance
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - remove
```
MultiMap remove(String name)
```
    Removes the value with the given name
    
    Parameters:
    
    name - The name of the value to remove
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - remove
```
MultiMap remove(CharSequence name)
```
    Like remove(String) but accepting CharSequence as parameters
  - clear
```
MultiMap clear()
```
    Removes all
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - size
```
int size()
```
    Return the number of keys.

Interface MultiMap

Method Summary

Methods inherited from interface java.lang.Iterable

Method Detail

caseInsensitiveMultiMap

get

get

getAll

getAll

forEach

entries

contains

contains

contains

contains

isEmpty

names

add

add

add

add

addAll

addAll

set

set

set

set

setAll

setAll

remove

remove

clear

size