java.lang.Object
- org.forgerock.http.protocol.Header
- - org.forgerock.http.header.WarningHeader

```
public final class WarningHeader
extends Header
```
Processes the Warning message header. For more information, see RFC 2616 14.46. This class is immutable and thread-safe.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`DISCONNECTED_OPERATION`	112 Disconnected operation SHOULD be included if the cache is intentionally disconnected from the rest of the network for a period of time.
`static int`	`HEURISTIC_EXPIRATION`	113 Heuristic expiration MUST be included if the cache heuristically chose a freshness lifetime greater than 24 hours and the response's age is greater than 24 hours.
`static int`	`MISCELLANEOUS_PERSISTENT_WARNING`	299 Miscellaneous persistent warning The warning text MAY include arbitrary information to be presented to a human user, or logged.
`static int`	`MISCELLANEOUS_WARNING`	199 Miscellaneous warning The warning text MAY include arbitrary information to be presented to a human user, or logged.
`static String`	`NAME`	The name of this header.
`static int`	`NOT_PRESENT`	100 Indicates that there is data missing from the request.
`static int`	`RESPONSE_STALE`	110 Response is stale MUST be included whenever the returned response is stale.
`static int`	`REVALIDATION_FAILED`	111 Revalidation failed MUST be included if a cache returns a stale response because an attempt to revalidate the response failed, due to an inability to reach the server.
`static int`	`TRANFORMATION_APPLIED`	214 Transformation applied MUST be added by an intermediate cache or proxy if it applies any transformation changing the content-coding (as specified in the Content-Encoding header) or media-type (as specified in the Content-Type header) of the response, or the entity-body of the response, unless this Warning code already appears in the response.

Constructor Summary

Constructors
Constructor Description

WarningHeader(List<Warning> warnings)
Constructor for multiple Warnings.

WarningHeader(Warning warning)
Constructor for single Warning.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`WarningHeader`	`add(int code, String agent, String text)`	Constructs a new header with the warnings defined in this `WarningHeader` in addition to the provided warning.
`WarningHeader`	`add(int code, String agent, String text, Date date)`	Constructs a new header with the warnings defined in this `WarningHeader` in addition to the provided warning.
`WarningHeader`	`add(Warning warning)`	Constructs a new header with the warnings defined in this `WarningHeader` in addition to the provided warning.
`boolean`	`equals(Object o)`
`String`	`getName()`	Returns the name of the header, as it would canonically appear within an HTTP message.
`List<String>`	`getValues()`	Returns the header as a list of strings.
`List<Warning>`	`getWarnings()`	Gets all `Warning`s.
`int`	`hashCode()`
`static WarningHeader`	`newWarning(String agentName, String fmt, Object... args)`	Constructs a new warning header with the frequently-used error type: 100.
`protected static List<Warning>`	`toWarnings(List<String> headers)`	Matches warning-headers from a `List` of header-values.
`static WarningHeader`	`valueOf(String header)`	Constructs a new header, initialized from the specified string value.
`static WarningHeader`	`valueOf(Message<?> message)`	Constructs a new header, initialized from the specified message.

Methods inherited from class org.forgerock.http.protocol.Header
getFirstValue, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - NAME
```
public static final String NAME
```
    The name of this header.
    
    See Also:
    
    Constant Field Values
  - NOT_PRESENT
```
public static final int NOT_PRESENT
```
    100 Indicates that there is data missing from the request.
    ForgeRock-Specific.
    
    See Also:
    
    Constant Field Values
  - RESPONSE_STALE
```
public static final int RESPONSE_STALE
```
    110 Response is stale MUST be included whenever the returned response is stale.
    
    See Also:
    
    Constant Field Values
  - REVALIDATION_FAILED
```
public static final int REVALIDATION_FAILED
```
    111 Revalidation failed MUST be included if a cache returns a stale response because an attempt to revalidate the response failed, due to an inability to reach the server.
    
    See Also:
    
    Constant Field Values
  - DISCONNECTED_OPERATION
```
public static final int DISCONNECTED_OPERATION
```
    112 Disconnected operation SHOULD be included if the cache is intentionally disconnected from the rest of the network for a period of time.
    
    See Also:
    
    Constant Field Values
  - HEURISTIC_EXPIRATION
```
public static final int HEURISTIC_EXPIRATION
```
    113 Heuristic expiration MUST be included if the cache heuristically chose a freshness lifetime greater than 24 hours and the response's age is greater than 24 hours.
    
    See Also:
    
    Constant Field Values
  - MISCELLANEOUS_WARNING
```
public static final int MISCELLANEOUS_WARNING
```
    199 Miscellaneous warning The warning text MAY include arbitrary information to be presented to a human user, or logged. A system receiving this warning MUST NOT take any automated action, besides presenting the warning to the user.
    
    See Also:
    
    Constant Field Values
  - TRANFORMATION_APPLIED
```
public static final int TRANFORMATION_APPLIED
```
    214 Transformation applied MUST be added by an intermediate cache or proxy if it applies any transformation changing the content-coding (as specified in the Content-Encoding header) or media-type (as specified in the Content-Type header) of the response, or the entity-body of the response, unless this Warning code already appears in the response.
    
    See Also:
    
    Constant Field Values
  - MISCELLANEOUS_PERSISTENT_WARNING
```
public static final int MISCELLANEOUS_PERSISTENT_WARNING
```
    299 Miscellaneous persistent warning The warning text MAY include arbitrary information to be presented to a human user, or logged. A system receiving this warning MUST NOT take any automated action.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - WarningHeader
```
public WarningHeader(Warning warning)
```
    Constructor for single Warning.
    
    Parameters:
    
    warning - Single Warning
  - WarningHeader
```
public WarningHeader(List<Warning> warnings)
```
    Constructor for multiple Warnings.
    
    Parameters:
    
    warnings - Multiple Warnings
- Method Detail
  - valueOf
```
public static WarningHeader valueOf(Message<?> message)
```
    Constructs a new header, initialized from the specified message.
    
    Parameters:
    
    message - The message to initialize the header from.
    
    Returns:
    
    The parsed header.
  - valueOf
```
public static WarningHeader valueOf(String header)
```
    Constructs a new header, initialized from the specified string value.
    
    Parameters:
    
    header - The value to initialize the header from.
    
    Returns:
    
    The parsed header.
  - toWarnings
```
protected static List<Warning> toWarnings(List<String> headers)
```
    Matches warning-headers from a List of header-values.
    
    Parameters:
    
    headers - Array of header values
    
    Returns:
    
    All items in headers that are a valid warning-header
  - newWarning
```
public static WarningHeader newWarning(String agentName,
                                       String fmt,
                                       Object... args)
```
    Constructs a new warning header with the frequently-used error type: 100.
    
    Parameters:
    
    agentName - Name of the component responsible for issuing the warning.
    
    fmt - The format, which may include embedded %s, etc.
    
    args - Zero or more args, passed into String.format to generate the warning text.
    
    Returns:
    
    A newly constructed WarningHeader indicating the expected key was not found in the request.
  - getName
```
public String getName()
```
    Description copied from class: Header
    
    Returns the name of the header, as it would canonically appear within an HTTP message.
    
    Specified by:
    
    getName in class Header
    
    Returns:
    
    The name of the header, as it would canonically appear within an HTTP message.
  - add
```
public WarningHeader add(int code,
                         String agent,
                         String text)
```
    Constructs a new header with the warnings defined in this WarningHeader in addition to the provided warning.
    
    Parameters:
    
    code - The warning code.
    
    agent - Name of the component responsible for issuing the warning.
    
    text - The warning text.
    
    Returns:
    
    A new WarningHeader instance.
  - add
```
public WarningHeader add(int code,
                         String agent,
                         String text,
                         Date date)
```
    Constructs a new header with the warnings defined in this WarningHeader in addition to the provided warning.
    
    Parameters:
    
    code - The warning code.
    
    agent - Name of the component responsible for issuing the warning.
    
    text - The warning text.
    
    date - The warning date or null.
    
    Returns:
    
    A new WarningHeader instance.
  - add
```
public WarningHeader add(Warning warning)
```
    Constructs a new header with the warnings defined in this WarningHeader in addition to the provided warning.
    
    Parameters:
    
    warning - The warning.
    
    Returns:
    
    A new WarningHeader instance.
  - getWarnings
```
public List<Warning> getWarnings()
```
    Gets all Warnings.
    
    Returns:
    
    All Warnings
  - getValues
```
public List<String> getValues()
```
    Description copied from class: Header
    
    Returns the header as a list of strings. If the header has no values then it must return an empty list, never null. Each String should represent the value component of the key-value pair that makes up the HTTP header - as such, for some Header implementations each String in this List may contain multiple token-separated values.
    The List returned from this method should not be expected to be mutable. However, some subclasses of Header may choose to implement it as such.
    
    Specified by:
    
    getValues in class Header
    
    Returns:
    
    The header as a non-null list of string values. Can be an empty list.
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Header
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Header

Constructor	Description
`WarningHeader(List<Warning> warnings)`	Constructor for multiple `Warning`s.
`WarningHeader(Warning warning)`	Constructor for single `Warning`.

Class WarningHeader

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.forgerock.http.protocol.Header

Methods inherited from class java.lang.Object

Field Detail

NAME

NOT_PRESENT

RESPONSE_STALE

REVALIDATION_FAILED

DISCONNECTED_OPERATION

HEURISTIC_EXPIRATION

MISCELLANEOUS_WARNING

TRANFORMATION_APPLIED

MISCELLANEOUS_PERSISTENT_WARNING

Constructor Detail

WarningHeader

WarningHeader

Method Detail

valueOf

valueOf

toWarnings

newWarning

getName

add

add

add

getWarnings

getValues

equals

hashCode