java.lang.Object
- java.lang.Enum<DruidException.Category>
- - org.apache.druid.error.DruidException.Category

All Implemented Interfaces:

Serializable, Comparable<DruidException.Category>

Enclosing class:

DruidException
```
public static enum DruidException.Category
extends Enum<DruidException.Category>
```
Category of error. The simplest way to describe this is that it exists as a classification of errors that enables us to identify the expected response code (e.g. HTTP status code) of a specific DruidException

Enum Constant Summary

Enum Constants
Enum Constant	Description
`CANCELED`	Means that the query was canceled for some reason
`CAPACITY_EXCEEDED`	Means that some capacity limit was exceeded, this could be due to throttling or due to some system limit
`DEFENSIVE`	Means that the exception is being created defensively, because we want to validate something but expect that it should never actually be hit.
`FORBIDDEN`	Means that an action that was attempted is forbidden
`INVALID_INPUT`	Means that the input provided was malformed in some way.
`NOT_FOUND`	Means that the requsted requested resource cannot be found.
`RUNTIME_FAILURE`	Indicates a server-side failure of some sort at runtime
`TIMEOUT`	A timeout happened
`UNAUTHORIZED`	Means that the error is a problem with authorization.
`UNCATEGORIZED`	A catch-all for any time when we cannot come up with a meaningful categorization.
`UNSUPPORTED`	Indicates some unsupported behavior was requested.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getExpectedStatus()`
`static DruidException.Category`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static DruidException.Category[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

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

- Enum Constant Detail
  - DEFENSIVE
```
public static final DruidException.Category DEFENSIVE
```
    Means that the exception is being created defensively, because we want to validate something but expect that it should never actually be hit. Using this category is good to provide an indication to future reviewers and developers that the case being checked is not intended to actually be able to occur in the wild.
  - INVALID_INPUT
```
public static final DruidException.Category INVALID_INPUT
```
    Means that the input provided was malformed in some way. Generally speaking, it is hoped that errors of this category have messages written either targeting the USER or ADMIN personas as those are the general users of the APIs who could generate invalid inputs.
  - UNAUTHORIZED
```
public static final DruidException.Category UNAUTHORIZED
```
    Means that the error is a problem with authorization.
  - FORBIDDEN
```
public static final DruidException.Category FORBIDDEN
```
    Means that an action that was attempted is forbidden
  - NOT_FOUND
```
public static final DruidException.Category NOT_FOUND
```
    Means that the requsted requested resource cannot be found.
  - CAPACITY_EXCEEDED
```
public static final DruidException.Category CAPACITY_EXCEEDED
```
    Means that some capacity limit was exceeded, this could be due to throttling or due to some system limit
  - CANCELED
```
public static final DruidException.Category CANCELED
```
    Means that the query was canceled for some reason
  - RUNTIME_FAILURE
```
public static final DruidException.Category RUNTIME_FAILURE
```
    Indicates a server-side failure of some sort at runtime
  - TIMEOUT
```
public static final DruidException.Category TIMEOUT
```
    A timeout happened
  - UNSUPPORTED
```
public static final DruidException.Category UNSUPPORTED
```
    Indicates some unsupported behavior was requested.
  - UNCATEGORIZED
```
public static final DruidException.Category UNCATEGORIZED
```
    A catch-all for any time when we cannot come up with a meaningful categorization. This is hopefully only used when converting generic exceptions from frameworks and libraries that we do not control into DruidExceptions
- Method Detail
  - values
```
public static DruidException.Category[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (DruidException.Category c : DruidException.Category.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static DruidException.Category valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null
  - getExpectedStatus
```
public int getExpectedStatus()
```

Enum DruidException.Category

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

DEFENSIVE

INVALID_INPUT

UNAUTHORIZED

FORBIDDEN

NOT_FOUND

CAPACITY_EXCEEDED

CANCELED

RUNTIME_FAILURE

TIMEOUT

UNSUPPORTED

UNCATEGORIZED

Method Detail

values

valueOf

getExpectedStatus