Package org.apache.kafka.common.resource

Enum PatternType

java.lang.Object

java.lang.Enum<PatternType>

org.apache.kafka.common.resource.PatternType

All Implemented Interfaces:

Serializable, Comparable<PatternType>

@Evolving
public enum PatternType
extends Enum<PatternType>

Resource pattern type.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ANY	In a filter, matches any resource pattern type.
LITERAL	A literal resource name.
MATCH	In a filter, will perform pattern matching.
PREFIXED	A prefixed resource name.
UNKNOWN	Represents any PatternType which this client cannot understand, perhaps because this client is too old.

Method Summary

Modifier and Type	Method	Description
byte	code()
static PatternType	fromCode(byte code)	Return the PatternType with the provided code or UNKNOWN if one cannot be found.
static PatternType	fromString(String name)	Return the PatternType with the provided name or UNKNOWN if one cannot be found.
boolean	isSpecific()
boolean	isUnknown()
static PatternType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static PatternType[]	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

UNKNOWN

public static final PatternType UNKNOWN

Represents any PatternType which this client cannot understand, perhaps because this client is too old.

ANY

public static final PatternType ANY

In a filter, matches any resource pattern type.

MATCH

public static final PatternType MATCH

In a filter, will perform pattern matching. e.g. Given a filter of ResourcePatternFilter(TOPIC, "payments.received", MATCH)`, the filter match any ResourcePattern that matches topic 'payments.received'. This might include:

• A Literal pattern with the same type and name, e.g. ResourcePattern(TOPIC, "payments.received", LITERAL)
• A Wildcard pattern with the same type, e.g. ResourcePattern(TOPIC, "*", LITERAL)
• A Prefixed pattern with the same type and where the name is a matching prefix, e.g. ResourcePattern(TOPIC, "payments.", PREFIXED)

LITERAL

public static final PatternType LITERAL

A literal resource name. A literal name defines the full name of a resource, e.g. topic with name 'foo', or group with name 'bob'. The special wildcard character * can be used to represent a resource with any name.

PREFIXED

public static final PatternType PREFIXED

A prefixed resource name. A prefixed name defines a prefix for a resource, e.g. topics with names that start with 'foo'.

Method Detail

values

public static PatternType[] 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 (PatternType c : PatternType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static PatternType 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

code

public byte code()

Returns:

the code of this resource.

isUnknown

public boolean isUnknown()

Returns:

whether this resource pattern type is UNKNOWN.

isSpecific

public boolean isSpecific()

Returns:

whether this resource pattern type is a concrete type, rather than UNKNOWN or one of the filter types.

fromCode

public static PatternType fromCode(byte code)

Return the PatternType with the provided code or UNKNOWN if one cannot be found.

fromString

public static PatternType fromString(String name)

Return the PatternType with the provided name or UNKNOWN if one cannot be found.