InetAddressStringLookup

java.lang.Object

org.apache.commons.text.lookup.AbstractStringLookup

org.apache.commons.text.lookup.InetAddressStringLookup

All Implemented Interfaces:: Function<String,String>, UnaryOperator<String>, StringLookup

final class InetAddressStringLookup extends AbstractStringLookup

Looks up keys related to an

invalid reference

InetAddresse

.

local host: host name, canonical host name, host address.

The lookup keys are:

name: for the local host name, for example EXAMPLE.
canonical-name: for the local canonical host name, for example EXAMPLE.apache.org.
address: for the local host address, for example 192.168.56.1.

Public access is through StringLookupFactory.

Since:

1.3

See Also:

Field Summary

Fields

Modifier and Type

Field

Description

private final org.apache.commons.lang3.function.FailableSupplier<InetAddress, UnknownHostException>

inetAddressSupplier

Supplies the InetAddress.

(package private) static final InetAddressStringLookup

LOCAL_HOST

Defines the LOCAL_HOST constant.

(package private) static final InetAddressStringLookup

LOOPACK_ADDRESS

Defines the LOCAL_HOST constant.

Fields inherited from class AbstractStringLookup
SPLIT_CH, SPLIT_STR
Constructor Summary

Constructors

Modifier

Constructor

Description

private

InetAddressStringLookup(org.apache.commons.lang3.function.FailableSupplier<InetAddress, UnknownHostException> inetAddressSupplier)

No need to build instances for now.
Method Summary

Modifier and Type

Method

Description

private InetAddress

getInetAddress()

String

lookup(String key)

Looks up the value of a local host key.

Methods inherited from class AbstractStringLookup
substringAfter, substringAfter, substringAfterLast, toLookupKey, toLookupKey

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface Function
andThen, compose

Methods inherited from interface StringLookup
apply

Field Details
- LOCAL_HOST
  
  static final InetAddressStringLookup LOCAL_HOST
  
  Defines the LOCAL_HOST constant.
- LOOPACK_ADDRESS
  
  static final InetAddressStringLookup LOOPACK_ADDRESS
  
  Defines the LOCAL_HOST constant.
- inetAddressSupplier
  
  private final org.apache.commons.lang3.function.FailableSupplier<InetAddress, UnknownHostException> inetAddressSupplier
  
  Supplies the InetAddress.
Constructor Details
- InetAddressStringLookup
  
  private InetAddressStringLookup(org.apache.commons.lang3.function.FailableSupplier<InetAddress, UnknownHostException> inetAddressSupplier)
  
  No need to build instances for now.
Method Details
- getInetAddress
  
  private InetAddress getInetAddress() throws UnknownHostException
  
  Throws:
  
  UnknownHostException
- lookup
  
  public String lookup(String key)
  
  Looks up the value of a local host key.
  
  Parameters:
  
  key - the key to be looked up, may be null.
  
  Returns:
  
  The value of the environment variable.