Package org.apache.logging.log4j.util

Interface StringMap

All Superinterfaces:

ReadOnlyStringMap, Serializable

All Known Subinterfaces:

IndexedStringMap

All Known Implementing Classes:

SortedArrayStringMap

public interface StringMap
extends ReadOnlyStringMap

Exposes methods to add and remove key-value pairs to and from ReadOnlyStringMap.

Since:

2.7

See Also:

• ReadOnlyStringMap

Method Summary

Modifier and Type	Method	Description
void	clear()	Removes all key-value pairs from this collection.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one.
void	freeze()	Makes this collection immutable.
int	hashCode()	Returns a hash code value for the object.
boolean	isFrozen()	Returns true if this object has been frozen, false otherwise.
void	putAll(ReadOnlyStringMap source)	Copies all key-value pairs from the specified ReadOnlyStringMap into this StringMap.
void	putValue(String key, Object value)	Puts the specified key-value pair into the collection.
void	remove(String key)	Removes the key-value pair for the specified key from this data structure.

Methods inherited from interface org.apache.logging.log4j.util.ReadOnlyStringMap

containsKey, forEach, forEach, getValue, isEmpty, size, toMap

Method Details

clear

void clear()

Removes all key-value pairs from this collection.

Throws:

ConcurrentModificationException - some implementations may not support structural modifications to this data structure while iterating over the contents with ReadOnlyStringMap.forEach(BiConsumer) or ReadOnlyStringMap.forEach(TriConsumer, Object).

UnsupportedOperationException - if this collection has been frozen.

equals

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

Overrides:

equals in class Object

Parameters:

obj - the reference object with which to compare.

Returns:

true if this object is the same as the obj argument; false otherwise.

See Also:

• hashCode()

freeze

void freeze()

Makes this collection immutable. Attempts to modify the collection after the freeze() method was called will result in an UnsupportedOperationException being thrown.

hashCode

int hashCode()

Returns a hash code value for the object.

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

isFrozen

boolean isFrozen()

Returns true if this object has been frozen, false otherwise.

Returns:

true if this object has been frozen, false otherwise

putAll

void putAll(ReadOnlyStringMap source)

Copies all key-value pairs from the specified ReadOnlyStringMap into this StringMap.

Parameters:

source - the ReadOnlyStringMap to copy key-value pairs from

Throws:

ConcurrentModificationException - some implementations may not support structural modifications to this data structure while iterating over the contents with ReadOnlyStringMap.forEach(BiConsumer) or ReadOnlyStringMap.forEach(TriConsumer, Object).

UnsupportedOperationException - if this collection has been frozen.

putValue

void putValue(String key,
 Object value)

Puts the specified key-value pair into the collection.

Parameters:

key - the key to add or remove. Keys may be null.

value - the value to add. Values may be null.

Throws:

ConcurrentModificationException - some implementations may not support structural modifications to this data structure while iterating over the contents with ReadOnlyStringMap.forEach(BiConsumer) or ReadOnlyStringMap.forEach(TriConsumer, Object).

UnsupportedOperationException - if this collection has been frozen.

remove

void remove(String key)

Removes the key-value pair for the specified key from this data structure.

Parameters:

key - the key to remove. May be null.

Throws:

ConcurrentModificationException - some implementations may not support structural modifications to this data structure while iterating over the contents with ReadOnlyStringMap.forEach(BiConsumer) or ReadOnlyStringMap.forEach(TriConsumer, Object).

UnsupportedOperationException - if this collection has been frozen.