Module org.apache.wicket.util

Package org.apache.wicket.util.value

Class CopyOnWriteValueMap

java.lang.Object

org.apache.wicket.util.value.CopyOnWriteValueMap

All Implemented Interfaces:

Serializable, Map<String,Object>, IValueMap

public class CopyOnWriteValueMap
extends Object
implements IValueMap, Serializable

An implementation of IValueMap that makes a copy when a caller tries to change an immutable Map. That is, the Map may or may not be immutable, but if it is, a copy is made.

Since:

1.2.6

Author:

Johan Compagner, Doug Donohoe

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
CopyOnWriteValueMap(IValueMap wrapped)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<String,Object>>	entrySet()
boolean	equals(Object o)
Object	get(Object key)
Boolean	getAsBoolean(String key)	Retrieves a Boolean value by key.
boolean	getAsBoolean(String key, boolean defaultValue)	Retrieves a boolean value by key.
Double	getAsDouble(String key)	Retrieves a Double value by key.
double	getAsDouble(String key, double defaultValue)	Retrieves a double value by key.
Duration	getAsDuration(String key)	Retrieves a Duration value by key.
Duration	getAsDuration(String key, Duration defaultValue)	Retrieves a Duration value by key.
<T extends Enum<T>> T	getAsEnum(String key, Class<T> eClass)	Retrieves an Enum value by key.
<T extends Enum<T>> T	getAsEnum(String key, Class<T> eClass, T defaultValue)	Retrieves an Enum value by key.
<T extends Enum<T>> T	getAsEnum(String key, T defaultValue)	Retrieves an Enum value by key.
Instant	getAsInstant(String key)	Retrieves a Time value by key.
Integer	getAsInteger(String key)	Retrieves an Integer value by key.
int	getAsInteger(String key, int defaultValue)	Retrieves an integer value by key.
Long	getAsLong(String key)	Retrieves a Long value by key.
long	getAsLong(String key, long defaultValue)	Retrieves a long value by key.
Instant	getAsTime(String key, Instant defaultValue)	Retrieves a Time value by key.
boolean	getBoolean(String key)	Retrieves a boolean value by key.
CharSequence	getCharSequence(String key)	Retrieves a CharSequence by key.
double	getDouble(String key)	Retrieves a double value by key.
double	getDouble(String key, double defaultValue)	Retrieves a double value by key, using a default value if not found.
Duration	getDuration(String key)	Retrieves a Duration by key.
Instant	getInstant(String key)	Retrieves a Instant object by key.
int	getInt(String key)	Retrieves an int value by key.
int	getInt(String key, int defaultValue)	Retrieves an int value by key, using a default value if not found.
String	getKey(String key)	Provided that the hash key is a String and you need to access the value ignoring the key's case (upper- or lowercase letters), then you may use this method to get the correct writing.
long	getLong(String key)	Retrieves a long value by key.
long	getLong(String key, long defaultValue)	Retrieves a long value by key, using a default value if not found.
String	getString(String key)	Retrieves a String by key.
String	getString(String key, String defaultValue)	Retrieves a String by key, using a default value if not found.
String[]	getStringArray(String key)	Retrieves a String array by key.
StringValue	getStringValue(String key)	Retrieves a StringValue object by key.
int	hashCode()
boolean	isEmpty()
boolean	isImmutable()	Returns whether or not this IValueMap is immutable.
Set<String>	keySet()
IValueMap	makeImmutable()	Makes this IValueMap immutable by changing the underlying map representation to a Collections.unmodifiableMap.
Object	put(String key, Object value)
void	putAll(Map<? extends String,?> map)
Object	remove(Object key)
int	size()
Collection<Object>	values()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

CopyOnWriteValueMap

public CopyOnWriteValueMap(IValueMap wrapped)

Constructor.

Parameters:

wrapped - the wrapped IValueMap

Method Details

clear

public void clear()

Specified by:

clear in interface Map<String,Object>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,Object>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,Object>

entrySet

public Set<Map.Entry<String,Object>> entrySet()

Specified by:

entrySet in interface Map<String,Object>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<String,Object>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<String,Object>

Overrides:

hashCode in class Object

get

public Object get(Object key)

Specified by:

get in interface Map<String,Object>

getBoolean

public boolean getBoolean(String key)
                   throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves a boolean value by key.

Specified by:

getBoolean in interface IValueMap

Parameters:

key - the key

Returns:

the value

Throws:

StringValueConversionException

getCharSequence

public CharSequence getCharSequence(String key)

Description copied from interface: IValueMap

Retrieves a CharSequence by key.

Specified by:

getCharSequence in interface IValueMap

Parameters:

key - the key

Returns:

the CharSequence

getDouble

public double getDouble(String key)
                 throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves a double value by key.

Specified by:

getDouble in interface IValueMap

Parameters:

key - the key

Returns:

the value

Throws:

StringValueConversionException

getDouble

public double getDouble(String key,
 double defaultValue)

Description copied from interface: IValueMap

Retrieves a double value by key, using a default value if not found.

Specified by:

getDouble in interface IValueMap

Parameters:

key - the key

defaultValue - value to use if no value is in this IValueMap

Returns:

the value

getDuration

public Duration getDuration(String key)
                     throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves a Duration by key.

Specified by:

getDuration in interface IValueMap

Parameters:

key - the key

Returns:

the Duration value

Throws:

StringValueConversionException

getInt

public int getInt(String key,
 int defaultValue)

Description copied from interface: IValueMap

Retrieves an int value by key, using a default value if not found.

Specified by:

getInt in interface IValueMap

Parameters:

key - the key

defaultValue - value to use if no value is in this IValueMap

Returns:

the value

getInt

public int getInt(String key)
           throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves an int value by key.

Specified by:

getInt in interface IValueMap

Parameters:

key - the key

Returns:

the value

Throws:

StringValueConversionException

getKey

public String getKey(String key)

Description copied from interface: IValueMap

Provided that the hash key is a String and you need to access the value ignoring the key's case (upper- or lowercase letters), then you may use this method to get the correct writing.

Specified by:

getKey in interface IValueMap

Parameters:

key - the key

Returns:

the key with the correct writing

getLong

public long getLong(String key,
 long defaultValue)

Description copied from interface: IValueMap

Retrieves a long value by key, using a default value if not found.

Specified by:

getLong in interface IValueMap

Parameters:

key - the key

defaultValue - value to use if no value in this IValueMap

Returns:

the value

getLong

public long getLong(String key)
             throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves a long value by key.

Specified by:

getLong in interface IValueMap

Parameters:

key - the key

Returns:

the value

Throws:

StringValueConversionException

getString

public String getString(String key,
 String defaultValue)

Description copied from interface: IValueMap

Retrieves a String by key, using a default value if not found.

Specified by:

getString in interface IValueMap

Parameters:

key - the key

defaultValue - default value to return if value is null

Returns:

the String

getString

public String getString(String key)

Description copied from interface: IValueMap

Retrieves a String by key.

Specified by:

getString in interface IValueMap

Parameters:

key - the key

Returns:

the String

getStringArray

public String[] getStringArray(String key)

Description copied from interface: IValueMap

Retrieves a String array by key. If the value was a String[] it will be returned directly. If it was a String it will be converted to a String array of length one. If it was an array of another type, a String array will be made and each element will be converted to a String.

Specified by:

getStringArray in interface IValueMap

Parameters:

key - the key

Returns:

the String array of that key

getStringValue

public StringValue getStringValue(String key)

Description copied from interface: IValueMap

Retrieves a StringValue object by key.

Specified by:

getStringValue in interface IValueMap

Parameters:

key - the key

Returns:

the StringValue object

getInstant

public Instant getInstant(String key)
                   throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves a Instant object by key.

Specified by:

getInstant in interface IValueMap

Parameters:

key - the key

Returns:

the Instant object

Throws:

StringValueConversionException

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,Object>

isImmutable

public boolean isImmutable()

Description copied from interface: IValueMap

Returns whether or not this IValueMap is immutable.

Specified by:

isImmutable in interface IValueMap

Returns:

whether or not this IValueMap is immutable

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,Object>

makeImmutable

public IValueMap makeImmutable()

Description copied from interface: IValueMap

Makes this IValueMap immutable by changing the underlying map representation to a Collections.unmodifiableMap. After calling this method, any attempt to modify this IValueMap will result in a RuntimeException being thrown by the Collections framework.

Specified by:

makeImmutable in interface IValueMap

Returns:

this IValueMap

put

public Object put(String key,
 Object value)

Specified by:

put in interface Map<String,Object>

putAll

public void putAll(Map<? extends String,?> map)

Specified by:

putAll in interface Map<String,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Map<String,Object>

size

public int size()

Specified by:

size in interface Map<String,Object>

values

public Collection<Object> values()

Specified by:

values in interface Map<String,Object>

getAsBoolean

public Boolean getAsBoolean(String key)

Description copied from interface: IValueMap

Retrieves a Boolean value by key.

Specified by:

getAsBoolean in interface IValueMap

Parameters:

key - the key

Returns:

the value or null if value is not a valid boolean or no value is in this IValueMap

getAsBoolean

public boolean getAsBoolean(String key,
 boolean defaultValue)

Description copied from interface: IValueMap

Retrieves a boolean value by key.

Specified by:

getAsBoolean in interface IValueMap

Parameters:

key - the key

defaultValue - the default to return

Returns:

the value or defaultValue if value is not a valid boolean or no value is in this IValueMap

getAsInteger

public Integer getAsInteger(String key)

Description copied from interface: IValueMap

Retrieves an Integer value by key.

Specified by:

getAsInteger in interface IValueMap

Parameters:

key - the key

Returns:

the value or null if value is not a valid integer or no value is in this IValueMap

getAsInteger

public int getAsInteger(String key,
 int defaultValue)

Description copied from interface: IValueMap

Retrieves an integer value by key.

Specified by:

getAsInteger in interface IValueMap

Parameters:

key - the key

defaultValue - the default to return

Returns:

the value or defaultValue if value is not a valid integer or no value is in this IValueMap

getAsLong

public Long getAsLong(String key)

Description copied from interface: IValueMap

Retrieves a Long value by key.

Specified by:

getAsLong in interface IValueMap

Parameters:

key - the key

Returns:

the value or null if value is not a valid long or no value is in this IValueMap

getAsLong

public long getAsLong(String key,
 long defaultValue)

Description copied from interface: IValueMap

Retrieves a long value by key.

Specified by:

getAsLong in interface IValueMap

Parameters:

key - the key

defaultValue - the default to return

Returns:

the value or defaultValue if value is not a valid long or no value is in this IValueMap

getAsDouble

public Double getAsDouble(String key)

Description copied from interface: IValueMap

Retrieves a Double value by key.

Specified by:

getAsDouble in interface IValueMap

Parameters:

key - the key

Returns:

the value or null if value is not a valid double or no value is in this IValueMap

getAsDouble

public double getAsDouble(String key,
 double defaultValue)

Description copied from interface: IValueMap

Retrieves a double value by key.

Specified by:

getAsDouble in interface IValueMap

Parameters:

key - the key

defaultValue - the default to return

Returns:

the value or defaultValue if value is not a valid double or no value is in this IValueMap

getAsDuration

public Duration getAsDuration(String key)

Description copied from interface: IValueMap

Retrieves a Duration value by key.

Specified by:

getAsDuration in interface IValueMap

Parameters:

key - the key

Returns:

the value or null if value is not a valid Duration or no value is in this IValueMap

getAsDuration

public Duration getAsDuration(String key,
 Duration defaultValue)

Description copied from interface: IValueMap

Retrieves a Duration value by key.

Specified by:

getAsDuration in interface IValueMap

Parameters:

key - the key

defaultValue - the default to return

Returns:

the value or defaultValue if value is not a valid Duration or no value is in this IValueMap

getAsInstant

public Instant getAsInstant(String key)

Description copied from interface: IValueMap

Retrieves a Time value by key.

Specified by:

getAsInstant in interface IValueMap

Parameters:

key - the key

Returns:

the value or null if value is not a valid Time or no value is in this IValueMap

getAsTime

public Instant getAsTime(String key,
 Instant defaultValue)

Description copied from interface: IValueMap

Retrieves a Time value by key.

Specified by:

getAsTime in interface IValueMap

Parameters:

key - the key

defaultValue - the default to return

Returns:

the value or defaultValue if value is not a valid Time or no value is in this IValueMap

getAsEnum

public <T extends Enum<T>> T getAsEnum(String key,
 Class<T> eClass)

Description copied from interface: IValueMap

Retrieves an Enum value by key.

Specified by:

getAsEnum in interface IValueMap

Type Parameters:

T - type of enum

Parameters:

key - the key

eClass - the enumeration class

Returns:

the value or null if value is not a valid value of the Enumeration or no value is in this IValueMap

getAsEnum

public <T extends Enum<T>> T getAsEnum(String key,
 T defaultValue)

Description copied from interface: IValueMap

Retrieves an Enum value by key.

Specified by:

getAsEnum in interface IValueMap

Type Parameters:

T - type of enum

Parameters:

key - the key

defaultValue - the default value from the Enumeration (cannot be null)

Returns:

the value or defaultValue if value is not a valid value of the Enumeration or no value is in this IValueMap

getAsEnum

public <T extends Enum<T>> T getAsEnum(String key,
 Class<T> eClass,
 T defaultValue)

Description copied from interface: IValueMap

Retrieves an Enum value by key.

Specified by:

getAsEnum in interface IValueMap

Type Parameters:

T - type of enum

Parameters:

key - the key

eClass - the enumeration class

defaultValue - the default value from the Enumeration (may be null)

Returns:

the value or defaultValue if value is not a valid value of the Enumeration or no value is in this IValueMap