org.apache.wicket.util.value
Class CopyOnWriteValueMap

java.lang.Object
  org.apache.wicket.util.value.CopyOnWriteValueMap

All Implemented Interfaces:

java.io.Serializable, java.util.Map, IValueMap

public class CopyOnWriteValueMap
extends java.lang.Object
implements IValueMap, java.io.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

See Also:

Serialized Form

Nested Class Summary

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

java.util.Map.Entry<K,V>

Constructor Summary

CopyOnWriteValueMap(IValueMap wrapped)
Constructor.

Method Summary

void	clear()
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Set	entrySet()
boolean	equals(java.lang.Object o)
java.lang.Object	get(java.lang.Object key)
boolean	getBoolean(java.lang.String key) Retrieves a boolean value by key.
java.lang.CharSequence	getCharSequence(java.lang.String key) Retrieves a CharSequence by key.
double	getDouble(java.lang.String key) Retrieves a double value by key.
double	getDouble(java.lang.String key, double defaultValue) Retrieves a double value by key, using a default value if not found.
Duration	getDuration(java.lang.String key) Retrieves a Duration by key.
int	getInt(java.lang.String key) Retrieves an int value by key.
int	getInt(java.lang.String key, int defaultValue) Retrieves an int value by key, using a default value if not found.
java.lang.String	getKey(java.lang.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(java.lang.String key) Retrieves a long value by key.
long	getLong(java.lang.String key, long defaultValue) Retrieves a long value by key, using a default value if not found.
java.lang.String	getString(java.lang.String key) Retrieves a String by key.
java.lang.String	getString(java.lang.String key, java.lang.String defaultValue) Retrieves a String by key, using a default value if not found.
java.lang.String[]	getStringArray(java.lang.String key) Retrieves a String array by key.
StringValue	getStringValue(java.lang.String key) Retrieves a StringValue object by key.
Time	getTime(java.lang.String key) Retrieves a Time object by key.
boolean	isEmpty()
boolean	isImmutable() Returns whether or not this IValueMap is immutable.
java.util.Set	keySet()
IValueMap	makeImmutable() Makes this IValueMap immutable by changing the underlying map representation to a Collections.unmodifiableMap.
java.lang.Object	put(java.lang.Object key, java.lang.Object value)
void	putAll(java.util.Map map)
java.lang.Object	remove(java.lang.Object key)
int	size()
java.lang.String	toString()
java.util.Collection	values()

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

hashCode

Constructor Detail

CopyOnWriteValueMap

public CopyOnWriteValueMap(IValueMap wrapped)

Constructor.

Parameters:

wrapped - the wrapped IValueMap

Method Detail

clear

public void clear()

Specified by:

clear in interface java.util.Map

Specified by:

clear in interface IValueMap

See Also:

Map.clear()

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map

See Also:

Map.containsKey(Object)

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map

See Also:

Map.containsValue(Object)

entrySet

public java.util.Set entrySet()

Specified by:

entrySet in interface java.util.Map

See Also:

Map.entrySet()

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map

Overrides:

equals in class java.lang.Object

See Also:

Map.equals(Object)

get

public java.lang.Object get(java.lang.Object key)

Specified by:

get in interface java.util.Map

See Also:

Map.get(Object)

getBoolean

public boolean getBoolean(java.lang.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

See Also:

IValueMap.getBoolean(String)

getCharSequence

public java.lang.CharSequence getCharSequence(java.lang.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

See Also:

IValueMap.getCharSequence(String)

getDouble

public double getDouble(java.lang.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

See Also:

IValueMap.getDouble(String)

getDouble

public double getDouble(java.lang.String key,
                        double defaultValue)
                 throws StringValueConversionException

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

Throws:

StringValueConversionException

See Also:

IValueMap.getDouble(String, double)

getDuration

public Duration getDuration(java.lang.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

See Also:

IValueMap.getDuration(String)

getInt

public int getInt(java.lang.String key,
                  int defaultValue)
           throws StringValueConversionException

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

Throws:

StringValueConversionException

See Also:

IValueMap.getInt(String, int)

getInt

public int getInt(java.lang.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

See Also:

IValueMap.getInt(String)

getKey

public java.lang.String getKey(java.lang.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

See Also:

IValueMap.getKey(String)

getLong

public long getLong(java.lang.String key,
                    long defaultValue)
             throws StringValueConversionException

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

Throws:

StringValueConversionException

See Also:

IValueMap.getLong(String, long)

getLong

public long getLong(java.lang.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

See Also:

IValueMap.getLong(String)

getString

public java.lang.String getString(java.lang.String key,
                                  java.lang.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

See Also:

IValueMap.getString(String, String)

getString

public java.lang.String getString(java.lang.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

See Also:

IValueMap.getString(String)

getStringArray

public java.lang.String[] getStringArray(java.lang.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

See Also:

IValueMap.getStringArray(String)

getStringValue

public StringValue getStringValue(java.lang.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

See Also:

IValueMap.getStringValue(String)

getTime

public Time getTime(java.lang.String key)
             throws StringValueConversionException

Description copied from interface: IValueMap

Retrieves a Time object by key.

Specified by:

getTime in interface IValueMap

Parameters:

key - the key

Returns:

the Time object

Throws:

StringValueConversionException

See Also:

IValueMap.getTime(String)

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map

See Also:

Map.isEmpty()

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

See Also:

IValueMap.isImmutable()

keySet

public java.util.Set keySet()

Specified by:

keySet in interface java.util.Map

See Also:

Map.keySet()

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

See Also:

IValueMap.makeImmutable()

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

Specified by:

put in interface java.util.Map

Specified by:

put in interface IValueMap

See Also:

Map.put(Object, Object)

putAll

public void putAll(java.util.Map map)

Specified by:

putAll in interface java.util.Map

Specified by:

putAll in interface IValueMap

See Also:

Map.putAll(Map)

remove

public java.lang.Object remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map

Specified by:

remove in interface IValueMap

See Also:

Map.remove(Object)

size

public int size()

Specified by:

size in interface java.util.Map

See Also:

Map.size()

values

public java.util.Collection values()

Specified by:

values in interface java.util.Map

See Also:

Map.values()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

IValueMap#toString()