org.infohazard.maverick.util
Class NoOverwriteMap

java.lang.Object
  |
  +--org.infohazard.maverick.util.NoOverwriteMap

All Implemented Interfaces:

java.util.Map

public class NoOverwriteMap

extends java.lang.Object

implements java.util.Map

Map wrapper which prevents overwriting existing keys.

Nested Class Summary

static class

NoOverwriteMap.OverwriteException

Field Summary

protected java.util.Map

wrapped

Constructor Summary

NoOverwriteMap(java.util.Map wrap)

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)
int	hashCode()
boolean	isEmpty()
java.util.Set	keySet()
java.lang.Object	put(java.lang.Object key, java.lang.Object value) Prevents overwriting existing keys.
void	putAll(java.util.Map t) Prevents overwriting existing keys.
java.lang.Object	remove(java.lang.Object key)
int	size()
java.util.Collection	values()

Methods inherited from class java.lang.Object

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

Field Detail

wrapped

protected java.util.Map wrapped

Constructor Detail

NoOverwriteMap

public NoOverwriteMap(java.util.Map wrap)

Method Detail

size

public int size()

Specified by:

size in interface java.util.Map

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map

get

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

Specified by:

get in interface java.util.Map

remove

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

Specified by:

remove in interface java.util.Map

clear

public void clear()

Specified by:

clear in interface java.util.Map

keySet

public java.util.Set keySet()

Specified by:

keySet in interface java.util.Map

values

public java.util.Collection values()

Specified by:

values in interface java.util.Map

entrySet

public java.util.Set entrySet()

Specified by:

entrySet in interface java.util.Map

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map

Overrides:

hashCode in class java.lang.Object

put

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

Prevents overwriting existing keys.

Specified by:

put in interface java.util.Map

Throws:

NoOverwriteMap.OverwriteException - if the key is already present.

putAll

public void putAll(java.util.Map t)

Prevents overwriting existing keys.

Specified by:

putAll in interface java.util.Map

Throws:

NoOverwriteMap.OverwriteException - if the key is already present.