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An Object that maps String Keys to Values.
A WildcardMap cannot contain duplicate keys.
Each Key has exactly one Entry associated. A Key can contain the Wildcard Character '*' which
matches zero or more characters. The WildcardMap supports two semantics of accessing
the entries. The first way is to ignore the special meaning of the Wildcard character and to just
return the entries as they were inserted.
This way you could put some entries in a WildcardMap and fetch them again using the Operation
getNoExpansion()
:
WildcardMap wc = new WildcardMap(); wc.put("abc", new Integer(1)); wc.put("a*", new Integer(2)); wc.getNoExpansion("abc") => 1 wc.getNoExpansion("a*") => 2 wc.getNoExpansion("xyz") => nullThis behaviour is similiar to a
Map
.getWithExpansion()
. This Operations matches the requested Key to all contained Keys. If the Key
of an Entry contains the Wildcard Character '*' it is matched as expected by the semantic of '*'.
The Operations returns an array of all matching entries:
wc.getWithExpansion("abc") => [1,2] wc.getWithExpansion("a") => [2] wc.getWithExpansion("abcd") => [2] wc.getWithExpansion("xyz") => []
Method Summary | |
---|---|
void |
clear()
clear this map |
java.lang.Object |
getNoExpansion(java.lang.Object key)
Returns the value to which this map maps the specified key. |
java.lang.Object[] |
getWithExpansion(java.lang.Object key)
Returns the value to which this map maps the specified key. |
java.lang.Object |
put(java.lang.Object key,
java.lang.Object value)
The operation put associates the specified value with the specified key in
this map. |
java.lang.Object |
remove(java.lang.Object key)
remove the specified key from this Map. |
Method Detail |
public void clear()
public java.lang.Object remove(java.lang.Object key)
public java.lang.Object put(java.lang.Object key, java.lang.Object value)
put
associates the specified value with the specified key in
this map. The String representation of the Key toString()
is used. If the map previously contained a mapping for this key, the old value is replaced by
the specified value.
key
- key with which String representation the specified value is to be associated.value
- value to be associated with the specified key.
public java.lang.Object getNoExpansion(java.lang.Object key)
key
- key whose associated value is to be returned
public java.lang.Object[] getWithExpansion(java.lang.Object key)
key
- key whose associated value is to be returned
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