Package javax.servlet.jsp.el
Class ImplicitObjectELResolver.EnumeratedMap<K,V>
java.lang.Object
javax.servlet.jsp.el.ImplicitObjectELResolver.EnumeratedMap<K,V>
- All Implemented Interfaces:
Map<K,
V>
- Enclosing class:
- ImplicitObjectELResolver
private abstract static class ImplicitObjectELResolver.EnumeratedMap<K,V>
extends Object
implements Map<K,V>
This is a Map implementation driven by a data source that only provides an enumeration of keys and a getValue(key) method. This class must be subclassed to implement those methods.
Some of the methods may incur a performance penalty that involves enumerating the entire data source. In these cases, the Map will try to save the results of that enumeration, but only if the underlying data source is immutable.
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Nested Class Summary
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
clear()
boolean
containsKey
(Object pKey) boolean
containsValue
(Object pValue) Converts to a MapentrySet()
abstract Enumeration<K>
getAsMap()
Converts the MapSource to a Map.abstract V
boolean
isEmpty()
abstract boolean
keySet()
void
int
size()
values()
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll
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Field Details
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mMap
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Constructor Details
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EnumeratedMap
private EnumeratedMap()
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Method Details
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clear
public void clear() -
containsKey
- Specified by:
containsKey
in interfaceMap<K,
V>
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containsValue
- Specified by:
containsValue
in interfaceMap<K,
V>
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entrySet
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get
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isEmpty
public boolean isEmpty() -
keySet
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put
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putAll
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remove
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size
public int size() -
values
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enumerateKeys
- Returns:
- an enumeration of the keys
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isMutable
public abstract boolean isMutable()- Returns:
- true if it is possible for this data source to change
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getValue
- Parameters:
pKey
- The key for which the value should be obtained- Returns:
- the value associated with the given key, or null if not found.
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getAsMap
Converts the MapSource to a Map. If the map is not mutable, this is cached- Returns:
- A Map created from the source Enumeration
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convertToMap
Converts to a Map
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