net.cnri.repository.util

Class StringPairListMap

java.lang.Object

java.util.AbstractMap<java.lang.String,java.lang.String>

net.cnri.repository.util.StringPairListMap

All Implemented Interfaces:

java.util.Map<java.lang.String,java.lang.String>

public class StringPairListMap
extends java.util.AbstractMap<java.lang.String,java.lang.String>

A thin wrapper around an ArrayList of String pairs, allowing it a Map implementation, such as needed for Digital Object attributes. The implementation does not support concurrent use.

Note that this class disobeys the general Map contract in several way, because a single key can have duplicate values. The get method will always return the latest value put, but the former values will continue to be visible via iterator and size.

The put method always returns null, even if a mapping for a key already exists.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

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

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

Constructor Summary

Constructors

Constructor and Description
StringPairListMap()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear()
java.util.Set<java.util.Map.Entry<java.lang.String,java.lang.String>>	entrySet()
java.lang.String	get(java.lang.Object key)
java.lang.String	put(java.lang.String key, java.lang.String value) The put method of this class always returns null.
java.lang.String	remove(java.lang.Object key)

Methods inherited from class java.util.AbstractMap

containsKey, containsValue, equals, hashCode, isEmpty, keySet, putAll, size, toString, values

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StringPairListMap

public StringPairListMap()

Method Detail

put

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

The put method of this class always returns null.

Specified by:

put in interface java.util.Map<java.lang.String,java.lang.String>

Overrides:

put in class java.util.AbstractMap<java.lang.String,java.lang.String>

Returns:

null. This implementation always returns null, even if a mapping already exists.

clear

public void clear()

Specified by:

clear in interface java.util.Map<java.lang.String,java.lang.String>

Overrides:

clear in class java.util.AbstractMap<java.lang.String,java.lang.String>

remove

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

Specified by:

remove in interface java.util.Map<java.lang.String,java.lang.String>

Overrides:

remove in class java.util.AbstractMap<java.lang.String,java.lang.String>

get

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

Specified by:

get in interface java.util.Map<java.lang.String,java.lang.String>

Overrides:

get in class java.util.AbstractMap<java.lang.String,java.lang.String>

entrySet

public java.util.Set<java.util.Map.Entry<java.lang.String,java.lang.String>> entrySet()

Specified by:

entrySet in interface java.util.Map<java.lang.String,java.lang.String>

Specified by:

entrySet in class java.util.AbstractMap<java.lang.String,java.lang.String>