org.apache.solr.common.util
Class SimpleOrderedMap<T>

java.lang.Object
  org.apache.solr.common.util.NamedList<T>
      org.apache.solr.common.util.SimpleOrderedMap<T>

All Implemented Interfaces:

Serializable, Cloneable, Iterable<Map.Entry<String,T>>

public class SimpleOrderedMap<T>
extends NamedList<T>

SimpleOrderedMap is a NamedList where access by key is more important than maintaining order when it comes to representing the held data in other forms, as ResponseWriters normally do. It's normally not a good idea to repeat keys or use null keys, but this is not enforced. If key uniqueness enforcement is desired, use a regular Map.

For example, a JSON response writer may choose to write a SimpleOrderedMap as {"foo":10,"bar":20} and may choose to write a NamedList as ["foo",10,"bar",20]. An XML response writer may choose to render both the same way.

This class does not provide efficient lookup by key, it's main purpose is to hold data to be serialized. It aims to minimize overhead and to be efficient at adding new elements.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.common.util.NamedList

NamedList.NamedListEntry<T>

Field Summary

Fields inherited from class org.apache.solr.common.util.NamedList

nvPairs

Constructor Summary

SimpleOrderedMap()
Creates an empty instance

SimpleOrderedMap(List<Object> nameValuePairs)
Deprecated.

SimpleOrderedMap(Map.Entry<String,T>[] nameValuePairs)

Method Summary

SimpleOrderedMap<T>

clone() Makes a shallow copy of the named list.

Methods inherited from class org.apache.solr.common.util.NamedList

add, addAll, addAll, clear, equals, findRecursive, get, get, getAll, getName, getVal, hashCode, indexOf, iterator, remove, remove, setName, setVal, size, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SimpleOrderedMap

public SimpleOrderedMap()

Creates an empty instance

SimpleOrderedMap

@Deprecated
public SimpleOrderedMap(List<Object> nameValuePairs)

Deprecated.

Creates an instance backed by an explicitly specified list of pairwise names/values.

Parameters:

nameValuePairs - underlying List which should be used to implement a SimpleOrderedMap; modifying this List will affect the SimpleOrderedMap.

SimpleOrderedMap

public SimpleOrderedMap(Map.Entry<String,T>[] nameValuePairs)

Method Detail

clone

public SimpleOrderedMap<T> clone()

Description copied from class: NamedList

Makes a shallow copy of the named list.

Overrides:

clone in class NamedList<T>