Class NamedNodeMapImpl
- All Implemented Interfaces:
Serializable
,NamedNodeMap
- Direct Known Subclasses:
AttributeMap
Only one Node may be stored per name; attempting to store another will replace the previous value.
NOTE: The "primary" storage key is taken from the NodeName attribute of the node. The "secondary" storage key is the namespaceURI and localName, when accessed by DOM level 2 nodes. All nodes, even DOM Level 2 nodes are stored in a single ArrayList sorted by the primary "nodename" key.
NOTE: item()'s integer index does _not_ imply that the named nodes must be stored in an array; that's only an access method. Note too that these indices are "live"; if someone changes the map's contents, the indices associated with nodes may change.
INTERNAL:
- Usage of this class is not supported. It may be altered or removed at any time.
- Since:
- PR-DOM-Level-1-19980818.
- Version:
- $Id: NamedNodeMapImpl.java 1829683 2018-04-21 03:09:46Z mukulg $
- See Also:
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Field Summary
Fields -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
NamedNodeMapImpl
(NodeImpl ownerNode) Constructs a named node map. -
Method Summary
Modifier and TypeMethodDescriptionprotected int
protected void
cloneContent
(NamedNodeMapImpl srcmap) protected ArrayList
NON-DOM: copy content of this map into the specified ArrayListCloning a NamedNodeMap is a DEEP OPERATION; it always clones all the nodes contained in the map.protected int
findNamePoint
(String name, int start) Subroutine: Locate the named item, or the point at which said item should be added.protected int
findNamePoint
(String namespaceURI, String name) This findNamePoint is for DOM Level 2 Namespaces.protected Object
getItem
(int index) int
Report how many nodes are currently stored in this NamedNodeMap.getNamedItem
(String name) Retrieve a node by name.protected int
getNamedItemIndex
(String namespaceURI, String localName) getNamedItemNS
(String namespaceURI, String localName) Introduced in DOM Level 2.item
(int index) Retrieve an item from the map by 0-based index.protected boolean
void
NON-DOM remove all elements from this mapprotected void
removeItem
(int index) NON-DOM: Remove attribute at specified indexremoveNamedItem
(String name) removeNamedItemNS
(String namespaceURI, String name) Introduced in DOM Level 2.setNamedItem
(Node arg) Adds a node using its nodeName attribute.setNamedItemNS
(Node arg) Adds a node using its namespaceURI and localName.protected void
NON-DOM set the ownerDocument of this node, and the attributes it contains
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Field Details
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flags
protected short flags -
READONLY
protected static final short READONLY- See Also:
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CHANGED
protected static final short CHANGED- See Also:
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HASDEFAULTS
protected static final short HASDEFAULTS- See Also:
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nodes
Nodes. -
ownerNode
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Constructor Details
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NamedNodeMapImpl
Constructs a named node map.
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Method Details
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getLength
public int getLength()Report how many nodes are currently stored in this NamedNodeMap. Caveat: This is a count rather than an index, so the highest-numbered node at any time can be accessed via item(getLength()-1).- Specified by:
getLength
in interfaceNamedNodeMap
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item
Retrieve an item from the map by 0-based index.- Specified by:
item
in interfaceNamedNodeMap
- Parameters:
index
- Which item to retrieve. Note that indices are just an enumeration of the current contents; they aren't guaranteed to be stable, nor do they imply any promises about the order of the NamedNodeMap's contents. In other words, DO NOT assume either that index(i) will always refer to the same entry, or that there is any stable ordering of entries... and be prepared for double-reporting or skips as insertion and deletion occur.- Returns:
- the node which currenly has the specified index, or null if index is greater than or equal to getLength().
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getNamedItem
Retrieve a node by name.- Specified by:
getNamedItem
in interfaceNamedNodeMap
- Parameters:
name
- Name of a node to look up.- Returns:
- the Node (of unspecified sub-class) stored with that name, or null if no value has been assigned to that name.
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getNamedItemNS
Introduced in DOM Level 2.Retrieves a node specified by local name and namespace URI.
- Specified by:
getNamedItemNS
in interfaceNamedNodeMap
- Parameters:
namespaceURI
- The namespace URI of the node to retrieve. When it is null or an empty string, this method behaves like getNamedItem.localName
- The local name of the node to retrieve.- Returns:
- Node A Node (of any type) with the specified name, or null if the specified name did not identify any node in the map.
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setNamedItem
Adds a node using its nodeName attribute. As the nodeName attribute is used to derive the name which the node must be stored under, multiple nodes of certain types (those that have a "special" string value) cannot be stored as the names would clash. This is seen as preferable to allowing nodes to be aliased.- Specified by:
setNamedItem
in interfaceNamedNodeMap
- Parameters:
arg
- A node to store in a named node map. The node will later be accessible using the value of the namespaceURI and localName attribute of the node. If a node with those namespace URI and local name is already present in the map, it is replaced by the new one.- Returns:
- If the new Node replaces an existing node the replaced Node is returned, otherwise null is returned.
- Throws:
DOMException
- The exception description.- See Also:
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setNamedItemNS
Adds a node using its namespaceURI and localName.- Specified by:
setNamedItemNS
in interfaceNamedNodeMap
- Parameters:
arg
- A node to store in a named node map. The node will later be accessible using the value of the namespaceURI and localName attribute of the node. If a node with those namespace URI and local name is already present in the map, it is replaced by the new one.- Returns:
- If the new Node replaces an existing node the replaced Node is returned, otherwise null is returned.
- Throws:
DOMException
- See Also:
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removeNamedItem
- Specified by:
removeNamedItem
in interfaceNamedNodeMap
- Throws:
DOMException
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removeNamedItemNS
Introduced in DOM Level 2.Removes a node specified by local name and namespace URI.
- Specified by:
removeNamedItemNS
in interfaceNamedNodeMap
- Parameters:
namespaceURI
- The namespace URI of the node to remove. When it is null or an empty string, this method behaves like removeNamedItem.name
- The local name of the node to remove.- Returns:
- Node The node removed from the map if a node with such a local name and namespace URI exists.
- Throws:
DOMException
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cloneMap
Cloning a NamedNodeMap is a DEEP OPERATION; it always clones all the nodes contained in the map. -
cloneContent
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setOwnerDocument
NON-DOM set the ownerDocument of this node, and the attributes it contains -
findNamePoint
Subroutine: Locate the named item, or the point at which said item should be added.- Parameters:
name
- Name of a node to look up.- Returns:
- If positive or zero, the index of the found item. If negative, index of the appropriate point at which to insert the item, encoded as -1-index and hence reconvertable by subtracting it from -1. (Encoding because I don't want to recompare the strings but don't want to burn bytes on a datatype to hold a flagged value.)
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findNamePoint
This findNamePoint is for DOM Level 2 Namespaces. -
precedes
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removeItem
protected void removeItem(int index) NON-DOM: Remove attribute at specified index -
getItem
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addItem
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cloneMap
NON-DOM: copy content of this map into the specified ArrayList- Parameters:
list
- ArrayList to copy information into.- Returns:
- A copy of this node named map
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getNamedItemIndex
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removeAll
public void removeAll()NON-DOM remove all elements from this map
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