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## org.dom4j.tree
Class AbstractElement

    java.lang.Object
      org.dom4j.tree.AbstractNode
          org.dom4j.tree.AbstractBranch
              org.dom4j.tree.AbstractElement

All Implemented Interfaces:
  Branch, Cloneable, Element, Node, Serializable

Direct Known Subclasses:
  BaseElement, DefaultElement

public abstract class AbstractElement
extends AbstractBranch
implements Element

`AbstractElement` is an abstract base class for tree implementors to use for implementation inheritence.

Version:
  $Revision: 1.80 $
Author:
  James Strachan
See Also:
  Serialized Form

Field Summary
`protected static Iterator` | `EMPTY_ITERATOR`
`protected static List` | `EMPTY_LIST`
`protected static boolean` | `USE_STRINGVALUE_SEPARATOR`
`protected static boolean` | `VERBOSE_TOSTRING`

Fields inherited from class org.dom4j.tree.AbstractBranch
`DEFAULT_CONTENT_LIST_SIZE`

Fields inherited from class org.dom4j.tree.AbstractNode
`NODE_TYPE_NAMES`

Fields inherited from interface org.dom4j.Node
`ANY_NODE, ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_NODE, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_REFERENCE_NODE, MAX_NODE_TYPE, NAMESPACE_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE, UNKNOWN_NODE`

Constructor Summary
`AbstractElement()`

Method Summary
`void` | `accept(Visitor visitor)` `accept` method is the `Visitor Pattern` method.
`void` | `add(Attribute attribute)` Adds the given `Attribute` to this element.
`void` | `add(CDATA cdata)` Adds the given `CDATA` to this element.
`void` | `add(Comment comment)` Adds the given `Comment` to this branch.
`void` | `add(Element element)` Adds the given `Element` to this branch.
`void` | `add(Entity entity)` Adds the given `Entity` to this element.
`void` | `add(Namespace namespace)` Adds the given `Namespace` to this element.
`void` | `add(Node node)` Adds the given `Node` or throws `IllegalAddException` if the given node is not of a valid type.
`void` | `add(ProcessingInstruction pi)` Adds the given `ProcessingInstruction` to this branch.
`void` | `add(Text text)` Adds the given `Text` to this element.
`Element` | `addAttribute(QName qName, String value)` Adds the attribute value of the given fully qualified name.
`Element` | `addAttribute(String name, String value)` Adds the attribute value of the given local name.
`Element` | `addCDATA(String cdata)` Adds a new `CDATA` node with the given text to this element.
`Element` | `addComment(String comment)` Adds a new `Comment` node with the given text to this element.
`Element` | `addElement(String name)` Adds a new `Element` node with the given name to this branch and returns a reference to the new node.
`Element` | `addEntity(String name, String text)` Adds a new `Entity` node with the given name and text to this element and returns a reference to the new node.
`List` | `additionalNamespaces()` Returns any additional namespaces declarations for this element other than namespace returned via the `getNamespace()`method.
`List` | `additionalNamespaces(String defaultNamespaceURI)`
`Element` | `addNamespace(String prefix, String uri)` Adds a namespace to this element for use by its child content
`protected void` | `addNewNode(int index, Node node)`
`protected void` | `addNewNode(Node node)` Like addNode() but does not require a parent check
`protected void` | `addNode(int index, Node node)`
`protected void` | `addNode(Node node)`
`Element` | `addProcessingInstruction(String target, Map data)` Adds a processing instruction for the given target
`Element` | `addProcessingInstruction(String target, String data)` Adds a processing instruction for the given target
`Element` | `addText(String text)` Adds a new `Text` node with the given text to this element.
`void` | `appendAttributes(Element element)` Appends the attributes of the given element to me.
`String` | `asXML()` `asXML` returns the textual XML representation of this node.
`Attribute` | `attribute(int index)` Returns the attribute at the specified indexGets the
`Attribute` | `attribute(QName qName)` DOCUMENT ME!
`Attribute` | `attribute(String name)` Returns the attribute with the given name
`Attribute` | `attribute(String name, Namespace namespace)`
`int` | `attributeCount()` DOCUMENT ME!
`Iterator` | `attributeIterator()` DOCUMENT ME!
`protected abstract List` | `attributeList()` DOCUMENT ME!
`protected abstract List` | `attributeList(int attributeCount)` DOCUMENT ME!
`List` | `attributes()` Returns the `Attribute`instances this element contains as a backed `List`so that the attributes may be modified directly using the `List`interface.
`String` | `attributeValue(QName qName)` This returns the attribute value for the attribute with the given fully qualified name or null if there is no such attribute or the empty string if the attribute value is empty.
`String` | `attributeValue(QName qName, String defaultValue)` This returns the attribute value for the attribute with the given fully qualified name or the default value if there is no such attribute value.
`String` | `attributeValue(String name)` This returns the attribute value for the attribute with the given name and any namespace or null if there is no such attribute or the empty string if the attribute value is empty.
`String` | `attributeValue(String name, String defaultValue)` This returns the attribute value for the attribute with the given name and any namespace or the default value if there is no such attribute value.
`protected void` | `childAdded(Node node)` Called when a new child node is added to create any parent relationships
`protected void` | `childRemoved(Node node)` Called when a child node has been removed to allow any parent relationships to be deleted or events to be fired.
`protected List` | `createAttributeList()` A Factory Method pattern which creates a List implementation used to store attributes
`protected List` | `createAttributeList(int size)` A Factory Method pattern which creates a List implementation used to store attributes
`Element` | `createCopy()` This returns a deep clone of this element.
`Element` | `createCopy(QName qName)` Creates a deep copy of this element with the given fully qualified name.
`Element` | `createCopy(String name)` Creates a deep copy of this element with the given local name The new element is detached from its parent, and getParent() on the clone will return null.
`protected Element` | `createElement(QName qName)`
`protected Element` | `createElement(String name)`
`protected Iterator` | `createSingleIterator(Object result)`
`List` | `declaredNamespaces()` Returns all the namespaces declared by this element.
`Element` | `element(QName qName)` Returns the first element for the given fully qualified name.
`Element` | `element(String name)` Returns the first element for the given local name and any namespace.
`Element` | `element(String name, Namespace namespace)`
`Iterator` | `elementIterator()` Returns an iterator over all this elements child elements.
`Iterator` | `elementIterator(QName qName)` Returns an iterator over the elements contained in this element which match the given fully qualified name.
`Iterator` | `elementIterator(String name)` Returns an iterator over the elements contained in this element which match the given local name and any namespace.
`Iterator` | `elementIterator(String name, Namespace ns)`
`List` | `elements()` Returns the elements contained in this element.
`List` | `elements(QName qName)` Returns the elements contained in this element with the given fully qualified name.
`List` | `elements(String name)` Returns the elements contained in this element with the given local name and any namespace.
`List` | `elements(String name, Namespace namespace)`
`String` | `elementText(QName qName)`
`String` | `elementText(String name)`
`String` | `elementTextTrim(QName qName)`
`String` | `elementTextTrim(String name)`
`void` | `ensureAttributesCapacity(int minCapacity)` Ensures that the list of attributes has the given size
`Object` | `getData()` Accesses the data of this element which may implement data typing bindings such as XML Schema or Java Bean bindings or will return the same value as `AbstractBranch.getText()`
`protected DocumentFactory` | `getDocumentFactory()`
`String` | `getName()` `getName` returns the name of this node.
`Namespace` | `getNamespace()` Returns the `Namespace` of this element if one exists otherwise `Namespace.NO_NAMESPACE` is returned.
`Namespace` | `getNamespaceForPrefix(String prefix)` Returns the `Namespace` which is mapped to the given prefix or null if it could not be found.
`Namespace` | `getNamespaceForURI(String uri)` Returns the `Namespace` which is mapped to the given URI or null if it could not be found.
`String` | `getNamespacePrefix()` Returns the namespace prefix of this element if one exists otherwise an empty `String` is returned.
`List` | `getNamespacesForURI(String uri)` Returns the all namespaces which are mapped to the given URI or an empty list if no such namespaces could be found.
`String` | `getNamespaceURI()` Returns the URI mapped to the namespace of this element if one exists otherwise an empty `String` is returned.
`short` | `getNodeType()` Returns the code according to the type of node.
`String` | `getPath(Element context)` Returns the relative XPath expression which will return a node set containing the given node such as a/b/@c.
`QName` | `getQName(String qualifiedName)` Returns the `QName` for the given qualified name, using the namespace URI in scope for the given prefix of the qualified name or the default namespace if the qualified name has no prefix.
`String` | `getQualifiedName()` Returns the fully qualified name of this element.
`String` | `getStringValue()` Returns the XPath string-value of this node.
`String` | `getUniquePath(Element context)` Returns the relative unique XPath expression from the given context which will return a nodeset of one node which is the current node.
`String` | `getXPathNameStep()` Returns the XPath expression to match this Elements name which is getQualifiedName() if there is a namespace prefix defined or if no namespace is present then it is getName() or if a namespace is defined with no prefix then the expression is [name()='X'] where X = getName().
`Node` | `getXPathResult(int index)` Returns a node at the given index suitable for an XPath result set.
`boolean` | `hasMixedContent()` Returns true if this `Element` has mixed content.
`int` | `indexOf(Node node)` Returns the index of the given node if it is a child node of this branch or -1 if the given node is not a child node.
`boolean` | `isRootElement()` DOCUMENT ME!
`boolean` | `isTextOnly()` Returns true if this `Element` has text only content.
`Node` | `node(int index)` Returns the `Node` at the specified index position.
`int` | `nodeCount()` Returns the number of `Node` instances that this branch contains.
`Iterator` | `nodeIterator()` Returns an iterator through the content nodes of this branch
`void` | `normalize()` Puts all `Text` nodes in the full depth of the sub-tree underneath this `Node`, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates `Text` nodes, i.e., there are neither adjacent `Text` nodes nor empty `Text` nodes.
`ProcessingInstruction` | `processingInstruction(String target)` DOCUMENT ME!
`List` | `processingInstructions()` Returns a list of all the processing instructions in this branch.
`List` | `processingInstructions(String target)` Returns a list of the processing instructions for the given target.
`boolean` | `remove(Attribute attribute)` Removes the given `Attribute` from this element.
`boolean` | `remove(CDATA cdata)` Removes the given `CDATA` if the node is an immediate child of this element.
`boolean` | `remove(Comment comment)` Removes the given `Comment` if the node is an immediate child of this branch.
`boolean` | `remove(Element element)` Removes the given `Element` if the node is an immediate child of this branch.
`boolean` | `remove(Entity entity)` Removes the given `Entity` if the node is an immediate child of this element.
`boolean` | `remove(Namespace namespace)` Removes the given `Namespace` if the node is an immediate child of this element.
`boolean` | `remove(Node node)` Removes the given `Node` if the node is an immediate child of this branch.
`boolean` | `remove(ProcessingInstruction pi)` Removes the given `ProcessingInstruction` if the node is an immediate child of this branch.
`boolean` | `remove(Text text)` Removes the given `Text` if the node is an immediate child of this element.
`protected boolean` | `removeNode(Node node)`
`boolean` | `removeProcessingInstruction(String target)` Removes the processing instruction for the given target if it exists
`void` | `setAttributes(Attributes attributes, NamespaceStack namespaceStack, boolean noNamespaceAttributes)` This method provides a more optimal way of setting all the attributes on an Element particularly for use in `SAXReader`.
`void` | `setAttributeValue(QName qName, String value)` Deprecated. As of version 0.5. Please use `addAttribute(String,String)` instead. WILL BE REMOVED IN dom4j-1.6 !!
`void` | `setAttributeValue(String name, String value)` Deprecated. As of version 0.5. Please use `addAttribute(String,String)` instead. WILL BE REMOVED IN dom4j-1.6 !!
`void` | `setData(Object data)` Sets the data value of this element if this element supports data binding or calls `setText(java.lang.String)`if it doesn't
`void` | `setName(String name)` Sets the text data of this node or this method will throw an `UnsupportedOperationException` if it is read-only.
`void` | `setNamespace(Namespace namespace)`
`void` | `setText(String text)` Sets the text data of this node or this method will throw an `UnsupportedOperationException` if it is read-only.
`String` | `toString()`
`void` | `write(Writer out)` `write` writes this node as the default XML notation for this node.

Methods inherited from class org.dom4j.tree.AbstractBranch
`addElement, addElement, addElement, appendContent, content, contentList, contentRemoved, createContentList, createContentList, createEmptyList, createResultList, createSingleResultList, elementByID, elementID, getContentAsStringValue, getContentAsText, getText, getTextTrim, hasContent, invalidNodeTypeAddException, isReadOnly, setProcessingInstructions`

Methods inherited from class org.dom4j.tree.AbstractNode
`asXPathResult, clone, createPattern, createXPath, createXPathFilter, createXPathResult, detach, getDocument, getNodeTypeName, getParent, getPath, getUniquePath, matches, numberValueOf, selectNodes, selectNodes, selectNodes, selectObject, selectSingleNode, setDocument, setParent, supportsParent, valueOf`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface org.dom4j.Element
`getQName, getText, getTextTrim, setAttributes, setQName`

Methods inherited from interface org.dom4j.Branch
`addElement, addElement, appendContent, clearContent, content, elementByID, setContent, setProcessingInstructions`

Methods inherited from interface org.dom4j.Node
`asXPathResult, clone, createXPath, detach, getDocument, getNodeTypeName, getParent, getPath, getUniquePath, hasContent, isReadOnly, matches, numberValueOf, selectNodes, selectNodes, selectNodes, selectObject, selectSingleNode, setDocument, setParent, supportsParent, valueOf`

Field Detail

### EMPTY_LIST

    protected static final List EMPTY_LIST

### EMPTY_ITERATOR

    protected static final Iterator EMPTY_ITERATOR

### VERBOSE_TOSTRING

    protected static final boolean VERBOSE_TOSTRING

See Also:
  Constant Field Values

### USE_STRINGVALUE_SEPARATOR

    protected static final boolean USE_STRINGVALUE_SEPARATOR

See Also:
  Constant Field Values

Constructor Detail

### AbstractElement

    public AbstractElement()

Method Detail

### getNodeType

    public short getNodeType()

  Description copied from interface: `Node`
  Returns the code according to the type of node. This makes processing nodes polymorphically much easier as the switch statement can be used instead of multiple if (instanceof) statements.

  Specified by:
    `getNodeType` in interface `Node`
  Overrides:
    `getNodeType` in class `AbstractNode`

### isRootElement

    public boolean isRootElement()

  Description copied from interface: `Element`
  DOCUMENT ME!

  Specified by:
    `isRootElement` in interface `Element`
  Returns:
    true if this element is the root element of a document and this element supports the parent relationship else false.

### setName

    public void setName(String name)

  Description copied from interface: `Node`

  Sets the text data of this node or this method will throw an `UnsupportedOperationException` if it is read-only.

  Specified by:
    `setName` in interface `Node`
  Overrides:
    `setName` in class `AbstractNode`

### setNamespace

    public void setNamespace(Namespace namespace)

### getXPathNameStep

    public String getXPathNameStep()

  Returns the XPath expression to match this Elements name which is getQualifiedName() if there is a namespace prefix defined or if no namespace is present then it is getName() or if a namespace is defined with no prefix then the expression is [name()='X'] where X = getName().

  Returns:
    DOCUMENT ME!

### getPath

    public String getPath(Element context)

  Description copied from interface: `Node`
  Returns the relative XPath expression which will return a node set containing the given node such as a/b/@c. No indexing will be used to restrict the path if multiple elements with the same name occur on the path.

  Specified by:
    `getPath` in interface `Node`
  Parameters:
    `context` - is the parent context from which the relative path should start. If the context is null or the context is not an ancestor of this node then the path will be absolute and start from the document and so begin with the '/' character.
  Returns:
    the XPath expression relative to the given context which will return a nodeset containing at least this node.

### getUniquePath

    public String getUniquePath(Element context)

  Description copied from interface: `Node`

  Returns the relative unique XPath expression from the given context which will return a nodeset of one node which is the current node. This method will use the XPath index operator to restrict the path if multiple elements with the same name occur on the path.

  Specified by:
    `getUniquePath` in interface `Node`
  Parameters:
    `context` - is the parent context from which the path should start. If the context is null or the context is not an ancestor of this node then the path will start from the document and so begin with the '/' character.
  Returns:
    the XPath expression relative to the given context which will return a nodeset containing just this node.

### asXML

    public String asXML()

  Description copied from interface: `Node`

  `asXML` returns the textual XML representation of this node.

  Specified by:
    `asXML` in interface `Node`
  Returns:
    the XML representation of this node

### write

    public void write(Writer out)
               throws IOException

  Description copied from interface: `Node`

  `write` writes this node as the default XML notation for this node. If you wish to control the XML output (such as for pretty printing, changing the indentation policy etc.) then please use `XMLWriter` or its derivations.

  Specified by:
    `write` in interface `Node`
  Overrides:
    `write` in class `AbstractNode`
  Throws:
    `IOException`

### accept

    public void accept(Visitor visitor)

  `accept` method is the `Visitor Pattern` method.

  Specified by:
    `accept` in interface `Node`
  Parameters:
    `visitor` - `Visitor` is the visitor.

### toString

    public String toString()

### getNamespace

    public Namespace getNamespace()

  Description copied from interface: `Element`

  Returns the `Namespace` of this element if one exists otherwise `Namespace.NO_NAMESPACE` is returned.

  Specified by:
    `getNamespace` in interface `Element`
  Returns:
    the `Namespace` associated with this element

### getName

    public String getName()

  Description copied from interface: `Node`

  `getName` returns the name of this node. This is the XML local name of the element, attribute, entity or processing instruction. For CDATA and Text nodes this method will return null.

  Specified by:
    `getName` in interface `Node`
  Overrides:
    `getName` in class `AbstractNode`

### getNamespacePrefix

    public String getNamespacePrefix()

  Description copied from interface: `Element`

  Returns the namespace prefix of this element if one exists otherwise an empty `String` is returned.

  Specified by:
    `getNamespacePrefix` in interface `Element`
  Returns:
    the prefix of the `Namespace` of this element or an empty `String`

### getNamespaceURI

    public String getNamespaceURI()

  Description copied from interface: `Element`

  Returns the URI mapped to the namespace of this element if one exists otherwise an empty `String` is returned.

  Specified by:
    `getNamespaceURI` in interface `Element`
  Returns:
    the URI for the `Namespace` of this element or an empty `String`

### getQualifiedName

    public String getQualifiedName()

  Description copied from interface: `Element`

  Returns the fully qualified name of this element. This will be the same as the value returned from `Node.getName()`if this element has no namespace attached to this element or an expression of the form

       getNamespacePrefix() + ":" + getName()

  will be returned.

  Specified by:
    `getQualifiedName` in interface `Element`
  Returns:
    the fully qualified name of the element.

### getData

    public Object getData()

  Description copied from interface: `Element`
  Accesses the data of this element which may implement data typing bindings such as XML Schema or Java Bean bindings or will return the same value as `Element.getText()`

  Specified by:
    `getData` in interface `Element`
  Returns:
    DOCUMENT ME!

### setData

    public void setData(Object data)

  Description copied from interface: `Element`
  Sets the data value of this element if this element supports data binding or calls `Node.setText(java.lang.String)`if it doesn't

  Specified by:
    `setData` in interface `Element`
  Parameters:
    `data` - DOCUMENT ME!

### node

    public Node node(int index)

  Description copied from interface: `Branch`
  Returns the `Node` at the specified index position.

  Specified by:
    `node` in interface `Branch`
  Overrides:
    `node` in class `AbstractBranch`

### indexOf

    public int indexOf(Node node)

  Description copied from interface: `Branch`
  Returns the index of the given node if it is a child node of this branch or -1 if the given node is not a child node.

  Specified by:
    `indexOf` in interface `Branch`
  Overrides:
    `indexOf` in class `AbstractBranch`

### nodeCount

    public int nodeCount()

  Description copied from interface: `Branch`
  Returns the number of `Node` instances that this branch contains.

  Specified by:
    `nodeCount` in interface `Branch`
  Overrides:
    `nodeCount` in class `AbstractBranch`

### nodeIterator

    public Iterator nodeIterator()

  Description copied from interface: `Branch`
  Returns an iterator through the content nodes of this branch

  Specified by:
    `nodeIterator` in interface `Branch`
  Overrides:
    `nodeIterator` in class `AbstractBranch`

### element

    public Element element(String name)

  Description copied from interface: `Element`
  Returns the first element for the given local name and any namespace.

  Specified by:
    `element` in interface `Element`
  Parameters:
    `name` - DOCUMENT ME!
  Returns:
    the first element with the given local name

### element

    public Element element(QName qName)

  Description copied from interface: `Element`
  Returns the first element for the given fully qualified name.

  Specified by:
    `element` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name to search for
  Returns:
    the first element with the given fully qualified name

### element

    public Element element(String name,
                           Namespace namespace)

### elements

    public List elements()

  Description copied from interface: `Element`

  Returns the elements contained in this element. If this element does not contain any elements then this method returns an empty list. The list is backed by the element such that changes to the list will be reflected in the element though the reverse is not the case.

  Specified by:
    `elements` in interface `Element`
  Returns:
    a list of all the elements in this element.

### elements

    public List elements(String name)

  Description copied from interface: `Element`

  Returns the elements contained in this element with the given local name and any namespace. If no elements are found then this method returns an empty list. The list is backed by the element such that changes to the list will be reflected in the element though the reverse is not the case.

  Specified by:
    `elements` in interface `Element`
  Parameters:
    `name` - DOCUMENT ME!
  Returns:
    a list of all the elements in this element for the given local name

### elements

    public List elements(QName qName)

  Description copied from interface: `Element`

  Returns the elements contained in this element with the given fully qualified name. If no elements are found then this method returns an empty list. The list is backed by the element such that changes to the list will be reflected in the element though the reverse is not the case.

  Specified by:
    `elements` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name to search for
  Returns:
    a list of all the elements in this element for the given fully qualified name.

### elements

    public List elements(String name,
                         Namespace namespace)

### elementIterator

    public Iterator elementIterator()

  Description copied from interface: `Element`
  Returns an iterator over all this elements child elements.

  Specified by:
    `elementIterator` in interface `Element`
  Returns:
    an iterator over the contained elements

### elementIterator

    public Iterator elementIterator(String name)

  Description copied from interface: `Element`
  Returns an iterator over the elements contained in this element which match the given local name and any namespace.

  Specified by:
    `elementIterator` in interface `Element`
  Parameters:
    `name` - DOCUMENT ME!
  Returns:
    an iterator over the contained elements matching the given local name

### elementIterator

    public Iterator elementIterator(QName qName)

  Description copied from interface: `Element`
  Returns an iterator over the elements contained in this element which match the given fully qualified name.

  Specified by:
    `elementIterator` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name to search for
  Returns:
    an iterator over the contained elements matching the given fully qualified name

### elementIterator

    public Iterator elementIterator(String name,
                                    Namespace ns)

### attributes

    public List attributes()

  Description copied from interface: `Element`

  Returns the `Attribute`instances this element contains as a backed `List`so that the attributes may be modified directly using the `List`interface. The `List` is backed by the `Element` so that changes to the list are reflected in the element and vice versa.

  Specified by:
    `attributes` in interface `Element`
  Returns:
    the attributes that this element contains as a `List`

### attributeIterator

    public Iterator attributeIterator()

  Description copied from interface: `Element`
  DOCUMENT ME!

  Specified by:
    `attributeIterator` in interface `Element`
  Returns:
    an iterator over the attributes of this element

### attribute

    public Attribute attribute(int index)

  Description copied from interface: `Element`
  Returns the attribute at the specified indexGets the

  Specified by:
    `attribute` in interface `Element`
  Parameters:
    `index` - DOCUMENT ME!
  Returns:
    the attribute at the specified index where index >= 0 and index < number of attributes or throws an IndexOutOfBoundsException if the index is not within the allowable range

### attributeCount

    public int attributeCount()

  Description copied from interface: `Element`
  DOCUMENT ME!

  Specified by:
    `attributeCount` in interface `Element`
  Returns:
    the number of attributes this element contains

### attribute

    public Attribute attribute(String name)

  Description copied from interface: `Element`
  Returns the attribute with the given name

  Specified by:
    `attribute` in interface `Element`
  Parameters:
    `name` - DOCUMENT ME!
  Returns:
    the attribute for the given local name in any namespace. If there are more than one attributes with the given local name in different namespaces then the first one is returned.

### attribute

    public Attribute attribute(QName qName)

  Description copied from interface: `Element`
  DOCUMENT ME!

  Specified by:
    `attribute` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name
  Returns:
    the attribute for the given fully qualified name or null if it could not be found.

### attribute

    public Attribute attribute(String name,
                               Namespace namespace)

### setAttributes

    public void setAttributes(Attributes attributes,
                              NamespaceStack namespaceStack,
                              boolean noNamespaceAttributes)

  This method provides a more optimal way of setting all the attributes on an Element particularly for use in `SAXReader`.

  Parameters:
    `attributes` - DOCUMENT ME!
    `namespaceStack` - DOCUMENT ME!
    `noNamespaceAttributes` - DOCUMENT ME!

### attributeValue

    public String attributeValue(String name)

  Description copied from interface: `Element`

  This returns the attribute value for the attribute with the given name and any namespace or null if there is no such attribute or the empty string if the attribute value is empty.

  Specified by:
    `attributeValue` in interface `Element`
  Parameters:
    `name` - is the name of the attribute value to be returnd
  Returns:
    the value of the attribute, null if the attribute does not exist or the empty string

### attributeValue

    public String attributeValue(QName qName)

  Description copied from interface: `Element`

  This returns the attribute value for the attribute with the given fully qualified name or null if there is no such attribute or the empty string if the attribute value is empty.

  Specified by:
    `attributeValue` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name
  Returns:
    the value of the attribute, null if the attribute does not exist or the empty string

### attributeValue

    public String attributeValue(String name,
                                 String defaultValue)

  Description copied from interface: `Element`

  This returns the attribute value for the attribute with the given name and any namespace or the default value if there is no such attribute value.

  Specified by:
    `attributeValue` in interface `Element`
  Parameters:
    `name` - is the name of the attribute value to be returnd
    `defaultValue` - is the default value to be returned if the attribute has no value defined.
  Returns:
    the value of the attribute or the defaultValue if the attribute has no value defined.

### attributeValue

    public String attributeValue(QName qName,
                                 String defaultValue)

  Description copied from interface: `Element`

  This returns the attribute value for the attribute with the given fully qualified name or the default value if there is no such attribute value.

  Specified by:
    `attributeValue` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name
    `defaultValue` - is the default value to be returned if the attribute has no value defined.
  Returns:
    the value of the attribute or the defaultValue if the attribute has no value defined.

### setAttributeValue

    public void setAttributeValue(String name,
                                  String value)

  Deprecated. As of version 0.5. Please use `addAttribute(String,String)` instead. WILL BE REMOVED IN dom4j-1.6 !!

  DOCUMENT ME!

  Specified by:
    `setAttributeValue` in interface `Element`
  Parameters:
    `name` - DOCUMENT ME!
    `value` - DOCUMENT ME!

### setAttributeValue

    public void setAttributeValue(QName qName,
                                  String value)

  Deprecated. As of version 0.5. Please use `addAttribute(String,String)` instead. WILL BE REMOVED IN dom4j-1.6 !!

  DOCUMENT ME!

  Specified by:
    `setAttributeValue` in interface `Element`
  Parameters:
    `qName` - DOCUMENT ME!
    `value` - DOCUMENT ME!

### add

    public void add(Attribute attribute)

  Description copied from interface: `Element`
  Adds the given `Attribute` to this element. If the given node already has a parent defined then an `IllegalAddException` will be thrown. Attributes with null values are silently ignored.

  If the value of the attribute is null then this method call will remove any attributes with the QName of this attribute.

  Specified by:
    `add` in interface `Element`
  Parameters:
    `attribute` - is the attribute to be added

### remove

    public boolean remove(Attribute attribute)

  Description copied from interface: `Element`
  Removes the given `Attribute` from this element.

  Specified by:
    `remove` in interface `Element`
  Parameters:
    `attribute` - is the attribute to be removed
  Returns:
    true if the attribute was removed

### processingInstructions

    public List processingInstructions()

  Description copied from interface: `Branch`

  Returns a list of all the processing instructions in this branch. The list is backed by this branch so that changes to the list will be reflected in the branch but the reverse is not the case.

  Specified by:
    `processingInstructions` in interface `Branch`
  Returns:
    a backed list of the processing instructions

### processingInstructions

    public List processingInstructions(String target)

  Description copied from interface: `Branch`

  Returns a list of the processing instructions for the given target. The list is backed by this branch so that changes to the list will be reflected in the branch but the reverse is not the case.

  Specified by:
    `processingInstructions` in interface `Branch`
  Parameters:
    `target` - DOCUMENT ME!
  Returns:
    a backed list of the processing instructions

### processingInstruction

    public ProcessingInstruction processingInstruction(String target)

  Description copied from interface: `Branch`
  DOCUMENT ME!

  Specified by:
    `processingInstruction` in interface `Branch`
  Parameters:
    `target` - DOCUMENT ME!
  Returns:
    the processing instruction for the given target

### removeProcessingInstruction

    public boolean removeProcessingInstruction(String target)

  Description copied from interface: `Branch`
  Removes the processing instruction for the given target if it exists

  Specified by:
    `removeProcessingInstruction` in interface `Branch`
  Parameters:
    `target` - DOCUMENT ME!
  Returns:
    true if a processing instruction was removed else false

### getXPathResult

    public Node getXPathResult(int index)

  Description copied from interface: `Element`
  Returns a node at the given index suitable for an XPath result set. This means the resulting Node will either be null or it will support the parent relationship.

  Specified by:
    `getXPathResult` in interface `Element`
  Parameters:
    `index` - DOCUMENT ME!
  Returns:
    the Node for the given index which will support the parent relationship or null if there is not a node at the given index.

### addAttribute

    public Element addAttribute(String name,
                                String value)

  Description copied from interface: `Element`

  Adds the attribute value of the given local name. If an attribute already exists for the given name it will be replaced. Attributes with null values are silently ignored. If the value of the attribute is null then this method call will remove any attributes with the given name.

  Specified by:
    `addAttribute` in interface `Element`
  Parameters:
    `name` - is the name of the attribute whose value is to be added or updated
    `value` - is the attribute's value
  Returns:
    this `Element` instance.

### addAttribute

    public Element addAttribute(QName qName,
                                String value)

  Description copied from interface: `Element`

  Adds the attribute value of the given fully qualified name. If an attribute already exists for the given name it will be replaced. Attributes with null values are silently ignored. If the value of the attribute is null then this method call will remove any attributes with the given name.

  Specified by:
    `addAttribute` in interface `Element`
  Parameters:
    `qName` - is the fully qualified name of the attribute whose value is to be added or updated
    `value` - is the attribute's value
  Returns:
    this `Element` instance.

### addCDATA

    public Element addCDATA(String cdata)

  Description copied from interface: `Element`
  Adds a new `CDATA` node with the given text to this element.

  Specified by:
    `addCDATA` in interface `Element`
  Parameters:
    `cdata` - is the text for the `CDATA` node.
  Returns:
    this `Element` instance.

### addComment

    public Element addComment(String comment)

  Description copied from interface: `Element`
  Adds a new `Comment` node with the given text to this element.

  Specified by:
    `addComment` in interface `Element`
  Parameters:
    `comment` - is the text for the `Comment` node.
  Returns:
    this `Element` instance.

### addElement

    public Element addElement(String name)

  Description copied from interface: `Branch`
  Adds a new `Element` node with the given name to this branch and returns a reference to the new node.

  Specified by:
    `addElement` in interface `Branch`
  Overrides:
    `addElement` in class `AbstractBranch`

### addEntity

    public Element addEntity(String name,
                             String text)

  Description copied from interface: `Element`
  Adds a new `Entity` node with the given name and text to this element and returns a reference to the new node.

  Specified by:
    `addEntity` in interface `Element`
  Parameters:
    `name` - is the name for the `Entity` node.
    `text` - is the text for the `Entity` node.
  Returns:
    this `Element` instance.

### addNamespace

    public Element addNamespace(String prefix,
                                String uri)

  Description copied from interface: `Element`
  Adds a namespace to this element for use by its child content

  Specified by:
    `addNamespace` in interface `Element`
  Parameters:
    `prefix` - is the prefix to use, which should not be null or blank
    `uri` - is the namespace URI
  Returns:
    this `Element` instance.

### addProcessingInstruction

    public Element addProcessingInstruction(String target,
                                            String data)

  Description copied from interface: `Element`
  Adds a processing instruction for the given target

  Specified by:
    `addProcessingInstruction` in interface `Element`
  Parameters:
    `target` - is the target of the processing instruction
    `data` - is the textual data (key/value pairs) of the processing instruction
  Returns:
    this `Element` instance.

### addProcessingInstruction

    public Element addProcessingInstruction(String target,
                                            Map data)

  Description copied from interface: `Element`
  Adds a processing instruction for the given target

  Specified by:
    `addProcessingInstruction` in interface `Element`
  Parameters:
    `target` - is the target of the processing instruction
    `data` - is a Map of the key / value pairs of the processing instruction
  Returns:
    this `Element` instance.

### addText

    public Element addText(String text)

  Description copied from interface: `Element`
  Adds a new `Text` node with the given text to this element.

  Specified by:
    `addText` in interface `Element`
  Parameters:
    `text` - is the text for the `Text` node.
  Returns:
    this `Element` instance.

### add

    public void add(Node node)

  Description copied from interface: `Branch`
  Adds the given `Node` or throws `IllegalAddException` if the given node is not of a valid type. This is a polymorphic method which will call the typesafe method for the node type such as add(Element) or add(Comment).

  Specified by:
    `add` in interface `Branch`
  Overrides:
    `add` in class `AbstractBranch`

### remove

    public boolean remove(Node node)

  Description copied from interface: `Branch`
  Removes the given `Node` if the node is an immediate child of this branch. If the given node is not an immediate child of this branch then the `Node.detach()`method should be used instead. This is a polymorphic method which will call the typesafe method for the node type such as remove(Element) or remove(Comment).

  Specified by:
    `remove` in interface `Branch`
  Overrides:
    `remove` in class `AbstractBranch`

### add

    public void add(CDATA cdata)

  Description copied from interface: `Element`
  Adds the given `CDATA` to this element. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Element`
  Parameters:
    `cdata` - is the CDATA to be added

### add

    public void add(Comment comment)

  Description copied from interface: `Branch`
  Adds the given `Comment` to this branch. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Branch`
  Overrides:
    `add` in class `AbstractBranch`

### add

    public void add(Element element)

  Description copied from interface: `Branch`
  Adds the given `Element` to this branch. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Branch`
  Overrides:
    `add` in class `AbstractBranch`

### add

    public void add(Entity entity)

  Description copied from interface: `Element`
  Adds the given `Entity` to this element. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Element`
  Parameters:
    `entity` - is the entity to be added

### add

    public void add(Namespace namespace)

  Description copied from interface: `Element`
  Adds the given `Namespace` to this element. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Element`
  Parameters:
    `namespace` - is the namespace to be added

### add

    public void add(ProcessingInstruction pi)

  Description copied from interface: `Branch`
  Adds the given `ProcessingInstruction` to this branch. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Branch`
  Overrides:
    `add` in class `AbstractBranch`

### add

    public void add(Text text)

  Description copied from interface: `Element`
  Adds the given `Text` to this element. If the given node already has a parent defined then an `IllegalAddException` will be thrown.

  Specified by:
    `add` in interface `Element`
  Parameters:
    `text` - is the text to be added

### remove

    public boolean remove(CDATA cdata)

  Description copied from interface: `Element`
  Removes the given `CDATA` if the node is an immediate child of this element. If the given node is not an immediate child of this element then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Element`
  Parameters:
    `cdata` - is the CDATA to be removed
  Returns:
    true if the cdata was removed

### remove

    public boolean remove(Comment comment)

  Description copied from interface: `Branch`
  Removes the given `Comment` if the node is an immediate child of this branch. If the given node is not an immediate child of this branch then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Branch`
  Overrides:
    `remove` in class `AbstractBranch`

### remove

    public boolean remove(Element element)

  Description copied from interface: `Branch`
  Removes the given `Element` if the node is an immediate child of this branch. If the given node is not an immediate child of this branch then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Branch`
  Overrides:
    `remove` in class `AbstractBranch`

### remove

    public boolean remove(Entity entity)

  Description copied from interface: `Element`
  Removes the given `Entity` if the node is an immediate child of this element. If the given node is not an immediate child of this element then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Element`
  Parameters:
    `entity` - is the entity to be removed
  Returns:
    true if the entity was removed

### remove

    public boolean remove(Namespace namespace)

  Description copied from interface: `Element`
  Removes the given `Namespace` if the node is an immediate child of this element. If the given node is not an immediate child of this element then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Element`
  Parameters:
    `namespace` - is the namespace to be removed
  Returns:
    true if the namespace was removed

### remove

    public boolean remove(ProcessingInstruction pi)

  Description copied from interface: `Branch`
  Removes the given `ProcessingInstruction` if the node is an immediate child of this branch. If the given node is not an immediate child of this branch then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Branch`
  Overrides:
    `remove` in class `AbstractBranch`

### remove

    public boolean remove(Text text)

  Description copied from interface: `Element`
  Removes the given `Text` if the node is an immediate child of this element. If the given node is not an immediate child of this element then the `Node.detach()`method should be used instead.

  Specified by:
    `remove` in interface `Element`
  Parameters:
    `text` - is the text to be removed
  Returns:
    true if the text was removed

### hasMixedContent

    public boolean hasMixedContent()

  Description copied from interface: `Element`

  Returns true if this `Element` has mixed content. Mixed content means that an element contains both textual data and child elements.

  Specified by:
    `hasMixedContent` in interface `Element`
  Returns:
    true if this element contains mixed content.

### isTextOnly

    public boolean isTextOnly()

  Description copied from interface: `Element`

  Returns true if this `Element` has text only content.

  Specified by:
    `isTextOnly` in interface `Element`
  Returns:
    true if this element is empty or only contains text content.

### setText

    public void setText(String text)

  Description copied from interface: `Node`

  Sets the text data of this node or this method will throw an `UnsupportedOperationException` if it is read-only.

  Specified by:
    `setText` in interface `Node`
  Overrides:
    `setText` in class `AbstractNode`

### getStringValue

    public String getStringValue()

  Description copied from interface: `Element`
  Returns the XPath string-value of this node. The behaviour of this method is defined in the XPath specification . This method returns the string-value of all the contained `Text`,`CDATA`,`Entity`and `Element` nodes all appended together.

  Specified by:
    `getStringValue` in interface `Element`
  Overrides:
    `getStringValue` in class `AbstractNode`

### normalize

    public void normalize()

  Puts all `Text` nodes in the full depth of the sub-tree underneath this `Node`, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates `Text` nodes, i.e., there are neither adjacent `Text` nodes nor empty `Text` nodes. This can be used to ensure that the DOM view of a document is the same as if it were saved and re-loaded, and is useful when operations (such as XPointer lookups) that depend on a particular document tree structure are to be used.In cases where the document contains `CDATASections`, the normalize operation alone may not be sufficient, since XPointers do not differentiate between `Text` nodes and `CDATASection` nodes.

  Specified by:
    `normalize` in interface `Branch`
  Since:
    DOM Level 2

### elementText

    public String elementText(String name)

  Specified by:
    `elementText` in interface `Element`

### elementText

    public String elementText(QName qName)

  Specified by:
    `elementText` in interface `Element`

### elementTextTrim

    public String elementTextTrim(String name)

  Specified by:
    `elementTextTrim` in interface `Element`

### elementTextTrim

    public String elementTextTrim(QName qName)

  Specified by:
    `elementTextTrim` in interface `Element`

### appendAttributes

    public void appendAttributes(Element element)

  Description copied from interface: `Element`
  Appends the attributes of the given element to me. This method behaves like the `Collection.addAll(java.util.Collection)` method.

  Specified by:
    `appendAttributes` in interface `Element`
  Parameters:
    `element` - is the element whose attributes will be added to me.

### createCopy

    public Element createCopy()

  This returns a deep clone of this element. The new element is detached from its parent, and getParent() on the clone will return null.

  Specified by:
    `createCopy` in interface `Element`
  Returns:
    the clone of this element

### createCopy

    public Element createCopy(String name)

  Description copied from interface: `Element`

  Creates a deep copy of this element with the given local name The new element is detached from its parent, and getParent() on the clone will return null.

  Specified by:
    `createCopy` in interface `Element`
  Parameters:
    `name` - DOCUMENT ME!
  Returns:
    a new deep copy Element

### createCopy

    public Element createCopy(QName qName)

  Description copied from interface: `Element`

  Creates a deep copy of this element with the given fully qualified name. The new element is detached from its parent, and getParent() on the clone will return null.

  Specified by:
    `createCopy` in interface `Element`
  Parameters:
    `qName` - DOCUMENT ME!
  Returns:
    a new deep copy Element

### getQName

    public QName getQName(String qualifiedName)

  Description copied from interface: `Element`

  Returns the `QName` for the given qualified name, using the namespace URI in scope for the given prefix of the qualified name or the default namespace if the qualified name has no prefix.

  Specified by:
    `getQName` in interface `Element`
  Parameters:
    `qualifiedName` - DOCUMENT ME!
  Returns:
    the `QName` for the given qualified name

### getNamespaceForPrefix

    public Namespace getNamespaceForPrefix(String prefix)

  Description copied from interface: `Element`

  Returns the `Namespace` which is mapped to the given prefix or null if it could not be found.

  Specified by:
    `getNamespaceForPrefix` in interface `Element`
  Parameters:
    `prefix` - DOCUMENT ME!
  Returns:
    the `Namespace` associated with the given prefix

### getNamespaceForURI

    public Namespace getNamespaceForURI(String uri)

  Description copied from interface: `Element`

  Returns the `Namespace` which is mapped to the given URI or null if it could not be found. If there is more than one `Namespace` mapped to the URI, which of them will be returned is undetermined.

  Specified by:
    `getNamespaceForURI` in interface `Element`
  Parameters:
    `uri` - DOCUMENT ME!
  Returns:
    the `Namespace` associated with the given URI

### getNamespacesForURI

    public List getNamespacesForURI(String uri)

  Description copied from interface: `Element`

  Returns the all namespaces which are mapped to the given URI or an empty list if no such namespaces could be found.

  Specified by:
    `getNamespacesForURI` in interface `Element`
  Parameters:
    `uri` - DOCUMENT ME!
  Returns:
    the namespaces associated with the given URI

### declaredNamespaces

    public List declaredNamespaces()

  Description copied from interface: `Element`

  Returns all the namespaces declared by this element. If no namespaces are declared for this element then an empty list will be returned. The list is backed by the element such that changes to the list will be reflected in the element though the reverse is not the case.

  Specified by:
    `declaredNamespaces` in interface `Element`
  Returns:
    a list of namespaces declared for this element.

### additionalNamespaces

    public List additionalNamespaces()

  Description copied from interface: `Element`

  Returns any additional namespaces declarations for this element other than namespace returned via the `Element.getNamespace()`method. If no additional namespace declarations are present for this element then an empty list will be returned. The list is backed by the element such that changes to the list will be reflected in the element though the reverse is not the case.

  Specified by:
    `additionalNamespaces` in interface `Element`
  Returns:
    a list of any additional namespace declarations.

### additionalNamespaces

    public List additionalNamespaces(String defaultNamespaceURI)

### ensureAttributesCapacity

    public void ensureAttributesCapacity(int minCapacity)

  Ensures that the list of attributes has the given size

  Parameters:
    `minCapacity` - DOCUMENT ME!

### createElement

    protected Element createElement(String name)

### createElement

    protected Element createElement(QName qName)

### addNode

    protected void addNode(Node node)

  Specified by:
    `addNode` in class `AbstractBranch`

### addNode

    protected void addNode(int index,
                           Node node)

  Specified by:
    `addNode` in class `AbstractBranch`

### addNewNode

    protected void addNewNode(Node node)

  Like addNode() but does not require a parent check

  Parameters:
    `node` - DOCUMENT ME!

### addNewNode

    protected void addNewNode(int index,
                              Node node)

### removeNode

    protected boolean removeNode(Node node)

  Specified by:
    `removeNode` in class `AbstractBranch`

### childAdded

    protected void childAdded(Node node)

  Called when a new child node is added to create any parent relationships

  Specified by:
    `childAdded` in class `AbstractBranch`
  Parameters:
    `node` - DOCUMENT ME!

### childRemoved

    protected void childRemoved(Node node)

  Description copied from class: `AbstractBranch`
  Called when a child node has been removed to allow any parent relationships to be deleted or events to be fired.

  Specified by:
    `childRemoved` in class `AbstractBranch`
  Parameters:
    `node` - DOCUMENT ME!

### attributeList

    protected abstract List attributeList()

  DOCUMENT ME!

  Returns:
    the internal List used to store attributes or creates one if one is not available

### attributeList

    protected abstract List attributeList(int attributeCount)

  DOCUMENT ME!

  Parameters:
    `attributeCount` - DOCUMENT ME!
  Returns:
    the internal List used to store attributes or creates one with the specified size if one is not available

### getDocumentFactory

    protected DocumentFactory getDocumentFactory()

  Overrides:
    `getDocumentFactory` in class `AbstractNode`

### createAttributeList

    protected List createAttributeList()

  A Factory Method pattern which creates a List implementation used to store attributes

  Returns:
    DOCUMENT ME!

### createAttributeList

    protected List createAttributeList(int size)

  A Factory Method pattern which creates a List implementation used to store attributes

  Parameters:
    `size` - DOCUMENT ME!
  Returns:
    DOCUMENT ME!

### createSingleIterator

    protected Iterator createSingleIterator(Object result)

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