# Class DOMSource

java.lang.Object
javax.xml.transform.dom.DOMSource

All Implemented Interfaces:
  `Source`

public class DOMSource extends Object implements Source

Acts as a holder for a transformation Source tree in the form of a Document Object Model (DOM) tree.

Note that XSLT requires namespace support. Attempting to transform a DOM that was not constructed with a namespace-aware parser may result in errors. Parsers can be made namespace aware by calling `DocumentBuilderFactory.setNamespaceAware(boolean awareness)`.

Since:
  1.4
See Also:
  - Document Object Model (DOM) Level 2 Specification

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final String`
  `FEATURE`
  If `TransformerFactory.getFeature(String)` returns true when passed this value as an argument, the Transformer supports Source input of this type.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `DOMSource()`
  Zero-argument default constructor.
  `DOMSource(Node n)`
  Create a new input source with a DOM node.
  `DOMSource(Node node, String systemID)`
  Create a new input source with a DOM node, and with the system ID also passed in as the base URI.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Node`
  `getNode()`
  Get the node that represents a Source DOM tree.
  `String`
  `getSystemId()`
  Get the base ID (URL or system ID) from where URLs will be resolved.
  `boolean`
  `isEmpty()`
  Indicates whether the `DOMSource` object is empty.
  `void`
  `setNode(Node node)`
  Set the node that will represents a Source DOM tree.
  `void`
  `setSystemId(String systemID)`
  Set the base ID (URL or system ID) from where URLs will be resolved.

  ### Methods declared in class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### FEATURE

    public static final String FEATURE
    If `TransformerFactory.getFeature(String)` returns true when passed this value as an argument, the Transformer supports Source input of this type.
    See Also:
      - Constant Field Values

- ## Constructor Details

  - ### DOMSource

    public DOMSource()

    Zero-argument default constructor. If this constructor is used, and no DOM source is set using `setNode(Node node)` , then the `Transformer` will create an empty source `Document` using `DocumentBuilder.newDocument()`.

    See Also:
      - `Transformer.transform(Source xmlSource, Result outputTarget)`

  - ### DOMSource

    public DOMSource(Node n)
    Create a new input source with a DOM node. The operation will be applied to the subtree rooted at this node. In XSLT, a "/" pattern still means the root of the tree (not the subtree), and the evaluation of global variables and parameters is done from the root node also.
    Parameters:
      `n` - The DOM node that will contain the Source tree.

  - ### DOMSource

    public DOMSource(Node node, String systemID)
    Create a new input source with a DOM node, and with the system ID also passed in as the base URI.
    Parameters:
      `node` - The DOM node that will contain the Source tree.
      `systemID` - Specifies the base URI associated with node.

- ## Method Details

  - ### setNode

    public void setNode(Node node)
    Set the node that will represents a Source DOM tree.
    Parameters:
      `node` - The node that is to be transformed.

  - ### getNode

    public Node getNode()
    Get the node that represents a Source DOM tree.
    Returns:
      The node that is to be transformed.

  - ### setSystemId

    public void setSystemId(String systemID)
    Set the base ID (URL or system ID) from where URLs will be resolved.
    Specified by:
      `setSystemId` in interface `Source`
    Parameters:
      `systemID` - Base URL for this DOM tree.

  - ### getSystemId

    public String getSystemId()
    Get the base ID (URL or system ID) from where URLs will be resolved.
    Specified by:
      `getSystemId` in interface `Source`
    Returns:
      Base URL for this DOM tree.

  - ### isEmpty

    public boolean isEmpty()
    Indicates whether the `DOMSource` object is empty. Empty is defined as follows:
    - if the system identifier and node are `null`;
    - if the system identifier is null, and the `node` has no child nodes.
    Specified by:
      `isEmpty` in interface `Source`
    Returns:
      true if the `DOMSource` object is empty, false otherwise