DOMImplementationRegistry (Java Platform SE 8 )
Keywords: org.w3c.dom.bootstrap.DOMImplementationRegistry class
Date: 2016-10-23

compact2, compact3
org.w3c.dom.bootstrap

## Class DOMImplementationRegistry

- java.lang.Object
- - org.w3c.dom.bootstrap.DOMImplementationRegistry

-     public final class DOMImplementationRegistry
      extends Object

  A factory that enables applications to obtain instances of `DOMImplementation`.

  Example:

        // get an instance of the DOMImplementation registry
        DOMImplementationRegistry registry =
             DOMImplementationRegistry.newInstance();
        // get a DOM implementation the Level 3 XML module
        DOMImplementation domImpl =
             registry.getDOMImplementation("XML 3.0");

  This provides an application with an implementation-independent starting point. DOM implementations may modify this class to meet new security standards or to provide *additional* fallbacks for the list of DOMImplementationSources.

  Since:
    DOM Level 3
  See Also:
    `DOMImplementation`, `DOMImplementationSource`

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `PROPERTY` The system property to specify the DOMImplementationSource class names.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addSource(DOMImplementationSource s)` Register an implementation.
    `DOMImplementation` | `getDOMImplementation(String features)` Return the first implementation that has the desired features, or `null` if none is found.
    `DOMImplementationList` | `getDOMImplementationList(String features)` Return a list of implementations that support the desired features.
    `static DOMImplementationRegistry` | `newInstance()` Obtain a new instance of a `DOMImplementationRegistry`.

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### PROPERTY

          public static final String PROPERTY

      The system property to specify the DOMImplementationSource class names.
      See Also:
        Constant Field Values

  - ### Method Detail

    - #### newInstance

          public static DOMImplementationRegistry newInstance()
                                                       throws ClassNotFoundException,
                                                              InstantiationException,
                                                              IllegalAccessException,
                                                              ClassCastException

      Obtain a new instance of a `DOMImplementationRegistry`. The `DOMImplementationRegistry` is initialized by the application or the implementation, depending on the context, by first checking the value of the Java system property `org.w3c.dom.DOMImplementationSourceList` and the service provider whose contents are at "`META_INF/services/org.w3c.dom.DOMImplementationSourceList`". The value of this property is a white-space separated list of names of availables classes implementing the `DOMImplementationSource` interface. Each class listed in the class name list is instantiated and any exceptions encountered are thrown to the application.
      Returns:
        an initialized instance of DOMImplementationRegistry
      Throws:
        `ClassNotFoundException` - If any specified class can not be found
        `InstantiationException` - If any specified class is an interface or abstract class
        `IllegalAccessException` - If the default constructor of a specified class is not accessible
        `ClassCastException` - If any specified class does not implement `DOMImplementationSource`

    - #### getDOMImplementation

          public DOMImplementation getDOMImplementation(String features)

      Return the first implementation that has the desired features, or `null` if none is found.
      Parameters:
        `features` - A string that specifies which features are required. This is a space separated list in which each feature is specified by its name optionally followed by a space and a version number. This is something like: "XML 1.0 Traversal +Events 2.0"
      Returns:
        An implementation that has the desired features, or `null` if none found.

    - #### getDOMImplementationList

          public DOMImplementationList getDOMImplementationList(String features)

      Return a list of implementations that support the desired features.
      Parameters:
        `features` - A string that specifies which features are required. This is a space separated list in which each feature is specified by its name optionally followed by a space and a version number. This is something like: "XML 1.0 Traversal +Events 2.0"
      Returns:
        A list of DOMImplementations that support the desired features.

    - #### addSource

          public void addSource(DOMImplementationSource s)

      Register an implementation.
      Parameters:
        `s` - The source to be registered, may not be `null`

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