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## javax.xml.stream
Class XMLOutputFactory

    java.lang.Object
      javax.xml.stream.XMLOutputFactory

    public abstract class XMLOutputFactory

extends Object

Defines an abstract implementation of a factory for getting XMLEventWriters and XMLStreamWriters. The following table defines the standard properties of this specification. Each property varies in the level of support required by each implementation. The level of support required is described in the 'Required' column.

Configuration parameters
Property Name | Behavior | Return type | Default Value | Required
--- | --- | --- | --- | ---
javax.xml.stream.isRepairingNamespaces | defaults prefixes on the output side | Boolean | False | Yes

The following paragraphs describe the namespace and prefix repair algorithm:

The property can be set with the following code line: `setProperty("javax.xml.stream.isRepairingNamespaces",new Boolean(true|false));`

This property specifies that the writer default namespace prefix declarations. The default value is false.

If a writer isRepairingNamespaces it will create a namespace declaration on the current StartElement for any attribute that does not currently have a namespace declaration in scope. If the StartElement has a uri but no prefix specified a prefix will be assigned, if the prefix has not been declared in a parent of the current StartElement it will be declared on the current StartElement. If the defaultNamespace is bound and in scope and the default namespace matches the URI of the attribute or StartElement QName no prefix will be assigned.

If an element or attribute name has a prefix, but is not bound to any namespace URI, then the prefix will be removed during serialization.

If element and/or attribute names in the same start or empty-element tag are bound to different namespace URIs and are using the same prefix then the element or the first occurring attribute retains the original prefix and the following attributes have their prefixes replaced with a new prefix that is bound to the namespace URIs of those attributes.

If an element or attribute name uses a prefix that is bound to a different URI than that inherited from the namespace context of the parent of that element and there is no namespace declaration in the context of the current element then such a namespace declaration is added.

If an element or attribute name is bound to a prefix and there is a namespace declaration that binds that prefix to a different URI then that namespace declaration is either removed if the correct mapping is inherited from the parent context of that element, or changed to the namespace URI of the element or attribute using that prefix.

Since:
  1.6
See Also:
  `XMLInputFactory`, `XMLEventWriter`, `XMLStreamWriter`

Field Summary
`static String` | `IS_REPAIRING_NAMESPACES` Property used to set prefix defaulting on the output side

Constructor Summary
`protected` | `XMLOutputFactory()`

Method Summary
`abstract XMLEventWriter` | `createXMLEventWriter(OutputStream stream)` Create a new XMLEventWriter that writes to a stream
`abstract XMLEventWriter` | `createXMLEventWriter(OutputStream stream, String encoding)` Create a new XMLEventWriter that writes to a stream
`abstract XMLEventWriter` | `createXMLEventWriter(Result result)` Create a new XMLEventWriter that writes to a JAXP result.
`abstract XMLEventWriter` | `createXMLEventWriter(Writer stream)` Create a new XMLEventWriter that writes to a writer
`abstract XMLStreamWriter` | `createXMLStreamWriter(OutputStream stream)` Create a new XMLStreamWriter that writes to a stream
`abstract XMLStreamWriter` | `createXMLStreamWriter(OutputStream stream, String encoding)` Create a new XMLStreamWriter that writes to a stream
`abstract XMLStreamWriter` | `createXMLStreamWriter(Result result)` Create a new XMLStreamWriter that writes to a JAXP result.
`abstract XMLStreamWriter` | `createXMLStreamWriter(Writer stream)` Create a new XMLStreamWriter that writes to a writer
`abstract Object` | `getProperty(String name)` Get a feature/property on the underlying implementation
`abstract boolean` | `isPropertySupported(String name)` Query the set of properties that this factory supports.
`static XMLOutputFactory` | `newInstance()` Create a new instance of the factory.
`static XMLInputFactory` | `newInstance(String factoryId, ClassLoader classLoader)` Create a new instance of the factory.
`abstract void` | `setProperty(String name, Object value)` Allows the user to set specific features/properties on the underlying implementation.

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

Field Detail

### IS_REPAIRING_NAMESPACES

    public static final String IS_REPAIRING_NAMESPACES

  Property used to set prefix defaulting on the output side

  See Also:
    Constant Field Values

Constructor Detail

### XMLOutputFactory

    protected XMLOutputFactory()

Method Detail

### newInstance

    public static XMLOutputFactory newInstance()
                                        throws FactoryConfigurationError

  Create a new instance of the factory.

  Throws:
    `FactoryConfigurationError` - if an instance of this factory cannot be loaded

### newInstance

    public static XMLInputFactory newInstance(String factoryId,
                                              ClassLoader classLoader)
                                       throws FactoryConfigurationError

  Create a new instance of the factory.

  Parameters:
    `factoryId` - Name of the factory to find, same as a property name
    `classLoader` - classLoader to use
  Returns:
    the factory implementation
  Throws:
    `FactoryConfigurationError` - if an instance of this factory cannot be loaded

### createXMLStreamWriter

    public abstract XMLStreamWriter createXMLStreamWriter(Writer stream)
                                                   throws XMLStreamException

  Create a new XMLStreamWriter that writes to a writer

  Parameters:
    `stream` - the writer to write to
  Throws:
    `XMLStreamException`

### createXMLStreamWriter

    public abstract XMLStreamWriter createXMLStreamWriter(OutputStream stream)
                                                   throws XMLStreamException

  Create a new XMLStreamWriter that writes to a stream

  Parameters:
    `stream` - the stream to write to
  Throws:
    `XMLStreamException`

### createXMLStreamWriter

    public abstract XMLStreamWriter createXMLStreamWriter(OutputStream stream,
                                                          String encoding)
                                                   throws XMLStreamException

  Create a new XMLStreamWriter that writes to a stream

  Parameters:
    `stream` - the stream to write to
    `encoding` - the encoding to use
  Throws:
    `XMLStreamException`

### createXMLStreamWriter

    public abstract XMLStreamWriter createXMLStreamWriter(Result result)
                                                   throws XMLStreamException

  Create a new XMLStreamWriter that writes to a JAXP result. This method is optional.

  Parameters:
    `result` - the result to write to
  Throws:
    `UnsupportedOperationException` - if this method is not supported by this XMLOutputFactory
    `XMLStreamException`

### createXMLEventWriter

    public abstract XMLEventWriter createXMLEventWriter(Result result)
                                                 throws XMLStreamException

  Create a new XMLEventWriter that writes to a JAXP result. This method is optional.

  Parameters:
    `result` - the result to write to
  Throws:
    `UnsupportedOperationException` - if this method is not supported by this XMLOutputFactory
    `XMLStreamException`

### createXMLEventWriter

    public abstract XMLEventWriter createXMLEventWriter(OutputStream stream)
                                                 throws XMLStreamException

  Create a new XMLEventWriter that writes to a stream

  Parameters:
    `stream` - the stream to write to
  Throws:
    `XMLStreamException`

### createXMLEventWriter

    public abstract XMLEventWriter createXMLEventWriter(OutputStream stream,
                                                        String encoding)
                                                 throws XMLStreamException

  Create a new XMLEventWriter that writes to a stream

  Parameters:
    `stream` - the stream to write to
    `encoding` - the encoding to use
  Throws:
    `XMLStreamException`

### createXMLEventWriter

    public abstract XMLEventWriter createXMLEventWriter(Writer stream)
                                                 throws XMLStreamException

  Create a new XMLEventWriter that writes to a writer

  Parameters:
    `stream` - the stream to write to
  Throws:
    `XMLStreamException`

### setProperty

    public abstract void setProperty(String name,
                                     Object value)
                              throws IllegalArgumentException

  Allows the user to set specific features/properties on the underlying implementation.

  Parameters:
    `name` - The name of the property
    `value` - The value of the property
  Throws:
    `IllegalArgumentException` - if the property is not supported

### getProperty

    public abstract Object getProperty(String name)
                                throws IllegalArgumentException

  Get a feature/property on the underlying implementation

  Parameters:
    `name` - The name of the property
  Returns:
    The value of the property
  Throws:
    `IllegalArgumentException` - if the property is not supported

### isPropertySupported

    public abstract boolean isPropertySupported(String name)

  Query the set of properties that this factory supports.

  Parameters:
    `name` - The name of the property (may not be null)
  Returns:
    true if the property is supported and false otherwise

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