Package net.sf.saxon.query

## Class SequenceWrapper

- java.lang.Object
- - net.sf.saxon.event.SequenceReceiver
  - - net.sf.saxon.query.SequenceWrapper

- All Implemented Interfaces:
    `javax.xml.transform.Result`, `Receiver`

      public class SequenceWrapper
      extends SequenceReceiver

  This class can be used in a push pipeline: it accepts any sequence as input, and generates a document in which the items of the sequence are wrapped by elements containing information about the types of the items in the input sequence.

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static java.lang.String` | `RESULT_NS` |

    - ### Fields inherited from class net.sf.saxon.event.SequenceReceiver

      `pipelineConfiguration, previousAtomic, systemId`

    - ### Fields inherited from interface javax.xml.transform.Result

      `PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `SequenceWrapper​(Receiver destination)` | Create a sequence wrapper.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `append​(Item item, Location locationId, int copyNamespaces)` | Output an item (atomic value or node) to the sequence
    `void` | `characters​(java.lang.CharSequence chars, Location locationId, int properties)` | Character data
    `void` | `close()` | Notify the end of the event stream
    `void` | `comment​(java.lang.CharSequence chars, Location locationId, int properties)` | Output a comment
    `void` | `endDocument()` | Notify the end of a document node
    `void` | `endElement()` | End of element
    `ComplexContentOutputter` | `getDestination()` |
    `void` | `open()` | Start the output process
    `void` | `processingInstruction​(java.lang.String target, java.lang.CharSequence data, Location locationId, int properties)` | Processing Instruction
    `void` | `startDocument​(int properties)` | Start of a document node.
    `void` | `startElement​(NodeName elemName, SchemaType type, AttributeMap attributes, NamespaceMap namespaces, Location location, int properties)` | Notify the start of an element
    `boolean` | `usesTypeAnnotations()` | Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations supplied on element and attribute events

    - ### Methods inherited from class net.sf.saxon.event.SequenceReceiver

      `append, decompose, flatten, getConfiguration, getErrorCodeForDecomposingFunctionItems, getNamePool, getPipelineConfiguration, getSystemId, handlesAppend, setPipelineConfiguration, setSystemId, setUnparsedEntity`

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

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

- - ### Field Detail

    - #### RESULT_NS

          public static final java.lang.String RESULT_NS

  - ### Constructor Detail

    - #### SequenceWrapper

          public SequenceWrapper​(Receiver destination)

      Create a sequence wrapper. This creates an XML representation of the items sent to destination in which the types of all items are made explicit
      Parameters:
        `destination` - the sequence being wrapped

  - ### Method Detail

    - #### getDestination

          public ComplexContentOutputter getDestination()

    - #### open

          public void open()
                    throws XPathException

      Description copied from class: `SequenceReceiver`
      Start the output process
      Specified by:
        `open` in interface `Receiver`
      Overrides:
        `open` in class `SequenceReceiver`
      Throws:
        `XPathException` - if an error occurs

    - #### startDocument

          public void startDocument​(int properties)
                             throws XPathException

      Start of a document node.
      Parameters:
        `properties` - properties of the document node
      Throws:
        `XPathException` - if an error occurs

    - #### endDocument

          public void endDocument()
                           throws XPathException

      Notify the end of a document node
      Throws:
        `XPathException` - if an error occurs

    - #### startElement

          public void startElement​(NodeName elemName,
                                   SchemaType type,
                                   AttributeMap attributes,
                                   NamespaceMap namespaces,
                                   Location location,
                                   int properties)
                            throws XPathException

      Notify the start of an element
      Parameters:
        `elemName` - the name of the element.
        `type` - the type annotation of the element.
        `attributes` - the attributes of this element
        `namespaces` - the in-scope namespaces of this element: generally this is all the in-scope namespaces, without relying on inheriting namespaces from parent elements
        `location` - an object providing information about the module, line, and column where the node originated
        `properties` - bit-significant properties of the element node. If there are no relevant properties, zero is supplied. The definitions of the bits are in class `ReceiverOption`
      Throws:
        `XPathException` - if an error occurs

    - #### endElement

          public void endElement()
                          throws XPathException

      End of element
      Throws:
        `XPathException` - if an error occurs

    - #### characters

          public void characters​(java.lang.CharSequence chars,
                                 Location locationId,
                                 int properties)
                          throws XPathException

      Character data
      Parameters:
        `chars` - The characters
        `locationId` - provides information such as line number and system ID.
        `properties` - Bit significant value. The following bits are defined:
        DISABLE_ESCAPING
          Disable escaping for this text node
        USE_CDATA
          Output as a CDATA section
      Throws:
        `XPathException` - if an error occurs

    - #### comment

          public void comment​(java.lang.CharSequence chars,
                              Location locationId,
                              int properties)
                       throws XPathException

      Output a comment
      Parameters:
        `chars` - The content of the comment
        `locationId` - provides information such as line number and system ID.
        `properties` - Additional information about the comment.
      Throws:
        `XPathException` - if an error occurs

    - #### processingInstruction

          public void processingInstruction​(java.lang.String target,
                                            java.lang.CharSequence data,
                                            Location locationId,
                                            int properties)
                                     throws XPathException

      Processing Instruction
      Parameters:
        `target` - The PI name. This must be a legal name (it will not be checked).
        `data` - The data portion of the processing instruction
        `locationId` - provides information such as line number and system ID.
        `properties` - Additional information about the PI.
      Throws:
        `XPathException` - if an error occurs

    - #### append

          public void append​(Item item,
                             Location locationId,
                             int copyNamespaces)
                      throws XPathException

      Output an item (atomic value or node) to the sequence
      Specified by:
        `append` in interface `Receiver`
      Specified by:
        `append` in class `SequenceReceiver`
      Parameters:
        `item` - the item to be appended
        `locationId` - the location of the calling instruction, for diagnostics
        `copyNamespaces` - if the item is an element node, this indicates whether its namespaces need to be copied. Values are `ReceiverOption.ALL_NAMESPACES`; the default (0) means
      Throws:
        `XPathException` - if an error occurs

    - #### close

          public void close()
                     throws XPathException

      Notify the end of the event stream
      Throws:
        `XPathException` - if an error occurs

    - #### usesTypeAnnotations

          public boolean usesTypeAnnotations()

      Ask whether this Receiver (or the downstream pipeline) makes any use of the type annotations supplied on element and attribute events
      Returns:
        true if the Receiver makes any use of this information. If false, the caller may supply untyped nodes instead of supplying the type annotation