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## net.sf.saxon.event
Interface Receiver

All Superinterfaces:
  javax.xml.transform.Result

All Known Implementing Classes:
  Builder, com.saxonica.Checker, Emitter, SequenceReceiver, Sink

public interface Receiver
extends javax.xml.transform.Result

Receiver: This interface represents a recipient of XML tree-walking (push) events. It is based on SAX2's ContentHandler, but adapted to handle additional events, and to use Saxon's name pool. Namespaces and Attributes are handled by separate events following the startElement event. Schema types can be defined for elements and attributes.

The Receiver interface is an important internal interface within Saxon, and provides a powerful mechanism for integrating Saxon with other applications. It has been designed with extensibility and stability in mind. However, it should be considered as an interface designed primarily for internal use, and not as a completely stable part of the public Saxon API.

Field Summary

Fields inherited from interface javax.xml.transform.Result
`PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING`

Method Summary
`void` | `attribute(int nameCode, int typeCode, java.lang.CharSequence value, int locationId, int properties)` Notify an attribute.
`void` | `characters(java.lang.CharSequence chars, int locationId, int properties)` Notify character data.
`void` | `close()` Notify the end of the event stream
`void` | `comment(java.lang.CharSequence content, int locationId, int properties)` Notify a comment.
`void` | `endDocument()` Notify the end of a document node
`void` | `endElement()` Notify the end of an element.
`PipelineConfiguration` | `getPipelineConfiguration()` Get the pipeline configuration
`void` | `namespace(int namespaceCode, int properties)` Notify a namespace.
`void` | `open()` Notify the start of the event stream
`void` | `processingInstruction(java.lang.String name, java.lang.CharSequence data, int locationId, int properties)` Output a processing instruction
`void` | `setPipelineConfiguration(PipelineConfiguration config)` Set the pipeline configuration
`void` | `setSystemId(java.lang.String systemId)` Set the System ID of the destination tree
`void` | `setUnparsedEntity(java.lang.String name, java.lang.String systemID, java.lang.String publicID)` Notify an unparsed entity URI.
`void` | `startContent()` Notify the start of the content, that is, the completion of all attributes and namespaces.
`void` | `startDocument(int properties)` Notify the start of a document node
`void` | `startElement(int nameCode, int typeCode, int locationId, int properties)` Notify the start of an element

Methods inherited from interface javax.xml.transform.Result
`getSystemId`

Method Detail

### setPipelineConfiguration

    public void setPipelineConfiguration(PipelineConfiguration config)

  Set the pipeline configuration

### getPipelineConfiguration

    public PipelineConfiguration getPipelineConfiguration()

  Get the pipeline configuration

### setSystemId

    public void setSystemId(java.lang.String systemId)

  Set the System ID of the destination tree

  Specified by:
    `setSystemId` in interface `javax.xml.transform.Result`

### open

    public void open()
              throws XPathException

  Notify the start of the event stream

  Throws:
    `XPathException`

### startDocument

    public void startDocument(int properties)
                       throws XPathException

  Notify the start of a document node

  Throws:
    `XPathException`

### endDocument

    public void endDocument()
                     throws XPathException

  Notify the end of a document node

  Throws:
    `XPathException`

### setUnparsedEntity

    public void setUnparsedEntity(java.lang.String name,
                                  java.lang.String systemID,
                                  java.lang.String publicID)
                           throws XPathException

  Notify an unparsed entity URI.

  Parameters:
    `name` - The name of the unparsed entity
    `systemID` - The system identifier of the unparsed entity
    `publicID` - The public identifier of the unparsed entity
  Throws:
    `XPathException`

### startElement

    public void startElement(int nameCode,
                             int typeCode,
                             int locationId,
                             int properties)
                      throws XPathException

  Notify the start of an element

  Parameters:
    `nameCode` - integer code identifying the name of the element within the name pool.
    `typeCode` - integer code identifying the element's type within the name pool. The value -1 indicates the default type, xdt:untyped.
    `locationId` - an integer which can be interpreted using a LocationMap to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - bit-significant properties of the element node. If there are no revelant properties, zero is supplied.
  Throws:
    `XPathException`

### namespace

    public void namespace(int namespaceCode,
                          int properties)
                   throws XPathException

  Notify a namespace. Namespaces are notified after the startElement event, and before any children for the element. The namespaces that are reported are only required to include those that are different from the parent element. The events represent namespace declarations and undeclarations rather than in-scope namespace nodes: an undeclaration is represented by a namespace code of zero. If the sequence of namespace events contains two A namespace must not conflict with any namespaces already used for element or attribute names.

  Parameters:
    `namespaceCode` - an integer: the top half is a prefix code, the bottom half a URI code. These may be translated into an actual prefix and URI using the name pool. A prefix code of zero represents the empty prefix (that is, the default namespace). A URI code of zero represents a URI of "", that is, a namespace undeclaration.
    `properties` - The most important property is REJECT_DUPLICATES. If this property is set, the namespace declaration will be rejected if it conflicts with a previous declaration of the same prefix. If the property is not set, the namespace declaration will be ignored if it conflicts with a previous declaration. This reflects the fact that when copying a tree, namespaces for child elements are emitted before the namespaces of their parent element. Unfortunately this conflicts with the XSLT rule for complex content construction, where the recovery action in the event of conflicts is to take the namespace that comes last. XSLT therefore doesn't recover from this error: it sets the REJECT_DUPLICATES flag, and this is treated as a hard error.
  Throws:
    `XPathException`

### attribute

    public void attribute(int nameCode,
                          int typeCode,
                          java.lang.CharSequence value,
                          int locationId,
                          int properties)
                   throws XPathException

  Notify an attribute. Attributes are notified after the startElement event, and before any children. Namespaces and attributes may be intermingled.

  Parameters:
    `nameCode` - The name of the attribute, as held in the name pool
    `typeCode` - The type of the attribute, as held in the name pool. The additional bit NodeInfo.IS_DTD_TYPE may be set to indicate a DTD-derived type.
    `locationId` - an integer which can be interpreted using a LocationMap to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Bit significant value. The following bits are defined:
  DISABLE_ESCAPING
    Disable escaping for this attribute
  NO_SPECIAL_CHARACTERS
    Attribute value contains no special characters
  Throws:
    `IllegalStateException:` - attempt to output an attribute when there is no open element start tag
    `XPathException`

### startContent

    public void startContent()
                      throws XPathException

  Notify the start of the content, that is, the completion of all attributes and namespaces. Note that the initial receiver of output from XSLT instructions will not receive this event, it has to detect it itself. Note that this event is reported for every element even if it has no attributes, no namespaces, and no content.

  Throws:
    `XPathException`

### endElement

    public void endElement()
                    throws XPathException

  Notify the end of an element. The receiver must maintain a stack if it needs to know which element is ending.

  Throws:
    `XPathException`

### characters

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

  Notify character data. Note that some receivers may require the character data to be sent in a single event, but in general this is not a requirement.

  Parameters:
    `chars` - The characters
    `locationId` - an integer which can be interpreted using a LocationMap to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Bit significant value. The following bits are defined:
  DISABLE_ESCAPING
    Disable escaping for this text node
  USE_CDATA
    Output as a CDATA section
  NO_SPECIAL_CHARACTERS
    Value contains no special characters
  WHITESPACE
    Text is all whitespace
  Throws:
    `XPathException`

### processingInstruction

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

  Output a processing instruction

  Parameters:
    `name` - The PI name. This must be a legal name (it will not be checked).
    `data` - The data portion of the processing instruction
    `locationId` - an integer which can be interpreted using a LocationMap to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Additional information about the PI. The following bits are defined:
  CHECKED
    Data is known to be legal (e.g. doesn't contain "?>")
  Throws:
    `IllegalArgumentException:` - the content is invalid for an XML processing instruction
    `XPathException`

### comment

    public void comment(java.lang.CharSequence content,
                        int locationId,
                        int properties)
                 throws XPathException

  Notify a comment. Comments are only notified if they are outside the DTD.

  Parameters:
    `content` - The content of the comment
    `locationId` - an integer which can be interpreted using a LocationMap to return information such as line number and system ID. If no location information is available, the value zero is supplied.
    `properties` - Additional information about the comment. The following bits are defined:
  CHECKED
    Comment is known to be legal (e.g. doesn't contain "--")
  Throws:
    `IllegalArgumentException:` - the content is invalid for an XML comment
    `XPathException`

### close

    public void close()
               throws XPathException

  Notify the end of the event stream

  Throws:
    `XPathException`

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