Class PayloadStreamReaderMessage
- java.lang.Object
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- com.sun.xml.ws.api.message.Message
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- com.sun.xml.ws.message.AbstractMessageImpl
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- com.sun.xml.ws.message.stream.PayloadStreamReaderMessage
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- Direct Known Subclasses:
PayloadSourceMessage
public class PayloadStreamReaderMessage extends AbstractMessageImpl
Message
backed byXMLStreamReader
as payload- Author:
- Jitendra Kotamraju
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Field Summary
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Fields inherited from class com.sun.xml.ws.message.AbstractMessageImpl
bodyTag, DEFAULT_TAGS, EMPTY_ATTS, envelopeTag, headerTag, NULL_LOCATOR, soapVersion
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Fields inherited from class com.sun.xml.ws.api.message.Message
attachmentSet
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Constructor Summary
Constructors Constructor Description PayloadStreamReaderMessage(MessageHeaders headers, XMLStreamReader reader, AttachmentSet attSet, SOAPVersion soapVersion)
PayloadStreamReaderMessage(XMLStreamReader reader, SOAPVersion soapVer)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Message
copy()
Creates a copy of aMessage
.AttachmentSet
getAttachments()
Gets the attachments of this message (attachments live outside a message.)MessageHeaders
getHeaders()
Gets all the headers of this message.String
getPayloadLocalPart()
Gets the local name of the payload element.String
getPayloadNamespaceURI()
Gets the namespace URI of the payload element.boolean
hasHeaders()
Returns true if headers are present in the message.boolean
hasPayload()
Returns true if aMessage
has a payload.XMLStreamReader
readPayload()
Reads the payload as aXMLStreamReader
This consumes the message.<T> T
readPayloadAsJAXB(jakarta.xml.bind.Unmarshaller unmarshaller)
Reads the payload as a JAXB object by using the given unmarshaller.Source
readPayloadAsSource()
Returns the payload as aSource
object.void
writePayloadTo(XMLStreamWriter sw)
Writes the payload to StAX.protected void
writePayloadTo(ContentHandler contentHandler, ErrorHandler errorHandler, boolean fragment)
Writes the payload to SAX events.void
writeTo(ContentHandler contentHandler, ErrorHandler errorHandler)
Writes the whole envelope as SAX events.-
Methods inherited from class com.sun.xml.ws.message.AbstractMessageImpl
getSOAPVersion, readAsSOAPMessage, readAsSOAPMessage, readEnvelopeAsSource, readPayloadAsJAXB, readPayloadAsJAXB, toSAAJ, writeTo, writeToBodyStart
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Methods inherited from class com.sun.xml.ws.api.message.Message
addSOAPMimeHeaders, assertOneWay, consume, copyFrom, generateMessageID, getFirstDetailEntryName, getID, getID, getMethod, getOperation, getOperation, getTransportHeaders, getTransportHeaders, hasAttachments, isFault, isOneWay, setMessageMedadata
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Constructor Detail
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PayloadStreamReaderMessage
public PayloadStreamReaderMessage(XMLStreamReader reader, SOAPVersion soapVer)
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PayloadStreamReaderMessage
public PayloadStreamReaderMessage(@Nullable MessageHeaders headers, @NotNull XMLStreamReader reader, @NotNull AttachmentSet attSet, @NotNull SOAPVersion soapVersion)
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Method Detail
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hasHeaders
public boolean hasHeaders()
Description copied from class:Message
Returns true if headers are present in the message.- Specified by:
hasHeaders
in classMessage
- Returns:
- true if headers are present.
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getAttachments
public AttachmentSet getAttachments()
Description copied from class:Message
Gets the attachments of this message (attachments live outside a message.)- Overrides:
getAttachments
in classMessage
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getPayloadLocalPart
public String getPayloadLocalPart()
Description copied from class:Message
Gets the local name of the payload element.- Specified by:
getPayloadLocalPart
in classMessage
- Returns:
- null if a
Message
doesn't have any payload.
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getPayloadNamespaceURI
public String getPayloadNamespaceURI()
Description copied from class:Message
Gets the namespace URI of the payload element.- Specified by:
getPayloadNamespaceURI
in classMessage
- Returns:
- null if a
Message
doesn't have any payload.
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hasPayload
public boolean hasPayload()
Description copied from class:Message
Returns true if aMessage
has a payload.A message without a payload is a SOAP message that looks like:
<S:Envelope> <S:Header> ... </S:Header> <S:Body /> </S:Envelope>
- Specified by:
hasPayload
in classMessage
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readPayloadAsSource
public Source readPayloadAsSource()
Description copied from class:Message
Returns the payload as aSource
object. This consumes the message.- Specified by:
readPayloadAsSource
in classMessage
- Returns:
- if there's no payload, this method returns null.
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readPayload
public XMLStreamReader readPayload() throws XMLStreamException
Description copied from class:Message
Reads the payload as aXMLStreamReader
This consumes the message. The caller is encouraged to callXMLStreamReaderFactory.recycle(XMLStreamReader)
when finished using the instance.- Specified by:
readPayload
in classMessage
- Returns:
- If there's no payload, this method returns null.
Otherwise always non-null valid
XMLStreamReader
that points to the payload tag name. - Throws:
XMLStreamException
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writePayloadTo
public void writePayloadTo(XMLStreamWriter sw) throws XMLStreamException
Description copied from class:Message
Writes the payload to StAX. This method writes just the payload of the message to the writer. This consumes the message. The implementation will not writeXMLStreamWriter.writeStartDocument()
norXMLStreamWriter.writeEndDocument()
If there's no payload, this method is no-op.
- Specified by:
writePayloadTo
in classMessage
- Throws:
XMLStreamException
- If theXMLStreamWriter
reports an error, or some other errors happen during the processing.
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readPayloadAsJAXB
public <T> T readPayloadAsJAXB(jakarta.xml.bind.Unmarshaller unmarshaller) throws jakarta.xml.bind.JAXBException
Description copied from class:Message
Reads the payload as a JAXB object by using the given unmarshaller. This consumes the message.- Overrides:
readPayloadAsJAXB
in classAbstractMessageImpl
- Throws:
jakarta.xml.bind.JAXBException
- If JAXB reports an error during the processing.
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writeTo
public void writeTo(ContentHandler contentHandler, ErrorHandler errorHandler) throws SAXException
Description copied from class:AbstractMessageImpl
Writes the whole envelope as SAX events.- Overrides:
writeTo
in classAbstractMessageImpl
- Parameters:
contentHandler
- must not be nulll.errorHandler
- must not be null. any error encountered during the SAX event production must be first reported to this error handler. Fatal errors can be then thrown asSAXParseException
.SAXException
s thrown fromErrorHandler
should propagate directly through this method.- Throws:
SAXException
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writePayloadTo
protected void writePayloadTo(ContentHandler contentHandler, ErrorHandler errorHandler, boolean fragment) throws SAXException
Description copied from class:AbstractMessageImpl
Writes the payload to SAX events.- Specified by:
writePayloadTo
in classAbstractMessageImpl
fragment
- if true, this method will fire SAX events without start/endDocument events, suitable for embedding this into a bigger SAX event sequence. if false, this method generaets a completely SAX event sequence on its own.- Throws:
SAXException
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copy
public Message copy()
Description copied from class:Message
Creates a copy of aMessage
.This method creates a new
Message
whose header/payload/attachments/properties are identical to thisMessage
. Once created, the createdMessage
and the originalMessage
behaves independently --- adding header/ attachment to oneMessage
doesn't affect anotherMessage
at all.This method does NOT consume a message.
To enable efficient copy operations, there's a few restrictions on how copied message can be used.
- The original and the copy may not be
used concurrently by two threads (this allows two
Message
s to share some internal resources, such as JAXB marshallers.) Note that it's OK for the original and the copy to be processed by two threads, as long as they are not concurrent. - The copy has the same 'life scope'
as the original (this allows shallower copy, such as
JAXB beans wrapped in
JAXBMessage
.)
A 'life scope' of a message created during a message processing in a pipeline is until a pipeline processes the next message. A message cannot be kept beyond its life scope. (This experimental design is to allow message objects to be reused --- feedback appreciated.)
Design Rationale
Since a
Message
body is read-once, sometimes (such as when you do fail-over, or WS-RM) you need to create an idential copy of aMessage
.The actual copy operation depends on the layout of the data in memory, hence it's best to be done by the
Message
implementation itself.The restrictions placed on the use of copied
Message
can be relaxed if necessary, but it will make the copy method more expensive.IMPORTANT
WHEN YOU IMPLEMENT OR CHANGE A {@link .copy()} METHOD, YOU MUST USE THE
Message.copyFrom(com.sun.xml.ws.api.message.Message)
METHOD IN THE IMPLEMENTATION. - The original and the copy may not be
used concurrently by two threads (this allows two
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getHeaders
@NotNull public MessageHeaders getHeaders()
Description copied from class:Message
Gets all the headers of this message.Implementation Note
Message
implementation is allowed to defer the construction ofMessageHeaders
object. So if you only want to check for the existence of any header element, useMessage.hasHeaders()
.- Specified by:
getHeaders
in classMessage
- Returns:
- always return the same non-null object.
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