org.das2.qstream.StreamDescriptor

Description of the Stream, and manages resources for the stream.

StreamDescriptor( javax.xml.parsers.DocumentBuilderFactory factory )


addDescriptor

addDescriptor( org.das2.qstream.Descriptor pd ) → void

add the descriptor to the stream, manually assigning it an id

Parameters

pd - a Descriptor

Returns:

void (returns nothing)

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addDescriptor( org.das2.qstream.Descriptor pd, int descriptorId ) → void

descriptorId

descriptorId( org.das2.qstream.Descriptor pd ) → int

get the id for the descriptor. Note packetDescriptors contain the id, but this is not used.

Parameters

pd - the packet descriptor.

Returns:

the id

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getByteOrder

getByteOrder( ) → ByteOrder

Returns:

java.nio.ByteOrder

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getDomElement

getDomElement( ) → Element

Returns:

org.w3c.dom.Element

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hasDescriptor

hasDescriptor( org.das2.qstream.Descriptor pd0, int descriptorId ) → boolean

If a second PacketDescriptor contains the same descriptor information, then the PacketDescriptor can be dropped. This was introduced when two daily streams appended did not create a valid stream. It has the descriptor if: * the number is the same * the planes within are the same ids.

Parameters

pd0 - a Descriptor
descriptorId - an int

Returns:

a boolean

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isAsciiTypes

isAsciiTypes( ) → boolean

Returns:

boolean

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newDocument

newDocument( org.das2.qstream.Descriptor descriptor ) → Document

get the XML document that will contain the descriptor. Note that a QStream will have many XML documents, one for each descriptor. This keeps track of the documents for each descriptor.

Parameters

descriptor - the descriptor

Returns:

the Document, which will have elements added to it.

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retireDescriptor

retireDescriptor( org.das2.qstream.Descriptor pd ) → void

indicate that no more packets will be sent with this descriptor. This will free up the number so it can be reused.

Parameters

pd - the descriptor.

Returns:

void (returns nothing)

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send

send( org.das2.qstream.Descriptor pd, java.nio.channels.WritableByteChannel out ) → void

Parameters

pd - a Descriptor
out - a WritableByteChannel

Returns:

void (returns nothing)

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setAsciiTypes

setAsciiTypes( boolean asciiTypes ) → void

Parameters

asciiTypes - a boolean

Returns:

void (returns nothing)

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setByteOrder

setByteOrder( java.nio.ByteOrder byteOrder ) → void

Parameters

byteOrder - a ByteOrder

Returns:

void (returns nothing)

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setDomElement

setDomElement( org.w3c.dom.Element element ) → void

Parameters

element - an Element

Returns:

void (returns nothing)

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