Package com.pixelmed.network
Class AssociationOutputStream
- java.lang.Object
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- java.io.OutputStream
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- com.pixelmed.network.AssociationOutputStream
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- All Implemented Interfaces:
java.io.Closeable
,java.io.Flushable
,java.lang.AutoCloseable
public class AssociationOutputStream extends java.io.OutputStream
A specialized java.io.OutputStream which buffers and fragments data which is written to it into PDUs and sends them over the supplied OutputStream which is (presumably) that of the java.net.Socket of an established
Association
.This stream buffers data that is written to it and when it is either flushed or closed or reaches the specified maximum PDU size, writes data (not command) PDU's to the supplied output stream.
Need to take care with "last fragment" flag ... that cannot be set until close() is called, and if the buffer is empty at that time, a zero length PDU will be sent.
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Constructor Summary
Constructors Constructor Description AssociationOutputStream(java.io.OutputStream out, int maxPDUSize, int presentationContextID)
Construct a PDU buffering OutputStream on top of another OutputStreamAssociationOutputStream(java.io.OutputStream out, int maxPDUSize, int presentationContextID, int debugLevel)
Construct a PDU buffering OutputStream on top of another OutputStream
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Sets the last fragment flag and flushes (which sends a zero length PDU if necessary, and pads to an even length, if necessary).void
flush()
Do nothing.void
write(byte[] b)
Buffer the supplied data, flushing (actually sending) PDUs when the buffer is filled.void
write(byte[] b, int off, int len)
Buffer the supplied data, flushing (actually sending) PDUs when the buffer is filled.void
write(int i)
Buffer the supplied data, flushing (actually sending) PDUs when the buffer is filled.
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Constructor Detail
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AssociationOutputStream
public AssociationOutputStream(java.io.OutputStream out, int maxPDUSize, int presentationContextID, int debugLevel) throws DicomNetworkException
Construct a PDU buffering OutputStream on top of another OutputStream- Parameters:
out
- where to send the buffered outputmaxPDUSize
- how large to make the buffer (i.e. the PDU) sizepresentationContextID
- included in the header of each PDUdebugLevel
- ignored- Throws:
DicomNetworkException
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AssociationOutputStream
public AssociationOutputStream(java.io.OutputStream out, int maxPDUSize, int presentationContextID) throws DicomNetworkException
Construct a PDU buffering OutputStream on top of another OutputStream- Parameters:
out
- where to send the buffered outputmaxPDUSize
- how large to make the buffer (i.e. the PDU) sizepresentationContextID
- included in the header of each PDU- Throws:
DicomNetworkException
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Method Detail
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write
public void write(int i) throws java.io.IOException
Buffer the supplied data, flushing (actually sending) PDUs when the buffer is filled.- Specified by:
write
in classjava.io.OutputStream
- Parameters:
i
-- Throws:
java.io.IOException
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write
public void write(byte[] b) throws java.io.IOException
Buffer the supplied data, flushing (actually sending) PDUs when the buffer is filled.- Overrides:
write
in classjava.io.OutputStream
- Parameters:
b
-- Throws:
java.io.IOException
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write
public void write(byte[] b, int off, int len) throws java.io.IOException
Buffer the supplied data, flushing (actually sending) PDUs when the buffer is filled.- Overrides:
write
in classjava.io.OutputStream
- Parameters:
b
-off
-len
-- Throws:
java.io.IOException
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close
public void close() throws java.io.IOException
Sets the last fragment flag and flushes (which sends a zero length PDU if necessary, and pads to an even length, if necessary). Does NOT actually close the underlying stream, since that may well be used for other operations later.- Specified by:
close
in interfacejava.lang.AutoCloseable
- Specified by:
close
in interfacejava.io.Closeable
- Overrides:
close
in classjava.io.OutputStream
- Throws:
java.io.IOException
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flush
public void flush() throws java.io.IOException
Do nothing.- Specified by:
flush
in interfacejava.io.Flushable
- Overrides:
flush
in classjava.io.OutputStream
- Throws:
java.io.IOException
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