Package org.postgresql.core.v3
Class CopyDualImpl
- java.lang.Object
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- org.postgresql.core.v3.CopyOperationImpl
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- org.postgresql.core.v3.CopyDualImpl
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- All Implemented Interfaces:
CopyDual
,CopyIn
,CopyOperation
,CopyOut
public class CopyDualImpl extends CopyOperationImpl implements CopyDual
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Constructor Summary
Constructors Constructor Description CopyDualImpl()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description long
endCopy()
Finishes copy operation successfully.void
flushCopy()
Force any buffered output to be sent over the network to the backend.void
handleCommandStatus(java.lang.String status)
protected void
handleCopydata(byte[] data)
Consume received copy data.byte[]
readFromCopy()
Blocks wait for a row of data to be received from server on an active copy operation.byte[]
readFromCopy(boolean block)
Wait for a row of data to be received from server on an active copy operation.void
writeToCopy(byte[] data, int off, int siz)
Writes specified part of given byte array to an open and writable copy operation.void
writeToCopy(ByteStreamWriter from)
Writes a ByteStreamWriter to an open and writable copy operation.-
Methods inherited from class org.postgresql.core.v3.CopyOperationImpl
cancelCopy, getFieldCount, getFieldFormat, getFormat, getHandledRowCount, getQueryExecutor, isActive
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.postgresql.copy.CopyOperation
cancelCopy, getFieldCount, getFieldFormat, getFormat, getHandledRowCount, isActive
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Method Detail
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writeToCopy
public void writeToCopy(byte[] data, int off, int siz) throws java.sql.SQLException
Description copied from interface:CopyIn
Writes specified part of given byte array to an open and writable copy operation.- Specified by:
writeToCopy
in interfaceCopyIn
- Parameters:
data
- array of bytes to writeoff
- offset of first byte to write (normally zero)siz
- number of bytes to write (normally buf.length)- Throws:
java.sql.SQLException
- if the operation fails
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writeToCopy
public void writeToCopy(ByteStreamWriter from) throws java.sql.SQLException
Description copied from interface:CopyIn
Writes a ByteStreamWriter to an open and writable copy operation.- Specified by:
writeToCopy
in interfaceCopyIn
- Parameters:
from
- the source of bytes, e.g. a ByteBufferByteStreamWriter- Throws:
java.sql.SQLException
- if the operation fails
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flushCopy
public void flushCopy() throws java.sql.SQLException
Description copied from interface:CopyIn
Force any buffered output to be sent over the network to the backend. In general this is a useless operation as it will get pushed over in due time or when endCopy is called. Some specific modified server versions (Truviso) want this data sooner. If you are unsure if you need to use this method, don't.
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endCopy
public long endCopy() throws java.sql.SQLException
Description copied from interface:CopyIn
Finishes copy operation successfully.
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readFromCopy
public byte[] readFromCopy() throws java.sql.SQLException
Description copied from interface:CopyOut
Blocks wait for a row of data to be received from server on an active copy operation.- Specified by:
readFromCopy
in interfaceCopyOut
- Returns:
- byte array received from server, null if server complete copy operation
- Throws:
java.sql.SQLException
- if something goes wrong for example socket timeout
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readFromCopy
public byte[] readFromCopy(boolean block) throws java.sql.SQLException
Description copied from interface:CopyOut
Wait for a row of data to be received from server on an active copy operation.- Specified by:
readFromCopy
in interfaceCopyOut
- Parameters:
block
-true
if need wait data from server otherwisefalse
and will read pending message from server- Returns:
- byte array received from server, if pending message from server absent and use no blocking mode return null
- Throws:
java.sql.SQLException
- if something goes wrong for example socket timeout
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handleCommandStatus
public void handleCommandStatus(java.lang.String status) throws PSQLException
- Overrides:
handleCommandStatus
in classCopyOperationImpl
- Throws:
PSQLException
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handleCopydata
protected void handleCopydata(byte[] data)
Description copied from class:CopyOperationImpl
Consume received copy data.- Specified by:
handleCopydata
in classCopyOperationImpl
- Parameters:
data
- data that was receive by copy protocol
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