Package | Description |
---|---|
org.postgresql.copy | |
org.postgresql.core.v3 |
Modifier and Type | Interface | Description |
---|---|---|
interface |
CopyDual |
Bidirectional via copy stream protocol.
|
Modifier and Type | Class | Description |
---|---|---|
class |
PGCopyOutputStream |
OutputStream for buffered input into a PostgreSQL COPY FROM STDIN operation
|
Modifier and Type | Method | Description |
---|---|---|
CopyIn |
CopyManager.copyIn(java.lang.String sql) |
Constructor | Description |
---|---|
PGCopyOutputStream(CopyIn op) |
Use given CopyIn operation for writing
|
PGCopyOutputStream(CopyIn op,
int bufferSize) |
Use given CopyIn operation for writing
|
Modifier and Type | Class | Description |
---|---|---|
class |
CopyDualImpl |
|
class |
CopyInImpl |
Anticipated flow of a COPY FROM STDIN operation:
CopyManager.copyIn() ->QueryExecutor.startCopy() - sends given query to server
->processCopyResults(): - receives CopyInResponse from Server - creates new CopyInImpl
->initCopy(): - receives copy metadata from server ->CopyInImpl.init() ->lock()
connection for this operation - if query fails an exception is thrown - if query returns wrong
CopyOperation, copyIn() cancels it before throwing exception <-return: new CopyInImpl holding
lock on connection repeat CopyIn.writeToCopy() for all data ->CopyInImpl.writeToCopy()
->QueryExecutorImpl.writeToCopy() - sends given data ->processCopyResults() - parameterized
not to block, just peek for new messages from server - on ErrorResponse, waits until protocol is
restored and unlocks connection CopyIn.endCopy() ->CopyInImpl.endCopy()
->QueryExecutorImpl.endCopy() - sends CopyDone - processCopyResults() - on CommandComplete
->CopyOperationImpl.handleCommandComplete() - sets updatedRowCount when applicable - on
ReadyForQuery unlock() connection for use by other operations <-return:
CopyInImpl.getUpdatedRowCount()
|
Copyright © 2018 PostgreSQL Global Development Group. All rights reserved.