Package org.postgresql.core.v3

Class Summary

Class	Description
BatchedQuery	Purpose of this object is to support batched query re write behaviour.
ConnectionFactoryImpl	ConnectionFactory implementation for version 3 (7.4+) connections.
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()
CopyOperationImpl
CopyOutImpl	Anticipated flow of a COPY TO STDOUT operation: CopyManager.copyOut() ->QueryExecutor.startCopy() - sends given query to server ->processCopyResults(): - receives CopyOutResponse from Server - creates new CopyOutImpl ->initCopy(): - receives copy metadata from server ->CopyOutImpl.init() ->lock() connection for this operation - if query fails an exception is thrown - if query returns wrong CopyOperation, copyOut() cancels it before throwing exception <-returned: new CopyOutImpl holding lock on connection repeat CopyOut.readFromCopy() until null ->CopyOutImpl.readFromCopy() ->QueryExecutorImpl.readFromCopy() ->processCopyResults() - on copydata row from server ->CopyOutImpl.handleCopydata() stores reference to byte array - on CopyDone, CommandComplete, ReadyForQuery ->unlock() connection for use by other operations <-returned: byte array of data received from server or null at end.
QueryExecutorImpl	QueryExecutor implementation for the V3 protocol.