org.apache.derby.iapi.jdbc
Class BrokeredConnection

java.lang.Object
  org.apache.derby.iapi.jdbc.BrokeredConnection

All Implemented Interfaces:

java.sql.Connection, java.sql.Wrapper, EngineConnection

Direct Known Subclasses:

BrokeredConnection30

public abstract class BrokeredConnection
extends java.lang.Object
implements EngineConnection

This is a rudimentary connection that delegates EVERYTHING to Connection.

Field Summary

private java.lang.String	connString
(package private) BrokeredConnectionControl	control
private boolean	isClosed
private boolean	stateAutoCommit
(package private) int	stateHoldability
private int	stateIsolationLevel Maintain state as seen by this Connection handle, not the state of the underlying Connection it is attached to.
private boolean	stateReadOnly

Fields inherited from interface java.sql.Connection

TRANSACTION_NONE, TRANSACTION_READ_COMMITTED, TRANSACTION_READ_UNCOMMITTED, TRANSACTION_REPEATABLE_READ, TRANSACTION_SERIALIZABLE

Constructor Summary

BrokeredConnection(BrokeredConnectionControl control)

Method Summary

void	addWarning(java.sql.SQLWarning w) Add a SQLWarning to this Connection object.
protected void	checkIfClosed() Checks if the connection is closed and throws an exception if it is.
void	clearLOBMapping() Clear the HashMap of all entries.
void	clearWarnings()
void	close()
void	commit()
java.sql.Statement	createStatement()
java.sql.Statement	createStatement(int resultSetType, int resultSetConcurrency)
boolean	getAutoCommit()
java.lang.String	getCatalog()
java.lang.String	getCurrentSchemaName() Obtain the name of the current schema.
int	getHoldability() Get the holdability for statements created by this connection when holdability is not passed in.
void	getIsolationUptoDate() Isolation level state in BrokeredConnection can get out of sync if the isolation is set using SQL rather than JDBC.
java.lang.Object	getLOBMapping(int key) Get the LOB reference corresponding to the locator.
java.sql.DatabaseMetaData	getMetaData()
int	getPrepareIsolation() get the isolation level that is currently being used to prepare statements (used for network server)
(package private) EngineConnection	getRealConnection() A little indirection for getting the real connection.
int	getTransactionIsolation()
java.util.Map	getTypeMap()
java.sql.SQLWarning	getWarnings()
boolean	isClosed()
boolean	isInGlobalTransaction() Is this a global transaction
boolean	isReadOnly()
java.lang.String	nativeSQL(java.lang.String sql)
BrokeredStatement	newBrokeredStatement(BrokeredStatementControl statementControl)
abstract BrokeredCallableStatement	newBrokeredStatement(BrokeredStatementControl statementControl, java.lang.String sql)
abstract BrokeredPreparedStatement	newBrokeredStatement(BrokeredStatementControl statementControl, java.lang.String sql, java.lang.Object generatedKeys)
(package private) void	notifyException(java.sql.SQLException sqle)
java.sql.CallableStatement	prepareCall(java.lang.String sql)
java.sql.CallableStatement	prepareCall(java.lang.String sql, int resultSetType, int resultSetConcurrency)
java.sql.PreparedStatement	prepareStatement(java.lang.String sql)
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency)
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) Prepare statement with explicit holdability.
void	resetFromPool() Resets the connection before it is returned from a PooledConnection to a new application request (wrapped by a BrokeredConnection).
void	rollback()
void	setAutoCommit(boolean autoCommit)
void	setCatalog(java.lang.String catalog)
void	setDrdaID(java.lang.String drdaID) set the DrdaId for this connection.
void	setPrepareIsolation(int level) Set the internal isolation level to use for preparing statements.
void	setReadOnly(boolean readOnly)
void	setState(boolean complete) Set the state of the underlying connection according to the state of this connection's view of state.
void	setTransactionIsolation(int level)
void	setTypeMap(java.util.Map map)
(package private) int	statementHoldabilityCheck(int resultSetHoldability) Check the result set holdability when creating a statement object.
void	syncState() Sync up the state of the underlying connection with the state of this new handle.
java.lang.String	toString() Get the string representation for this connection.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.sql.Connection

createArrayOf, createBlob, createClob, createNClob, createSQLXML, createStatement, createStruct, getClientInfo, getClientInfo, isValid, prepareCall, prepareStatement, prepareStatement, prepareStatement, releaseSavepoint, rollback, setClientInfo, setClientInfo, setHoldability, setSavepoint, setSavepoint

Methods inherited from interface java.sql.Wrapper

isWrapperFor, unwrap

Field Detail

stateHoldability

int stateHoldability

control

final BrokeredConnectionControl control

isClosed

private boolean isClosed

connString

private java.lang.String connString

stateIsolationLevel

private int stateIsolationLevel

Maintain state as seen by this Connection handle, not the state of the underlying Connection it is attached to.

stateReadOnly

private boolean stateReadOnly

stateAutoCommit

private boolean stateAutoCommit

Constructor Detail

BrokeredConnection

public BrokeredConnection(BrokeredConnectionControl control)

Method Detail

setAutoCommit

public final void setAutoCommit(boolean autoCommit)
                         throws java.sql.SQLException

Specified by:

setAutoCommit in interface java.sql.Connection

Throws:

java.sql.SQLException

getAutoCommit

public final boolean getAutoCommit()
                            throws java.sql.SQLException

Specified by:

getAutoCommit in interface java.sql.Connection

Throws:

java.sql.SQLException

createStatement

public final java.sql.Statement createStatement()
                                         throws java.sql.SQLException

Specified by:

createStatement in interface java.sql.Connection

Throws:

java.sql.SQLException

prepareStatement

public final java.sql.PreparedStatement prepareStatement(java.lang.String sql)
                                                  throws java.sql.SQLException

Specified by:

prepareStatement in interface java.sql.Connection

Throws:

java.sql.SQLException

prepareCall

public final java.sql.CallableStatement prepareCall(java.lang.String sql)
                                             throws java.sql.SQLException

Specified by:

prepareCall in interface java.sql.Connection

Throws:

java.sql.SQLException

nativeSQL

public final java.lang.String nativeSQL(java.lang.String sql)
                                 throws java.sql.SQLException

Specified by:

nativeSQL in interface java.sql.Connection

Throws:

java.sql.SQLException

commit

public final void commit()
                  throws java.sql.SQLException

Specified by:

commit in interface java.sql.Connection

Throws:

java.sql.SQLException

rollback

public final void rollback()
                    throws java.sql.SQLException

Specified by:

rollback in interface java.sql.Connection

Throws:

java.sql.SQLException

close

public final void close()
                 throws java.sql.SQLException

Specified by:

close in interface java.sql.Connection

Throws:

java.sql.SQLException

isClosed

public final boolean isClosed()
                       throws java.sql.SQLException

Specified by:

isClosed in interface java.sql.Connection

Throws:

java.sql.SQLException

getWarnings

public final java.sql.SQLWarning getWarnings()
                                      throws java.sql.SQLException

Specified by:

getWarnings in interface java.sql.Connection

Throws:

java.sql.SQLException

clearWarnings

public final void clearWarnings()
                         throws java.sql.SQLException

Specified by:

clearWarnings in interface java.sql.Connection

Throws:

java.sql.SQLException

getMetaData

public final java.sql.DatabaseMetaData getMetaData()
                                            throws java.sql.SQLException

Specified by:

getMetaData in interface java.sql.Connection

Throws:

java.sql.SQLException

setReadOnly

public final void setReadOnly(boolean readOnly)
                       throws java.sql.SQLException

Specified by:

setReadOnly in interface java.sql.Connection

Throws:

java.sql.SQLException

isReadOnly

public final boolean isReadOnly()
                         throws java.sql.SQLException

Specified by:

isReadOnly in interface java.sql.Connection

Throws:

java.sql.SQLException

setCatalog

public final void setCatalog(java.lang.String catalog)
                      throws java.sql.SQLException

Specified by:

setCatalog in interface java.sql.Connection

Throws:

java.sql.SQLException

getCatalog

public final java.lang.String getCatalog()
                                  throws java.sql.SQLException

Specified by:

getCatalog in interface java.sql.Connection

Throws:

java.sql.SQLException

setTransactionIsolation

public final void setTransactionIsolation(int level)
                                   throws java.sql.SQLException

Specified by:

setTransactionIsolation in interface java.sql.Connection

Throws:

java.sql.SQLException

getTransactionIsolation

public final int getTransactionIsolation()
                                  throws java.sql.SQLException

Specified by:

getTransactionIsolation in interface java.sql.Connection

Throws:

java.sql.SQLException

createStatement

public final java.sql.Statement createStatement(int resultSetType,
                                                int resultSetConcurrency)
                                         throws java.sql.SQLException

Specified by:

createStatement in interface java.sql.Connection

Throws:

java.sql.SQLException

prepareStatement

public final java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                         int resultSetType,
                                                         int resultSetConcurrency)
                                                  throws java.sql.SQLException

Specified by:

prepareStatement in interface java.sql.Connection

Throws:

java.sql.SQLException

prepareCall

public final java.sql.CallableStatement prepareCall(java.lang.String sql,
                                                    int resultSetType,
                                                    int resultSetConcurrency)
                                             throws java.sql.SQLException

Specified by:

prepareCall in interface java.sql.Connection

Throws:

java.sql.SQLException

getTypeMap

public java.util.Map getTypeMap()
                         throws java.sql.SQLException

Specified by:

getTypeMap in interface java.sql.Connection

Throws:

java.sql.SQLException

setTypeMap

public final void setTypeMap(java.util.Map map)
                      throws java.sql.SQLException

Specified by:

setTypeMap in interface java.sql.Connection

Throws:

java.sql.SQLException

getRealConnection

final EngineConnection getRealConnection()
                                  throws java.sql.SQLException

A little indirection for getting the real connection.

Returns:

the current connection

Throws:

java.sql.SQLException

notifyException

final void notifyException(java.sql.SQLException sqle)

syncState

public void syncState()
               throws java.sql.SQLException

Sync up the state of the underlying connection with the state of this new handle.

Throws:

java.sql.SQLException

getIsolationUptoDate

public void getIsolationUptoDate()
                          throws java.sql.SQLException

Isolation level state in BrokeredConnection can get out of sync if the isolation is set using SQL rather than JDBC. In order to ensure correct state level information, this method is called at the start and end of a global transaction.

Throws:

java.sql.SQLException

setState

public void setState(boolean complete)
              throws java.sql.SQLException

Set the state of the underlying connection according to the state of this connection's view of state.

Parameters:

complete - If true set the complete state of the underlying Connection, otherwise set only the Connection related state (ie. the non-transaction specific state).

Throws:

java.sql.SQLException

newBrokeredStatement

public BrokeredStatement newBrokeredStatement(BrokeredStatementControl statementControl)
                                       throws java.sql.SQLException

Throws:

java.sql.SQLException

newBrokeredStatement

public abstract BrokeredPreparedStatement newBrokeredStatement(BrokeredStatementControl statementControl,
                                                               java.lang.String sql,
                                                               java.lang.Object generatedKeys)
                                                        throws java.sql.SQLException

Throws:

java.sql.SQLException

newBrokeredStatement

public abstract BrokeredCallableStatement newBrokeredStatement(BrokeredStatementControl statementControl,
                                                               java.lang.String sql)
                                                        throws java.sql.SQLException

Throws:

java.sql.SQLException

setDrdaID

public final void setDrdaID(java.lang.String drdaID)

set the DrdaId for this connection. The drdaID prints with the statement text to the errror log

Specified by:

setDrdaID in interface EngineConnection

Parameters:

drdaID - drdaID to be used for this connection

isInGlobalTransaction

public boolean isInGlobalTransaction()

Description copied from interface: EngineConnection

Is this a global transaction

Specified by:

isInGlobalTransaction in interface EngineConnection

Returns:

true if this is a global XA transaction

See Also:

EngineConnection.isInGlobalTransaction()

setPrepareIsolation

public final void setPrepareIsolation(int level)
                               throws java.sql.SQLException

Set the internal isolation level to use for preparing statements. Subsequent prepares will use this isoalation level

Specified by:

setPrepareIsolation in interface EngineConnection

Parameters:

level - - internal isolation level

Throws:

java.sql.SQLException - See EmbedConnection#setPrepareIsolation

getPrepareIsolation

public final int getPrepareIsolation()
                              throws java.sql.SQLException

get the isolation level that is currently being used to prepare statements (used for network server)

Specified by:

getPrepareIsolation in interface EngineConnection

Returns:

current prepare isolation level See EmbedConnection#getPrepareIsolation

Throws:

java.sql.SQLException

addWarning

public final void addWarning(java.sql.SQLWarning w)
                      throws java.sql.SQLException

Add a SQLWarning to this Connection object.

Specified by:

addWarning in interface EngineConnection

Parameters:

w - Warning to be added, will be chained to any existing warnings.

Throws:

java.sql.SQLException

checkIfClosed

protected final void checkIfClosed()
                            throws java.sql.SQLException

Checks if the connection is closed and throws an exception if it is.

Throws:

java.sql.SQLException - if the connection is closed

toString

public java.lang.String toString()

Get the string representation for this connection. Return the class name/hash code and various debug information.

Overrides:

toString in class java.lang.Object

Returns:

unique string representation for this connection

prepareStatement

public final java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                         int resultSetType,
                                                         int resultSetConcurrency,
                                                         int resultSetHoldability)
                                                  throws java.sql.SQLException

Prepare statement with explicit holdability.

Specified by:

prepareStatement in interface java.sql.Connection

Throws:

java.sql.SQLException

getHoldability

public final int getHoldability()
                         throws java.sql.SQLException

Get the holdability for statements created by this connection when holdability is not passed in.

Specified by:

getHoldability in interface java.sql.Connection

Specified by:

getHoldability in interface EngineConnection

Throws:

java.sql.SQLException

statementHoldabilityCheck

final int statementHoldabilityCheck(int resultSetHoldability)
                             throws java.sql.SQLException

Check the result set holdability when creating a statement object. Section 16.1.3.1 of JDBC 4.0 (proposed final draft) says the driver may change the holdabilty and add a SQLWarning to the Connection object. This work-in-progress implementation throws an exception to match the old behaviour just as part of incremental development.

Throws:

java.sql.SQLException

clearLOBMapping

public void clearLOBMapping()
                     throws java.sql.SQLException

Clear the HashMap of all entries. Called when a commit or rollback of the transaction happens.

Specified by:

clearLOBMapping in interface EngineConnection

Throws:

java.sql.SQLException

getLOBMapping

public java.lang.Object getLOBMapping(int key)
                               throws java.sql.SQLException

Get the LOB reference corresponding to the locator.

Specified by:

getLOBMapping in interface EngineConnection

Parameters:

key - the integer that represents the LOB locator value.

Returns:

the LOB Object corresponding to this locator.

Throws:

java.sql.SQLException

getCurrentSchemaName

public java.lang.String getCurrentSchemaName()
                                      throws java.sql.SQLException

Obtain the name of the current schema. Not part of the java.sql.Connection interface, but is accessible through the EngineConnection interface, so that the NetworkServer can get at the current schema for piggy-backing

Specified by:

getCurrentSchemaName in interface EngineConnection

Returns:

the current schema name

Throws:

java.sql.SQLException

resetFromPool

public void resetFromPool()
                   throws java.sql.SQLException

Description copied from interface: EngineConnection

Resets the connection before it is returned from a PooledConnection to a new application request (wrapped by a BrokeredConnection).

Note that resetting the transaction isolation level is not performed as part of this method. Temporary tables, IDENTITY_VAL_LOCAL and current schema are reset.

Specified by:

resetFromPool in interface EngineConnection

Throws:

java.sql.SQLException

See Also:

EngineConnection