Module io.helidon.integrations.jdbc

Package io.helidon.integrations.jdbc

Class ConditionallyCloseableConnection

java.lang.Object

io.helidon.integrations.jdbc.DelegatingConnection

io.helidon.integrations.jdbc.ConditionallyCloseableConnection

All Implemented Interfaces:

AutoCloseable, Connection, Wrapper

public class ConditionallyCloseableConnection
extends DelegatingConnection

A JDBC 4.3-compliant DelegatingConnection whose close() method may or may not close it depending on other partial state.

Thread Safety

Instances of this class are not necessarily safe for concurrent use by multiple threads because their Connection delegates may not be. JDBC 4.3 does not require thread safety from any JDBC construct.

See Also:

• isClosed()
• isCloseable()
• setCloseable(boolean)
• close()
• isClosePending()
• ConditionallyCloseableConnection(Connection, boolean, boolean)

Field Summary

Fields inherited from interface java.sql.Connection

TRANSACTION_NONE, TRANSACTION_READ_COMMITTED, TRANSACTION_READ_UNCOMMITTED, TRANSACTION_REPEATABLE_READ, TRANSACTION_SERIALIZABLE

Constructor Summary

Constructors

Constructor	Description
ConditionallyCloseableConnection(Connection delegate)	Deprecated. This constructor continues to exist for backwards compatibility only and its use is strongly discouraged.
ConditionallyCloseableConnection(Connection delegate, boolean closeable)	Deprecated. This constructor continues to exist for backwards compatibility only and its use is strongly discouraged.
ConditionallyCloseableConnection(Connection delegate, boolean closeable, boolean strictClosedChecking)	Creates a new ConditionallyCloseableConnection.

Method Summary

Modifier and Type	Method	Description
void	abort(Executor executor)
void	beginRequest()
void	clearWarnings()
void	close()	Overrides the DelegatingConnection.close() method so that when it is invoked this ConditionallyCloseableConnection is closed only if it is closeable.
void	commit()
Array	createArrayOf(String typeName, Object[] elements)
Blob	createBlob()
Clob	createClob()
NClob	createNClob()
SQLXML	createSQLXML()
Statement	createStatement()
Statement	createStatement(int resultSetType, int resultSetConcurrency)
Statement	createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
Struct	createStruct(String typeName, Object[] attributes)
void	endRequest()
protected final void	failWhenClosed()	Invokes the isClosed() method, and, if it returns true, throws a new SQLException indicating that because the connection is closed the operation cannot proceed.
boolean	getAutoCommit()
String	getCatalog()
Properties	getClientInfo()
String	getClientInfo(String name)
int	getHoldability()
DatabaseMetaData	getMetaData()
int	getNetworkTimeout()
String	getSchema()
int	getTransactionIsolation()
Map<String,Class<?>>	getTypeMap()
SQLWarning	getWarnings()
boolean	isCloseable()	Returns true if a call to close() will actually close this ConditionallyCloseableConnection.
boolean	isClosed()	Returns true if and only if this ConditionallyCloseableConnection either is, or is to be considered to be, closed, such that operations which must throw a SQLException when invoked on a closed connection will do so.
boolean	isClosePending()	Returns true if and only if this ConditionallyCloseableConnection is behaving as if the close() method has been invoked while this ConditionallyCloseableConnection was not closeable.
boolean	isReadOnly()
boolean	isValid(int timeout)
boolean	isWrapperFor(Class<?> iface)
String	nativeSQL(String sql)
protected void	onClose()	Called by the close() method to perform work after an actual close operation has completed.
CallableStatement	prepareCall(String sql)
CallableStatement	prepareCall(String sql, int resultSetType, int resultSetConcurrency)
CallableStatement	prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
PreparedStatement	prepareStatement(String sql)
PreparedStatement	prepareStatement(String sql, int autoGeneratedKeys)
PreparedStatement	prepareStatement(String sql, int[] columnIndexes)
PreparedStatement	prepareStatement(String sql, int resultSetType, int resultSetConcurrency)
PreparedStatement	prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
PreparedStatement	prepareStatement(String sql, String[] columnNames)
void	releaseSavepoint(Savepoint savepoint)
void	rollback()
void	rollback(Savepoint savepoint)
void	setAutoCommit(boolean autoCommit)
void	setCatalog(String catalog)
void	setClientInfo(String name, String value)
void	setClientInfo(Properties properties)
void	setCloseable(boolean closeable)	Sets the closeable status of this ConditionallyCloseableConnection and, if the supplied closeable agrument is true, sets the close pending status to false.
void	setHoldability(int holdability)
void	setNetworkTimeout(Executor executor, int milliseconds)
void	setReadOnly(boolean readOnly)
Savepoint	setSavepoint()
Savepoint	setSavepoint(String name)
void	setSchema(String schema)
void	setShardingKey(ShardingKey shardingKey)
void	setShardingKey(ShardingKey shardingKey, ShardingKey superShardingKey)
boolean	setShardingKeyIfValid(ShardingKey shardingKey, int timeout)
boolean	setShardingKeyIfValid(ShardingKey shardingKey, ShardingKey superShardingKey, int timeout)
void	setTransactionIsolation(int level)
void	setTypeMap(Map<String,Class<?>> map)
<T> T	unwrap(Class<T> iface)

Methods inherited from class io.helidon.integrations.jdbc.DelegatingConnection

delegate

Methods inherited from class java.lang.Object

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

Constructor Details

ConditionallyCloseableConnection

@Deprecated(since="3.0.3")
public ConditionallyCloseableConnection(Connection delegate)

Deprecated.

This constructor continues to exist for backwards compatibility only and its use is strongly discouraged. Please use the ConditionallyCloseableConnection(Connection, boolean, boolean) constructor instead and consider supplying true for its strictClosedChecking parameter. In the future, this constructor may change, without prior notice, to cause new ConditionallyCloseableConnection instances created by it to behave as if they were created by invocations of the ConditionallyCloseableConnection(Connection, boolean, boolean) constructor instead, with true supplied for its strictClosedChecking parameter.

Creates a new ConditionallyCloseableConnection and sets its closeable status to true.

Parameters:

delegate - the Connection to wrap; must not be null

Throws:

NullPointerException - if delegate is null

See Also:

• ConditionallyCloseableConnection(Connection, boolean, boolean)

ConditionallyCloseableConnection

@Deprecated(since="3.0.3")
public ConditionallyCloseableConnection(Connection delegate,
 boolean closeable)

Deprecated.

This constructor continues to exist for backwards compatibility only and its use is strongly discouraged. Please use the ConditionallyCloseableConnection(Connection, boolean, boolean) constructor instead and consider supplying true for its strictClosedChecking parameter. In the future, this constructor may change, without prior notice, to cause new ConditionallyCloseableConnection instances created by it to behave as if they were created by invocations of the ConditionallyCloseableConnection(Connection, boolean, boolean) constructor instead, with true supplied for its strictClosedChecking parameter.

Creates a new ConditionallyCloseableConnection.

Parameters:

delegate - the Connection to wrap; must not be null

closeable - the initial value for this ConditionallyCloseableConnection's closeable status

Throws:

NullPointerException - if delegate is null

See Also:

• ConditionallyCloseableConnection(java.sql.Connection,boolean,boolean)

ConditionallyCloseableConnection

public ConditionallyCloseableConnection(Connection delegate,
 boolean closeable,
 boolean strictClosedChecking)

Creates a new ConditionallyCloseableConnection.

Parameters:

delegate - the Connection to wrap; must not be null

closeable - the initial value for this ConditionallyCloseableConnection's closeable status

strictClosedChecking - if true, then this ConditionallyCloseableConnection's isClosed() method will be invoked before every operation that cannot take place on a closed connection, and, if it returns true, the operation in question will fail with a SQLException; it is strongly recommended to supply true as the argument for this parameter (false is permitted for backwards compatibility reasons only)

Throws:

NullPointerException - if delegate is null

See Also:

• isCloseable()
• setCloseable(boolean)
• close()
• isClosed()
• isClosePending()
• DelegatingConnection(Connection)

Method Details

close

public void close()
           throws SQLException

Overrides the DelegatingConnection.close() method so that when it is invoked this ConditionallyCloseableConnection is closed only if it is closeable.

Subclasses that override this method must not directly or indirectly call failWhenClosed() or undefined behavior may result.

If strictClosedChecking was true at construction time (strongly recommended), then the following pre- and post-conditions apply:

If isCloseable() returns true at the point of an invocation of this method, then after this method completes, successfully or not, isClosePending() will return false.

If isCloseable() returns false at the point of an invocation of this method, then after this method completes, successfully or not, isClosePending() will return true.

Overrides should normally call super.close() as part of their implementation.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Connection

Overrides:

close in class DelegatingConnection

Throws:

SQLException - if an error occurs

See Also:

• isClosed()
• isCloseable()
• setCloseable(boolean)
• isClosePending()

onClose

protected void onClose()
                throws SQLException

Called by the close() method to perform work after an actual close operation has completed.

During an invocation of this method by the close() method:

• The isClosed() method will return true.
• The isCloseable() method will return false.
• The isClosePending() method will return false.

The default implementation of this method does nothing.

Invoking this method directly may result in undefined behavior, depending on how it is overridden.

Overrides of this method must not call close() or undefined behavior, such as an infinite loop, may result.

Overrides of this method must be idempotent.

Throws:

SQLException - if a database error occurs

See Also:

• isClosed()
• isCloseable()
• setCloseable(boolean)
• isClosePending()
• close()

isCloseable

public boolean isCloseable()
                    throws SQLException

Returns true if a call to close() will actually close this ConditionallyCloseableConnection.

This method returns true when setCloseable(boolean) has been called with a value of true and the isClosed() method returns false.

Subclasses that override this method must not directly or indirectly call failWhenClosed() or undefined behavior may result.

Returns:

true if a call to close() will actually close this ConditionallyCloseableConnection; false in all other cases

Throws:

SQLException - if isClosed() throws a SQLException

See Also:

• isClosed()
• setCloseable(boolean)
• close()
• isClosePending()

setCloseable

public void setCloseable(boolean closeable)

Sets the closeable status of this ConditionallyCloseableConnection and, if the supplied closeable agrument is true, sets the close pending status to false.

Subclasses that override this method must not directly or indirectly call failWhenClosed() or undefined behavior may result.

Note that calling this method with a value of true does not necessarily mean that the isCloseable() method will subsequently return true, since the isClosed() method may return true.

Design Note

This method does not throw SQLException only because of an oversight in the design of the original version of this class. Callers should consider catching UncheckedSQLException where appropriate instead. The default implementation of this method does not throw any exceptions of any kind.

Parameters:

closeable - whether or not a call to close() will actually close this ConditionallyCloseableConnection

See Also:

• isClosed()
• isCloseable()
• close()
• isClosePending()
• Connection.close()

isClosePending

public boolean isClosePending()

Returns true if and only if this ConditionallyCloseableConnection is behaving as if the close() method has been invoked while this ConditionallyCloseableConnection was not closeable.

Subclasses that override this method must not directly or indirectly call failWhenClosed() or undefined behavior may result.

Subclasses that override this method must not directly or indirectly mutate the state of this ConditionallyCloseableConnection or undefined behavior may result.

Returns:

true if and only if a close operation is pending

See Also:

• isClosed()
• isCloseable()
• setCloseable(boolean)
• close()

createStatement

public Statement createStatement()
                          throws SQLException

Specified by:

createStatement in interface Connection

Overrides:

createStatement in class DelegatingConnection

Throws:

SQLException

prepareStatement

public PreparedStatement prepareStatement(String sql)
                                   throws SQLException

Specified by:

prepareStatement in interface Connection

Overrides:

prepareStatement in class DelegatingConnection

Throws:

SQLException

prepareCall

public CallableStatement prepareCall(String sql)
                              throws SQLException

Specified by:

prepareCall in interface Connection

Overrides:

prepareCall in class DelegatingConnection

Throws:

SQLException

nativeSQL

public String nativeSQL(String sql)
                 throws SQLException

Specified by:

nativeSQL in interface Connection

Overrides:

nativeSQL in class DelegatingConnection

Throws:

SQLException

setAutoCommit

public void setAutoCommit(boolean autoCommit)
                   throws SQLException

Specified by:

setAutoCommit in interface Connection

Overrides:

setAutoCommit in class DelegatingConnection

Throws:

SQLException

getAutoCommit

public boolean getAutoCommit()
                      throws SQLException

Specified by:

getAutoCommit in interface Connection

Overrides:

getAutoCommit in class DelegatingConnection

Throws:

SQLException

commit

public void commit()
            throws SQLException

Specified by:

commit in interface Connection

Overrides:

commit in class DelegatingConnection

Throws:

SQLException

rollback

public void rollback()
              throws SQLException

Specified by:

rollback in interface Connection

Overrides:

rollback in class DelegatingConnection

Throws:

SQLException

isClosed

public boolean isClosed()
                 throws SQLException

Returns true if and only if this ConditionallyCloseableConnection either is, or is to be considered to be, closed, such that operations which must throw a SQLException when invoked on a closed connection will do so.

If true was supplied for the strictClosedChecking parameter at construction time (strongly recommended), the default implementation of this method returns a value as if produced by the following implementation: this.isClosePending() || super.isClosed().

If false was supplied for the strictClosedChecking parameter at construction time (not recommended), the default implementation of this method returns a value as if produced by the following implementation: super.isClosed().

Subclasses that override this method must not directly or indirectly call failWhenClosed() or undefined behavior may result.

Specified by:

isClosed in interface Connection

Overrides:

isClosed in class DelegatingConnection

Returns:

true if and only if this ConditionallyCloseableConnection either is, or is to be considered to be, closed

Throws:

SQLException - if a database access error occurs

See Also:

• isCloseable()
• setCloseable(boolean)
• close()
• isClosePending()

getMetaData

public DatabaseMetaData getMetaData()
                             throws SQLException

Specified by:

getMetaData in interface Connection

Overrides:

getMetaData in class DelegatingConnection

Throws:

SQLException

setReadOnly

public void setReadOnly(boolean readOnly)
                 throws SQLException

Specified by:

setReadOnly in interface Connection

Overrides:

setReadOnly in class DelegatingConnection

Throws:

SQLException

isReadOnly

public boolean isReadOnly()
                   throws SQLException

Specified by:

isReadOnly in interface Connection

Overrides:

isReadOnly in class DelegatingConnection

Throws:

SQLException

setCatalog

public void setCatalog(String catalog)
                throws SQLException

Specified by:

setCatalog in interface Connection

Overrides:

setCatalog in class DelegatingConnection

Throws:

SQLException

getCatalog

public String getCatalog()
                  throws SQLException

Specified by:

getCatalog in interface Connection

Overrides:

getCatalog in class DelegatingConnection

Throws:

SQLException

setTransactionIsolation

public void setTransactionIsolation(int level)
                             throws SQLException

Specified by:

setTransactionIsolation in interface Connection

Overrides:

setTransactionIsolation in class DelegatingConnection

Throws:

SQLException

getTransactionIsolation

public int getTransactionIsolation()
                            throws SQLException

Specified by:

getTransactionIsolation in interface Connection

Overrides:

getTransactionIsolation in class DelegatingConnection

Throws:

SQLException

getWarnings

public SQLWarning getWarnings()
                       throws SQLException

Specified by:

getWarnings in interface Connection

Overrides:

getWarnings in class DelegatingConnection

Throws:

SQLException

clearWarnings

public void clearWarnings()
                   throws SQLException

Specified by:

clearWarnings in interface Connection

Overrides:

clearWarnings in class DelegatingConnection

Throws:

SQLException

createStatement

public Statement createStatement(int resultSetType,
 int resultSetConcurrency)
                          throws SQLException

Specified by:

createStatement in interface Connection

Overrides:

createStatement in class DelegatingConnection

Throws:

SQLException

prepareStatement

public PreparedStatement prepareStatement(String sql,
 int resultSetType,
 int resultSetConcurrency)
                                   throws SQLException

Specified by:

prepareStatement in interface Connection

Overrides:

prepareStatement in class DelegatingConnection

Throws:

SQLException

prepareCall

public CallableStatement prepareCall(String sql,
 int resultSetType,
 int resultSetConcurrency)
                              throws SQLException

Specified by:

prepareCall in interface Connection

Overrides:

prepareCall in class DelegatingConnection

Throws:

SQLException

getTypeMap

public Map<String,Class<?>> getTypeMap()
                                throws SQLException

Specified by:

getTypeMap in interface Connection

Overrides:

getTypeMap in class DelegatingConnection

Throws:

SQLException

setTypeMap

public void setTypeMap(Map<String,Class<?>> map)
                throws SQLException

Specified by:

setTypeMap in interface Connection

Overrides:

setTypeMap in class DelegatingConnection

Throws:

SQLException

setHoldability

public void setHoldability(int holdability)
                    throws SQLException

Specified by:

setHoldability in interface Connection

Overrides:

setHoldability in class DelegatingConnection

Throws:

SQLException

getHoldability

public int getHoldability()
                   throws SQLException

Specified by:

getHoldability in interface Connection

Overrides:

getHoldability in class DelegatingConnection

Throws:

SQLException

setSavepoint

public Savepoint setSavepoint()
                       throws SQLException

Specified by:

setSavepoint in interface Connection

Overrides:

setSavepoint in class DelegatingConnection

Throws:

SQLException

setSavepoint

public Savepoint setSavepoint(String name)
                       throws SQLException

Specified by:

setSavepoint in interface Connection

Overrides:

setSavepoint in class DelegatingConnection

Throws:

SQLException

rollback

public void rollback(Savepoint savepoint)
              throws SQLException

Specified by:

rollback in interface Connection

Overrides:

rollback in class DelegatingConnection

Throws:

SQLException

releaseSavepoint

public void releaseSavepoint(Savepoint savepoint)
                      throws SQLException

Specified by:

releaseSavepoint in interface Connection

Overrides:

releaseSavepoint in class DelegatingConnection

Throws:

SQLException

createStatement

public Statement createStatement(int resultSetType,
 int resultSetConcurrency,
 int resultSetHoldability)
                          throws SQLException

Specified by:

createStatement in interface Connection

Overrides:

createStatement in class DelegatingConnection

Throws:

SQLException

prepareStatement

public PreparedStatement prepareStatement(String sql,
 int resultSetType,
 int resultSetConcurrency,
 int resultSetHoldability)
                                   throws SQLException

Specified by:

prepareStatement in interface Connection

Overrides:

prepareStatement in class DelegatingConnection

Throws:

SQLException

prepareCall

public CallableStatement prepareCall(String sql,
 int resultSetType,
 int resultSetConcurrency,
 int resultSetHoldability)
                              throws SQLException

Specified by:

prepareCall in interface Connection

Overrides:

prepareCall in class DelegatingConnection

Throws:

SQLException

prepareStatement

public PreparedStatement prepareStatement(String sql,
 int autoGeneratedKeys)
                                   throws SQLException

Specified by:

prepareStatement in interface Connection

Overrides:

prepareStatement in class DelegatingConnection

Throws:

SQLException

prepareStatement

public PreparedStatement prepareStatement(String sql,
 int[] columnIndexes)
                                   throws SQLException

Specified by:

prepareStatement in interface Connection

Overrides:

prepareStatement in class DelegatingConnection

Throws:

SQLException

prepareStatement

public PreparedStatement prepareStatement(String sql,
 String[] columnNames)
                                   throws SQLException

Specified by:

prepareStatement in interface Connection

Overrides:

prepareStatement in class DelegatingConnection

Throws:

SQLException

createClob

public Clob createClob()
                throws SQLException

Specified by:

createClob in interface Connection

Overrides:

createClob in class DelegatingConnection

Throws:

SQLException

createBlob

public Blob createBlob()
                throws SQLException

Specified by:

createBlob in interface Connection

Overrides:

createBlob in class DelegatingConnection

Throws:

SQLException

createNClob

public NClob createNClob()
                  throws SQLException

Specified by:

createNClob in interface Connection

Overrides:

createNClob in class DelegatingConnection

Throws:

SQLException

createSQLXML

public SQLXML createSQLXML()
                    throws SQLException

Specified by:

createSQLXML in interface Connection

Overrides:

createSQLXML in class DelegatingConnection

Throws:

SQLException

isValid

public boolean isValid(int timeout)
                throws SQLException

Specified by:

isValid in interface Connection

Overrides:

isValid in class DelegatingConnection

Throws:

SQLException

setClientInfo

public void setClientInfo(String name,
 String value)
                   throws SQLClientInfoException

Specified by:

setClientInfo in interface Connection

Overrides:

setClientInfo in class DelegatingConnection

Throws:

SQLClientInfoException

setClientInfo

public void setClientInfo(Properties properties)
                   throws SQLClientInfoException

Specified by:

setClientInfo in interface Connection

Overrides:

setClientInfo in class DelegatingConnection

Throws:

SQLClientInfoException

getClientInfo

public String getClientInfo(String name)
                     throws SQLException

Specified by:

getClientInfo in interface Connection

Overrides:

getClientInfo in class DelegatingConnection

Throws:

SQLException

getClientInfo

public Properties getClientInfo()
                         throws SQLException

Specified by:

getClientInfo in interface Connection

Overrides:

getClientInfo in class DelegatingConnection

Throws:

SQLException

createArrayOf

public Array createArrayOf(String typeName,
 Object[] elements)
                    throws SQLException

Specified by:

createArrayOf in interface Connection

Overrides:

createArrayOf in class DelegatingConnection

Throws:

SQLException

createStruct

public Struct createStruct(String typeName,
 Object[] attributes)
                    throws SQLException

Specified by:

createStruct in interface Connection

Overrides:

createStruct in class DelegatingConnection

Throws:

SQLException

setSchema

public void setSchema(String schema)
               throws SQLException

Specified by:

setSchema in interface Connection

Overrides:

setSchema in class DelegatingConnection

Throws:

SQLException

getSchema

public String getSchema()
                 throws SQLException

Specified by:

getSchema in interface Connection

Overrides:

getSchema in class DelegatingConnection

Throws:

SQLException

abort

public void abort(Executor executor)
           throws SQLException

Specified by:

abort in interface Connection

Overrides:

abort in class DelegatingConnection

Throws:

SQLException

setNetworkTimeout

public void setNetworkTimeout(Executor executor,
 int milliseconds)
                       throws SQLException

Specified by:

setNetworkTimeout in interface Connection

Overrides:

setNetworkTimeout in class DelegatingConnection

Throws:

SQLException

getNetworkTimeout

public int getNetworkTimeout()
                      throws SQLException

Specified by:

getNetworkTimeout in interface Connection

Overrides:

getNetworkTimeout in class DelegatingConnection

Throws:

SQLException

beginRequest

public void beginRequest()
                  throws SQLException

Specified by:

beginRequest in interface Connection

Overrides:

beginRequest in class DelegatingConnection

Throws:

SQLException

endRequest

public void endRequest()
                throws SQLException

Specified by:

endRequest in interface Connection

Overrides:

endRequest in class DelegatingConnection

Throws:

SQLException

setShardingKeyIfValid

public boolean setShardingKeyIfValid(ShardingKey shardingKey,
 ShardingKey superShardingKey,
 int timeout)
                              throws SQLException

Specified by:

setShardingKeyIfValid in interface Connection

Overrides:

setShardingKeyIfValid in class DelegatingConnection

Throws:

SQLException

setShardingKeyIfValid

public boolean setShardingKeyIfValid(ShardingKey shardingKey,
 int timeout)
                              throws SQLException

Specified by:

setShardingKeyIfValid in interface Connection

Overrides:

setShardingKeyIfValid in class DelegatingConnection

Throws:

SQLException

setShardingKey

public void setShardingKey(ShardingKey shardingKey,
 ShardingKey superShardingKey)
                    throws SQLException

Specified by:

setShardingKey in interface Connection

Overrides:

setShardingKey in class DelegatingConnection

Throws:

SQLException

setShardingKey

public void setShardingKey(ShardingKey shardingKey)
                    throws SQLException

Specified by:

setShardingKey in interface Connection

Overrides:

setShardingKey in class DelegatingConnection

Throws:

SQLException

unwrap

public <T> T unwrap(Class<T> iface)
             throws SQLException

Specified by:

unwrap in interface Wrapper

Overrides:

unwrap in class DelegatingConnection

Throws:

SQLException

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Specified by:

isWrapperFor in interface Wrapper

Overrides:

isWrapperFor in class DelegatingConnection

Throws:

SQLException

failWhenClosed

protected final void failWhenClosed()
                             throws SQLException

Invokes the isClosed() method, and, if it returns true, throws a new SQLException indicating that because the connection is closed the operation cannot proceed.

If this ConditionallyCloseableConnection was created with strict closed checking enabled (strongly recommended), then this method will be called where appropriate. Otherwise this method is not called internally by default implementations of the methods in the ConditionallyCloseableConnection class. Subclasses may, and often will, call this method directly for any reason.

Throws:

SQLNonTransientConnectionException - when an invocation of the isClosed() method returns true; its SQLState will begin with 08

SQLException - if isClosed() throws a SQLException

See Also:

• isClosed()
• isCloseable()
• setCloseable(boolean)
• close()