public class MariaDbStatement extends Object implements Statement, Cloneable
Modifier and Type | Field and Description |
---|---|
protected boolean |
canUseServerTimeout |
protected boolean |
closed |
protected MariaDbConnection |
connection
the Connection object.
|
protected ExceptionFactory |
exceptionFactory |
protected boolean |
executing |
protected int |
fetchSize |
protected ReentrantLock |
lock |
protected long |
maxRows |
protected Options |
options |
protected Protocol |
protocol
the protocol used to talk to the server.
|
protected int |
queryTimeout |
protected Results |
results |
protected int |
resultSetConcurrency |
protected int |
resultSetScrollType |
CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO
Constructor and Description |
---|
MariaDbStatement(MariaDbConnection connection,
int resultSetScrollType,
int resultSetConcurrency,
ExceptionFactory exceptionFactory)
Creates a new Statement.
|
Modifier and Type | Method and Description |
---|---|
void |
addBatch(String sql)
Adds the given SQL command to the current list of commands for this
Statement
object. |
void |
cancel()
Cancels this
Statement object if both the DBMS and driver support aborting an SQL
statement. |
protected void |
checkClose()
Check if statement is closed, and throw exception if so.
|
void |
checkCloseOnCompletion(ResultSet resultSet)
Check that close on completion is asked, and close if so.
|
void |
clearBatch()
Empties this
Statement object's current list of SQL send. |
void |
clearWarnings()
Clears all the warnings reported on this
Statement object. |
MariaDbStatement |
clone(MariaDbConnection connection)
Clone statement.
|
void |
close()
Releases this
Statement object's database and JDBC resources immediately instead
of waiting for this to happen when it is automatically closed. |
void |
closeOnCompletion() |
String |
enquoteIdentifier(String identifier,
boolean alwaysQuote)
Escaped identifier according to MariaDB requirement.
|
String |
enquoteLiteral(String val)
Enquote String value.
|
String |
enquoteNCharLiteral(String val)
Enquote utf8 value.
|
boolean |
execute(String sql)
executes a query.
|
boolean |
execute(String sql,
int autoGeneratedKeys)
Executes the given SQL statement, which may return multiple results, and signals the driver
that any auto-generated keys should be made available for retrieval.
|
boolean |
execute(String sql,
int[] columnIndexes)
Executes the given SQL statement, which may return multiple results, and signals the driver
that the auto-generated keys indicated in the given array should be made available for
retrieval.
|
boolean |
execute(String sql,
String[] columnNames)
Executes the given SQL statement, which may return multiple results, and signals the driver
that the auto-generated keys indicated in the given array should be made available for
retrieval.
|
int[] |
executeBatch()
Execute statements. depending on option, queries mays be rewritten :
those queries will be rewritten if possible to INSERT INTO ...
|
protected void |
executeBatchEpilogue() |
protected BatchUpdateException |
executeBatchExceptionEpilogue(SQLException initialSqle,
int size) |
protected void |
executeEpilogue() |
protected SQLException |
executeExceptionEpilogue(SQLException sqle)
Reset timeout after query, re-throw SQL exception.
|
long[] |
executeLargeBatch()
Execute batch, like executeBatch(), with returning results with long[].
|
long |
executeLargeUpdate(String sql)
Executes the given SQL statement, which may be an INSERT, UPDATE, or DELETE statement or an SQL
statement that returns nothing, such as an SQL DDL statement.
|
long |
executeLargeUpdate(String sql,
int autoGeneratedKeys)
Identical to executeLargeUpdate(String sql), with a flag that indicate that autoGeneratedKeys
(primary key fields with "auto_increment") generated id's must be retrieved.
|
long |
executeLargeUpdate(String sql,
int[] columnIndexes)
Identical to executeLargeUpdate(String sql, int autoGeneratedKeys) with autoGeneratedKeys =
Statement.RETURN_GENERATED_KEYS set.
|
long |
executeLargeUpdate(String sql,
String[] columnNames)
Identical to executeLargeUpdate(String sql, int autoGeneratedKeys) with autoGeneratedKeys =
Statement.RETURN_GENERATED_KEYS set.
|
ResultSet |
executeQuery(String sql)
executes a select query.
|
protected void |
executeQueryPrologue(boolean isBatch)
Command prolog.
|
int |
executeUpdate(String sql)
Executes an update.
|
int |
executeUpdate(String sql,
int autoGeneratedKeys)
Executes the given SQL statement and signals the driver with the given flag about whether the
auto-generated keys produced by this
Statement object should be made available for
retrieval. |
int |
executeUpdate(String sql,
int[] columnIndexes)
Executes the given SQL statement and signals the driver that the auto-generated keys indicated
in the given array should be made available for retrieval.
|
int |
executeUpdate(String sql,
String[] columnNames)
Executes the given SQL statement and signals the driver that the auto-generated keys indicated
in the given array should be made available for retrieval.
|
MariaDbConnection |
getConnection()
Gets the connection that created this statement.
|
int |
getFetchDirection()
Retrieves the direction for fetching rows from database tables that is the default for result
sets generated from this
Statement object. |
int |
getFetchSize()
Retrieves the number of result set rows that is the default fetch size for
ResultSet
objects generated from this Statement object. |
ResultSet |
getGeneratedKeys()
Retrieves any auto-generated keys created as a result of executing this
Statement
object. |
long |
getLargeMaxRows()
Retrieves the maximum number of rows that a ResultSet object produced by this Statement object
can contain.
|
long |
getLargeUpdateCount()
Retrieves the current result as an update count; if the result is a ResultSet object or there
are no more results, -1 is returned.
|
int |
getMaxFieldSize()
Retrieves the maximum number of bytes that can be returned for character and binary column
values in a
ResultSet object produced by this Statement object. |
int |
getMaxRows()
Retrieves the maximum number of rows that a
ResultSet object produced by this
Statement object can contain. |
boolean |
getMoreResults()
Moves to this
Statement object's next result, returns true if it is a
ResultSet object, and implicitly closes any current ResultSet
object(s) obtained with the method getResultSet . |
boolean |
getMoreResults(int current)
Moves to this
Statement object's next result, deals with any current
ResultSet object(s) according to the instructions specified by the given flag, and
returns true if the next result is a ResultSet object. |
int |
getQueryTimeout()
Retrieves the number of seconds the driver will wait for a
Statement object to
execute. |
ResultSet |
getResultSet()
Retrieves the current result as a ResultSet object.
|
int |
getResultSetConcurrency()
Retrieves the result set concurrency for
ResultSet objects generated by this
Statement object. |
int |
getResultSetHoldability()
Retrieves the result set holdability for
ResultSet objects generated by this
Statement object. |
int |
getResultSetType()
Retrieves the result set type for
ResultSet objects generated by this
Statement object. |
int |
getUpdateCount()
Retrieves the current result as an update count; if the result is a ResultSet object or there
are no more results, -1 is returned.
|
SQLWarning |
getWarnings()
Retrieves the first warning reported by calls on this
Statement object. |
boolean |
isClosed()
Retrieves whether this
Statement object has been closed. |
boolean |
isCloseOnCompletion() |
boolean |
isPoolable()
Returns a value indicating whether the
Statement is poolable or not. |
boolean |
isSimpleIdentifier(String identifier)
Retrieves whether identifier is a simple SQL identifier.
|
boolean |
isWrapperFor(Class<?> interfaceOrWrapper)
Returns true if this either implements the interface argument or is directly or indirectly a
wrapper for an object that does.
|
void |
setCursorName(String name)
Sets the SQL cursor name to the given
String , which will be used by subsequent
Statement object execute methods. |
void |
setEscapeProcessing(boolean enable)
Sets escape processing on or off.
|
void |
setFetchDirection(int direction)
Gives the driver a hint as to the direction in which rows will be processed in
ResultSet
objects created using this Statement object. |
void |
setFetchSize(int rows)
Gives the JDBC driver a hint as to the number of rows that should be fetched from the database
when more rows are needed for
ResultSet objects generated by this Statement
. |
void |
setLargeMaxRows(long max)
Sets the limit for the maximum number of rows that any ResultSet object generated by this
Statement object can contain to the given number.
|
void |
setLocalInfileInputStream(InputStream inputStream)
Sets the inputStream that will be used for the next execute that uses "LOAD DATA LOCAL INFILE".
|
void |
setMaxFieldSize(int max)
Sets the limit for the maximum number of bytes that can be returned for character and binary
column values in a
ResultSet object produced by this Statement
object. |
void |
setMaxRows(int max)
Sets the limit for the maximum number of rows that any
ResultSet object generated
by this Statement object can contain to the given number. |
void |
setPoolable(boolean poolable)
Requests that a
Statement be pooled or not pooled. |
void |
setQueryTimeout(int seconds)
Sets the number of seconds the driver will wait for a
Statement object to execute
to the given number of seconds. |
protected void |
setTimerTask(boolean isBatch) |
protected void |
skipMoreResults() |
boolean |
testExecute(String sql,
Charset charset)
!
|
<T> T |
unwrap(Class<T> iface)
Returns an object that implements the given interface to allow access to non-standard methods,
or standard methods not exposed by the proxy.
|
protected final ReentrantLock lock
protected final int resultSetScrollType
protected final int resultSetConcurrency
protected final Options options
protected final boolean canUseServerTimeout
protected Protocol protocol
protected MariaDbConnection connection
protected volatile boolean closed
protected int queryTimeout
protected long maxRows
protected Results results
protected int fetchSize
protected volatile boolean executing
protected ExceptionFactory exceptionFactory
public MariaDbStatement(MariaDbConnection connection, int resultSetScrollType, int resultSetConcurrency, ExceptionFactory exceptionFactory)
connection
- the connection to return in getConnection.resultSetScrollType
- one of the following ResultSet
constants:
ResultSet.TYPE_FORWARD_ONLY
, ResultSet.TYPE_SCROLL_INSENSITIVE
, or
ResultSet.TYPE_SCROLL_SENSITIVE
resultSetConcurrency
- a concurrency type; one of ResultSet.CONCUR_READ_ONLY
or ResultSet.CONCUR_UPDATABLE
exceptionFactory
- exception factorypublic MariaDbStatement clone(MariaDbConnection connection) throws CloneNotSupportedException
connection
- connectionCloneNotSupportedException
- if any error occur.protected void setTimerTask(boolean isBatch)
protected void executeQueryPrologue(boolean isBatch) throws SQLException
isBatch
- is batchSQLException
- if statement is closedprotected SQLException executeExceptionEpilogue(SQLException sqle)
sqle
- current exceptionprotected void executeEpilogue()
protected void executeBatchEpilogue()
protected BatchUpdateException executeBatchExceptionEpilogue(SQLException initialSqle, int size)
public String enquoteLiteral(String val) throws SQLException
val
- string value to enquoteSQLException
- -not possible-public String enquoteIdentifier(String identifier, boolean alwaysQuote) throws SQLException
identifier
- identifieralwaysQuote
- indicate if identifier must be enquoted even if not necessary.SQLException
- if containing u0000 characterpublic boolean isSimpleIdentifier(String identifier) throws SQLException
identifier
- identifierSQLException
- exceptionpublic String enquoteNCharLiteral(String val) throws SQLException
val
- value to enquoteSQLException
- - not possible -public boolean testExecute(String sql, Charset charset) throws SQLException
sql
- sqlcharset
- charsetSQLException
- if any exception occurpublic boolean execute(String sql) throws SQLException
execute
in interface Statement
sql
- the querySQLException
- if the query could not be sent to serverpublic boolean execute(String sql, int autoGeneratedKeys) throws SQLException
INSERT
statement, or an SQL statement
able to return auto-generated keys (the list of such statements is vendor-specific).
In some (uncommon) situations, a single SQL statement may return multiple result sets and/or
update counts. Normally you can ignore this unless you are (1) executing a stored procedure
that you know may return multiple results or (2) you are dynamically executing an unknown SQL
string. The execute
method executes an SQL statement and indicates the form of the
first result. You must then use the methods getResultSet
or getUpdateCount
to retrieve the result, and getInternalMoreResults
to move to any
subsequent result(s).
execute
in interface Statement
sql
- any SQL statementautoGeneratedKeys
- a constant indicating whether auto-generated keys should be made
available for retrieval using the methodgetGeneratedKeys
; one of the following
constants: Statement.RETURN_GENERATED_KEYS
or
Statement.NO_GENERATED_KEYS
true
if the first result is a ResultSet
object; false
if it is an update count or there are no resultsSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the second parameter supplied to this method is not
Statement.RETURN_GENERATED_KEYS
or Statement.NO_GENERATED_KEYS
.getResultSet()
,
getUpdateCount()
,
getMoreResults()
,
getGeneratedKeys()
public boolean execute(String sql, int[] columnIndexes) throws SQLException
INSERT
statement, or an SQL statement able to return
auto-generated keys (the list of such statements is vendor-specific).
Under some (uncommon) situations, a single SQL statement may return multiple result sets
and/or update counts. Normally you can ignore this unless you are (1) executing a stored
procedure that you know may return multiple results or (2) you are dynamically executing an
unknown SQL string. The execute
method executes an SQL statement and indicates the
form of the first result. You must then use the methods getResultSet
or
getUpdateCount
to retrieve the result, and getInternalMoreResults
to move
to any subsequent result(s).
execute
in interface Statement
sql
- any SQL statementcolumnIndexes
- an array of the indexes of the columns in the inserted row that should be
made available for retrieval by a call to the method getGeneratedKeys
true
if the first result is a ResultSet
object; false
if it is an update count or there are no resultsSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the elements in the int
array passed to this method
are not valid column indexesgetResultSet()
,
getUpdateCount()
,
getMoreResults()
public boolean execute(String sql, String[] columnNames) throws SQLException
INSERT
statement, or an SQL statement able to return
auto-generated keys (the list of such statements is vendor-specific).
In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string.
The execute
method executes an SQL statement and indicates the form of the
first result. You must then use the methods getResultSet
or getUpdateCount
to retrieve the result, and getInternalMoreResults
to move to any
subsequent result(s).
execute
in interface Statement
sql
- any SQL statementcolumnNames
- an array of the names of the columns in the inserted row that should be made
available for retrieval by a call to the method getGeneratedKeys
true
if the next result is a ResultSet
object; false
if it is an update count or there are no more resultsSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the elements of the String
array passed to this
method are not valid column namesgetResultSet()
,
getUpdateCount()
,
getMoreResults()
,
getGeneratedKeys()
public ResultSet executeQuery(String sql) throws SQLException
executeQuery
in interface Statement
sql
- the query to send to the serverSQLException
- if something went wrongpublic int executeUpdate(String sql) throws SQLException
executeUpdate
in interface Statement
sql
- the update query.SQLException
- if the query could not be sent to server.public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException
Statement
object should be made available for
retrieval. The driver will ignore the flag if the SQL statement is not an INSERT
statement, or an SQL statement able to return auto-generated keys (the list of such statements
is vendor-specific). Result-set are permitted for historical reason, even if spec indicate to
throw exception.executeUpdate
in interface Statement
sql
- an SQL Data Manipulation Language (DML) statement, such as INSERT
,
UPDATE
or DELETE
; or an SQL statement that returns nothing, such
as a DDL statement.autoGeneratedKeys
- a flag indicating whether auto-generated keys should be made available
for retrieval; one of the following constants: Statement.RETURN_GENERATED_KEYS
Statement.NO_GENERATED_KEYS
SQLException
- if a database access error occurs, this method is called on a closed
Statement
or the given constant is not one of those allowedpublic int executeUpdate(String sql, int[] columnIndexes) throws SQLException
INSERT
statement, or an SQL statement able to return auto-generated keys (the list of such statements
is vendor-specific). Result-set are permitted for historical reason, even if spec indicate to
throw exception.executeUpdate
in interface Statement
sql
- an SQL Data Manipulation Language (DML) statement, such as INSERT
,
UPDATE
or DELETE
; or an SQL statement that returns nothing, such
as a DDL statement.columnIndexes
- an array of column indexes indicating the columns that should be returned
from the inserted rowSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the second argument supplied to this method is not an int
array whose elements are valid column indexespublic int executeUpdate(String sql, String[] columnNames) throws SQLException
INSERT
statement,
or an SQL statement able to return auto-generated keys (the list of such statements is
vendor-specific). Result-set are permitted for historical reason, even if spec indicate to
throw exception.executeUpdate
in interface Statement
sql
- an SQL Data Manipulation Language (DML) statement, such as INSERT
,
UPDATE
or DELETE
; or an SQL statement that returns nothing, such
as a DDL statement.columnNames
- an array of the names of the columns that should be returned from the
inserted rowINSERT
, UPDATE
, or DELETE
statements, or 0 for SQL statements that return nothingSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the second argument supplied to this method is not a String
array whose elements are valid column namespublic long executeLargeUpdate(String sql) throws SQLException
executeLargeUpdate
in interface Statement
sql
- sql commandSQLException
- if any error occur during executionpublic long executeLargeUpdate(String sql, int autoGeneratedKeys) throws SQLException
Those id's will be available using getGeneratedKeys() method.
executeLargeUpdate
in interface Statement
sql
- sql commandautoGeneratedKeys
- a flag indicating whether auto-generated keys should be made available
for retrieval; one of the following constants: Statement.RETURN_GENERATED_KEYS
Statement.NO_GENERATED_KEYSSQLException
- if any error occur during executionpublic long executeLargeUpdate(String sql, int[] columnIndexes) throws SQLException
executeLargeUpdate
in interface Statement
sql
- sql commandcolumnIndexes
- column IndexesSQLException
- if any error occur during executionpublic long executeLargeUpdate(String sql, String[] columnNames) throws SQLException
executeLargeUpdate
in interface Statement
sql
- sql commandcolumnNames
- columns namesSQLException
- if any error occur during executionpublic void close() throws SQLException
Statement
object's database and JDBC resources immediately instead
of waiting for this to happen when it is automatically closed. It is generally good practice to
release resources as soon as you are finished with them to avoid tying up database resources.
Calling the method close
on a Statement
object that is already closed
has no effect. Note:When a Statement
object is closed, its current
ResultSet
object, if one exists, is also closed.close
in interface AutoCloseable
close
in interface Statement
SQLException
- if a database access error occurspublic int getMaxFieldSize()
ResultSet
object produced by this Statement
object. This
limit applies only to BINARY
, VARBINARY
, LONGVARBINARY
,
CHAR
, VARCHAR
, NCHAR
, NVARCHAR
,
LONGNVARCHAR
and LONGVARCHAR
columns. If the limit is exceeded, the excess
data is silently discarded.getMaxFieldSize
in interface Statement
setMaxFieldSize(int)
public void setMaxFieldSize(int max)
ResultSet
object produced by this Statement
object. This limit applies only to BINARY
, VARBINARY
,
LONGVARBINARY
, CHAR
, VARCHAR
, NCHAR
,
NVARCHAR
, LONGNVARCHAR
and LONGVARCHAR
fields. If the limit is
exceeded, the excess data is silently discarded. For maximum portability, use values greater
than 256.setMaxFieldSize
in interface Statement
max
- the new column size limit in bytes; zero means there is no limitgetMaxFieldSize()
public int getMaxRows()
ResultSet
object produced by this
Statement
object can contain. If this limit is exceeded, the excess rows are
silently dropped.getMaxRows
in interface Statement
ResultSet
object produced by this
Statement
object; zero means there is no limitsetMaxRows(int)
public void setMaxRows(int max) throws SQLException
ResultSet
object generated
by this Statement
object can contain to the given number. If the limit is
exceeded, the excess rows are silently dropped.setMaxRows
in interface Statement
max
- the new max rows limit; zero means there is no limitSQLException
- if the condition max >= 0 is not satisfiedgetMaxRows()
public long getLargeMaxRows()
getLargeMaxRows
in interface Statement
public void setLargeMaxRows(long max) throws SQLException
setLargeMaxRows
in interface Statement
max
- the new max rows limit; zero means there is no limitSQLException
- if the condition max >= 0 is not satisfiedpublic void setEscapeProcessing(boolean enable)
PreparedStatements
objects will have no effect.setEscapeProcessing
in interface Statement
enable
- true
to enable escape processing; false
to disable itpublic int getQueryTimeout()
Statement
object to
execute. If the limit is exceeded, a SQLException
is thrown.getQueryTimeout
in interface Statement
setQueryTimeout(int)
public void setQueryTimeout(int seconds) throws SQLException
Statement
object to execute
to the given number of seconds. If the limit is exceeded, an SQLException
is
thrown. A JDBC driver must apply this limit to the execute
, executeQuery
and executeUpdate
methods.setQueryTimeout
in interface Statement
seconds
- the new query timeout limit in seconds; zero means there is no limitSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the condition seconds >= 0 is not satisfiedgetQueryTimeout()
public void setLocalInfileInputStream(InputStream inputStream) throws SQLException
inputStream
- inputStream instance, that will be used to send data to serverSQLException
- if statement is closedpublic void cancel() throws SQLException
Statement
object if both the DBMS and driver support aborting an SQL
statement. This method can be used by one thread to cancel a statement that is being executed
by another thread.
In case there is result-set from this Statement that are still streaming data from server, will cancel streaming.
cancel
in interface Statement
SQLException
- if a database access error occurs or this method is called on a closed
Statement
public SQLWarning getWarnings() throws SQLException
Statement
object. Subsequent
Statement
object warnings will be chained to this SQLWarning
object.
The warning chain is automatically cleared each time a statement is (re)executed. This
method may not be called on a closed Statement
object; doing so will cause an
SQLException
to be thrown.
Note: If you are processing a ResultSet
object, any warnings associated
with reads on that ResultSet
object will be chained on it rather than on the
Statement
object that produced it.
getWarnings
in interface Statement
SQLWarning
object or null
if there are no warningsSQLException
- if a database access error occurs or this method is called on a closed
Statement
public void clearWarnings()
Statement
object. After a call to this
method, the method getWarnings
will return null
until a new warning
is reported for this Statement
object.clearWarnings
in interface Statement
public void setCursorName(String name) throws SQLException
String
, which will be used by subsequent
Statement
object execute
methods. This name can then be used in SQL
positioned update or delete statements to identify the current row in the ResultSet
object generated by this statement. If the database does not support positioned
update/delete, this method is a noop. To insure that a cursor has the proper isolation level to
support updates, the cursor's SELECT
statement should have the form
SELECT FOR UPDATE
. If FOR UPDATE
is not present, positioned updates may
fail.
Note: By definition, the execution of positioned updates and deletes must be done by
a different Statement
object than the one that generated the ResultSet
object being used for positioning. Also, cursor names must be unique within a
connection.
setCursorName
in interface Statement
name
- the new cursor name, which must be unique within a connectionSQLException
- if a database access error occurs or this method is called on a closed
Statement
public MariaDbConnection getConnection()
getConnection
in interface Statement
public ResultSet getGeneratedKeys() throws SQLException
Statement
object. If this Statement
object did not generate any keys, an empty
ResultSet
object is returned.
Note:If the columns which represent the auto-generated keys were not specified, the JDBC driver implementation will determine the columns which best represent the auto-generated keys.
getGeneratedKeys
in interface Statement
ResultSet
object containing the auto-generated key(s) generated by the
execution of this Statement
objectSQLException
- if a database access error occurs or this method is called on a closed
Statement
public int getResultSetHoldability()
ResultSet
objects generated by this
Statement
object.getResultSetHoldability
in interface Statement
ResultSet.HOLD_CURSORS_OVER_COMMIT
or
ResultSet.CLOSE_CURSORS_AT_COMMIT
public boolean isClosed()
Statement
object has been closed. A Statement
is closed if the method close has been called on it, or if it is automatically closed.public boolean isPoolable()
Statement
is poolable or not.isPoolable
in interface Statement
true
if the Statement
is poolable; false
otherwisesetPoolable(boolean)
public void setPoolable(boolean poolable)
Statement
be pooled or not pooled. The value specified is a hint
to the statement pool implementation indicating whether the applicaiton wants the statement to
be pooled. It is up to the statement pool manager as to whether the hint is used.
The poolable value of a statement is applicable to both internal statement caches implemented by the driver and external statement caches implemented by application servers and other applications.
By default, a Statement
is not poolable when created, and a
PreparedStatement
and CallableStatement
are poolable when created.
setPoolable
in interface Statement
poolable
- requests that the statement be pooled if true and that the statement not be
pooled if falsepublic ResultSet getResultSet() throws SQLException
getResultSet
in interface Statement
SQLException
- if a database access error occurs or this method is called on a closed
Statementpublic int getUpdateCount()
getUpdateCount
in interface Statement
public long getLargeUpdateCount()
getLargeUpdateCount
in interface Statement
protected void skipMoreResults() throws SQLException
SQLException
public boolean getMoreResults() throws SQLException
Statement
object's next result, returns true
if it is a
ResultSet
object, and implicitly closes any current ResultSet
object(s) obtained with the method getResultSet
. There are no more results when
the following is true:
// stmt is a Statement object ((stmt.getInternalMoreResults() == false) && (stmt.getUpdateCount() == -1))
getMoreResults
in interface Statement
true
if the next result is a ResultSet
object; false
if it is an update count or there are no more resultsSQLException
- if a database access error occurs or this method is called on a closed
Statement
execute(java.lang.String)
public boolean getMoreResults(int current) throws SQLException
Statement
object's next result, deals with any current
ResultSet
object(s) according to the instructions specified by the given flag, and
returns true
if the next result is a ResultSet
object. There are no
more results when the following is true:
// stmt is a Statement object ((stmt.getInternalMoreResults(current) == false) && (stmt.getUpdateCount() == -1))
getMoreResults
in interface Statement
current
- one of the following Statement
constants indicating what should
happen to current ResultSet
objects obtained using the method
getResultSet
: Statement.CLOSE_CURRENT_RESULT
,
Statement.KEEP_CURRENT_RESULT
, or Statement.CLOSE_ALL_RESULTS
true
if the next result is a ResultSet
object; false
if it is an update count or there are no more resultsSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the argument supplied is not one of the following:
Statement.CLOSE_CURRENT_RESULT
, Statement.KEEP_CURRENT_RESULT
or
Statement.CLOSE_ALL_RESULTS
execute(java.lang.String)
public int getFetchDirection()
Statement
object. If this Statement
object
has not set a fetch direction by calling the method setFetchDirection
, the return
value is implementation-specific.getFetchDirection
in interface Statement
Statement
objectsetFetchDirection(int)
public void setFetchDirection(int direction)
ResultSet
objects created using this Statement
object. The default value is
ResultSet.FETCH_FORWARD
.
Note that this method sets the default fetch direction for result sets generated by this
Statement
object. Each result set has its own methods for getting and setting its
own fetch direction.
setFetchDirection
in interface Statement
direction
- the initial direction for processing rowsgetFetchDirection()
public int getFetchSize()
ResultSet
objects generated from this Statement
object. If this Statement
object has not set a fetch size by calling the method setFetchSize
, the
return value is implementation-specific.getFetchSize
in interface Statement
Statement
objectsetFetchSize(int)
public void setFetchSize(int rows) throws SQLException
ResultSet
objects generated by this Statement
. If the value specified is zero, then the hint is ignored. The default value is zero.setFetchSize
in interface Statement
rows
- the number of rows to fetchSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the condition rows >= 0
is not satisfied.getFetchSize()
public int getResultSetConcurrency()
ResultSet
objects generated by this
Statement
object.getResultSetConcurrency
in interface Statement
ResultSet.CONCUR_READ_ONLY
or ResultSet.CONCUR_UPDATABLE
public int getResultSetType()
ResultSet
objects generated by this
Statement
object.getResultSetType
in interface Statement
ResultSet.TYPE_FORWARD_ONLY
,
ResultSet.TYPE_SCROLL_INSENSITIVE
, or ResultSet.TYPE_SCROLL_SENSITIVE
public void addBatch(String sql) throws SQLException
Statement
object. The send in this list can be executed as a batch by calling the method
executeBatch
.addBatch
in interface Statement
sql
- typically this is a SQL INSERT
or UPDATE
statementSQLException
- if a database access error occurs, this method is called on a closed
Statement
or the driver does not support batch updatesexecuteBatch()
,
DatabaseMetaData.supportsBatchUpdates()
public void clearBatch()
Statement
object's current list of SQL send.clearBatch
in interface Statement
addBatch(java.lang.String)
,
DatabaseMetaData.supportsBatchUpdates()
public int[] executeBatch() throws SQLException
those queries will be rewritten if possible to INSERT INTO ... VALUES (...) ; INSERT INTO ... VALUES (...);
if option rewriteBatchedStatements is set to true, rewritten to INSERT INTO ... VALUES (...), (...);
executeBatch
in interface Statement
SQLException
- if a database access error occurs, this method is called on a closed
Statement
or the driver does not support batch statements. Throws BatchUpdateException
(a subclass of SQLException
) if one of the send sent to
the database fails to execute properly or attempts to return a result set.addBatch(java.lang.String)
,
DatabaseMetaData.supportsBatchUpdates()
public long[] executeLargeBatch() throws SQLException
executeLargeBatch
in interface Statement
SQLException
- if a database error occur.public <T> T unwrap(Class<T> iface) throws SQLException
If the receiver implements the interface then the result is the receiver or a proxy for the
receiver. If the receiver is a wrapper and the wrapped object implements the interface then the
result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result
of calling unwrap
recursively on the wrapped object or a proxy for that result. If
the receiver is not a wrapper and does not implement the interface, then an SQLException
is thrown.
unwrap
in interface Wrapper
iface
- A Class defining an interface that the result must implement.SQLException
- If no object found that implements the interfacepublic boolean isWrapperFor(Class<?> interfaceOrWrapper) throws SQLException
isWrapperFor
on the wrapped object. If this does not implement the interface and is not
a wrapper, return false. This method should be implemented as a low-cost operation compared to
unwrap
so that callers can use this method to avoid expensive unwrap
calls that may fail. If this method returns true then calling unwrap
with the same
argument should succeed.isWrapperFor
in interface Wrapper
interfaceOrWrapper
- a Class defining an interface.SQLException
- if an error occurs while determining whether this is a wrapper for an
object with the given interface.public void closeOnCompletion()
closeOnCompletion
in interface Statement
public boolean isCloseOnCompletion()
isCloseOnCompletion
in interface Statement
public void checkCloseOnCompletion(ResultSet resultSet) throws SQLException
resultSet
- resultSetSQLException
- if close has errorprotected void checkClose() throws SQLException
SQLException
- if statement closeCopyright © 2020 mariadb.com. All rights reserved.