com.singlestore.jdbc

Class ClientPreparedStatement

java.lang.Object

com.singlestore.jdbc.Statement

com.singlestore.jdbc.BasePreparedStatement

com.singlestore.jdbc.ClientPreparedStatement

All Implemented Interfaces:

AutoCloseable, PreparedStatement, Statement, Wrapper

public class ClientPreparedStatement
extends BasePreparedStatement

Field Summary

Fields inherited from class com.singlestore.jdbc.BasePreparedStatement

batchParameters, canCachePrepStmts, parameters, prepareResult, sql

Fields inherited from class com.singlestore.jdbc.Statement

autoGeneratedKeys, closed, closeOnCompletion, con, currResult, escape, fetchSize, isInsertDuplicate, lastSql, localInfileInputStream, lock, maxRows, queryTimeout, results, resultSetConcurrency, resultSetType

Fields inherited from interface java.sql.Statement

CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO

Constructor Summary

Constructors

Constructor and Description
ClientPreparedStatement(String sql, Connection con, ClosableLock lock, int autoGeneratedKeys, int resultSetType, int resultSetConcurrency, int defaultFetchSize) Client prepare statement constructor

Method Summary

Modifier and Type	Method and Description
void	addBatch() Adds a set of parameters to this PreparedStatement object's batch of commands.
void	clearBatch() Empties this PreparedStatement object's current list of parameters.
void	close() Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed.
boolean	execute() Executes the SQL statement in this PreparedStatement object, which may be any kind of SQL statement.
int[]	executeBatch() Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts.
long[]	executeLargeBatch() Execute batch, like executeBatch(), with returning results with long[].
long	executeLargeUpdate() Executes the SQL statement in this PreparedStatement object, which must be 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.
ResultSet	executeQuery() Executes the SQL query in this PreparedStatement object and returns the ResultSet object generated by the query.
int	executeUpdate() Executes the SQL statement in this PreparedStatement object, which must be 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.
ResultSetMetaData	getMetaData() Retrieves a ResultSetMetaData object that contains information about the columns of the ResultSet object that will be returned when this PreparedStatement object is executed.
ParameterMetaData	getParameterMetaData() Retrieves the number, types and properties of this PreparedStatement object's parameters.
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	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	setQueryTimeout(int seconds) Sets the number of seconds the driver will wait for a Statement object to execute to the given number of seconds.
String	toString()
protected void	validParameters()

Methods inherited from class com.singlestore.jdbc.BasePreparedStatement

addBatch, clearParameters, execute, execute, execute, execute, executeLargeUpdate, executeLargeUpdate, executeLargeUpdate, executeLargeUpdate, executeQuery, executeUpdate, executeUpdate, executeUpdate, executeUpdate, getLastSql, getMeta, reset, setArray, setAsciiStream, setAsciiStream, setAsciiStream, setBigDecimal, setBinaryStream, setBinaryStream, setBinaryStream, setBlob, setBlob, setBlob, setBoolean, setByte, setBytes, setCharacterStream, setCharacterStream, setCharacterStream, setClob, setClob, setClob, setDate, setDate, setDouble, setFloat, setInt, setLong, setNCharacterStream, setNCharacterStream, setNClob, setNClob, setNClob, setNString, setNull, setNull, setObject, setObject, setObject, setObject, setObject, setParameter, setParameters, setPrepareResult, setRef, setRowId, setShort, setSQLXML, setString, setTime, setTime, setTimestamp, setTimestamp, setUnicodeStream, setURL, updateMeta

Methods inherited from class com.singlestore.jdbc.Statement

abort, cancel, checkNotClosed, clearWarnings, closeOnCompletion, enquoteIdentifier, enquoteLiteral, enquoteNCharLiteral, escapeTimeout, fetchRemaining, getConnection, getFetchDirection, getFetchSize, getGeneratedKeys, getLargeMaxRows, getLargeUpdateCount, getMaxFieldSize, getMaxRows, getMoreResults, getMoreResults, getNextLocalInfileInputStream, getQueryTimeout, getResultSet, getResultSetConcurrency, getResultSetHoldability, getResultSetType, getUpdateCount, getWarnings, isClosed, isCloseOnCompletion, isPoolable, isWrapperFor, setCursorName, setEscapeProcessing, setFetchDirection, setFetchSize, setLocalInfileInputStream, setMaxFieldSize, setNextLocalInfileInputStream, setPoolable, unwrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.sql.Statement

cancel, clearWarnings, closeOnCompletion, getConnection, getFetchDirection, getFetchSize, getGeneratedKeys, getLargeMaxRows, getLargeUpdateCount, getMaxFieldSize, getMaxRows, getMoreResults, getMoreResults, getQueryTimeout, getResultSet, getResultSetConcurrency, getResultSetHoldability, getResultSetType, getUpdateCount, getWarnings, isClosed, isCloseOnCompletion, isPoolable, setCursorName, setEscapeProcessing, setFetchDirection, setFetchSize, setMaxFieldSize, setPoolable

Methods inherited from interface java.sql.Wrapper

isWrapperFor, unwrap

Constructor Detail

ClientPreparedStatement

public ClientPreparedStatement(String sql,
                               Connection con,
                               ClosableLock lock,
                               int autoGeneratedKeys,
                               int resultSetType,
                               int resultSetConcurrency,
                               int defaultFetchSize)

Client prepare statement constructor

Parameters:

sql - command

con - connection

lock - thread safe lock

autoGeneratedKeys - must command return automatically generated keys

resultSetType - resultset type

resultSetConcurrency - resultset concurrency

defaultFetchSize - default fetch size

Method Detail

execute

public boolean execute()
                throws SQLException

Executes the SQL statement in this PreparedStatement object, which may be any kind of SQL statement. Some prepared statements return multiple results; the execute method handles these complex statements as well as the simpler form of statements handled by the methods executeQuery and executeUpdate.

The execute method returns a boolean to indicate the form of the first result. You must call either the method getResultSet or getUpdateCount to retrieve the result; you must call getMoreResults to move to any subsequent result(s).

Specified by:

execute in interface PreparedStatement

Specified by:

execute in class BasePreparedStatement

Returns:

true if the first result is a ResultSet object; false if the first result is an update count or there is no result

Throws:

SQLException - if a database access error occurs; this method is called on a closed PreparedStatement or an argument is supplied to this method

SQLTimeoutException - when the driver has determined that the timeout value that was specified by the setQueryTimeout method has been exceeded and has at least attempted to cancel the currently running Statement

See Also:

Statement.execute(java.lang.String), Statement.getResultSet(), Statement.getUpdateCount(), Statement.getMoreResults()

executeQuery

public ResultSet executeQuery()
                       throws SQLException

Executes the SQL query in this PreparedStatement object and returns the ResultSet object generated by the query.

Specified by:

executeQuery in interface PreparedStatement

Specified by:

executeQuery in class BasePreparedStatement

Returns:

a ResultSet object that contains the data produced by the query; never null

Throws:

SQLException - if a database access error occurs; this method is called on a closed PreparedStatement or the SQL statement does not return a ResultSet object

SQLTimeoutException - when the driver has determined that the timeout value that was specified by the setQueryTimeout method has been exceeded and has at least attempted to cancel the currently running Statement

executeUpdate

public int executeUpdate()
                  throws SQLException

Executes the SQL statement in this PreparedStatement object, which must be 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.

Specified by:

executeUpdate in interface PreparedStatement

Specified by:

executeUpdate in class BasePreparedStatement

Returns:

either (1) the row count for SQL Data Manipulation Language (DML) statements or (2) 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs; this method is called on a closed PreparedStatement or the SQL statement returns a ResultSet object

SQLTimeoutException - when the driver has determined that the timeout value that was specified by the setQueryTimeout method has been exceeded and has at least attempted to cancel the currently running Statement

executeLargeUpdate

public long executeLargeUpdate()
                        throws SQLException

Executes the SQL statement in this PreparedStatement object, which must be 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.

This method should be used when the returned row count may exceed Integer.MAX_VALUE.

The default implementation will throw UnsupportedOperationException

Specified by:

executeLargeUpdate in interface PreparedStatement

Specified by:

executeLargeUpdate in class BasePreparedStatement

Returns:

either (1) the row count for SQL Data Manipulation Language (DML) statements or (2) 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs; this method is called on a closed PreparedStatement or the SQL statement returns a ResultSet object

SQLTimeoutException - when the driver has determined that the timeout value that was specified by the setQueryTimeout method has been exceeded and has at least attempted to cancel the currently running Statement

Since:

1.8

addBatch

public void addBatch()
              throws SQLException

Adds a set of parameters to this PreparedStatement object's batch of commands.

Specified by:

addBatch in interface PreparedStatement

Specified by:

addBatch in class BasePreparedStatement

Throws:

SQLException - if a database access error occurs or this method is called on a closed PreparedStatement

Since:

1.2

See Also:

Statement.addBatch(java.lang.String)

clearBatch

public void clearBatch()
                throws SQLException

Empties this PreparedStatement object's current list of parameters.

Specified by:

clearBatch in interface Statement

Overrides:

clearBatch in class BasePreparedStatement

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the driver does not support batch updates

Since:

1.2

See Also:

addBatch(), DatabaseMetaData.supportsBatchUpdates()

validParameters

protected void validParameters()
                        throws SQLException

Throws:

SQLException

setQueryTimeout

public void setQueryTimeout(int seconds)
                     throws SQLException

Description copied from class: Statement

Sets the number of seconds the driver will wait for a Statement object to execute to the given number of seconds. By default there is no limit on the amount of time allowed for a running statement to complete. If the limit is exceeded, an SQLTimeoutException is thrown. A JDBC driver must apply this limit to the execute, executeQuery and executeUpdate methods.

Note: JDBC driver implementations may also apply this limit to ResultSet methods (consult your driver vendor documentation for details).

Note: In the case of Statement batching, it is implementation defined as to whether the time-out is applied to individual SQL commands added via the addBatch method or to the entire batch of SQL commands invoked by the executeBatch method (consult your driver vendor documentation for details).

Specified by:

setQueryTimeout in interface Statement

Overrides:

setQueryTimeout in class Statement

Parameters:

seconds - the new query timeout limit in seconds; zero means there is no limit

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the condition seconds >= 0 is not satisfied

See Also:

Statement.getQueryTimeout()

setMaxRows

public void setMaxRows(int max)
                throws SQLException

Description copied from class: Statement

Sets the limit for the maximum number of rows that any ResultSet object generated by this Statement object can contain to the given number. If the limit is exceeded, the excess rows are silently dropped.

Specified by:

setMaxRows in interface Statement

Overrides:

setMaxRows in class Statement

Parameters:

max - the new max rows limit; zero means there is no limit

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the condition max >= 0 is not satisfied

See Also:

Statement.getMaxRows()

setLargeMaxRows

public void setLargeMaxRows(long max)
                     throws SQLException

Description copied from class: Statement

Sets the limit for the maximum number of rows that any ResultSet object generated by this Statement object can contain to the given number. If the limit is exceeded, the excess rows are silently dropped on JDBC side. To apply the limit on the database side, update sql select limit session engine variable Connection.setSqlSelectLimit(long).

Specified by:

setLargeMaxRows in interface Statement

Overrides:

setLargeMaxRows in class Statement

Parameters:

max - the new max rows limit; zero means there is no limit

Throws:

SQLException - if the condition max >= 0 is not satisfied

getMetaData

public ResultSetMetaData getMetaData()
                              throws SQLException

Retrieves a ResultSetMetaData object that contains information about the columns of the ResultSet object that will be returned when this PreparedStatement object is executed.

Because a PreparedStatement object is precompiled, it is possible to know about the ResultSet object that it will return without having to execute it. Consequently, it is possible to invoke the method getMetaData on a PreparedStatement object rather than waiting to execute it and then invoking the ResultSet.getMetaData method on the ResultSet object that is returned.

NOTE: Using this method may be expensive for some drivers due to the lack of underlying DBMS support.

Specified by:

getMetaData in interface PreparedStatement

Specified by:

getMetaData in class BasePreparedStatement

Returns:

the description of a ResultSet object's columns or null if the driver cannot return a ResultSetMetaData object

Throws:

SQLException - if a database access error occurs or this method is called on a closed PreparedStatement

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.2

getParameterMetaData

public ParameterMetaData getParameterMetaData()
                                       throws SQLException

Retrieves the number, types and properties of this PreparedStatement object's parameters.

Specified by:

getParameterMetaData in interface PreparedStatement

Specified by:

getParameterMetaData in class BasePreparedStatement

Returns:

a ParameterMetaData object that contains information about the number, types and properties for each parameter marker of this PreparedStatement object

Throws:

SQLException - if a database access error occurs or this method is called on a closed PreparedStatement

Since:

1.4

See Also:

ParameterMetaData

executeBatch

public int[] executeBatch()
                   throws SQLException

Description copied from class: Statement

Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts. The int elements of the array that is returned are ordered to correspond to the commands in the batch, which are ordered according to the order in which they were added to the batch. The elements in the array returned by the method executeBatch may be one of the following:

1. A number greater than or equal to zero -- indicates that the command was processed successfully and is an update count giving the number of rows in the database that were affected by the command's execution
2. A value of SUCCESS_NO_INFO -- indicates that the command was processed successfully but that the number of rows affected is unknown

   If one of the commands in a batch update fails to execute properly, this method throws a BatchUpdateException, and a JDBC driver may or may not continue to process the remaining commands in the batch. However, the driver's behavior must be consistent with a particular DBMS, either always continuing to process commands or never continuing to process commands. If the driver continues processing after a failure, the array returned by the method BatchUpdateException.getUpdateCounts will contain as many elements as there are commands in the batch, and at least one of the elements will be the following:

3. A value of EXECUTE_FAILED -- indicates that the command failed to execute successfully and occurs only if a driver continues to process commands after a command fails

The possible implementations and return values have been modified in the Java 2 SDK, Standard Edition, version 1.3 to accommodate the option of continuing to process commands in a batch update after a BatchUpdateException object has been thrown.

Specified by:

executeBatch in interface Statement

Specified by:

executeBatch in class BasePreparedStatement

Returns:

an array of update counts containing one element for each command in the batch. The elements of the array are ordered according to the order in which commands were added to the batch.

Throws:

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 commands sent to the database fails to execute properly or attempts to return a result set.

SQLTimeoutException - when the driver has determined that the timeout value that was specified by the setQueryTimeout method has been exceeded and has at least attempted to cancel the currently running Statement

See Also:

Statement.addBatch(java.lang.String), DatabaseMetaData.supportsBatchUpdates()

executeLargeBatch

public long[] executeLargeBatch()
                         throws SQLException

Description copied from class: Statement

Execute batch, like executeBatch(), with returning results with long[]. For when row count may exceed Integer.MAX_VALUE.

Specified by:

executeLargeBatch in interface Statement

Specified by:

executeLargeBatch in class BasePreparedStatement

Returns:

an array of update counts (one element for each command in the batch)

Throws:

SQLException - if a database error occur.

close

public void close()
           throws SQLException

Description copied from class: Statement

Releases this 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.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Statement

Overrides:

close in class Statement

Throws:

SQLException - if a database access error occurs

toString

public String toString()

Overrides:

toString in class BasePreparedStatement