Class StatementWrapper
- java.lang.Object
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- com.gargoylesoftware.base.resource.jdbc.StatementWrapper
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- All Implemented Interfaces:
java.lang.AutoCloseable,java.sql.Statement,java.sql.Wrapper
- Direct Known Subclasses:
PreparedStatementWrapper
public class StatementWrapper extends java.lang.Object implements java.sql.StatementThe object used for executing a static SQL statement and obtaining the results produced by it.
Only one
ResultSetobject perStatementobject can be open at any point in time. Therefore, if the reading of oneResultSetobject is interleaved with the reading of another, each must have been generated by differentStatementobjects. All statementexecutemethods implicitly close a statment's currentResultSetobject if an open one exists.- Version:
- $Revision: 1.4 $
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Field Summary
Fields Modifier and Type Field Description private java.sql.Connectionconnection_private java.sql.Statementdelegate_private booleanisOpen_private java.util.ListopenResultSets_
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Constructor Summary
Constructors Constructor Description StatementWrapper(java.sql.Statement statement)Create a new wrapper
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidaddBatch(java.lang.String sql)Adds an SQL command to the current batch of commmands for thisStatementobject.voidcancel()Cancels thisStatementobject if both the DBMS and driver support aborting an SQL statement.protected voidcheckIsOpen()Check to see if the connection is still openvoidclearBatch()Makes the set of commands in the current batch empty.voidclearWarnings()Clears all the warnings reported on thisStatementobject.voidclose()Releases thisStatementobject's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed.voidcloseOnCompletion()booleanexecute(java.lang.String sql)Executes an SQL statement that may return multiple results.booleanexecute(java.lang.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.booleanexecute(java.lang.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.booleanexecute(java.lang.String sql, java.lang.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()Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts.java.sql.ResultSetexecuteQuery(java.lang.String sql)Executes an SQL statement that returns a singleResultSetobject.intexecuteUpdate(java.lang.String sql)Executes an SQLINSERT,UPDATEorDELETEstatement.intexecuteUpdate(java.lang.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 thisStatementobject should be made available for retrieval.intexecuteUpdate(java.lang.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.intexecuteUpdate(java.lang.String sql, java.lang.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.java.sql.ConnectiongetConnection()Returns theConnectionobject that produced thisStatementobject.java.sql.StatementgetDelegate()Return the statement that is wrappedintgetFetchDirection()Retrieves the direction for fetching rows from database tables that is the default for result sets generated from thisStatementobject.intgetFetchSize()Retrieves the number of result set rows that is the default fetch size for result sets generated from thisStatementobject.java.sql.ResultSetgetGeneratedKeys()Retrieves any auto-generated keys created as a result of executing thisStatementobject.intgetMaxFieldSize()Returns the maximum number of bytes allowed for any column value.intgetMaxRows()Retrieves the maximum number of rows that aResultSetobject can contain.booleangetMoreResults()Moves to aStatementobject's next result.booleangetMoreResults(int current)Moves to thisStatementobject's next result, deals with any currentResultSetobject(s) according to the instructions specified by the given flag, and returnstrueif the next result is aResultSetobject.intgetQueryTimeout()Retrieves the number of seconds the driver will wait for aStatementobject to execute.java.sql.ResultSetgetResultSet()Returns the current result as aResultSetobject.intgetResultSetConcurrency()Retrieves the result set concurrency forResultSetobjects generated by thisStatementobject.intgetResultSetHoldability()Retrieves the result set holdability forResultSetobjects generated by thisStatementobject.intgetResultSetType()Retrieves the result set type forResultSetobjects generated by thisStatementobject.intgetUpdateCount()Returns the current result as an update count; if the result is aResultSetobject or there are no more results, -1 is returned.java.sql.SQLWarninggetWarnings()Retrieves the first warning reported by calls on thisStatementobject.booleanisClosed()Return true if this statement has been closedbooleanisCloseOnCompletion()booleanisPoolable()booleanisWrapperFor(java.lang.Class<?> iface)voidsetConnection(java.sql.Connection connection)Set the connection that created this statementvoidsetCursorName(java.lang.String name)Defines the SQL cursor name that will be used by subsequentStatementobjectexecutemethods.voidsetEscapeProcessing(boolean enable)Sets escape processing on or off.voidsetFetchDirection(int direction)Gives the driver a hint as to the direction in which the rows in a result set will be processed.voidsetFetchSize(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.voidsetMaxFieldSize(int max)Sets the limit for the maximum number of bytes in a column to the given number of bytes.voidsetMaxRows(int max)Sets the limit for the maximum number of rows that anyResultSetobject can contain to the given number.voidsetPoolable(boolean poolable)voidsetQueryTimeout(int seconds)Sets the number of seconds the driver will wait for aStatementobject to execute to the given number of seconds.<T> Tunwrap(java.lang.Class<T> iface)protected java.sql.ResultSetwrapResultSet(java.sql.ResultSet resultSet)Wrap the specified result set in a ResultSetWrapper object and return the wrapper.
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Method Detail
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setConnection
public final void setConnection(java.sql.Connection connection)
Set the connection that created this statement- Parameters:
connection- The connection
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setMaxFieldSize
public final void setMaxFieldSize(int max) throws java.sql.SQLExceptionSets the limit for the maximum number of bytes in a column to the given number of bytes. This is the maximum number of bytes that can be returned for any column value. This limit applies only toBINARY,VARBINARY,LONGVARBINARY,CHAR,VARCHAR, andLONGVARCHARfields. If the limit is exceeded, the excess data is silently discarded. For maximum portability, use values greater than 256.- Specified by:
setMaxFieldSizein interfacejava.sql.Statement- Parameters:
max- the new max column size limit; zero means unlimited- Throws:
java.sql.SQLException- if a database access error occurs
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setMaxRows
public final void setMaxRows(int max) throws java.sql.SQLExceptionSets the limit for the maximum number of rows that anyResultSetobject can contain to the given number. If the limit is exceeded, the excess rows are silently dropped.- Specified by:
setMaxRowsin interfacejava.sql.Statement- Parameters:
max- the new max rows limit; zero means unlimited- Throws:
java.sql.SQLException- if a database access error occurs
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setEscapeProcessing
public final void setEscapeProcessing(boolean enable) throws java.sql.SQLExceptionSets escape processing on or off. If escape scanning is on (the default), the driver will do escape substitution before sending the SQL to the database. Note: Since prepared statements have usually been parsed prior to making this call, disabling escape processing for prepared statements will have no effect.- Specified by:
setEscapeProcessingin interfacejava.sql.Statement- Parameters:
enable-trueto enable;falseto disable- Throws:
java.sql.SQLException- if a database access error occurs
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setQueryTimeout
public final void setQueryTimeout(int seconds) throws java.sql.SQLExceptionSets the number of seconds the driver will wait for aStatementobject to execute to the given number of seconds. If the limit is exceeded, anSQLExceptionis thrown.- Specified by:
setQueryTimeoutin interfacejava.sql.Statement- Parameters:
seconds- the new query timeout limit in seconds; zero means unlimited- Throws:
java.sql.SQLException- if a database access error occurs
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setCursorName
public final void setCursorName(java.lang.String name) throws java.sql.SQLExceptionDefines the SQL cursor name that will be used by subsequentStatementobjectexecutemethods. This name can then be used in SQL positioned update/delete statements to identify the current row in theResultSetobject generated by this statement. If the database doesn't support positioned update/delete, this method is a noop. To insure that a cursor has the proper isolation level to support updates, the cursor'sSELECTstatement should be of the form 'select for update ...'. If the 'for update' phrase is omitted, positioned updates may fail.Note: By definition, positioned update/delete execution must be done by a different
Statementobject than the one which generated theResultSetobject being used for positioning. Also, cursor names must be unique within a connection.- Specified by:
setCursorNamein interfacejava.sql.Statement- Parameters:
name- the new cursor name, which must be unique within a connection- Throws:
java.sql.SQLException- if a database access error occurs
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setFetchDirection
public final void setFetchDirection(int direction) throws java.sql.SQLExceptionGives the driver a hint as to the direction in which the rows in a result set will be processed. The hint applies only to result sets created using thisStatementobject. The default value isResultSet.FETCH_FORWARD.Note that this method sets the default fetch direction for result sets generated by this
Statementobject. Each result set has its own methods for getting and setting its own fetch direction.- Specified by:
setFetchDirectionin interfacejava.sql.Statement- Parameters:
direction- the initial direction for processing rows- Throws:
java.sql.SQLException- if a database access error occurs or the given direction is not one ofResultSet.FETCH_FORWARD,ResultSet.FETCH_REVERSE, orResultSet.FETCH_UNKNOWN- Since:
- 1.2
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setFetchSize
public final void setFetchSize(int rows) throws java.sql.SQLExceptionGives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed. The number of rows specified affects only result sets created using this statement. If the value specified is zero, then the hint is ignored. The default value is zero.- Specified by:
setFetchSizein interfacejava.sql.Statement- Parameters:
rows- the number of rows to fetch- Throws:
java.sql.SQLException- if a database access error occurs, or the condition 0 <= rows <= this.getMaxRows() is not satisfied.- Since:
- 1.2
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getDelegate
public final java.sql.Statement getDelegate()
Return the statement that is wrapped- Returns:
- The wrapped statement
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isClosed
public final boolean isClosed()
Return true if this statement has been closed- Specified by:
isClosedin interfacejava.sql.Statement- Returns:
- true if this statement has been closed
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getMaxFieldSize
public final int getMaxFieldSize() throws java.sql.SQLExceptionReturns the maximum number of bytes allowed for any column value. This limit is the maximum number of bytes that can be returned for any column value. The limit applies only toBINARY,VARBINARY,LONGVARBINARY,CHAR,VARCHAR, andLONGVARCHARcolumns. If the limit is exceeded, the excess data is silently discarded.- Specified by:
getMaxFieldSizein interfacejava.sql.Statement- Returns:
- the current max column size limit; zero means unlimited
- Throws:
java.sql.SQLException- if a database access error occurs
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getMaxRows
public final int getMaxRows() throws java.sql.SQLExceptionRetrieves the maximum number of rows that aResultSetobject can contain. If the limit is exceeded, the excess rows are silently dropped.- Specified by:
getMaxRowsin interfacejava.sql.Statement- Returns:
- the current max row limit; zero means unlimited
- Throws:
java.sql.SQLException- if a database access error occurs
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getQueryTimeout
public final int getQueryTimeout() throws java.sql.SQLExceptionRetrieves the number of seconds the driver will wait for aStatementobject to execute. If the limit is exceeded, aSQLExceptionis thrown.- Specified by:
getQueryTimeoutin interfacejava.sql.Statement- Returns:
- the current query timeout limit in seconds; zero means unlimited
- Throws:
java.sql.SQLException- if a database access error occurs
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getWarnings
public final java.sql.SQLWarning getWarnings() throws java.sql.SQLExceptionRetrieves the first warning reported by calls on thisStatementobject. SubsequentStatementobject warnings will be chained to thisSQLWarningobject.The warning chain is automatically cleared each time a statement is (re)executed.
Note: If you are processing a
ResultSetobject, any warnings associated with reads on thatResultSetobject will be chained on it.- Specified by:
getWarningsin interfacejava.sql.Statement- Returns:
- the first
SQLWarningobject ornull - Throws:
java.sql.SQLException- if a database access error occurs
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getResultSet
public final java.sql.ResultSet getResultSet() throws java.sql.SQLExceptionReturns the current result as aResultSetobject. This method should be called only once per result.- Specified by:
getResultSetin interfacejava.sql.Statement- Returns:
- the current result as a
ResultSetobject;nullif the result is an update count or there are no more results - Throws:
java.sql.SQLException- if a database access error occurs
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getUpdateCount
public final int getUpdateCount() throws java.sql.SQLExceptionReturns the current result as an update count; if the result is aResultSetobject or there are no more results, -1 is returned. This method should be called only once per result.- Specified by:
getUpdateCountin interfacejava.sql.Statement- Returns:
- the current result as an update count; -1 if the current result
is a
ResultSetobject or there are no more results - Throws:
java.sql.SQLException- if a database access error occurs
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getMoreResults
public final boolean getMoreResults() throws java.sql.SQLExceptionMoves to aStatementobject's next result. It returnstrueif this result is aResultSetobject. This method also implicitly closes any currentResultSetobject obtained with the methodgetResultSet.There are no more results when the following is true:
(!getMoreResults() && (getUpdateCount() == -1)- Specified by:
getMoreResultsin interfacejava.sql.Statement- Returns:
trueif the next result is aResultSetobject;falseif it is an update count or there are no more results- Throws:
java.sql.SQLException- if a database access error occurs
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getFetchDirection
public final int getFetchDirection() throws java.sql.SQLExceptionRetrieves the direction for fetching rows from database tables that is the default for result sets generated from thisStatementobject. If thisStatementobject has not set a fetch direction by calling the methodsetFetchDirection, the return value is implementation-specific.- Specified by:
getFetchDirectionin interfacejava.sql.Statement- Returns:
- the default fetch direction for result sets generated from this
Statementobject - Throws:
java.sql.SQLException- if a database access error occurs- Since:
- 1.2
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getFetchSize
public final int getFetchSize() throws java.sql.SQLExceptionRetrieves the number of result set rows that is the default fetch size for result sets generated from thisStatementobject. If thisStatementobject has not set a fetch size by calling the methodsetFetchSize, the return value is implementation-specific.- Specified by:
getFetchSizein interfacejava.sql.Statement- Returns:
- the default fetch size for result sets generated from this
Statementobject - Throws:
java.sql.SQLException- if a database access error occurs- Since:
- 1.2
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getResultSetConcurrency
public final int getResultSetConcurrency() throws java.sql.SQLExceptionRetrieves the result set concurrency forResultSetobjects generated by thisStatementobject.- Specified by:
getResultSetConcurrencyin interfacejava.sql.Statement- Returns:
- either
ResultSet.CONCUR_READ_ONLYorResultSet.CONCUR_UPDATABLE - Throws:
java.sql.SQLException- If an error occurs- Since:
- 1.2
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getResultSetType
public final int getResultSetType() throws java.sql.SQLExceptionRetrieves the result set type forResultSetobjects generated by thisStatementobject.- Specified by:
getResultSetTypein interfacejava.sql.Statement- Returns:
- one of
ResultSet.TYPE_FORWARD_ONLY,ResultSet.TYPE_SCROLL_INSENSITIVE, orResultSet.TYPE_SCROLL_SENSITIVE - Throws:
java.sql.SQLException- If an error occurs- Since:
- 1.2
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getConnection
public final java.sql.Connection getConnection() throws java.sql.SQLExceptionReturns theConnectionobject that produced thisStatementobject.- Specified by:
getConnectionin interfacejava.sql.Statement- Returns:
- the connection that produced this statement
- Throws:
java.sql.SQLException- if a database access error occurs- Since:
- 1.2
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executeQuery
public final java.sql.ResultSet executeQuery(java.lang.String sql) throws java.sql.SQLExceptionExecutes an SQL statement that returns a singleResultSetobject.- Specified by:
executeQueryin interfacejava.sql.Statement- Parameters:
sql- typically this is a static SQLSELECTstatement- Returns:
- a
ResultSetobject that contains the data produced by the given query; nevernull - Throws:
java.sql.SQLException- if a database access error occurs
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executeUpdate
public final int executeUpdate(java.lang.String sql) throws java.sql.SQLExceptionExecutes an SQLINSERT,UPDATEorDELETEstatement. In addition, SQL statements that return nothing, such as SQL DDL statements, can be executed.- Specified by:
executeUpdatein interfacejava.sql.Statement- Parameters:
sql- an SQLINSERT,UPDATEorDELETEstatement or an SQL statement that returns nothing- Returns:
- either the row count for
INSERT,UPDATEorDELETEstatements, or 0 for SQL statements that return nothing - Throws:
java.sql.SQLException- if a database access error occurs
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close
public final void close() throws java.sql.SQLExceptionReleases thisStatementobject'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.Note: A
Statementobject is automatically closed when it is garbage collected. When aStatementobject is closed, its currentResultSetobject, if one exists, is also closed.- Specified by:
closein interfacejava.lang.AutoCloseable- Specified by:
closein interfacejava.sql.Statement- Throws:
java.sql.SQLException- if a database access error occurs
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cancel
public final void cancel() throws java.sql.SQLExceptionCancels thisStatementobject 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.- Specified by:
cancelin interfacejava.sql.Statement- Throws:
java.sql.SQLException- if a database access error occurs
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clearWarnings
public final void clearWarnings() throws java.sql.SQLExceptionClears all the warnings reported on thisStatementobject. After a call to this method, the methodgetWarningswill returnnulluntil a new warning is reported for thisStatementobject.- Specified by:
clearWarningsin interfacejava.sql.Statement- Throws:
java.sql.SQLException- if a database access error occurs
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execute
public final boolean execute(java.lang.String sql) throws java.sql.SQLExceptionExecutes an SQL statement that may return multiple results. 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 methodsexecute,getMoreResults,getResultSet, andgetUpdateCountlet you navigate through multiple results. Theexecutemethod executes an SQL statement and indicates the form of the first result. You can then use the methodsgetResultSetorgetUpdateCountto retrieve the result, andgetMoreResultsto move to any subsequent result(s).- Specified by:
executein interfacejava.sql.Statement- Parameters:
sql- any SQL statement- Returns:
trueif the next result is aResultSetobject;falseif it is an update count or there are no more results- Throws:
java.sql.SQLException- if a database access error occurs
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addBatch
public final void addBatch(java.lang.String sql) throws java.sql.SQLExceptionAdds an SQL command to the current batch of commmands for thisStatementobject. This method is optional.- Specified by:
addBatchin interfacejava.sql.Statement- Parameters:
sql- typically this is a static SQLINSERTorUPDATEstatement- Throws:
java.sql.SQLException- if a database access error occurs, or the driver does not support batch statements- Since:
- 1.2
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clearBatch
public final void clearBatch() throws java.sql.SQLExceptionMakes the set of commands in the current batch empty. This method is optional.- Specified by:
clearBatchin interfacejava.sql.Statement- Throws:
java.sql.SQLException- if a database access error occurs or the driver does not support batch statements- Since:
- 1.2
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executeBatch
public final int[] executeBatch() throws java.sql.SQLExceptionSubmits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts. Theintelements 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 methodexecuteBatchmay be one of the following:- 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
- A value of
-2-- indicates that the command was processed successfully but that the number of rows affected is unknownIf 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 methodBatchUpdateException.getUpdateCountswill contain as many elements as there are commands in the batch, and at least one of the elements will be the following: - A value of
-3-- indicates that the command failed to execute successfully and occurs only if a driver continues to process commands after a command fails
A driver is not required to implement this method. 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 proccess commands in a batch update after a
BatchUpdateExceptionobject has been thrown.- Specified by:
executeBatchin interfacejava.sql.Statement- 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:
java.sql.SQLException- if a database access error occurs or the driver does not support batch statements. Throws BatchUpdateException (a subclass ofSQLException) if one of the commands sent to the database fails to execute properly or attempts to return a result set.- Since:
- 1.3
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checkIsOpen
protected final void checkIsOpen() throws java.sql.SQLExceptionCheck to see if the connection is still open- Throws:
java.sql.SQLException- If an error occurs
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wrapResultSet
protected final java.sql.ResultSet wrapResultSet(java.sql.ResultSet resultSet)
Wrap the specified result set in a ResultSetWrapper object and return the wrapper.- Parameters:
resultSet- The object to be wrapped- Returns:
- The wrapper.
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getMoreResults
public boolean getMoreResults(int current) throws java.sql.SQLExceptionMoves to thisStatementobject's next result, deals with any currentResultSetobject(s) according to the instructions specified by the given flag, and returnstrueif the next result is aResultSetobject.There are no more results when the following is true:
(!getMoreResults() && (getUpdateCount() == -1)- Specified by:
getMoreResultsin interfacejava.sql.Statement- Parameters:
current- one of the followingStatementconstants indicating what should happen to currentResultSetobjects obtained using the methodgetResultSetCLOSE_CURRENT_RESULT,KEEP_CURRENT_RESULT, orCLOSE_ALL_RESULTS- Returns:
trueif the next result is aResultSetobject;falseif it is an update count or there are no more results- Throws:
java.sql.SQLException- if a database access error occurs- Since:
- 1.4
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getGeneratedKeys
public java.sql.ResultSet getGeneratedKeys() throws java.sql.SQLExceptionRetrieves any auto-generated keys created as a result of executing thisStatementobject. If thisStatementobject did not generate any keys, an emptyResultSetobject is returned.- Specified by:
getGeneratedKeysin interfacejava.sql.Statement- Returns:
- a
ResultSetobject containing the auto-generated key(s) generated by the execution of thisStatementobject - Throws:
java.sql.SQLException- if a database access error occurs- Since:
- java 1.4
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executeUpdate
public int executeUpdate(java.lang.String sql, int autoGeneratedKeys) throws java.sql.SQLExceptionExecutes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by thisStatementobject should be made available for retrieval.- Specified by:
executeUpdatein interfacejava.sql.Statement- Parameters:
sql- must be an SQLINSERT,UPDATEorDELETEstatement or an SQL statement that returns nothingautoGeneratedKeys- a flag indicating whether auto-generated keys should be made available for retrieval; one of the following constants:Statement.RETURN_GENERATED_KEYSStatement.NO_GENERATED_KEYS- Returns:
- either the row count for
INSERT,UPDATEorDELETEstatements, or0for SQL statements that return nothing - Throws:
java.sql.SQLException- if a database access error occurs, the given SQL statement returns aResultSetobject, or the given constant is not one of those allowed- Since:
- java 1.4
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executeUpdate
public int executeUpdate(java.lang.String sql, int[] columnIndexes) throws java.sql.SQLExceptionExecutes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. The driver will ignore the array if the SQL statement is not anINSERTstatement.- Specified by:
executeUpdatein interfacejava.sql.Statement- Parameters:
sql- an SQLINSERT,UPDATEorDELETEstatement or an SQL statement that returns nothing, such as an SQL DDL statementcolumnIndexes- an array of column indexes indicating the columns that should be returned from the inserted row- Returns:
- either the row count for
INSERT,UPDATE, orDELETEstatements, or 0 for SQL statements that return nothing - Throws:
java.sql.SQLException- if a database access error occurs or the SQL statement returns aResultSetobject- Since:
- java 1.4
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executeUpdate
public int executeUpdate(java.lang.String sql, java.lang.String[] columnNames) throws java.sql.SQLExceptionExecutes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. The driver will ignore the array if the SQL statement is not anINSERTstatement.- Specified by:
executeUpdatein interfacejava.sql.Statement- Parameters:
sql- an SQLINSERT,UPDATEorDELETEstatement or an SQL statement that returns nothingcolumnNames- an array of the names of the columns that should be returned from the inserted row- Returns:
- either the row count for
INSERT,UPDATE, orDELETEstatements, or 0 for SQL statements that return nothing - Throws:
java.sql.SQLException- if a database access error occurs- Since:
- java 1.4
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execute
public boolean execute(java.lang.String sql, int autoGeneratedKeys) throws java.sql.SQLExceptionExecutes the given SQL statement, which may return multiple results, and signals the driver that any auto-generated keys should be made available for retrieval. The driver will ignore this signal if the SQL statement is not anINSERTstatement.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
executemethod executes an SQL statement and indicates the form of the first result. You must then use the methodsgetResultSetorgetUpdateCountto retrieve the result, andgetMoreResultsto move to any subsequent result(s).- Specified by:
executein interfacejava.sql.Statement- Parameters:
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_KEYSorStatement.NO_GENERATED_KEYS- Returns:
trueif the first result is aResultSetobject;falseif it is an update count or there are no results- Throws:
java.sql.SQLException- if a database access error occurs- Since:
- java 1.4
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execute
public boolean execute(java.lang.String sql, int[] columnIndexes) throws java.sql.SQLExceptionExecutes 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. This array contains the indexes of the columns in the target table that contain the auto-generated keys that should be made available. The driver will ignore the array if the given SQL statement is not anINSERTstatement.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
executemethod executes an SQL statement and indicates the form of the first result. You must then use the methodsgetResultSetorgetUpdateCountto retrieve the result, andgetMoreResultsto move to any subsequent result(s).- Specified by:
executein interfacejava.sql.Statement- Parameters:
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 methodgetGeneratedKeys- Returns:
trueif the first result is aResultSetobject;falseif it is an update count or there are no results- Throws:
java.sql.SQLException- if a database access error occurs- Since:
- java 1.4
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execute
public boolean execute(java.lang.String sql, java.lang.String[] columnNames) throws java.sql.SQLExceptionExecutes 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. This array contains the names of the columns in the target table that contain the auto-generated keys that should be made available. The driver will ignore the array if the given SQL statement is not anINSERTstatement.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
executemethod executes an SQL statement and indicates the form of the first result. You must then use the methodsgetResultSetorgetUpdateCountto retrieve the result, andgetMoreResultsto move to any subsequent result(s).- Specified by:
executein interfacejava.sql.Statement- Parameters:
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 methodgetGeneratedKeys- Returns:
trueif the next result is aResultSetobject;falseif it is an update count or there are no more results- Throws:
java.sql.SQLException- if a database access error occurs- Since:
- java 1.4
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getResultSetHoldability
public int getResultSetHoldability() throws java.sql.SQLExceptionRetrieves the result set holdability forResultSetobjects generated by thisStatementobject.- Specified by:
getResultSetHoldabilityin interfacejava.sql.Statement- Returns:
- either
ResultSet.HOLD_CURSORS_OVER_COMMITorResultSet.CLOSE_CURSORS_AT_COMMIT - Throws:
java.sql.SQLException- if a database access error occurs- Since:
- java 1.4
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isCloseOnCompletion
public boolean isCloseOnCompletion() throws java.sql.SQLException- Specified by:
isCloseOnCompletionin interfacejava.sql.Statement- Throws:
java.sql.SQLException
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closeOnCompletion
public void closeOnCompletion() throws java.sql.SQLException- Specified by:
closeOnCompletionin interfacejava.sql.Statement- Throws:
java.sql.SQLException
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isPoolable
public boolean isPoolable() throws java.sql.SQLException- Specified by:
isPoolablein interfacejava.sql.Statement- Throws:
java.sql.SQLException
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setPoolable
public void setPoolable(boolean poolable) throws java.sql.SQLException- Specified by:
setPoolablein interfacejava.sql.Statement- Throws:
java.sql.SQLException
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isWrapperFor
public boolean isWrapperFor(java.lang.Class<?> iface) throws java.sql.SQLException- Specified by:
isWrapperForin interfacejava.sql.Wrapper- Throws:
java.sql.SQLException
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unwrap
public <T> T unwrap(java.lang.Class<T> iface) throws java.sql.SQLException- Specified by:
unwrapin interfacejava.sql.Wrapper- Throws:
java.sql.SQLException
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