public class TestDBConnection extends Object implements Connection
1) Commits are blithely ignored 2) prepareStatement calls keep their string available
TRANSACTION_NONE, TRANSACTION_READ_COMMITTED, TRANSACTION_READ_UNCOMMITTED, TRANSACTION_REPEATABLE_READ, TRANSACTION_SERIALIZABLE
Constructor and Description |
---|
TestDBConnection(Connection conn) |
Modifier and Type | Method and Description |
---|---|
void |
abort(Executor executor) |
void |
clearWarnings()
Clears all warnings reported for this
Connection object. |
void |
close()
Releases this
Connection object's database and JDBC resources immediately instead of waiting for
them to be automatically released. |
void |
commit()
Makes all changes made since the previous commit/rollback permanent and releases any database locks currently
held by this
Connection object. |
Array |
createArrayOf(String typeName,
Object[] elements) |
Blob |
createBlob() |
Clob |
createClob() |
NClob |
createNClob() |
SQLXML |
createSQLXML() |
Statement |
createStatement()
Creates a
Statement object for sending SQL statements to the database. |
Statement |
createStatement(int resultSetType,
int resultSetConcurrency)
Creates a
Statement object that will generate ResultSet objects with the given type and
concurrency. |
Statement |
createStatement(int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
Creates a
Statement object that will generate ResultSet objects with the given type,
concurrency, and holdability. |
Struct |
createStruct(String typeName,
Object[] attributes) |
boolean |
getAutoCommit()
Retrieves the current auto-commit mode for this
Connection object. |
String |
getCatalog()
Retrieves this
Connection object's current catalog name. |
Properties |
getClientInfo() |
String |
getClientInfo(String name) |
int |
getHoldability()
Retrieves the current holdability of
ResultSet objects created using this Connection
object. |
DatabaseMetaData |
getMetaData()
Retrieves a
DatabaseMetaData object that contains metadata about the database to which this
Connection object represents a connection. |
int |
getNetworkTimeout() |
String |
getSchema() |
int |
getTransactionIsolation()
Retrieves this
Connection object's current transaction isolation level. |
Map<String,Class<?>> |
getTypeMap()
Retrieves the
Map object associated with this Connection object. |
SQLWarning |
getWarnings()
Retrieves the first warning reported by calls on this
Connection object. |
boolean |
isClosed()
Retrieves whether this
Connection object has been closed. |
boolean |
isReadOnly()
Retrieves whether this
Connection object is in read-only mode. |
boolean |
isValid(int timeout) |
boolean |
isWrapperFor(Class<?> iface) |
String |
nativeSQL(String sql)
Converts the given SQL statement into the system's native SQL grammar.
|
CallableStatement |
prepareCall(String sql)
Creates a
CallableStatement object for calling database stored procedures. |
CallableStatement |
prepareCall(String sql,
int resultSetType,
int resultSetConcurrency)
Creates a
CallableStatement object that will generate ResultSet objects with the given
type and concurrency. |
CallableStatement |
prepareCall(String sql,
int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
Creates a
CallableStatement object that will generate ResultSet objects with the given
type and concurrency. |
PreparedStatement |
prepareStatement(String sql)
Creates a
PreparedStatement object for sending parameterized SQL statements to the database. |
PreparedStatement |
prepareStatement(String sql,
int autoGeneratedKeys)
Creates a default
PreparedStatement object that has the capability to retrieve auto-generated keys. |
PreparedStatement |
prepareStatement(String sql,
int[] columnIndexes)
Creates a default
PreparedStatement object capable of returning the auto-generated keys designated
by the given array. |
PreparedStatement |
prepareStatement(String sql,
int resultSetType,
int resultSetConcurrency)
Creates a
PreparedStatement object that will generate ResultSet objects with the given
type and concurrency. |
PreparedStatement |
prepareStatement(String sql,
int resultSetType,
int resultSetConcurrency,
int resultSetHoldability)
Creates a
PreparedStatement object that will generate ResultSet objects with the given
type, concurrency, and holdability. |
PreparedStatement |
prepareStatement(String sql,
String[] columnNames)
Creates a default
PreparedStatement object capable of returning the auto-generated keys designated
by the given array. |
void |
releaseSavepoint(Savepoint savepoint)
Removes the given
Savepoint object from the current transaction. |
void |
rollback()
Undoes all changes made in the current transaction and releases any database locks currently held by this
Connection object. |
void |
rollback(Savepoint savepoint)
Undoes all changes made after the given
Savepoint object was set. |
void |
setAutoCommit(boolean autoCommit)
Sets this connection's auto-commit mode to the given state.
|
void |
setCatalog(String catalog)
Sets the given catalog name in order to select a subspace of this
Connection object's database in
which to work. |
void |
setClientInfo(Properties properties) |
void |
setClientInfo(String name,
String value) |
void |
setHoldability(int holdability)
Changes the holdability of
ResultSet objects created using this Connection object to
the given holdability. |
void |
setNetworkTimeout(Executor executor,
int milliseconds) |
void |
setReadOnly(boolean readOnly)
Puts this connection in read-only mode as a hint to the driver to enable database optimizations.
|
Savepoint |
setSavepoint()
Creates an unnamed savepoint in the current transaction and returns the new
Savepoint object that
represents it. |
Savepoint |
setSavepoint(String name)
Creates a savepoint with the given name in the current transaction and returns the new
Savepoint
object that represents it. |
void |
setSchema(String schema) |
void |
setTransactionIsolation(int level)
Attempts to change the transaction isolation level for this
Connection object to the one given. |
void |
setTypeMap(Map<String,Class<?>> map)
Installs the given
TypeMap object as the type map for this Connection object. |
String |
toString() |
<T> T |
unwrap(Class<T> iface) |
public TestDBConnection(Connection conn)
public Statement createStatement() throws SQLException
Statement
object for sending SQL statements to the database. SQL statements without
parameters are normally executed using Statement
objects. If the same SQL statement is executed many
times, it may be more efficient to use a PreparedStatement
object.
Result sets created using the returned Statement
object will by default be type
TYPE_FORWARD_ONLY
and have a concurrency level of CONCUR_READ_ONLY
.
createStatement
in interface Connection
Statement
objectSQLException
- if a database access error occurspublic PreparedStatement prepareStatement(String sql) throws SQLException
PreparedStatement
object for sending parameterized SQL statements to the database.
A SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement
object. This object can then be used to efficiently execute this statement multiple times.
Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If
the driver supports precompilation, the method prepareStatement
will send the statement to the
database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be
sent to the database until the PreparedStatement
object is executed. This has no direct effect on
users; however, it does affect which methods throw certain SQLException
objects.
Result sets created using the returned PreparedStatement
object will by default be type
TYPE_FORWARD_ONLY
and have a concurrency level of CONCUR_READ_ONLY
.
prepareStatement
in interface Connection
sql
- an SQL statement that may contain one or more '?' IN parameter placeholdersPreparedStatement
object containing the pre-compiled SQL statementSQLException
- if a database access error occurspublic CallableStatement prepareCall(String sql) throws SQLException
CallableStatement
object for calling database stored procedures. The
CallableStatement
object provides methods for setting up its IN and OUT parameters, and methods for
executing the call to a stored procedure.
Note: This method is optimized for handling stored procedure call statements. Some drivers may send the
call statement to the database when the method prepareCall
is done; others may wait until the
CallableStatement
object is executed. This has no direct effect on users; however, it does affect
which method throws certain SQLExceptions.
Result sets created using the returned CallableStatement
object will by default be type
TYPE_FORWARD_ONLY
and have a concurrency level of CONCUR_READ_ONLY
.
prepareCall
in interface Connection
sql
- an SQL statement that may contain one or more '?' parameter placeholders. Typically this statement is
a JDBC function call escape string.CallableStatement
object containing the pre-compiled SQL statementSQLException
- if a database access error occurspublic String nativeSQL(String sql) throws SQLException
nativeSQL
in interface Connection
sql
- an SQL statement that may contain one or more '?' parameter placeholdersSQLException
- if a database access error occurspublic void setAutoCommit(boolean autoCommit) throws SQLException
commit
or the method
rollback
. By default, new connections are in auto-commit mode.
The commit occurs when the statement completes or the next execute occurs, whichever comes first. In the case of
statements returning a ResultSet
object, the statement completes when the last row of the
ResultSet
object has been retrieved or the ResultSet
object has been closed. In
advanced cases, a single statement may return multiple results as well as output parameter values. In these
cases, the commit occurs when all results and output parameter values have been retrieved.
NOTE: If this method is called during a transaction, the transaction is committed.
setAutoCommit
in interface Connection
autoCommit
- true
to enable auto-commit mode; false
to disable itSQLException
- if a database access error occursgetAutoCommit()
public boolean getAutoCommit() throws SQLException
Connection
object.getAutoCommit
in interface Connection
Connection
object's auto-commit modeSQLException
- if a database access error occurssetAutoCommit(boolean)
public void commit() throws SQLException
Connection
object. This method should be used only when auto-commit mode has been
disabled.
In the TestDBConnection 'implementation', commit is ignored, but the savepoints are still forgotten locally -- we will still be able to roll back the entire test.
commit
in interface Connection
SQLException
- if a database access error occurs or this Connection
object is in auto-commit
modesetAutoCommit(boolean)
public void rollback() throws SQLException
Connection
object. This method should be used only when auto-commit mode has been disabled.rollback
in interface Connection
SQLException
- if a database access error occurs or this Connection
object is in auto-commit
modesetAutoCommit(boolean)
public void close() throws SQLException
Connection
object's database and JDBC resources immediately instead of waiting for
them to be automatically released.
Calling the method close
on a Connection
object that is already closed is a no-op.
Note: A Connection
object is automatically closed when it is garbage collected. Certain fatal
errors also close a Connection
object.
close
in interface AutoCloseable
close
in interface Connection
SQLException
- if a database access error occurspublic boolean isClosed() throws SQLException
Connection
object has been closed. A connection is closed if the method
close
has been called on it or if certain fatal errors have occurred. This method is guaranteed to
return true
only when it is called after the method Connection.close
has been called.
This method generally cannot be called to determine whether a connection to a database is valid or invalid. A typical client can determine that a connection is invalid by catching any exceptions that might be thrown when an operation is attempted.
isClosed
in interface Connection
true
if this Connection
object is closed; false
if it is still
openSQLException
- if a database access error occurspublic DatabaseMetaData getMetaData() throws SQLException
DatabaseMetaData
object that contains metadata about the database to which this
Connection
object represents a connection. The metadata includes information about the database's
tables, its supported SQL grammar, its stored procedures, the capabilities of this connection, and so on.getMetaData
in interface Connection
DatabaseMetaData
object for this Connection
objectSQLException
- if a database access error occurspublic void setReadOnly(boolean readOnly) throws SQLException
Note: This method cannot be called during a transaction.
setReadOnly
in interface Connection
readOnly
- true
enables read-only mode; false
disables itSQLException
- if a database access error occurs or this method is called during a transactionpublic boolean isReadOnly() throws SQLException
Connection
object is in read-only mode.isReadOnly
in interface Connection
true
if this Connection
object is read-only; false
otherwiseSQLException
- if a database access error occurspublic void setCatalog(String catalog) throws SQLException
Connection
object's database in
which to work.
If the driver does not support catalogs, it will silently ignore this request.
setCatalog
in interface Connection
catalog
- the name of a catalog (subspace in this Connection
object's database) in which to
workSQLException
- if a database access error occursgetCatalog()
public String getCatalog() throws SQLException
Connection
object's current catalog name.getCatalog
in interface Connection
null
if there is noneSQLException
- if a database access error occurssetCatalog(java.lang.String)
public void setTransactionIsolation(int level) throws SQLException
Connection
object to the one given. The
constants defined in the interface Connection
are the possible transaction isolation levels.
Note: If this method is called during a transaction, the result is implementation-defined.
setTransactionIsolation
in interface Connection
level
- one of the following Connection
constants:
Connection.TRANSACTION_READ_UNCOMMITTED
, Connection.TRANSACTION_READ_COMMITTED
,
Connection.TRANSACTION_REPEATABLE_READ
, or Connection.TRANSACTION_SERIALIZABLE
. (Note
that Connection.TRANSACTION_NONE
cannot be used because it specifies that transactions are not
supported.)SQLException
- if a database access error occurs or the given parameter is not one of the
Connection
constantsDatabaseMetaData.supportsTransactionIsolationLevel(int)
,
getTransactionIsolation()
public int getTransactionIsolation() throws SQLException
Connection
object's current transaction isolation level.getTransactionIsolation
in interface Connection
Connection.TRANSACTION_READ_UNCOMMITTED
, Connection.TRANSACTION_READ_COMMITTED
,
Connection.TRANSACTION_REPEATABLE_READ
, Connection.TRANSACTION_SERIALIZABLE
, or
Connection.TRANSACTION_NONE
.SQLException
- if a database access error occurssetTransactionIsolation(int)
public SQLWarning getWarnings() throws SQLException
Connection
object. If there is more than one
warning, subsequent warnings will be chained to the first one and can be retrieved by calling the method
SQLWarning.getNextWarning
on the warning that was retrieved previously.
This method may not be called on a closed connection; doing so will cause an SQLException
to be
thrown.
Note: Subsequent warnings will be chained to this SQLWarning.
getWarnings
in interface Connection
SQLWarning
object or null
if there are noneSQLException
- if a database access error occurs or this method is called on a closed connectionSQLWarning
public void clearWarnings() throws SQLException
Connection
object. After a call to this method, the method
getWarnings
returns null
until a new warning is reported for this
Connection
object.clearWarnings
in interface Connection
SQLException
- if a database access error occurspublic Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException
Statement
object that will generate ResultSet
objects with the given type and
concurrency. This method is the same as the createStatement
method above, but it allows the default
result set type and concurrency to be overridden.createStatement
in interface Connection
resultSetType
- a result set type; one of 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
Statement
object that will generate ResultSet
objects with the given type
and concurrencySQLException
- if a database access error occurs or the given parameters are not ResultSet
constants indicating type and concurrencypublic PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException
PreparedStatement
object that will generate ResultSet
objects with the given
type and concurrency. This method is the same as the prepareStatement
method above, but it allows
the default result set type and concurrency to be overridden.prepareStatement
in interface Connection
sql
- a String
object that is the SQL statement to be sent to the database; may contain one or
more ? IN parametersresultSetType
- a result set type; one of 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
ResultSet
objects with the given type and concurrencySQLException
- if a database access error occurs or the given parameters are not ResultSet
constants indicating type and concurrencypublic CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException
CallableStatement
object that will generate ResultSet
objects with the given
type and concurrency. This method is the same as the prepareCall
method above, but it allows the
default result set type and concurrency to be overridden.prepareCall
in interface Connection
sql
- a String
object that is the SQL statement to be sent to the database; may contain on or
more ? parametersresultSetType
- a result set type; one of 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
CallableStatement
object containing the pre-compiled SQL statement that will produce
ResultSet
objects with the given type and concurrencySQLException
- if a database access error occurs or the given parameters are not ResultSet
constants indicating type and concurrencypublic Map<String,Class<?>> getTypeMap() throws SQLException
Map
object associated with this Connection
object. Unless the application
has added an entry, the type map returned will be empty.getTypeMap
in interface Connection
java.util.Map
object associated with this Connection
objectSQLException
- if a database access error occurssetTypeMap(java.util.Map<java.lang.String, java.lang.Class<?>>)
public void setTypeMap(Map<String,Class<?>> map) throws SQLException
TypeMap
object as the type map for this Connection
object. The type
map will be used for the custom mapping of SQL structured types and distinct types.setTypeMap
in interface Connection
map
- the java.util.Map
object to install as the replacement for this Connection
object's default type mapSQLException
- if a database access error occurs or the given parameter is not a java.util.Map
objectgetTypeMap()
public void setHoldability(int holdability) throws SQLException
ResultSet
objects created using this Connection
object to
the given holdability.setHoldability
in interface Connection
holdability
- a ResultSet
holdability constant; one of
ResultSet.HOLD_CURSORS_OVER_COMMIT
or ResultSet.CLOSE_CURSORS_AT_COMMIT
SQLException
- if a database access occurs, the given parameter is not a ResultSet
constant
indicating holdability, or the given holdability is not supportedgetHoldability()
,
ResultSet
public int getHoldability() throws SQLException
ResultSet
objects created using this Connection
object.getHoldability
in interface Connection
ResultSet.HOLD_CURSORS_OVER_COMMIT
or
ResultSet.CLOSE_CURSORS_AT_COMMIT
SQLException
- if a database access occurssetHoldability(int)
,
ResultSet
public Savepoint setSavepoint() throws SQLException
Savepoint
object that
represents it.setSavepoint
in interface Connection
Savepoint
objectSQLException
- if a database access error occurs or this Connection
object is currently in
auto-commit modeSavepoint
public Savepoint setSavepoint(String name) throws SQLException
Savepoint
object that represents it.setSavepoint
in interface Connection
name
- a String
containing the name of the savepointSavepoint
objectSQLException
- if a database access error occurs or this Connection
object is currently in
auto-commit modeSavepoint
public void rollback(Savepoint savepoint) throws SQLException
Savepoint
object was set.
This method should be used only when auto-commit has been disabled.
rollback
in interface Connection
savepoint
- the Savepoint
object to roll back toSQLException
- if a database access error occurs, the Savepoint
object is no longer valid, or
this Connection
object is currently in auto-commit modeSavepoint
,
rollback()
public void releaseSavepoint(Savepoint savepoint) throws SQLException
Savepoint
object from the current transaction. Any reference to the savepoint
after it have been removed will cause an SQLException
to be thrown.releaseSavepoint
in interface Connection
savepoint
- the Savepoint
object to be removedSQLException
- if a database access error occurs or the given Savepoint
object is not a valid
savepoint in the current transactionpublic Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException
Statement
object that will generate ResultSet
objects with the given type,
concurrency, and holdability. This method is the same as the createStatement
method above, but it
allows the default result set type, concurrency, and holdability to be overridden.createStatement
in interface Connection
resultSetType
- one of the following ResultSet
constants:
ResultSet.TYPE_FORWARD_ONLY
, ResultSet.TYPE_SCROLL_INSENSITIVE
, or
ResultSet.TYPE_SCROLL_SENSITIVE
resultSetConcurrency
- one of the following ResultSet
constants:
ResultSet.CONCUR_READ_ONLY
or ResultSet.CONCUR_UPDATABLE
resultSetHoldability
- one of the following ResultSet
constants:
ResultSet.HOLD_CURSORS_OVER_COMMIT
or ResultSet.CLOSE_CURSORS_AT_COMMIT
Statement
object that will generate ResultSet
objects with the given
type, concurrency, and holdabilitySQLException
- if a database access error occurs or the given parameters are not ResultSet
constants indicating type, concurrency, and holdabilityResultSet
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException
PreparedStatement
object that will generate ResultSet
objects with the given
type, concurrency, and holdability.
This method is the same as the prepareStatement
method above, but it allows the default result set
type, concurrency, and holdability to be overridden.
prepareStatement
in interface Connection
sql
- a String
object that is the SQL statement to be sent to the database; may contain one or
more ? IN parametersresultSetType
- one of the following ResultSet
constants:
ResultSet.TYPE_FORWARD_ONLY
, ResultSet.TYPE_SCROLL_INSENSITIVE
, or
ResultSet.TYPE_SCROLL_SENSITIVE
resultSetConcurrency
- one of the following ResultSet
constants:
ResultSet.CONCUR_READ_ONLY
or ResultSet.CONCUR_UPDATABLE
resultSetHoldability
- one of the following ResultSet
constants:
ResultSet.HOLD_CURSORS_OVER_COMMIT
or ResultSet.CLOSE_CURSORS_AT_COMMIT
PreparedStatement
object, containing the pre-compiled SQL statement, that will
generate ResultSet
objects with the given type, concurrency, and holdabilitySQLException
- if a database access error occurs or the given parameters are not ResultSet
constants indicating type, concurrency, and holdabilityResultSet
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException
CallableStatement
object that will generate ResultSet
objects with the given
type and concurrency. This method is the same as the prepareCall
method above, but it allows the
default result set type, result set concurrency type and holdability to be overridden.prepareCall
in interface Connection
sql
- a String
object that is the SQL statement to be sent to the database; may contain on or
more ? parametersresultSetType
- one of the following ResultSet
constants:
ResultSet.TYPE_FORWARD_ONLY
, ResultSet.TYPE_SCROLL_INSENSITIVE
, or
ResultSet.TYPE_SCROLL_SENSITIVE
resultSetConcurrency
- one of the following ResultSet
constants:
ResultSet.CONCUR_READ_ONLY
or ResultSet.CONCUR_UPDATABLE
resultSetHoldability
- one of the following ResultSet
constants:
ResultSet.HOLD_CURSORS_OVER_COMMIT
or ResultSet.CLOSE_CURSORS_AT_COMMIT
CallableStatement
object, containing the pre-compiled SQL statement, that will
generate ResultSet
objects with the given type, concurrency, and holdabilitySQLException
- if a database access error occurs or the given parameters are not ResultSet
constants indicating type, concurrency, and holdabilityResultSet
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException
PreparedStatement
object that has the capability to retrieve auto-generated keys.
The given constant tells the driver whether it should make auto-generated keys available for retrieval. This
parameter is ignored if the SQL statement is not an INSERT
statement.
Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If
the driver supports precompilation, the method prepareStatement
will send the statement to the
database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be
sent to the database until the PreparedStatement
object is executed. This has no direct effect on
users; however, it does affect which methods throw certain SQLExceptions.
Result sets created using the returned PreparedStatement
object will by default be type
TYPE_FORWARD_ONLY
and have a concurrency level of CONCUR_READ_ONLY
.
prepareStatement
in interface Connection
sql
- an SQL statement that may contain one or more '?' IN parameter placeholdersautoGeneratedKeys
- a flag indicating whether auto-generated keys should be returned; one of
Statement.RETURN_GENERATED_KEYS
or Statement.NO_GENERATED_KEYS
PreparedStatement
object, containing the pre-compiled SQL statement, that will have
the capability of returning auto-generated keysSQLException
- if a database access error occurs or the given parameter is not a Statement
constant indicating whether auto-generated keys should be returnedpublic PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException
PreparedStatement
object capable of returning the auto-generated keys designated
by the given array. This array contains the indexes of the columns in the target table that contain the
auto-generated keys that should be made available. This array is ignored if the SQL statement is not an
INSERT
statement.
An SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement
object. This object can then be used to efficiently execute this statement multiple times.
Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If
the driver supports precompilation, the method prepareStatement
will send the statement to the
database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be
sent to the database until the PreparedStatement
object is executed. This has no direct effect on
users; however, it does affect which methods throw certain SQLExceptions.
Result sets created using the returned PreparedStatement
object will by default be type
TYPE_FORWARD_ONLY
and have a concurrency level of CONCUR_READ_ONLY
.
prepareStatement
in interface Connection
sql
- an SQL statement that may contain one or more '?' IN parameter placeholderscolumnIndexes
- an array of column indexes indicating the columns that should be returned from the inserted
row or rowsPreparedStatement
object, containing the pre-compiled statement, that is capable of
returning the auto-generated keys designated by the given array of column indexesSQLException
- if a database access error occurspublic PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException
PreparedStatement
object capable of returning the auto-generated keys designated
by the given array. This array contains the names of the columns in the target table that contain the
auto-generated keys that should be returned. This array is ignored if the SQL statement is not an
INSERT
statement.
An SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement
object. This object can then be used to efficiently execute this statement multiple times.
Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If
the driver supports precompilation, the method prepareStatement
will send the statement to the
database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be
sent to the database until the PreparedStatement
object is executed. This has no direct effect on
users; however, it does affect which methods throw certain SQLExceptions.
Result sets created using the returned PreparedStatement
object will by default be type
TYPE_FORWARD_ONLY
and have a concurrency level of CONCUR_READ_ONLY
.
prepareStatement
in interface Connection
sql
- an SQL statement that may contain one or more '?' IN parameter placeholderscolumnNames
- an array of column names indicating the columns that should be returned from the inserted row
or rowsPreparedStatement
object, containing the pre-compiled statement, that is capable of
returning the auto-generated keys designated by the given array of column namesSQLException
- if a database access error occurspublic Array createArrayOf(String typeName, Object[] elements) throws SQLException
createArrayOf
in interface Connection
SQLException
public Blob createBlob() throws SQLException
createBlob
in interface Connection
SQLException
public Clob createClob() throws SQLException
createClob
in interface Connection
SQLException
public NClob createNClob() throws SQLException
createNClob
in interface Connection
SQLException
public SQLXML createSQLXML() throws SQLException
createSQLXML
in interface Connection
SQLException
public Struct createStruct(String typeName, Object[] attributes) throws SQLException
createStruct
in interface Connection
SQLException
public Properties getClientInfo() throws SQLException
getClientInfo
in interface Connection
SQLException
public String getClientInfo(String name) throws SQLException
getClientInfo
in interface Connection
SQLException
public boolean isValid(int timeout) throws SQLException
isValid
in interface Connection
SQLException
public void setClientInfo(Properties properties) throws SQLClientInfoException
setClientInfo
in interface Connection
SQLClientInfoException
public void setClientInfo(String name, String value) throws SQLClientInfoException
setClientInfo
in interface Connection
SQLClientInfoException
public boolean isWrapperFor(Class<?> iface) throws SQLException
isWrapperFor
in interface Wrapper
SQLException
public <T> T unwrap(Class<T> iface) throws SQLException
unwrap
in interface Wrapper
SQLException
public void setSchema(String schema) throws SQLException
setSchema
in interface Connection
SQLException
public String getSchema() throws SQLException
getSchema
in interface Connection
SQLException
public void abort(Executor executor) throws SQLException
abort
in interface Connection
SQLException
public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException
setNetworkTimeout
in interface Connection
SQLException
public int getNetworkTimeout() throws SQLException
getNetworkTimeout
in interface Connection
SQLException
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