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SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.jcreme.sql.WrappedStatement
org.jcreme.sql.WrappedPreparedStatement
This class enables to wrap an actual statement to provide a few extra services: tracing of the queries, handling of some exceptions (rollback, loss of connection). The ResultSets provided by this class are wrapped around the actual ResultSet.
Field Summary |
Fields inherited from class org.jcreme.sql.WrappedStatement |
baseQuery, batchRequests, realStatement, UNKNOWN_QUERY |
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 | |
WrappedPreparedStatement(java.sql.PreparedStatement preparedStatement,
java.lang.String sql)
Enables to wrap a PreparedStatement. |
Method Summary | |
void |
addBatch()
Adds a set of parameters to this PreparedStatement
object's batch of commands. |
protected java.lang.String |
buildActualQuery()
This method enables to substitute the parameters set in the statement in the baseQuery. |
void |
clearParameters()
Clears the current parameter values immediately. |
boolean |
execute()
Executes the SQL statement in this PreparedStatement
object, which may be any kind of SQL statement. |
java.sql.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 INSERT ,UPDATE
or DELETE statement; or an SQL statement that returns
nothing, such as a DDL statement. |
protected java.sql.SQLException |
generateException(java.sql.SQLException e)
This method enables to append a message to the original exception's message. |
protected java.lang.String |
getBatchRequestAt(int index)
This method enables to access the batched queries. |
java.sql.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.
|
java.sql.ParameterMetaData |
getParameterMetaData()
Retrieves the number, types and properties of this PreparedStatement object's parameters. |
void |
setArray(int i,
java.sql.Array x)
Sets the designated parameter to the given Array object.
|
void |
setAsciiStream(int parameterIndex,
java.io.InputStream x,
int length)
Sets the designated parameter to the given input stream, which will have the specified number of bytes. |
protected void |
setBaseQuery(java.lang.String sql)
This method enables to set the base query of the statement. |
void |
setBigDecimal(int parameterIndex,
java.math.BigDecimal x)
Sets the designated parameter to the given java.math.BigDecimal value. |
void |
setBinaryStream(int parameterIndex,
java.io.InputStream x,
int length)
Sets the designated parameter to the given input stream, which will have the specified number of bytes. |
void |
setBlob(int i,
java.sql.Blob x)
Sets the designated parameter to the given Blob object.
|
void |
setBoolean(int parameterIndex,
boolean x)
Sets the designated parameter to the given Java boolean
value. |
void |
setByte(int parameterIndex,
byte x)
Sets the designated parameter to the given Java byte
value. |
void |
setBytes(int parameterIndex,
byte[] x)
Sets the designated parameter to the given Java array of bytes. |
void |
setCharacterStream(int parameterIndex,
java.io.Reader reader,
int length)
Sets the designated parameter to the given Reader object,
which is the given number of characters long. |
void |
setClob(int i,
java.sql.Clob x)
Sets the designated parameter to the given Clob object.
|
void |
setDate(int parameterIndex,
java.sql.Date x)
Sets the designated parameter to the given java.sql.Date
value. |
void |
setDate(int parameterIndex,
java.sql.Date x,
java.util.Calendar cal)
Sets the designated parameter to the given java.sql.Date
value, using the given Calendar object. |
void |
setDouble(int parameterIndex,
double x)
Sets the designated parameter to the given Java double
value. |
void |
setFloat(int parameterIndex,
float x)
Sets the designated parameter to the given Java float
value. |
void |
setInt(int parameterIndex,
int x)
Sets the designated parameter to the given Java int value.
|
void |
setLong(int parameterIndex,
long x)
Sets the designated parameter to the given Java long
value. |
void |
setNull(int parameterIndex,
int sqlType)
Sets the designated parameter to SQL NULL .
|
void |
setNull(int paramIndex,
int sqlType,
java.lang.String typeName)
Sets the designated parameter to SQL NULL . |
void |
setObject(int parameterIndex,
java.lang.Object x)
Sets the value of the designated parameter using the given object. |
void |
setObject(int parameterIndex,
java.lang.Object x,
int targetSqlType)
Sets the value of the designated parameter with the given object. |
void |
setObject(int parameterIndex,
java.lang.Object x,
int targetSqlType,
int scale)
Sets the value of the designated parameter with the given object. |
void |
setRef(int i,
java.sql.Ref x)
Sets the designated parameter to the given REF(<structured-type>) value. |
void |
setShort(int parameterIndex,
short x)
Sets the designated parameter to the given Java short
value. |
void |
setString(int parameterIndex,
java.lang.String x)
Sets the designated parameter to the given Java String
value. |
void |
setTime(int parameterIndex,
java.sql.Time x)
Sets the designated parameter to the given java.sql.Time
value. |
void |
setTime(int parameterIndex,
java.sql.Time x,
java.util.Calendar cal)
Sets the designated parameter to the given java.sql.Time
value, using the given Calendar object. |
void |
setTimestamp(int parameterIndex,
java.sql.Timestamp x)
Sets the designated parameter to the given java.sql.Timestamp value. |
void |
setTimestamp(int parameterIndex,
java.sql.Timestamp x,
java.util.Calendar cal)
Sets the designated parameter to the given java.sql.Timestamp value, using the given
Calendar object. |
void |
setUnicodeStream(int parameterIndex,
java.io.InputStream x,
int length)
Deprecated. |
void |
setURL(int parameterIndex,
java.net.URL x)
Sets the designated parameter to the given java.net.URL
value. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.sql.Statement |
addBatch, cancel, clearBatch, clearWarnings, close, execute, execute, execute, execute, executeBatch, executeQuery, executeUpdate, executeUpdate, executeUpdate, executeUpdate, getConnection, getFetchDirection, getFetchSize, getGeneratedKeys, getMaxFieldSize, getMaxRows, getMoreResults, getMoreResults, getQueryTimeout, getResultSet, getResultSetConcurrency, getResultSetHoldability, getResultSetType, getUpdateCount, getWarnings, setCursorName, setEscapeProcessing, setFetchDirection, setFetchSize, setMaxFieldSize, setMaxRows, setQueryTimeout |
Constructor Detail |
public WrappedPreparedStatement(java.sql.PreparedStatement preparedStatement, java.lang.String sql) throws java.sql.SQLException
preparedStatement
- the statement to wrap.sql
- the query associated to the PreparedStatement.
java.sql.SQLException
- if the preparedStatement is null.Method Detail |
protected void setBaseQuery(java.lang.String sql) throws java.sql.SQLException
setBaseQuery
in class WrappedStatement
sql
- the sql query underlying the statement.
java.sql.SQLException
- if the query is null.protected java.lang.String buildActualQuery()
protected java.sql.SQLException generateException(java.sql.SQLException e)
generateException
in class WrappedStatement
e
- the original exception.
public java.sql.ResultSet executeQuery() throws java.sql.SQLException
PreparedStatement
object
and returns the ResultSet
object generated by the query.
executeQuery
in interface java.sql.PreparedStatement
ResultSet
object that contains the data produced
by the query; never null
java.sql.SQLException
- if a database access error occurs or the SQL statement
does not return a ResultSet
objectpublic int executeUpdate() throws java.sql.SQLException
PreparedStatement
object, which must be an SQL INSERT
,UPDATE
or DELETE
statement; or an SQL statement that returns
nothing, such as a DDL statement.
executeUpdate
in interface java.sql.PreparedStatement
INSERT
,
UPDATE
, or DELETE
statements or
(2) 0 for SQL statements that return nothing
java.sql.SQLException
- if a database access error occurs or the SQL statement
returns a ResultSet
objectpublic void setNull(int parameterIndex, int sqlType) throws java.sql.SQLException
NULL
.
Note: You must specify the parameter's SQL type.
setNull
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...sqlType
- the SQL type code defined in java.sql.Types
java.sql.SQLException
- if a database access error occurspublic void setBoolean(int parameterIndex, boolean x) throws java.sql.SQLException
boolean
value. The driver converts this to an SQL BIT
value when
it sends it to the database.
setBoolean
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setByte(int parameterIndex, byte x) throws java.sql.SQLException
byte
value. The driver converts this to an SQL TINYINT
value
when it sends it to the database.
setByte
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setShort(int parameterIndex, short x) throws java.sql.SQLException
short
value. The driver converts this to an SQL SMALLINT
value
when it sends it to the database.
setShort
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setInt(int parameterIndex, int x) throws java.sql.SQLException
int
value.
The driver converts this to an SQL INTEGER
value when it
sends it to the database.
setInt
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setLong(int parameterIndex, long x) throws java.sql.SQLException
long
value. The driver converts this to an SQL BIGINT
value
when it sends it to the database.
setLong
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setFloat(int parameterIndex, float x) throws java.sql.SQLException
float
value. The driver converts this to an SQL FLOAT
value when
it sends it to the database.
setFloat
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setDouble(int parameterIndex, double x) throws java.sql.SQLException
double
value. The driver converts this to an SQL DOUBLE
value
when it sends it to the database.
setDouble
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setBigDecimal(int parameterIndex, java.math.BigDecimal x) throws java.sql.SQLException
java.math.BigDecimal
value. The driver converts this to an
SQL NUMERIC
value when it sends it to the database.
setBigDecimal
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setString(int parameterIndex, java.lang.String x) throws java.sql.SQLException
String
value. The driver converts this to an SQL VARCHAR
or
LONGVARCHAR
value (depending on the argument's size
relative to the driver's limits on VARCHAR
values) when it
sends it to the database.
setString
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setBytes(int parameterIndex, byte[] x) throws java.sql.SQLException
VARBINARY
or
LONGVARBINARY
(depending on the argument's size relative
to the driver's limits on VARBINARY
values) when it sends
it to the database.
setBytes
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setDate(int parameterIndex, java.sql.Date x) throws java.sql.SQLException
java.sql.Date
value. The driver converts this to an SQL DATE
value when
it sends it to the database.
setDate
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setTime(int parameterIndex, java.sql.Time x) throws java.sql.SQLException
java.sql.Time
value. The driver converts this to an SQL TIME
value when
it sends it to the database.
setTime
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setTimestamp(int parameterIndex, java.sql.Timestamp x) throws java.sql.SQLException
java.sql.Timestamp
value. The driver converts this to an
SQL TIMESTAMP
value when it sends it to the database.
setTimestamp
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter value
java.sql.SQLException
- if a database access error occurspublic void setAsciiStream(int parameterIndex, java.io.InputStream x, int length) throws java.sql.SQLException
LONGVARCHAR
parameter, it may be more practical to send
it via a java.io.InputStream
. Data will be read from the
stream as needed until end-of-file is reached. The JDBC driver will do
any necessary conversion from ASCII to the database char format.
Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.
setAsciiStream
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the Java input stream that contains the ASCII parameter valuelength
- the number of bytes in the stream
java.sql.SQLException
- if a database access error occurspublic void setUnicodeStream(int parameterIndex, java.io.InputStream x, int length) throws java.sql.SQLException
LONGVARCHAR
parameter, it may be more practical to send it via a
java.io.InputStream
object. The data will be read from the
stream as needed until end-of-file is reached. The JDBC driver will do
any necessary conversion from Unicode to the database char format.
Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.
setUnicodeStream
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- a java.io.InputStream
object that contains the
Unicode parameter value as two-byte Unicode characterslength
- the number of bytes in the stream
java.sql.SQLException
- if a database access error occurspublic void setBinaryStream(int parameterIndex, java.io.InputStream x, int length) throws java.sql.SQLException
LONGVARBINARY
parameter, it may be more practical to
send it via a java.io.InputStream
object. The data will be
read from the stream as needed until end-of-file is reached.
Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.
setBinaryStream
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the java input stream which contains the binary parameter
valuelength
- the number of bytes in the stream
java.sql.SQLException
- if a database access error occurspublic void clearParameters() throws java.sql.SQLException
In general, parameter values remain in force for repeated use of a
statement. Setting a parameter value automatically clears its previous
value. However, in some cases it is useful to immediately release the
resources used by the current parameter values; this can be done by
calling the method clearParameters
.
clearParameters
in interface java.sql.PreparedStatement
java.sql.SQLException
- if a database access error occurspublic void setObject(int parameterIndex, java.lang.Object x, int targetSqlType, int scale) throws java.sql.SQLException
Sets the value of the designated parameter with the given object. The
second argument must be an object type; for integral values, the
java.lang
equivalent objects should be used.
The given Java object will be converted to the given targetSqlType before
being sent to the database.
If the object has a custom mapping (is of a class implementing the
interface SQLData
), the JDBC driver should call the
method SQLData.writeSQL
to write it to the SQL data
stream. If, on the other hand, the object is of a class implementing
Ref
,Blob
,Clob
,
Struct
, or Array
, the driver should pass
it to the database as a value of the corresponding SQL type.
Note that this method may be used to pass database-specific abstract data types.
setObject
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the object containing the input parameter valuetargetSqlType
- the SQL type (as defined in java.sql.Types) to be sent to the
database. The scale argument may further qualify this type.scale
- for java.sql.Types.DECIMAL or java.sql.Types.NUMERIC types,
this is the number of digits after the decimal point. For all
other types, this value will be ignored.
java.sql.SQLException
- if a database access error occurspublic void setObject(int parameterIndex, java.lang.Object x, int targetSqlType) throws java.sql.SQLException
setObject
above, except that it
assumes a scale of zero.
setObject
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the object containing the input parameter valuetargetSqlType
- the SQL type (as defined in java.sql.Types) to be sent to the
database
java.sql.SQLException
- if a database access error occurspublic void setObject(int parameterIndex, java.lang.Object x) throws java.sql.SQLException
Sets the value of the designated parameter using the given object. The
second parameter must be of type Object
; therefore, the
java.lang
equivalent objects should be used for built-in
types.
The JDBC specification specifies a standard mapping from Java
Object
types to SQL types. The given argument will be
converted to the corresponding SQL type before being sent to the
database.
Note that this method may be used to pass datatabase- specific abstract
data types, by using a driver-specific Java type.
If the object is of a class implementing the interface
SQLData
, the JDBC driver should call the method
SQLData.writeSQL
to write it to the SQL data stream. If,
on the other hand, the object is of a class implementing Ref
,
Blob
,Clob
,Struct
, or
Array
, the driver should pass it to the database as a
value of the corresponding SQL type.
This method throws an exception if there is an ambiguity, for example, if the object is of a class implementing more than one of the interfaces named above.
setObject
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the object containing the input parameter value
java.sql.SQLException
- if a database access error occurs or the type of the given
object is ambiguouspublic boolean execute() throws java.sql.SQLException
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).
execute
in interface java.sql.PreparedStatement
true
if the first result is a
ResultSet
object; false
if the
first result is an update count or there is no result
java.sql.SQLException
- if a database access error occurs or an argument is
supplied to this methodpublic void addBatch() throws java.sql.SQLException
PreparedStatement
object's batch of commands.
addBatch
in interface java.sql.PreparedStatement
java.sql.SQLException
- if a database access error occursStatement.addBatch(java.lang.String)
protected java.lang.String getBatchRequestAt(int index)
getBatchRequestAt
in class WrappedStatement
index
- the index of the batch request.
public void setCharacterStream(int parameterIndex, java.io.Reader reader, int length) throws java.sql.SQLException
Reader
object,
which is the given number of characters long. When a very large UNICODE
value is input to a LONGVARCHAR
parameter, it may be more
practical to send it via a java.io.Reader
object. The data
will be read from the stream as needed until end-of-file is reached. The
JDBC driver will do any necessary conversion from UNICODE to the database
char format.
Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.
setCharacterStream
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...reader
- the java.io.Reader
object that contains the
Unicode datalength
- the number of characters in the stream
java.sql.SQLException
- if a database access error occurspublic void setRef(int i, java.sql.Ref x) throws java.sql.SQLException
REF(<structured-type>)
value. The driver converts
this to an SQL REF
value when it sends it to the database.
setRef
in interface java.sql.PreparedStatement
i
- the first parameter is 1, the second is 2, ...x
- an SQL REF
value
java.sql.SQLException
- if a database access error occurspublic void setBlob(int i, java.sql.Blob x) throws java.sql.SQLException
Blob
object.
The driver converts this to an SQL BLOB
value when it
sends it to the database.
setBlob
in interface java.sql.PreparedStatement
i
- the first parameter is 1, the second is 2, ...x
- a Blob
object that maps an SQL
BLOB
value
java.sql.SQLException
- if a database access error occurspublic void setClob(int i, java.sql.Clob x) throws java.sql.SQLException
Clob
object.
The driver converts this to an SQL CLOB
value when it
sends it to the database.
setClob
in interface java.sql.PreparedStatement
i
- the first parameter is 1, the second is 2, ...x
- a Clob
object that maps an SQL
CLOB
value
java.sql.SQLException
- if a database access error occurspublic void setArray(int i, java.sql.Array x) throws java.sql.SQLException
Array
object.
The driver converts this to an SQL ARRAY
value when it
sends it to the database.
setArray
in interface java.sql.PreparedStatement
i
- the first parameter is 1, the second is 2, ...x
- an Array
object that maps an SQL
ARRAY
value
java.sql.SQLException
- if a database access error occurspublic java.sql.ResultSetMetaData getMetaData() throws java.sql.SQLException
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.
getMetaData
in interface java.sql.PreparedStatement
ResultSet
object's columns or
null
if the driver cannot return a
ResultSetMetaData
object
java.sql.SQLException
- if a database access error occurspublic void setDate(int parameterIndex, java.sql.Date x, java.util.Calendar cal) throws java.sql.SQLException
java.sql.Date
value, using the given Calendar
object. The driver uses
the Calendar
object to construct an SQL DATE
value, which the driver then sends to the database. With a a
Calendar
object, the driver can calculate the date taking
into account a custom timezone. If no Calendar
object is
specified, the driver uses the default timezone, which is that of the
virtual machine running the application.
setDate
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter valuecal
- the Calendar
object the driver will use to
construct the date
java.sql.SQLException
- if a database access error occurspublic void setTime(int parameterIndex, java.sql.Time x, java.util.Calendar cal) throws java.sql.SQLException
java.sql.Time
value, using the given Calendar
object. The driver uses
the Calendar
object to construct an SQL TIME
value, which the driver then sends to the database. With a a
Calendar
object, the driver can calculate the time taking
into account a custom timezone. If no Calendar
object is
specified, the driver uses the default timezone, which is that of the
virtual machine running the application.
setTime
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter valuecal
- the Calendar
object the driver will use to
construct the time
java.sql.SQLException
- if a database access error occurspublic void setTimestamp(int parameterIndex, java.sql.Timestamp x, java.util.Calendar cal) throws java.sql.SQLException
java.sql.Timestamp
value, using the given
Calendar
object. The driver uses the Calendar
object to construct an SQL TIMESTAMP
value, which the
driver then sends to the database. With a Calendar
object,
the driver can calculate the timestamp taking into account a custom
timezone. If no Calendar
object is specified, the driver
uses the default timezone, which is that of the virtual machine running
the application.
setTimestamp
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the parameter valuecal
- the Calendar
object the driver will use to
construct the timestamp
java.sql.SQLException
- if a database access error occurspublic void setNull(int paramIndex, int sqlType, java.lang.String typeName) throws java.sql.SQLException
NULL
. This version
of the method setNull
should be used for user-defined
types and REF type parameters. Examples of user-defined types include:
STRUCT, DISTINCT, JAVA_OBJECT, and named array types.
Note: To be portable, applications must give the SQL type code and the fully-qualified SQL type name when specifying a NULL user-defined or REF parameter. In the case of a user-defined type the name is the type name of the parameter itself. For a REF parameter, the name is the type name of the referenced type. If a JDBC driver does not need the type code or type name information, it may ignore it. Although it is intended for user-defined and Ref parameters, this method may be used to set a null parameter of any JDBC type. If the parameter does not have a user-defined or REF type, the given typeName is ignored.
setNull
in interface java.sql.PreparedStatement
paramIndex
- the first parameter is 1, the second is 2, ...sqlType
- a value from java.sql.Types
typeName
- the fully-qualified name of an SQL user-defined type; ignored
if the parameter is not a user-defined type or REF
java.sql.SQLException
- if a database access error occurspublic void setURL(int parameterIndex, java.net.URL x) throws java.sql.SQLException
java.net.URL
value. The driver converts this to an SQL DATALINK
value
when it sends it to the database.
setURL
in interface java.sql.PreparedStatement
parameterIndex
- the first parameter is 1, the second is 2, ...x
- the java.net.URL
object to be set
java.sql.SQLException
- if a database access error occurspublic java.sql.ParameterMetaData getParameterMetaData() throws java.sql.SQLException
PreparedStatement
object's parameters.
getParameterMetaData
in interface java.sql.PreparedStatement
ParameterMetaData
object that contains
information about the number, types and properties of this
PreparedStatement
object's parameters
java.sql.SQLException
- if a database access error occursParameterMetaData
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