Package org.hsqldb.jdbc

Class jdbcParameterMetaData

java.lang.Object

org.hsqldb.jdbc.jdbcParameterMetaData

All Implemented Interfaces:

java.sql.ParameterMetaData, java.sql.Wrapper

public class jdbcParameterMetaData
extends java.lang.Object
implements java.sql.ParameterMetaData

An object that can be used to get information about the types and properties of the parameters in a PreparedStatement object.

Since:

JDK 1.4, HSQLDB 1.7.2

Author:

boucherb@users

Field Summary

Fields inherited from interface java.sql.ParameterMetaData

parameterModeIn, parameterModeInOut, parameterModeOut, parameterModeUnknown, parameterNoNulls, parameterNullable, parameterNullableUnknown

Method Summary

Modifier and Type	Method	Description
java.lang.String	getParameterClassName(int param)	Retrieves the fully-qualified name of the Java class whose instances should be passed to the method PreparedStatement.setObject.
int	getParameterCount()	Retrieves the number of parameters in the PreparedStatement object for which this ParameterMetaData object provides information.
int	getParameterMode(int param)	Retrieves the designated parameter's mode.
int	getParameterType(int param)	Retrieves the designated parameter's SQL type.
java.lang.String	getParameterTypeName(int param)	Retrieves the designated parameter's database-specific type name.
int	getPrecision(int param)	Retrieves the designated parameter's number of decimal digits.
int	getScale(int param)	Retrieves the designated parameter's number of digits to right of the decimal point.
int	isNullable(int param)	Retrieves whether null values are allowed in the designated parameter.
boolean	isSigned(int param)	Retrieves whether values for the designated parameter can be signed numbers.
boolean	isWrapperFor(java.lang.Class<?> iface)
java.lang.String	toString()	Retrieves a String repsentation of this object.
<T> T	unwrap(java.lang.Class<T> iface)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getParameterClassName

public java.lang.String getParameterClassName(int param)
                                       throws java.sql.SQLException

Retrieves the fully-qualified name of the Java class whose instances should be passed to the method PreparedStatement.setObject.

Specified by:

getParameterClassName in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

the fully-qualified name of the class in the Java programming language that would be used by the method PreparedStatement.setObject to set the value in the specified parameter. This is the class name used for custom mapping.

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

getParameterCount

public int getParameterCount()
                      throws java.sql.SQLException

Retrieves the number of parameters in the PreparedStatement object for which this ParameterMetaData object provides information.

Specified by:

getParameterCount in interface java.sql.ParameterMetaData

Returns:

the number of parameters

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

getParameterMode

public int getParameterMode(int param)
                     throws java.sql.SQLException

Retrieves the designated parameter's mode.

Specified by:

getParameterMode in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

mode of the parameter; one of ParameterMetaData.parameterModeIn, ParameterMetaData.parameterModeOut, ParameterMetaData.parameterModeInOut, ParameterMetaData.parameterModeUnknown

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

getParameterType

public int getParameterType(int param)
                     throws java.sql.SQLException

Retrieves the designated parameter's SQL type.

Specified by:

getParameterType in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

SQL type from java.sql.Types

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

See Also:

Types

getParameterTypeName

public java.lang.String getParameterTypeName(int param)
                                      throws java.sql.SQLException

Retrieves the designated parameter's database-specific type name.

Specified by:

getParameterTypeName in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

type the name used by the database. If the parameter type is a user-defined type, then a fully-qualified type name is returned.

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

getPrecision

public int getPrecision(int param)
                 throws java.sql.SQLException

Retrieves the designated parameter's number of decimal digits.

Specified by:

getPrecision in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

precision

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

getScale

public int getScale(int param)
             throws java.sql.SQLException

Retrieves the designated parameter's number of digits to right of the decimal point.

Specified by:

getScale in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

scale

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

isNullable

public int isNullable(int param)
               throws java.sql.SQLException

Retrieves whether null values are allowed in the designated parameter.

Specified by:

isNullable in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

the nullability status of the given parameter; one of ParameterMetaData.parameterNoNulls, ParameterMetaData.parameterNullable or ParameterMetaData.parameterNullableUnknown

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

isSigned

public boolean isSigned(int param)
                 throws java.sql.SQLException

Retrieves whether values for the designated parameter can be signed numbers.

Specified by:

isSigned in interface java.sql.ParameterMetaData

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

true if so; false otherwise

Throws:

java.sql.SQLException - if a database access error occurs

Since:

JDK 1.4, HSQLDB 1.7.2

toString

public java.lang.String toString()

Retrieves a String repsentation of this object.

Overrides:

toString in class java.lang.Object

Returns:

a String repsentation of this object

unwrap

public <T> T unwrap(java.lang.Class<T> iface)
             throws java.sql.SQLException

Specified by:

unwrap in interface java.sql.Wrapper

Throws:

java.sql.SQLException

isWrapperFor

public boolean isWrapperFor(java.lang.Class<?> iface)
                     throws java.sql.SQLException

Specified by:

isWrapperFor in interface java.sql.Wrapper

Throws:

java.sql.SQLException