Package virtuoso.jdbc4

Class VirtuosoParameterMetaData

java.lang.Object

virtuoso.jdbc4.VirtuosoParameterMetaData

All Implemented Interfaces:

java.sql.ParameterMetaData, java.sql.Wrapper

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

The VirtuosoParameterMetaData class is an implementation of the ParameterMetaData interface in the JDBC API that represents information about a PreparedStatement. You can obtain one like below :

   ParameterMetaData metadata = statement.getParameterMetaData()
 

See Also:

PreparedStatement, VirtuosoPreparedStatement.getParameterMetaData()

Field Summary

Fields

Modifier and Type	Field	Description
protected Vector	parameters

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)
int	getParameterCount()
int	getParameterMode(int param)
int	getParameterType(int param)
java.lang.String	getParameterTypeName(int param)
int	getPrecision(int param)
int	getScale(int param)
int	isNullable(int param)
boolean	isSigned(int param)
boolean	isWrapperFor(java.lang.Class<?> iface)	Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
<T> T	unwrap(java.lang.Class<T> iface)	Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

Methods inherited from class java.lang.Object

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

Field Detail

parameters

protected Vector parameters

Method Detail

getParameterCount

public int getParameterCount()
                      throws VirtuosoException

Specified by:

getParameterCount in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

isNullable

public int isNullable(int param)
               throws VirtuosoException

Specified by:

isNullable in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

isSigned

public boolean isSigned(int param)
                 throws VirtuosoException

Specified by:

isSigned in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

getPrecision

public int getPrecision(int param)
                 throws VirtuosoException

Specified by:

getPrecision in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

getScale

public int getScale(int param)
             throws VirtuosoException

Specified by:

getScale in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

getParameterType

public int getParameterType(int param)
                     throws VirtuosoException

Specified by:

getParameterType in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

getParameterTypeName

public java.lang.String getParameterTypeName(int param)
                                      throws VirtuosoException

Specified by:

getParameterTypeName in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

getParameterClassName

public java.lang.String getParameterClassName(int param)
                                       throws VirtuosoException

Specified by:

getParameterClassName in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

getParameterMode

public int getParameterMode(int param)
                     throws VirtuosoException

Specified by:

getParameterMode in interface java.sql.ParameterMetaData

Throws:

VirtuosoException

unwrap

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

Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy. If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.

Specified by:

unwrap in interface java.sql.Wrapper

Parameters:

iface - A Class defining an interface that the result must implement.

Returns:

an object that implements the interface. May be a proxy for the actual implementing object.

Throws:

java.sql.SQLException - If no object found that implements the interface

Since:

1.6

isWrapperFor

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

Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. Returns false otherwise. If this implements the interface then return true, else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this does not implement the interface and is not a wrapper, return false. This method should be implemented as a low-cost operation compared to unwrap so that callers can use this method to avoid expensive unwrap calls that may fail. If this method returns true then calling unwrap with the same argument should succeed.

Specified by:

isWrapperFor in interface java.sql.Wrapper

Parameters:

iface - a Class defining an interface.

Returns:

true if this implements the interface or directly or indirectly wraps an object that does.

Throws:

java.sql.SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

Since:

1.6