com.mysql.jdbc

Class MysqlParameterMetadata

java.lang.Object

com.mysql.jdbc.MysqlParameterMetadata

All Implemented Interfaces:

java.sql.ParameterMetaData, java.sql.Wrapper

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

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ResultSetMetaData	metadata
(package private) int	parameterCount
(package private) boolean	returnSimpleMetadata

Fields inherited from interface java.sql.ParameterMetaData

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

Constructor Summary

Constructors

Constructor and Description
MysqlParameterMetadata(Field[] fieldInfo, int parameterCount, ExceptionInterceptor exceptionInterceptor)
MysqlParameterMetadata(int count) Used for "fake" basic metadata for client-side prepared statements when we don't know the parameter types.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getParameterClassName(int arg0)
int	getParameterCount()
int	getParameterMode(int arg0)
int	getParameterType(int arg0)
java.lang.String	getParameterTypeName(int arg0)
int	getPrecision(int arg0)
int	getScale(int arg0)
int	isNullable(int arg0)
boolean	isSigned(int arg0)
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.
java.lang.Object	unwrap(java.lang.Class<?> 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

Methods inherited from interface java.sql.Wrapper

unwrap

Field Detail

returnSimpleMetadata

boolean returnSimpleMetadata

metadata

ResultSetMetaData metadata

parameterCount

int parameterCount

Constructor Detail

MysqlParameterMetadata

MysqlParameterMetadata(Field[] fieldInfo,
                      int parameterCount,
                      ExceptionInterceptor exceptionInterceptor)

MysqlParameterMetadata

MysqlParameterMetadata(int count)

Used for "fake" basic metadata for client-side prepared statements when we don't know the parameter types.

Parameters:

parameterCount -

Method Detail

getParameterCount

public int getParameterCount()
                      throws java.sql.SQLException

Specified by:

getParameterCount in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

isNullable

public int isNullable(int arg0)
               throws java.sql.SQLException

Specified by:

isNullable in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

isSigned

public boolean isSigned(int arg0)
                 throws java.sql.SQLException

Specified by:

isSigned in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

getPrecision

public int getPrecision(int arg0)
                 throws java.sql.SQLException

Specified by:

getPrecision in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

getScale

public int getScale(int arg0)
             throws java.sql.SQLException

Specified by:

getScale in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

getParameterType

public int getParameterType(int arg0)
                     throws java.sql.SQLException

Specified by:

getParameterType in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

getParameterTypeName

public java.lang.String getParameterTypeName(int arg0)
                                      throws java.sql.SQLException

Specified by:

getParameterTypeName in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

getParameterClassName

public java.lang.String getParameterClassName(int arg0)
                                       throws java.sql.SQLException

Specified by:

getParameterClassName in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

getParameterMode

public int getParameterMode(int arg0)
                     throws java.sql.SQLException

Specified by:

getParameterMode in interface java.sql.ParameterMetaData

Throws:

java.sql.SQLException

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:

interfaces - 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

unwrap

public java.lang.Object unwrap(java.lang.Class<?> 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. The result may be either the object found to implement the interface or a proxy for that object. If the receiver implements the interface then that is the object. If the receiver is a wrapper and the wrapped object implements the interface then that is the object. Otherwise the object is the result of calling unwrap recursively on the wrapped object. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.

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