com.mysql.jdbc

Class CallableStatement.CallableStatementParamInfoJDBC3

java.lang.Object

com.mysql.jdbc.CallableStatement.CallableStatementParamInfo

com.mysql.jdbc.CallableStatement.CallableStatementParamInfoJDBC3

All Implemented Interfaces:

java.sql.ParameterMetaData, java.sql.Wrapper

Enclosing class:

CallableStatement

protected class CallableStatement.CallableStatementParamInfoJDBC3
extends CallableStatement.CallableStatementParamInfo
implements java.sql.ParameterMetaData

Can't implement this directly, as then you can't use callable statements on JDK-1.3.1, which unfortunately isn't EOL'd yet, and still present quite a bit out there in the wild (Websphere, FreeBSD, anyone?)

Field Summary

Fields inherited from class com.mysql.jdbc.CallableStatement.CallableStatementParamInfo

catalogInUse, isFunctionCall, isReadOnlySafeChecked, isReadOnlySafeProcedure, nativeSql, numParameters, parameterList, parameterMap

Fields inherited from interface java.sql.ParameterMetaData

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

Constructor Summary

Constructors

Constructor and Description
CallableStatement.CallableStatementParamInfoJDBC3(CallableStatement.CallableStatementParamInfo paramInfo)
CallableStatement.CallableStatementParamInfoJDBC3(java.sql.ResultSet paramTypesRs)

Method Summary

Methods

Modifier and Type	Method and Description
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 com.mysql.jdbc.CallableStatement.CallableStatementParamInfo

checkBounds, clone, getParameter, getParameter, getParameterClassName, getParameterCount, getParameterMode, getParameterType, getParameterTypeName, getPrecision, getScale, isNullable, isSigned, iterator, numberOfParameters

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.sql.ParameterMetaData

getParameterClassName, getParameterCount, getParameterMode, getParameterType, getParameterTypeName, getPrecision, getScale, isNullable, isSigned

Methods inherited from interface java.sql.Wrapper

unwrap

Constructor Detail

CallableStatement.CallableStatementParamInfoJDBC3

CallableStatement.CallableStatementParamInfoJDBC3(java.sql.ResultSet paramTypesRs)
                                            throws java.sql.SQLException

Throws:

java.sql.SQLException

CallableStatement.CallableStatementParamInfoJDBC3

public CallableStatement.CallableStatementParamInfoJDBC3(CallableStatement.CallableStatementParamInfo paramInfo)

Method Detail

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