Package com.clickhouse.jdbc.metadata

Class ParameterMetaDataImpl

java.lang.Object

com.clickhouse.jdbc.metadata.ParameterMetaDataImpl

All Implemented Interfaces:

JdbcV2Wrapper, ParameterMetaData, Wrapper

public class ParameterMetaDataImpl
extends Object
implements ParameterMetaData, JdbcV2Wrapper

Implement ParameterMetaData interface and provides minimal information about parameters. This class will return only actual number of parameters. This class cannot be used to determine exact datatype for a parameter.

Field Summary

Fields inherited from interface java.sql.ParameterMetaData

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

Constructor Summary

Constructors

Constructor	Description
ParameterMetaDataImpl(int paramCount)

Method Summary

Modifier and Type	Method	Description
String	getParameterClassName(int param)	Always returns Object.class.getName().
int	getParameterCount()
int	getParameterMode(int param)	Always return java.sql.ParameterMetaData#parameterModeIn.
int	getParameterType(int param)	Always returns Types.OTHER.
String	getParameterTypeName(int param)	Always returns "UNKNOWN".
int	getPrecision(int param)	Always returns 0.
int	getScale(int param)	Always returns 0.
int	isNullable(int param)	Always returns ParameterMetaData.parameterNullableUnknown.
boolean	isSigned(int param)	Always returns false.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.clickhouse.jdbc.JdbcV2Wrapper

isWrapperFor, unwrap

Constructor Details

ParameterMetaDataImpl

public ParameterMetaDataImpl(int paramCount)

Method Details

getParameterCount

public int getParameterCount()

Specified by:

getParameterCount in interface ParameterMetaData

isNullable

public int isNullable(int param)
               throws SQLException

Always returns ParameterMetaData.parameterNullableUnknown.

Specified by:

isNullable in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

ParameterMetaData.parameterNullableUnknown

Throws:

SQLException

isSigned

public boolean isSigned(int param)
                 throws SQLException

Always returns false.

Specified by:

isSigned in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

false

Throws:

SQLException

getPrecision

public int getPrecision(int param)
                 throws SQLException

Always returns 0.

Specified by:

getPrecision in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

0

Throws:

SQLException

getScale

public int getScale(int param)
             throws SQLException

Always returns 0.

Specified by:

getScale in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

0

Throws:

SQLException

getParameterType

public int getParameterType(int param)
                     throws SQLException

Always returns Types.OTHER.

Specified by:

getParameterType in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

Types.OTHER

Throws:

SQLException

getParameterTypeName

public String getParameterTypeName(int param)
                            throws SQLException

Always returns "UNKNOWN".

Specified by:

getParameterTypeName in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

String "UNKNOWN"

Throws:

SQLException

getParameterClassName

public String getParameterClassName(int param)
                             throws SQLException

Always returns Object.class.getName().

Specified by:

getParameterClassName in interface ParameterMetaData

Parameters:

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

Returns:

String Object.class.getName()

Throws:

SQLException

getParameterMode

public int getParameterMode(int param)
                     throws SQLException

Always return java.sql.ParameterMetaData#parameterModeIn.

Specified by:

getParameterMode in interface ParameterMetaData

Parameters:

param - parameter index starting from 1

Returns:

java.sql.ParameterMetaData#parameterModeIn

Throws:

SQLException