com.ing.data.cassandra.jdbc

Class CassandraParameterMetaData

java.lang.Object

com.ing.data.cassandra.jdbc.CassandraParameterMetaData

All Implemented Interfaces:

ParameterMetaData, Wrapper

public class CassandraParameterMetaData
extends Object
implements ParameterMetaData

Cassandra parameter metadata: implementation class for ParameterMetaData.

Field Summary

Fields inherited from interface java.sql.ParameterMetaData

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

Constructor Summary

Constructors

Constructor and Description
CassandraParameterMetaData(com.datastax.oss.driver.api.core.cql.BoundStatement boundStatement, int parametersCount) Constructor.

Method Summary

Modifier and Type	Method and Description
String	getParameterClassName(int i)
int	getParameterCount()
int	getParameterMode(int i) Retrieves the designated parameter's mode.
int	getParameterType(int i)
String	getParameterTypeName(int i)
int	getPrecision(int i)
int	getScale(int i)
int	isNullable(int i) Retrieves whether null values are allowed in the designated parameter.
boolean	isSigned(int i)
boolean	isWrapperFor(Class<?> iface)
<T> T	unwrap(Class<T> iface)

Methods inherited from class java.lang.Object

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

Constructor Detail

CassandraParameterMetaData

public CassandraParameterMetaData(com.datastax.oss.driver.api.core.cql.BoundStatement boundStatement,
                                  int parametersCount)

Constructor.

Parameters:

boundStatement - The CQL bound statement from a CassandraPreparedStatement.

parametersCount - The number of parameters in the prepared statement.

Method Detail

getParameterCount

public int getParameterCount()

Specified by:

getParameterCount in interface ParameterMetaData

isNullable

public int isNullable(int i)

Retrieves whether null values are allowed in the designated parameter.

All columns are nullable in Cassandra so any parameter allows null values.

Specified by:

isNullable in interface ParameterMetaData

Parameters:

i - The parameter index considering the first parameter is 1, the second is 2, ...

Returns:

The nullability status of the given parameter; always ParameterMetaData.parameterNullable in this implementation.

isSigned

public boolean isSigned(int i)
                 throws SQLException

Specified by:

isSigned in interface ParameterMetaData

Throws:

SQLException

getPrecision

public int getPrecision(int i)
                 throws SQLException

Specified by:

getPrecision in interface ParameterMetaData

Throws:

SQLException

getScale

public int getScale(int i)
             throws SQLException

Specified by:

getScale in interface ParameterMetaData

Throws:

SQLException

getParameterType

public int getParameterType(int i)

Specified by:

getParameterType in interface ParameterMetaData

getParameterTypeName

public String getParameterTypeName(int i)

Specified by:

getParameterTypeName in interface ParameterMetaData

getParameterClassName

public String getParameterClassName(int i)

Specified by:

getParameterClassName in interface ParameterMetaData

getParameterMode

public int getParameterMode(int i)

Retrieves the designated parameter's mode.

Since Cassandra only supports prepared statements and not callable statements, the parameter's mode is always IN.

Specified by:

getParameterMode in interface ParameterMetaData

Parameters:

i - The parameter index considering the first parameter is 1, the second is 2, ...

Returns:

The mode of the parameter; always ParameterMetaData.parameterModeIn in this implementation.

isWrapperFor

public boolean isWrapperFor(Class<?> iface)
                     throws SQLException

Specified by:

isWrapperFor in interface Wrapper

Throws:

SQLException

unwrap

public <T> T unwrap(Class<T> iface)
             throws SQLException

Specified by:

unwrap in interface Wrapper

Throws:

SQLException