org.springframework.cassandra.core.support

Class EmptyResultSet

java.lang.Object

org.springframework.cassandra.core.support.ResultSetAdapter

org.springframework.cassandra.core.support.EmptyResultSet

All Implemented Interfaces:

com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>, com.datastax.driver.core.ResultSet, Iterable<com.datastax.driver.core.Row>

public class EmptyResultSet
extends ResultSetAdapter

An empty ResultSet implementation

Since:

1.5.0

Author:

John Blum

See Also:

ResultSetAdapter, ResultSet

Field Summary

Fields

Modifier and Type	Field and Description
protected static EmptyResultSet	INSTANCE

Constructor Summary

Constructors

Constructor and Description
EmptyResultSet()

Method Summary

Modifier and Type	Method and Description
List<com.datastax.driver.core.Row>	all()
List<com.datastax.driver.core.ExecutionInfo>	getAllExecutionInfo()
int	getAvailableWithoutFetching()
com.datastax.driver.core.ExecutionInfo	getExecutionInfo()
boolean	isExhausted()
boolean	isFullyFetched()
Iterator<com.datastax.driver.core.Row>	iterator()
static com.datastax.driver.core.ResultSet	nullSafeResultSet(com.datastax.driver.core.ResultSet resultSet) Returns the given ResultSet if not null, otherwise returns an empty ResultSet.
com.datastax.driver.core.Row	one()

Methods inherited from class org.springframework.cassandra.core.support.ResultSetAdapter

fetchMoreResults, getColumnDefinitions, wasApplied

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

INSTANCE

protected static final EmptyResultSet INSTANCE

Constructor Detail

EmptyResultSet

public EmptyResultSet()

Method Detail

nullSafeResultSet

public static com.datastax.driver.core.ResultSet nullSafeResultSet(com.datastax.driver.core.ResultSet resultSet)

Returns the given ResultSet if not null, otherwise returns an empty ResultSet.

Parameters:

resultSet - ResultSet to evaluate for null.

Returns:

the given ResultSet if not null, otherwise return an empty ResultSet.

See Also:

ResultSet

isExhausted

public boolean isExhausted()

Specified by:

isExhausted in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Overrides:

isExhausted in class ResultSetAdapter

isFullyFetched

public boolean isFullyFetched()

Specified by:

isFullyFetched in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Overrides:

isFullyFetched in class ResultSetAdapter

getAvailableWithoutFetching

public int getAvailableWithoutFetching()

Specified by:

getAvailableWithoutFetching in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Overrides:

getAvailableWithoutFetching in class ResultSetAdapter

getAllExecutionInfo

public List<com.datastax.driver.core.ExecutionInfo> getAllExecutionInfo()

Specified by:

getAllExecutionInfo in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Overrides:

getAllExecutionInfo in class ResultSetAdapter

getExecutionInfo

public com.datastax.driver.core.ExecutionInfo getExecutionInfo()

Specified by:

getExecutionInfo in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Overrides:

getExecutionInfo in class ResultSetAdapter

all

public List<com.datastax.driver.core.Row> all()

Specified by:

all in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Overrides:

all in class ResultSetAdapter

iterator

public Iterator<com.datastax.driver.core.Row> iterator()

Specified by:

iterator in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Specified by:

iterator in interface Iterable<com.datastax.driver.core.Row>

Overrides:

iterator in class ResultSetAdapter

one

public com.datastax.driver.core.Row one()

Specified by:

one in interface com.datastax.driver.core.PagingIterable<com.datastax.driver.core.ResultSet,com.datastax.driver.core.Row>

Specified by:

one in interface com.datastax.driver.core.ResultSet

Overrides:

one in class ResultSetAdapter