org.springframework.data.keyvalue.core

Class QueryEngine<ADAPTER extends KeyValueAdapter,CRITERIA,SORT>

java.lang.Object

org.springframework.data.keyvalue.core.QueryEngine<ADAPTER,CRITERIA,SORT>

Type Parameters:

ADAPTER -

CRITERIA -

SORT -

public abstract class QueryEngine<ADAPTER extends KeyValueAdapter,CRITERIA,SORT>
extends Object

Base implementation for accessing and executing KeyValueQuery against a KeyValueAdapter.

Author:

Christoph Strobl

Constructor Summary

Constructors

Constructor and Description
QueryEngine(CriteriaAccessor<CRITERIA> criteriaAccessor, SortAccessor<SORT> sortAccessor)

Method Summary

Modifier and Type	Method and Description
abstract long	count(CRITERIA criteria, Serializable keyspace)
long	count(KeyValueQuery<?> query, Serializable keyspace) Extract query attributes and delegate to concrete execution.
abstract Collection<?>	execute(CRITERIA criteria, SORT sort, int offset, int rows, Serializable keyspace)
<T> Collection<T>	execute(CRITERIA criteria, SORT sort, int offset, int rows, Serializable keyspace, Class<T> type)
Collection<?>	execute(KeyValueQuery<?> query, Serializable keyspace) Extract query attributes and delegate to concrete execution.
<T> Collection<T>	execute(KeyValueQuery<?> query, Serializable keyspace, Class<T> type) Extract query attributes and delegate to concrete execution.
protected ADAPTER	getAdapter() Get the KeyValueAdapter used.
void	registerAdapter(KeyValueAdapter adapter)

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryEngine

public QueryEngine(CriteriaAccessor<CRITERIA> criteriaAccessor,
                   SortAccessor<SORT> sortAccessor)

Method Detail

execute

public Collection<?> execute(KeyValueQuery<?> query,
                             Serializable keyspace)

Extract query attributes and delegate to concrete execution.

Parameters:

query -

keyspace -

Returns:

execute

public <T> Collection<T> execute(KeyValueQuery<?> query,
                                 Serializable keyspace,
                                 Class<T> type)

Extract query attributes and delegate to concrete execution.

Parameters:

query -

keyspace -

Returns:

count

public long count(KeyValueQuery<?> query,
                  Serializable keyspace)

Extract query attributes and delegate to concrete execution.

Parameters:

query -

keyspace -

Returns:

execute

public abstract Collection<?> execute(CRITERIA criteria,
                                      SORT sort,
                                      int offset,
                                      int rows,
                                      Serializable keyspace)

Parameters:

criteria -

sort -

offset -

rows -

keyspace -

Returns:

execute

public <T> Collection<T> execute(CRITERIA criteria,
                                 SORT sort,
                                 int offset,
                                 int rows,
                                 Serializable keyspace,
                                 Class<T> type)

Parameters:

criteria -

sort -

offset -

rows -

keyspace -

type -

Returns:

Since:

1.1

count

public abstract long count(CRITERIA criteria,
                           Serializable keyspace)

Parameters:

criteria -

keyspace -

Returns:

getAdapter

protected ADAPTER getAdapter()

Get the KeyValueAdapter used.

Returns:

registerAdapter

public void registerAdapter(KeyValueAdapter adapter)

Parameters:

adapter -