Class PredicateQueryEngine

java.lang.Object

org.springframework.data.keyvalue.core.QueryEngine<KeyValueAdapter, Predicate<?>, Comparator<?>>

org.springframework.data.keyvalue.core.PredicateQueryEngine

public class PredicateQueryEngine
extends QueryEngine<KeyValueAdapter, Predicate<?>, Comparator<?>>

QueryEngine implementation specific for executing Predicate based KeyValueQuery against KeyValueAdapter.

Since:

3.3

Author:

Christoph Strobl

Field Summary

Fields

Modifier and Type	Field	Description
static final PredicateQueryEngine	INSTANCE

Constructor Summary

Constructors

Constructor	Description
PredicateQueryEngine()	Creates a new PredicateQueryEngine.
PredicateQueryEngine(SortAccessor<Comparator<?>> sortAccessor)	Creates a new query engine using provided accessor for sorting results.

Method Summary

Modifier and Type	Method	Description
long	count(@Nullable Predicate<?> criteria, String keyspace)
Collection<?>	execute(@Nullable Predicate<?> criteria, @Nullable Comparator<?> sort, long offset, int rows, String keyspace)

Methods inherited from class QueryEngine

count, execute, execute, execute, getAdapter, getRequiredAdapter, registerAdapter

Methods inherited from class Object

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

Field Details

INSTANCE

public static final PredicateQueryEngine INSTANCE

Constructor Details

PredicateQueryEngine

public PredicateQueryEngine()

Creates a new PredicateQueryEngine.

PredicateQueryEngine

public PredicateQueryEngine(SortAccessor<Comparator<?>> sortAccessor)

Creates a new query engine using provided accessor for sorting results.

Method Details

execute

public Collection<?> execute(@Nullable Predicate<?> criteria,
 @Nullable Comparator<?> sort,
 long offset,
 int rows,
 String keyspace)

Specified by:

execute in class QueryEngine<KeyValueAdapter, Predicate<?>, Comparator<?>>

Parameters:

criteria -

sort -

offset -

rows -

keyspace -

Returns:

count

public long count(@Nullable Predicate<?> criteria,
 String keyspace)

Specified by:

count in class QueryEngine<KeyValueAdapter, Predicate<?>, Comparator<?>>

Parameters:

criteria -

keyspace -

Returns: