com.mysema.query.collections
Class DefaultQueryEngine

java.lang.Object
  com.mysema.query.collections.DefaultQueryEngine

All Implemented Interfaces:

QueryEngine

public class DefaultQueryEngine
extends Object
implements QueryEngine

Default implementation of the QueryEngine interface

Author:

tiwe

Field Summary

static QueryEngine

DEFAULT

Constructor Summary

DefaultQueryEngine(DefaultEvaluatorFactory evaluatorFactory)

Method Summary

long	count(QueryMetadata metadata, Map<Expression<?>,Iterable<?>> iterables) Evaluate the given query and return the count of matched rows
boolean	exists(QueryMetadata metadata, Map<Expression<?>,Iterable<?>> iterables)
<T> List<T>	list(QueryMetadata metadata, Map<Expression<?>,Iterable<?>> iterables, Expression<T> projection) Evaluate the given query and return the projection as a list

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final QueryEngine DEFAULT

Constructor Detail

DefaultQueryEngine

public DefaultQueryEngine(DefaultEvaluatorFactory evaluatorFactory)

Method Detail

count

public long count(QueryMetadata metadata,
                  Map<Expression<?>,Iterable<?>> iterables)

Description copied from interface: QueryEngine

Evaluate the given query and return the count of matched rows

Specified by:

count in interface QueryEngine

Returns:

exists

public boolean exists(QueryMetadata metadata,
                      Map<Expression<?>,Iterable<?>> iterables)

Specified by:

exists in interface QueryEngine

Returns:

list

public <T> List<T> list(QueryMetadata metadata,
                        Map<Expression<?>,Iterable<?>> iterables,
                        Expression<T> projection)

Description copied from interface: QueryEngine

Evaluate the given query and return the projection as a list

Specified by:

list in interface QueryEngine

Returns: