com.mysema.query.collections

Interface QueryEngine

All Known Implementing Classes:

DefaultQueryEngine

public interface QueryEngine

QueryEngine defines an interface for the evaluation of ColQuery queries

Author:

tiwe

Method Summary

Methods

Modifier and Type	Method and Description
long	count(QueryMetadata metadata, java.util.Map<Expression<?>,java.lang.Iterable<?>> iterables) Evaluate the given query and return the count of matched rows
boolean	exists(QueryMetadata metadata, java.util.Map<Expression<?>,java.lang.Iterable<?>> iterables)
<T> java.util.List<T>	list(QueryMetadata metadata, java.util.Map<Expression<?>,java.lang.Iterable<?>> iterables, Expression<T> projection) Evaluate the given query and return the projection as a list

Method Detail

count

long count(QueryMetadata metadata,
         java.util.Map<Expression<?>,java.lang.Iterable<?>> iterables)

Evaluate the given query and return the count of matched rows

Parameters:

metadata -

iterables -

Returns:

list

<T> java.util.List<T> list(QueryMetadata metadata,
                         java.util.Map<Expression<?>,java.lang.Iterable<?>> iterables,
                         Expression<T> projection)

Evaluate the given query and return the projection as a list

Parameters:

metadata -

iterables -

Returns:

exists

boolean exists(QueryMetadata metadata,
             java.util.Map<Expression<?>,java.lang.Iterable<?>> iterables)

Parameters:

metadata -

iterables -

Returns: