| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.qi4j.api.dataset; |
| |
| import org.qi4j.api.property.Property; |
| import org.qi4j.api.query.QueryException; |
| import org.qi4j.api.query.QueryExecutionException; |
| import org.qi4j.functional.Specification; |
| import org.qi4j.functional.Visitor; |
| |
| /** |
| * TODO |
| */ |
| public interface Query<T> |
| { |
| public enum Order |
| { |
| ASCENDING, DESCENDING |
| } |
| |
| Query filter( Specification<T> filter ); |
| |
| Query orderBy( final Property<?> property, final Order order ); |
| |
| Query skip( int skipNrOfResults ); |
| |
| Query limit( int maxNrOfResults ); |
| |
| // Variables |
| Query<T> setVariable( String name, Object value ); |
| |
| Object getVariable( String name ); |
| |
| long count() |
| throws QueryExecutionException; |
| |
| T first() |
| throws QueryExecutionException; |
| |
| T single() |
| throws QueryException; |
| |
| <ThrowableType extends Throwable> boolean execute( Visitor<T, ThrowableType> resultVisitor ) |
| throws ThrowableType, QueryExecutionException; |
| |
| Iterable<T> toIterable() |
| throws QueryExecutionException; |
| } |