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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
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/*
*
* Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
*
* Licensed 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 com.speedment.runtime.core.internal.component.sql;
import com.speedment.runtime.core.component.sql.SqlStreamSupplierComponent;
import com.speedment.runtime.core.stream.parallel.ParallelStrategy;
import com.speedment.runtime.field.trait.HasComparableOperators;
import java.util.Optional;
import java.util.stream.Stream;
/**
* The common interface for table specific stream handlers that is managed by a
* {@link SqlStreamSupplierComponent}.
*
* @author Emil Forslund
* @since 3.0.1
*/
interface SqlStreamSupplier {
/**
* Produces a stream over the entities in the managed table. The
* implementation of this method is free to produce a mutable stream that
* can be modified before terminating, for an example by converting parts or
* the whole stream into a SQL query.
*
* @param parallelStrategy the parallel strategy to use
* @return the entity stream
*/
Stream stream(ParallelStrategy parallelStrategy);
/**
* Finds a particular entity based on an ordinary key-value search. This is
* potentially faster than using the
* {@link #stream(ParallelStrategy)}-method.
*
* If multiple entities exist with the specified value for the specified
* field, any one of them might be returned. Which one is not defined.
*
* @param the value type
* @param field the field to select by
* @param value the value to look for
* @return one entity that matches the search or empty
*/
> Optional findAny(
HasComparableOperators field, V value);
}