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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.field.internal.method;

import com.speedment.runtime.config.identifier.TableIdentifier;
import com.speedment.runtime.field.Field;
import com.speedment.runtime.field.method.FindFromNullable;
import com.speedment.runtime.field.trait.HasComparableOperators;

import java.util.function.Supplier;
import java.util.stream.Stream;

import static java.util.Objects.requireNonNull;

/**
 * Abstract base implementation of the {@link FindFromNullable}-interface.
 *
 * @author Emil Forslund
 * @since  3.0.11
 */
abstract class AbstractFindFromNullable<
    ENTITY,
    FK_ENTITY,
    V extends Comparable,
    SOURCE extends Field,
    TARGET extends Field & HasComparableOperators
> implements FindFromNullable {

    private final SOURCE source;
    private final TARGET target;
    private final TableIdentifier identifier;
    private final Supplier> streamSupplier;

    AbstractFindFromNullable(
        SOURCE source,
        TARGET target,
        TableIdentifier identifier,
        Supplier> streamSupplier) {

        this.source         = requireNonNull(source);
        this.target         = requireNonNull(target);
        this.identifier     = requireNonNull(identifier);
        this.streamSupplier = requireNonNull(streamSupplier);
    }

    @Override
    public final SOURCE getSourceField() {
        return source;
    }

    @Override
    public final TARGET getTargetField() {
        return target;
    }

    @Override
    public final TableIdentifier getTableIdentifier() {
        return identifier;
    }

    protected final Stream stream() {
        return streamSupplier.get();
    }
}