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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.ReferenceField;
import com.speedment.runtime.field.method.FindFromNullable;
import com.speedment.runtime.field.trait.HasComparableOperators;
import com.speedment.runtime.field.trait.HasReferenceOperators;
import com.speedment.runtime.field.trait.HasReferenceValue;
import java.util.function.Supplier;
import java.util.stream.Stream;
import static java.lang.String.format;
/**
* Default implementation of {@link FindFromNullable} for
* {@link ReferenceField ReferenceFields}.
*
* @author Emil Forslund
* @since 3.0.11
*/
public final class FindFromNullableReference<
ENTITY, FK_ENTITY,
V extends Comparable,
SOURCE extends Field
& HasReferenceOperators
& HasReferenceValue,
TARGET extends Field
& HasComparableOperators
> extends AbstractFindFromNullable
implements FindFromNullable {
public FindFromNullableReference(
SOURCE source,
TARGET target,
TableIdentifier foreignTable,
Supplier> streamSupplier) {
super(source, target, foreignTable, streamSupplier);
}
@Override
public boolean isPresent(ENTITY entity) {
return getSourceField().isNotNull().test(entity);
}
@Override
public FK_ENTITY applyOrThrow(ENTITY entity)
throws IllegalArgumentException {
return apply(entity).findAny()
.orElseThrow(() -> new IllegalArgumentException(format(
"Specified entity '%s' does not reference any %s.",
entity, getTableIdentifier()
)));
}
@Override
public Stream apply(ENTITY entity) {
return stream().filter(
getTargetField().equal(getSourceField().get(entity))
);
}
}