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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
/**
*
* 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.expression;
import com.speedment.runtime.compute.expression.Expression;
import com.speedment.runtime.compute.trait.ToNullable;
import com.speedment.runtime.field.Field;
import com.speedment.runtime.field.ReferenceField;
import com.speedment.runtime.field.expression.FieldMapper;
import com.speedment.runtime.field.predicate.FieldIsNotNullPredicate;
import com.speedment.runtime.field.predicate.FieldIsNullPredicate;
import static java.util.Objects.requireNonNull;
/**
* Abstract base implementation of {@link FieldMapper}.
*
* @author Emil Forslund
* @since 3.1.0
*/
abstract class AbstractFieldMapper, MAPPER>
implements FieldMapper {
final ReferenceField field;
final MAPPER mapper;
AbstractFieldMapper(ReferenceField field, MAPPER mapper) {
this.field = requireNonNull(field);
this.mapper = requireNonNull(mapper);
}
@Override
public ReferenceField getField() {
return field;
}
@Override
public MAPPER getMapper() {
return mapper;
}
@Override
public FieldIsNullPredicate isNull() {
return new MapperIsNull<>(this, field);
}
@Override
public FieldIsNotNullPredicate isNotNull() {
return new MapperIsNotNull<>(this, field);
}
private final static class MapperIsNull
implements FieldIsNullPredicate {
private final ToNullable expression;
private final ReferenceField field;
MapperIsNull(ToNullable expression,
ReferenceField field) {
this.expression = requireNonNull(expression);
this.field = requireNonNull(field);
}
@Override
public boolean test(ENTITY value) {
return field.get(value) == null;
}
@Override
public FieldIsNotNullPredicate negate() {
return new MapperIsNotNull<>(expression, field);
}
@Override
public ToNullable expression() {
return expression;
}
@Override
public Field getField() {
return field;
}
}
private final static class MapperIsNotNull
implements FieldIsNotNullPredicate {
private final ToNullable expression;
private final ReferenceField field;
MapperIsNotNull(ToNullable expression,
ReferenceField field) {
this.expression = requireNonNull(expression);
this.field = requireNonNull(field);
}
@Override
public boolean test(ENTITY value) {
return field.get(value) != null;
}
@Override
public FieldIsNullPredicate negate() {
return new MapperIsNull<>(expression, field);
}
@Override
public ToNullable expression() {
return expression;
}
@Override
public Field getField() {
return field;
}
}
}