com.speedment.runtime.core.internal.manager.FieldSetImpl Maven / Gradle / Ivy
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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.core.internal.manager;
import com.speedment.runtime.core.manager.FieldSet;
import com.speedment.runtime.field.Field;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public final class FieldSetImpl implements FieldSet {
public static final FieldSetImpl ALL = new FieldSetImpl<>($ -> true);
public static final FieldSetImpl NONE = new FieldSetImpl<>($ -> false);
private final Predicate includedId;
public FieldSetImpl(Predicate includedId) {
this.includedId = includedId;
}
public FieldSetImpl(Stream> fieldStream) {
Set ids = fieldStream.map(f -> f.identifier().getColumnId()).collect(Collectors.toSet());
switch (ids.size()) {
case 0:
includedId = $ -> false;
break;
case 1:
final String id = ids.iterator().next();
includedId = id::equals;
break;
default:
includedId = ids::contains;
}
}
@Override
public boolean test(String id) {
return includedId.test(id);
}
public FieldSetImpl negate() {
return new FieldSetImpl<>(includedId.negate());
}
@Override
public FieldSet except(Field field) {
String id = field.identifier().getColumnId();
return new FieldSetImpl<>(s -> !id.equals(s) && test(s));
}
@Override
public FieldSet and(Field field) {
String id = field.identifier().getColumnId();
return new FieldSetImpl<>(s -> id.equals(s) || test(s));
}
}