org.springframework.scheduling.support.CompositeCronField Maven / Gradle / Ivy
/*
* Copyright 2002-2021 the original author or authors.
*
* 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
*
* https://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 org.springframework.scheduling.support;
import java.time.temporal.Temporal;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Extension of {@link CronField} that wraps an array of cron fields.
*
* @author Arjen Poutsma
* @since 5.3.3
*/
final class CompositeCronField extends CronField {
private final CronField[] fields;
private final String value;
private CompositeCronField(Type type, CronField[] fields, String value) {
super(type);
this.fields = fields;
this.value = value;
}
/**
* Composes the given fields into a {@link CronField}.
*/
public static CronField compose(CronField[] fields, Type type, String value) {
Assert.notEmpty(fields, "Fields must not be empty");
Assert.hasLength(value, "Value must not be empty");
if (fields.length == 1) {
return fields[0];
}
else {
return new CompositeCronField(type, fields, value);
}
}
@Nullable
@Override
public > T nextOrSame(T temporal) {
T result = null;
for (CronField field : this.fields) {
T candidate = field.nextOrSame(temporal);
if (result == null ||
candidate != null && candidate.compareTo(result) < 0) {
result = candidate;
}
}
return result;
}
@Override
public int hashCode() {
return this.value.hashCode();
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof CompositeCronField other)) {
return false;
}
return type() == other.type() &&
this.value.equals(other.value);
}
@Override
public String toString() {
return type() + " '" + this.value + "'";
}
}