org.springframework.kafka.support.JavaUtils Maven / Gradle / Ivy
/*
* Copyright 2019 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.kafka.support;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
/**
* Chained utility methods to simplify some Java repetitive code. Obtain a reference to
* the singleton {@link #INSTANCE} and then chain calls to the utility methods.
*
* @author Gary Russell
* @author Artem Bilan
*
* @since 2.3
*/
public final class JavaUtils {
/**
* The singleton instance of this utility class.
*/
public static final JavaUtils INSTANCE = new JavaUtils();
private JavaUtils() {
}
/**
* Invoke {@link Consumer#accept(Object)} with the value if the condition is true.
* @param condition the condition.
* @param value the value.
* @param consumer the consumer.
* @param the value type.
* @return this.
*/
public JavaUtils acceptIfCondition(boolean condition, T value, Consumer consumer) {
if (condition) {
consumer.accept(value);
}
return this;
}
/**
* Invoke {@link Consumer#accept(Object)} with the value if it is not null.
* @param value the value.
* @param consumer the consumer.
* @param the value type.
* @return this.
*/
public JavaUtils acceptIfNotNull(T value, Consumer consumer) {
if (value != null) {
consumer.accept(value);
}
return this;
}
/**
* Invoke {@link Consumer#accept(Object)} with the value if it is not null or empty.
* @param value the value.
* @param consumer the consumer.
* @return this.
*/
public JavaUtils acceptIfHasText(String value, Consumer consumer) {
if (StringUtils.hasText(value)) {
consumer.accept(value);
}
return this;
}
/**
* Invoke {@link Consumer#accept(Object)} with the value if it is not null or empty.
* @param value the value.
* @param consumer the consumer.
* @param the value type.
* @return this.
*/
public JavaUtils acceptIfNotEmpty(List value, Consumer> consumer) {
if (!CollectionUtils.isEmpty(value)) {
consumer.accept(value);
}
return this;
}
/**
* Invoke {@link Consumer#accept(Object)} with the value if it is not null or empty.
* @param value the value.
* @param consumer the consumer.
* @param the value type.
* @return this.
*/
public JavaUtils acceptIfNotEmpty(T[] value, Consumer consumer) {
if (!ObjectUtils.isEmpty(value)) {
consumer.accept(value);
}
return this;
}
/**
* Invoke {@link BiConsumer#accept(Object, Object)} with the arguments if the
* condition is true.
* @param condition the condition.
* @param t1 the first consumer argument
* @param t2 the second consumer argument
* @param consumer the consumer.
* @param the first argument type.
* @param the second argument type.
* @return this.
*/
public JavaUtils acceptIfCondition(boolean condition, T1 t1, T2 t2, BiConsumer consumer) {
if (condition) {
consumer.accept(t1, t2);
}
return this;
}
/**
* Invoke {@link BiConsumer#accept(Object, Object)} with the arguments if the t2
* argument is not null.
* @param t1 the first argument
* @param t2 the second consumer argument
* @param consumer the consumer.
* @param the first argument type.
* @param the second argument type.
* @return this.
*/
public JavaUtils acceptIfNotNull(T1 t1, T2 t2, BiConsumer consumer) {
if (t2 != null) {
consumer.accept(t1, t2);
}
return this;
}
/**
* Invoke {@link BiConsumer#accept(Object, Object)} with the arguments if the value
* argument is not null or empty.
* @param t1 the first consumer argument.
* @param value the second consumer argument
* @param the first argument type.
* @param consumer the consumer.
* @return this.
*/
public JavaUtils acceptIfHasText(T t1, String value, BiConsumer consumer) {
if (StringUtils.hasText(value)) {
consumer.accept(t1, value);
}
return this;
}
}