forked from plusone/plusone-commons
72 lines
1.4 KiB
Java
72 lines
1.4 KiB
Java
package xyz.zhouxy.plusone.commons.base;
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import java.util.Objects;
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import java.util.function.Consumer;
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import java.util.function.UnaryOperator;
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import com.google.common.annotations.Beta;
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@Beta
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public final class Ref<T> {
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private T value;
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public Ref() {
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this.value = null;
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}
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public Ref(T value) {
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this.value = value;
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}
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public T getValue() {
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return value;
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}
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public void setValue(T value) {
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this.value = value;
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}
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public void transform(UnaryOperator<T> operator) {
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this.value = operator.apply(this.value);
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}
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public boolean isNull() {
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return this.value == null;
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}
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public boolean isNotNull() {
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return this.value != null;
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}
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public void execute(Consumer<T> consumer) {
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consumer.accept(value);
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}
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@Override
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public String toString() {
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return String.format("Ref[%s]", value);
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}
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@Override
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public int hashCode() {
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final int prime = 31;
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int result = 1;
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result = prime * result + ((value == null) ? 0 : value.hashCode());
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return result;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj)
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return true;
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if (obj == null)
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return false;
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if (getClass() != obj.getClass())
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return false;
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Ref<?> other = (Ref<?>) obj;
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return Objects.equals(this.value, other.value);
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}
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}
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