49 lines
1011 B
Java
49 lines
1011 B
Java
package it.cavallium.dbengine.database;
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import java.util.Objects;
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import org.jetbrains.annotations.Nullable;
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public class Delta<T> {
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private final @Nullable T previous;
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private final @Nullable T current;
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public Delta(@Nullable T previous, @Nullable T current) {
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this.previous = previous;
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this.current = current;
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}
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public boolean isModified() {
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return !Objects.equals(previous, current);
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}
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public @Nullable T previous() {
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return previous;
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}
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public @Nullable T current() {
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return current;
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == this)
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return true;
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if (obj == null || obj.getClass() != this.getClass())
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return false;
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var that = (Delta) obj;
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return Objects.equals(this.previous, that.previous) && Objects.equals(this.current, that.current);
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}
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@Override
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public int hashCode() {
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return Objects.hash(previous, current);
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}
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@Override
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public String toString() {
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return "Delta[" + "previous=" + previous + ", " + "current=" + current + ']';
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}
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}
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