いい感じに時間を扱いたい

TerminatedTransactionTime.java

package net.orekyuu.bitemporaldomaexample.domain.type;

/**
 * システム的な変更時のシステム時間の変化
 */
public class TerminatedTransactionTime {
    private final TransactionTime newTransaction;
    private final TransactionTime terminatedTransaction;

    TerminatedTransactionTime(TransactionTime newTransaction, TransactionTime terminatedTransaction) {
        this.newTransaction = newTransaction;
        this.terminatedTransaction = terminatedTransaction;
    }

    public TransactionTime newTransaction() {
        return newTransaction;
    }

    public TransactionTime terminatedTransaction() {
        return terminatedTransaction;
    }
}

TransactionTime.java

package net.orekyuu.bitemporaldomaexample.domain.type;

import org.seasar.doma.Column;
import org.seasar.doma.Embeddable;

import java.time.LocalDateTime;

/**
 * システム的な有効時間
 */
@Embeddable
public class TransactionTime {
    @Column
    private final LocalDateTime processFrom;
    @Column
    private final LocalDateTime processThru;
    static final LocalDateTime MAX = LocalDateTime.of(9999, 12, 31, 23, 59, 59);

    TransactionTime(LocalDateTime processFrom, LocalDateTime processThru) {
        this.processFrom = processFrom;
        this.processThru = processThru;
    }

    public static TransactionTime create(LocalDateTime time) {
        return new TransactionTime(time, LocalDateTime.MAX);
    }

    public TerminatedTransactionTime terminate(LocalDateTime time) {
        return new TerminatedTransactionTime(
                new TransactionTime(time, MAX),
                new TransactionTime(processFrom, time));
    }

    public LocalDateTime processFrom() {
        return processFrom;
    }

    public LocalDateTime processThru() {
        return processThru;
    }
}

ValidTime.java

package net.orekyuu.bitemporaldomaexample.domain.type;

import org.seasar.doma.Column;
import org.seasar.doma.Embeddable;

import java.time.LocalDateTime;

/**
 * ビジネス的な有効時間
 */
@Embeddable
public class ValidTime {
    @Column
    private final LocalDateTime businessIn;
    @Column
    private final LocalDateTime businessOut;
    private static final LocalDateTime MAX = LocalDateTime.of(9999, 12, 31, 23, 59, 59);

    ValidTime(LocalDateTime businessIn, LocalDateTime businessOut) {
        this.businessIn = businessIn;
        this.businessOut = businessOut;
    }

    public static ValidTime create(LocalDateTime in, LocalDateTime out) {
        return new ValidTime(in, out);
    }

    public static ValidTime createInfinity(LocalDateTime in) {
        return create(in, LocalDateTime.MAX);
    }

    public ValidTime terminate(LocalDateTime time) {
        return new ValidTime(businessIn, time);
    }

    public LocalDateTime businessIn() {
        return businessIn;
    }

    public LocalDateTime businessOut() {
        return businessOut;
    }
}