カプセル化インタフェース戻りクラス

public class ResultSupport implements Serializable {
    private static final long serialVersionUID = -2235152751651905167L;
    private boolean success = true;
    private String resultMsg;
    private int errorCode;

    public ResultSupport() {

    }

    public boolean isSuccess() {
        return success;
    }

    public void setSuccess(boolean success) {
        this.success = success;
    }

    public String getResultMsg() {
        return resultMsg;
    }

    public void setResultMsg(String resultMsg) {
        this.resultMsg = resultMsg;
    }

    public void setErrorCode(ErpgwReturnCode errorCode) {
        this.resultMsg = errorCode.getDesc();
        this.success = false;
        this.errorCode = errorCode.getCode();
    }

    public int getErrorCode() {
        return errorCode;
    }

    public void setErrorCode(int errorCode) {
        this.errorCode = errorCode;
    }

}

public class BaseResult<T> extends ResultSupport {
    private static final long serialVersionUID = 4999091548448313101L;
    protected T value;

    public T getValue() {
        return value;
    }

    public void setValue(T value) {
        this.value = value;
    }



    public static <U> BaseResult<U> buildFailResult(int errorCode, String errorMsg, U value) {
        BaseResult<U> baseResult = new BaseResult<U>();
        baseResult.setSuccess(false);
        baseResult.setErrorCode(errorCode);
        baseResult.setValue(value);
        baseResult.setResultMsg(errorMsg);

        return baseResult;
    }

    public static <U> BaseResult<U> buildSuccessResult(U value) {
        BaseResult<U> baseResult = new BaseResult<U>();
        baseResult.setSuccess(true);
        baseResult.setValue(value);
        return baseResult;
    }
}

public class BasePageResult<T> extends ResultSupport {
    private static final long serialVersionUID = 7378807577314788084L;
    protected int pageNo = 1;
    protected int pageSize;
    protected int totalCount;
    protected boolean hasNext;
    protected List<T> list;

    public List<T> getList() {
        return list;
    }

    public void setList(List<T> list) {
        this.list = list;
    }

    public int getPageNo() {
        return pageNo;
    }

    public void setPageNo(int pageNo) {
        if (pageNo <= 0) {
            pageNo = 1;
        }
        this.pageNo = pageNo;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        if (pageSize < 0) {
            pageSize = 0;
        }
        this.pageSize = pageSize;
    }

    public int getStartRow() {
        return (pageNo - 1) * pageSize;
    }

    public int getTotalCount() {
        return totalCount;
    }

    public void setTotalCount(int totalCount) {
        this.totalCount = totalCount;
    }

    public boolean isHasNext() {
        return hasNext;
    }

    public void setHasNext(boolean hasNext) {
        this.hasNext = hasNext;
    }
}