我正在一个Java（Web）应用程序中进行数据库的DAO实现。只是我遇到了点小问题。
当前代码：
Account.java:

package beans;

public class Account {
    private int accountId;
    private String name;
    private String password;
    private String email;

    public Account() {

    }

    public Account(final String name, final String password, final String email) {
        this.name = name;
        this.password = password;
        this.email = email;
    }

    public int getAccountId() {
        return accountId;
    }

    public void setAccountId(int accountId) {
        this.accountId = accountId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

DAO.java:

package dao;

import java.util.Collection;

public interface DAO<T> {
    public int insert(T t);

    public boolean update(T t);

    public T get();

    public Collection<T> search();

    public boolean delete(T t);
}

AccountDAO.java:

package dao;

import beans.Account;
import java.util.Collection;

public class AccountDAO implements DAO<Account> { 
    @Override
    public int insert(Account t) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean update(Account t) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Account get() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Collection<Account> search() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean delete(Account t) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}

问题是，我很确定我不想在DAO接口中使用SQL字符串，但接下来我会遇到如何正确实现get()和search()的问题？
由于它是一个通用接口，我还不能使用列名，我想将get()和search()方法保留在接口中，以确保它们将被实现，除非真的有必要将它们从接口中删除。
我的建议是通过一个范围或一个未完全填充的T类对象进行搜索。因此，如果你想获得name=x的帐户，那么你会有这样的代码：

AccountDAO accountDAO = DAOFactory.getAccountDAO();
Account result = accountDAO.get(new Account(x, null, null));

但我不确定这是否是最好的解决方案，请帮助我。
问候。