我有两个桌子,
Table Customer
ID | CustomerNumber | Name | City | PhoneNumber
Table Accounts
ID | CustomerNumber | AccountNumber | Bank
两个表之间的关系是CustomerNumber
我的客户映射
public class Customer {
@Id
@Column(name = "ID")
private Integer ID;
@Column(name = "CustomerNumber")
private Integer customerNumber;
@Column(name = "Name")
private String name;
@Column(name = "City")
private String city;
@Column(name = "PhoneNumber")
private Integer phoneNumber;
@OneToMany(fetch = FetchType.LAZY, mappedBy = "customerNumber")
private Collection<Account> accounts;
}
和帐户映射
public class Account {
@Id
@Column(name = "ID")
private Integer ID;
@JoinColumn(name = "CustomerNumber", referencedColumnName="CustomerNumber")
@ManyToOne(fetch = FetchType.LAZY)
private Customer customer;
@Column(name = "AccountNumber")
private Integer accountNumber;
@Column(name = "Bank")
private String bank;
}
功能i DAO
public SearchResult listByCriteria(Customer object, int maxResults, String sortProperty, boolean ascending) {
SearcResult result = new SearchResult();
int resultSize = 0;
Criteria customerCriteria = ((Session)em.getDelegate()).createCriteria(Customer.class);
if(maxResults > 0) {
customerCriteria.setMaxResults(maxResults);
}
try {
if(object != null) {
customerCriteria = QueryHelper.getCustomerCriteria(object, customerCriteria, "");
resultSize = QueryHelperUtil.countResults(customerCriteria);
result.setSize(resultSize);
customerCriteria.setFirstResult(index);
QueryHelperUtil.sortResults(customerCriteria, sortProperty, ascending);
result.setList(customerCriteria.list());
}
} catch (Exception ex) {
error(ex);
}
return result;
}
QueryHelper.getCustomerCriteria
public static Criteria getCustomerCriteria(Customer object, Criteria criteria, String alias) {
if (object != null) {
if (object.getCustomerNumber() != null && object.getCustomerNumber() > 0) {
criteria.add(Restrictions.eq(alias+"customerNumber", object.getCustomerID()));
}
if (!StringUtil.isNullOrEmpty(object.getName())) {
criteria.add(Restrictions.like(alias+"name", QueryHelperUtil.createLikeStatement(object.getName())));
}
if (!StringUtil.isNullOrEmpty(object.getCity())) {
criteria.add(Restrictions.like(alias+"city", QueryHelperUtil.createLikeStatement(object.getCity())));
}
if (object.getPhoneNumber())) {
criteria.add(Restrictions.eq(alias+"phoneNumber", object.getPhoneNumber()));
}
}
}
现在,我只想搜索具有银行帐户的客户。我想在Hibernate中设置一个条件。但是我只是不知道该怎么做?
搜索时,您可以输入customerNumber,客户名称,电话号码和/或城市,并选择要显示的结果数。
首先,我以为我可以编写一个命名查询,但是随后您有了搜索结果编号,并且可以在不同的列上对结果进行排序。
我在这里搜索并查看了类似的不同问题,但我无法使其正常工作。 我试图在按条件列出客户的功能中添加一个帐户条件,但是它不起作用,我不知道这是否与该帐户成为托收人有关?
有人可以帮我吗?
我在方法listbycriteria中添加了以下内容
customerCritera.setFetchMode("accounts",FetchMode.JOIN);
Criteria accountCriteria = customerCriteria.createAlias("accounts","accounts");
if(Object!= null)和 resultSize = QueryHelperUtil.countResults(customerCriteria);
答案 0 :(得分:0)
我不完全知道您如何确定哪个帐户是银行帐户。 但是,您可能想要这样的东西:
Criteria criteria = getCurrentSession().createCriteria(Customer.class,"cust");
criteria.createAlias("cust.accounts","acc");
criteria.list();
要检查帐户是否具有银行号码,请添加:
.add(Restrictions.isNotNull("acc.bank"));
.list()之前