Java 带有一对多参数的Spring查询

我必须查询一些参数与给定值相似的网络元素，例如搜索“ExampleV”将返回带有“ExampleValue”的行

这目前正在工作，但端口参数在网元中映射为一对多

@Entity
public class NetworkElement {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    public long id;

    /**
     * The ip address of the NetworkElement. This should be unique
     */
    public String ip;

    /**
     * The port or NetworkElement
     */
    public int port;

    /**
     * The name this node is called. This is what the user want to see on the Gui for such NetworkElement
     */
    public String name;

    /**
     * Timestamp of the last alarm received for this NetworkElement
     */
    public long lastEventTimestamp;

    /**
     * Last read index from the alarm status table
     */
    public int lastReadIndex;

    public long latitude;

    public long longitude;

    public String address;

    public String upTime;


    @OneToMany(mappedBy = "node")
    public List<Port> ports;

    @ManyToOne
    @JoinColumn(name = "type_id")
    public NetworkElementType networkElementType;

    public NetworkElement(String ip, String name, long lastEventTimestamp, List<Port> ports, NetworkElementType networkElementType) {
        this.ip = ip;
        this.name = name;
        this.lastEventTimestamp = lastEventTimestamp;
        this.ports = ports;
        this.networkElementType = networkElementType;
    }


}

---

如何正确查询具有特定customerId端口的网络元素？

假设

端口

实体值被称为

customerId

，例如：

@Entity
class Port {
    private Integer customerId;
}

您需要一个新的

加入

并更改

的位置

：

@Query("SELECT ne FROM NetworkElement ne JOIN ne.ports port WHERE " +
    "ne.ip LIKE %:ip% AND " +
    "lower(ne.name) LIKE concat('%', lower(:name), '%') AND " +
    "lower(ne.networkElementType.type) LIKE concat('%', lower(:type), '%') AND " +
    "lower(ne.networkElementType.vendor) LIKE concat('%', lower(:vendor), '%') AND " +
    "lower(ne.networkElementType.version) LIKE concat('%', lower(:version), '%') AND "+
    "port.customerId LIKE concat('%', lower(:customerId), '%')")`

---

并删除

@Param（“port”）字符串port

实体端口有一个名为customerId的字段，该字段必须匹配。这意味着代码中的最后一行应该被删除，并且“str（port.value）像%：port%和“+应该是”str（port.customerId）像%：customerId%和“+是这样吗？是的！我将更改我的答案，我看不到最后一行。您是否仍应删除port.value？我只是想确认一下：）是的，删除了。我尝试了以下方法：@Query（“从NetworkElement ne中选择ne”+“加入ne.ports端口”+，其中“+”ne.ip类似%：ip%和“+”lower（ne.name）类似concat（“%”）、lower（：name）、“%”和“+”lower（ne.networkElementType）类似concat（“%”）、lower（：type）下（“%”、下（：vendor）、“%”和“+”下（ne.networkElementType.vendor）如concat（“%”）、下（：vendor）、“%”和“+”下（ne.networkElementType.version）如concat（“%”）、下（：version）、“%”和“+”下（port.customerId）如concat（“%”、下（：customerId）、“%”）

@Entity
class Port {
    private Integer customerId;
}

@Query("SELECT ne FROM NetworkElement ne JOIN ne.ports port WHERE " +
    "ne.ip LIKE %:ip% AND " +
    "lower(ne.name) LIKE concat('%', lower(:name), '%') AND " +
    "lower(ne.networkElementType.type) LIKE concat('%', lower(:type), '%') AND " +
    "lower(ne.networkElementType.vendor) LIKE concat('%', lower(:vendor), '%') AND " +
    "lower(ne.networkElementType.version) LIKE concat('%', lower(:version), '%') AND "+
    "port.customerId LIKE concat('%', lower(:customerId), '%')")`