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Cassandra UDT VerifierMappingExceptions

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我正在开发spring boot应用程序 . 它连接Apache Cassandra DB . 我在Cassandra创建了UDT . 尝试使用CassandraOperations保存数据时 . 我越来越异常了 . 我已经按照以下示例了解了Cassandra UDT .

http://www.devjavasource.com/cassandra/cassandra-udts-java-example/

Cassandra DB ：2.1.11

Exception:

org.springframework.data.cassandra.mapping.VerifierMappingExceptions: com.lab.model.OrderLine:
Cassandra entities must have the @Table, @Persistent or @PrimaryKeyClass Annotation
at org.springframework.data.cassandra.mapping.BasicCassandraPersistentEntityMetadataVerifier.verify(BasicCassandraPersistentEntityMetadataVerifier.java:45) ~[spring-data-cassandra-1.4.3.RELEASE.jar:na]

OrderLine java类只有@UDT而不是@ Table，@ Persistent或@PrimaryKeyClass Annotation

import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;

import org.springframework.cassandra.core.PrimaryKeyType;
import org.springframework.data.cassandra.mapping.PrimaryKeyColumn;
import org.springframework.data.cassandra.mapping.Table;


@Table("order")
public class Order {

    @PrimaryKeyColumn(name = "ord_id", ordinal = 0, type = PrimaryKeyType.PARTITIONED)
     private int ord_id;
     private List<OrderLine> order_line;  

}


import java.util.UUID;
import com.datastax.driver.mapping.annotations.UDT;
@UDT(name = "order_line")
public class OrderLine {

    private UUID po_line_nbr;
    private int whpk_qty;
}

pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.1.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>

    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-mapping</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-cassandra</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

如何解决这个问题 .

java spring-boot cassandra spring-data spring-data-cassandra

2 回答

  • 0

    我使用过Mapper概念 . 它运作良好 . 我已按照以下网址解决了我的问题 .

    https://datastax.github.io/java-driver/2.1.7/features/object_mapper/using/

https://datastax-oss.atlassian.net/browse/JAVA-590
    回复于
  • 0

    Spring Data Cassandra不支持Datastax的映射注释 .

    对Spring Data Cassandra的UDT支持即将与https://github.com/spring-projects/spring-data-cassandra/pull/84合并 .

    您将能够使用 @UserDefinedType 指定UDT并使用 UDTValue

    @UserDefinedType
public class Address {
  String city;
  String country;
}

@Table
public class Person {

  @Id String id;
  Address address;
  UDTValue genericUdt;
}

    期待Spring Data Cassandra 1.5将于今年年底发布（见https://github.com/spring-projects/spring-data-commons/wiki/Release-Train-Ingalls）

    回复于

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