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我目前正在使用 jdbc-river 从 Sql Server 数据库/表中读取数据。到目前为止，我已经为数据库中的每个表创建了一个单独的类型。作为我实现的下一步，我想使用父/子类型，以便我可以转换我的 sql 表之间的关系并存储它们。

Table1
Col_id| name| prop1|prop2|prop3

child_table1
col_id| table_id| child_prop1|child_prop2|child_prop3


curl -XPUT 'localhost:9200/_river/parent/_meta' -d '{
    "type" : "jdbc",
    "jdbc" : {
        "driver" : "com.mysql.jdbc.Driver",
        "url" : "jdbc:mysql://localhost:3306/test",
        "user" : "",
        "password" : "",
        "sql" : "select * from table1",
        "index" : "index1",
        "type" : "parent"
    }
}'

curl -XPUT 'localhost:9200/_river/child/_meta' -d '{
    "type" : "jdbc",
    "jdbc" : {
        "driver" : "com.mysql.jdbc.Driver",
        "url" : "jdbc:mysql://localhost:3306/test",
        "user" : "",
        "password" : "",
        "sql" : "select * from child_table1",
        "index" : "index1",
        "type" : "child"
    }
}'



curl -XPOST 'localhost:9200/_river/child/_mapping' -d '{
  "child":{
    "_parent": {"type": "parent"}
  }
}'

我想以以下格式存储我的数据

{
  "id": "1",
  "name": "A leading wordsmith",
  "prop1": "data",
  "prop2": "data",
  "prop3": "data",

  "child": [
    {
      "child_prop1": "data",
      "child_prop2": "data",
      "child_prop3": "data",
    }
    {
      "child_prop1": "data1",
      "child_prop2": "data1",
      "child_prop3": "data1",
    }
  ]
}

任何人都可以评论我如何使用 jdbc-rivers 将我的数据存储为上述场景的父/子类型。

更新 基于以下反馈是更新的映射和元数​​据。

curl -XPOST 'http://localhost:9200/library' -d '{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  },
  "mappings": {
    "person": {
      "properties": {
        "person_id": {
          "type": "integer"
        },
        "name": {
          "type": "string"
        }
      }
    },
    "work": {
      "_parent": {
        "type": "person"
      },
      "properties": {
        "person_id": {
          "type": "integer",
          "index": "not_analyzed"
        },
        "name": {
          "type": "string"
        },
        "genre": {
          "type": "string"
        },
        "publisher": {
          "type": "string"
        }
      }
    }
  }
}'

curl -XPUT localhost:9200/_river/person/_meta -d '{
  "type": "jdbc",
  "jdbc": {
    "driver": "com.microsoft.sqlserver.jdbc.SQLServerDriver",
    "url": "jdbc:sqlserver://127.0.0.1:1433;databaseName=blogcontext",
    "user": "sa",
    "password": "password",
    "sql": "select person_id as _id, name from person",
    "poll": "30s"
  },
  "index": {
    "index": "library",
    "type": "person",
    "bulk_size": 500,
    "autocommit": true
  }
}'

curl -XPUT localhost:9200/_river/work/_meta -d '{
  "type": "jdbc",
  "jdbc": {
    "driver": "com.microsoft.sqlserver.jdbc.SQLServerDriver",
    "url": "jdbc:sqlserver://127.0.0.1:1433;databaseName=blogcontext",
    "user": "sa",
    "password": "password",
    "sql": "select person_id as _parent,name,genre,publisher from work",
    "poll": "30s"
  },
  "index": {
    "index": "library",
    "type": "work",
    "bulk_size": 500,
    "autocommit": true
  }
}'

日志文件

   [2014-01-14 07:10:35,488][ERROR][OneShotRiverMouth        ] bulk [1] error
    org.elasticsearch.ElasticSearchIllegalArgumentException: Can't specify parent if no parent field has been configured
        at org.elasticsearch.action.index.IndexRequest.process(IndexRequest.java:597)
        at org.elasticsearch.action.bulk.TransportBulkAction.executeBulk(TransportBulkAction.java:165)
        at org.elasticsearch.action.bulk.TransportBulkAction.doExecute(TransportBulkAction.java:140)
        at org.elasticsearch.action.bulk.TransportBulkAction.doExecute(TransportBulkAction.java:63)
        at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)
        at org.elasticsearch.client.node.NodeClient.execute(NodeClient.java:92)
        at org.elasticsearch.client.support.AbstractClient.bulk(AbstractClient.java:149)
        at org.elasticsearch.action.bulk.BulkProcessor.execute(BulkProcessor.java:283)
        at org.elasticsearch.action.bulk.BulkProcessor.access$400(BulkProcessor.java:46)
        at org.elasticsearch.action.bulk.BulkProcessor$Flush.run(BulkProcessor.java:336)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)

谢谢

4

1 回答 1

9

假设您的表格如下所示：

table1
table_id| name| prop1|prop2|prop3

child_table1
child_id| table_id| child_prop1|child_prop2|child_prop3

您需要选择主行 ID 并将其命名为“_id”，您的父 ID 并将其命名为“_parent”

curl -XPUT 'localhost:9200/_river/parent/_meta' -d '{
    "type" : "jdbc",
    "jdbc" : {
        "driver" : "com.mysql.jdbc.Driver",
        "url" : "jdbc:mysql://localhost:3306/test",
        "user" : "",
        "password" : "",
        "sql" : "select table_id as _id, name, prop1, prop2, prop3 from table1",
        "index" : "index1",
        "type" : "parent"
    }
}'

curl -XPUT 'localhost:9200/_river/child/_meta' -d '{
    "type" : "jdbc",
    "jdbc" : {
        "driver" : "com.mysql.jdbc.Driver",
        "url" : "jdbc:mysql://localhost:3306/test",
        "user" : "",
        "password" : "",
        "sql" : "select child_id as _id, table_id as _parent, child_prop1, child_prop2, child_prop3 from child_table1",
        "index" : "index1",
        "type" : "child"
    }
}'

并像您一样定义映射父/子，然后就完成了。您现在可以使用父/子查询来查询父/子数据。

UPDATE: 我已经使用您最新的映射并创建了一个示例数据库来导入数据。一切正常，我可以索引父/子而没有任何错误。我正在使用 ES 0.9.5，jdbc-river 2.2.2。

于 2014-01-10T08:08:23.193 回答