JDBC，Elasticsearch和Postgresql Json数据类型

Question

• PostgreSQL：9.3.2
  • Elasticsearch：0.90
  • jprante / elasticsearch-river-jdbc：2.2.2
  • PostgreSQL JDBC：9.3-1100 JDBC 41

我正在尝试使用elasticsearch river将一个postgresql Json数据类型列放入elasticsearch中。

这里是创造的河

curl -XPUT 'localhost:9200/_river/business_river/_meta' -d '{
          "type" : "jdbc",
          "jdbc" : {
              "driver" : "org.postgresql.Driver",
              "url" : "jdbc:postgresql://localhost:5432/business",
              "user" : "postgres",
              "password" : "",
              "sql" : "select id, active, companies->'sic'->>'national_number' AS sic, companies->'names'->>'name' AS name, companies->'address'->>'country' AS country from businesses.business",
              "index" : "business",
              "type" : "jdbc"
     }
}'

河边抱怨说“名称”列不存在！该查询在Postgresql中工作，这使我认为JDBC或river不支持Json数据类型。

这是完整的消息

[2014-01-13 07:47:27,919][INFO ][org.xbib.elasticsearch.river.jdbc.JDBCRiver] [Brigade] [jdbc][business_river] starting JDBC river: URL [jdbc:postgresql://localhost:5432/business], driver [org.postgresql.Driver], strategy [oneshot], index [jdbc]/[jdbc]
[2014-01-13 07:47:33,281][ERROR][org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverFlow] ERROR: column "names" does not exist
  Position: 31
org.postgresql.util.PSQLException: ERROR: column "names" does not exist
  Position: 31
        at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2161)
        at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1890)
        at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)                                                                                         
        at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:560)                                                                                 
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:403)                                                                        
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:283)                                                                            
        at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverSource.executeQuery(SimpleRiverSource.java:417)                                                         
        at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverSource.fetch(SimpleRiverSource.java:241)                                                                
        at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverFlow.move(SimpleRiverFlow.java:184)                                                                     
        at org.xbib.elasticsearch.river.jdbc.strategy.oneshot.OneShotRiverFlow.run(OneShotRiverFlow.java:38)                                                                    
        at java.lang.Thread.run(Thread.java:744)

Answer 1

感谢克雷格·林格（Craig Ringer）向我指出了真正的问题，我改写了我的河，用“ \ u0027”替换了PostgreSQL
json查询中的简单引号，现在一切正常