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Postgres中针对JSONB列的JPA查询

javahibernatepostgresqljpa
3
我将尝试使用JPA为Postgres DB中的JSONB列创建查询。该查询基本上与Postgres JSON文档中的示例相似。请注意，保留HTML标记。
-- Find documents in which the key "company" has value "Magnafone"
SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @> '{"company": "Magnafone"}';

其中jdoc是表api中的JSONB列。

到目前为止，执行此查询很容易且没有问题。但是，如果我尝试将查询参数化，我就会卡住。

以下是我尝试过的几个查询：

1）这不起作用，因为在“-”符号之间未识别到“？”：

String name= "Magnafone";

JPA.em().createNativeQuery("SELECT jdoc FROM api
WHERE jdoc @> '{\"name\": ?}'", Record.class)
.setParameter(1, name)

错误：

    play.api.Application$$anon$1: Execution exception[[IllegalArgumentException: org.hibernate.QueryParameterException: Position beyond number of declared ordinal p
arameters. Remember that ordinal parameters are 1-based! Position: 2]]
        at play.api.Application$class.handleError(Application.scala:293) ~[play_2.10-2.2.3.jar:2.2.3]
        at play.api.DefaultApplication.handleError(Application.scala:399) [play_2.10-2.2.3.jar:2.2.3]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:
2.2.3]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:
2.2.3]
        at scala.Option.map(Option.scala:145) [scala-library-2.10.3.jar:na]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3.applyOrElse(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:2.2.3]
Caused by: java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: Position beyond number of declared ordinal parameters. Remember that ordin
al parameters are 1-based! Position: 2
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:451) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:72) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at models.lol.player.IPlayer.getPlayerByName(IPlayer.java:22) ~[na:na]
        at controllers.LoadTeamController.loadTeamData(LoadTeamController.java:23) ~[na:na]
        at Routes$$anonfun$routes$1$$anonfun$applyOrElse$2$$anonfun$apply$2.apply(routes_routing.scala:57) ~[na:na]
        at Routes$$anonfun$routes$1$$anonfun$applyOrElse$2$$anonfun$apply$2.apply(routes_routing.scala:57) ~[na:na]
Caused by: org.hibernate.QueryParameterException: Position beyond number of declared ordinal parameters. Remember that ordinal parameters are 1-based! Position:
 2
        at org.hibernate.engine.query.spi.ParameterMetadata.getOrdinalParameterDescriptor(ParameterMetadata.java:80) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Fina
l]
        at org.hibernate.engine.query.spi.ParameterMetadata.getOrdinalParameterExpectedType(ParameterMetadata.java:86) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Fi
nal]
        at org.hibernate.internal.AbstractQueryImpl.determineType(AbstractQueryImpl.java:450) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.internal.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:422) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:445) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:72) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]</code>

2) 我在另一个SO线程中发现了这个。但是不起作用，因为||出现在查询中并引发了SQL异常。

JPA.em().createNativeQuery("SELECT jdoc FROM api 
WHERE jdoc @> '{\"name\": ' || :name ||'}'", Record.class)
.setParameter("name", name)

错误：

    play.api.Application$$anon$1: Execution exception[[IllegalArgumentException: org.hibernate.QueryParameterException: Position beyond number of declared ordinal p
arameters. Remember that ordinal parameters are 1-based! Position: 2]]
        at play.api.Application$class.handleError(Application.scala:293) ~[play_2.10-2.2.3.jar:2.2.3]
        at play.api.DefaultApplication.handleError(Application.scala:399) [play_2.10-2.2.3.jar:2.2.3]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:
2.2.3]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:
2.2.3]
        at scala.Option.map(Option.scala:145) [scala-library-2.10.3.jar:na]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3.applyOrElse(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:2.2.3]
Caused by: java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: Position beyond number of declared ordinal parameters. Remember that ordin
al parameters are 1-based! Position: 2
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:451) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:72) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at models.lol.player.IPlayer.getPlayerByName(IPlayer.java:22) ~[na:na]
        at controllers.LoadTeamController.loadTeamData(LoadTeamController.java:23) ~[na:na]
        at Routes$$anonfun$routes$1$$anonfun$applyOrElse$2$$anonfun$apply$2.apply(routes_routing.scala:57) ~[na:na]
        at Routes$$anonfun$routes$1$$anonfun$applyOrElse$2$$anonfun$apply$2.apply(routes_routing.scala:57) ~[na:na]
Caused by: org.hibernate.QueryParameterException: Position beyond number of declared ordinal parameters. Remember that ordinal parameters are 1-based! Position:
 2
        at org.hibernate.engine.query.spi.ParameterMetadata.getOrdinalParameterDescriptor(ParameterMetadata.java:80) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Fina
l]
        at org.hibernate.engine.query.spi.ParameterMetadata.getOrdinalParameterExpectedType(ParameterMetadata.java:86) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Fi
nal]
        at org.hibernate.internal.AbstractQueryImpl.determineType(AbstractQueryImpl.java:450) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.internal.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:422) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:445) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:72) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]

我尝试了一些其他方法，但Postgres或JPA在某种程度上出现错误，并且在使用JPA的参数化时未能获取JSON参数。
3)
JPA.em().createNativeQuery("SELECT jdoc FROM api 
WHERE jdoc @> '{\"name\": ' || ? ||'}'", Record.class)
.setParameter(1", name)

错误：

    play.api.Application$$anon$1: Execution exception[[PersistenceException: org.hibernate.exception.DataException: FEHLER: ung³ltige Eingabesyntax f³r Typ json
  Detail: Die Eingabezeichenkette endete unerwartet.
  Position: 62
  Where: JSON-Daten, Zeile 1: {"name": ]]
        at play.api.Application$class.handleError(Application.scala:293) ~[play_2.10-2.2.3.jar:2.2.3]
        at play.api.DefaultApplication.handleError(Application.scala:399) [play_2.10-2.2.3.jar:2.2.3]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:
2.2.3]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:
2.2.3]
        at scala.Option.map(Option.scala:145) [scala-library-2.10.3.jar:na]
        at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$3.applyOrElse(PlayDefaultUpstreamHandler.scala:264) [play_2.10-2.2.3.jar:2.2.3]
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.DataException: FEHLER: ung³ltige Eingabesyntax f³r Typ json
  Detail: Die Eingabezeichenkette endete unerwartet.
  Position: 62
  Where: JSON-Daten, Zeile 1: {"name":
        at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1377) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1300) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:266) ~[hibernate-entitymanager-4.1.8.Final.jar:4.1.8.Final]
        at models.lol.player.IPlayer.getPlayerByName(IPlayer.java:24) ~[na:na]
        at controllers.LoadTeamController.loadTeamData(LoadTeamController.java:23) ~[na:na]
        at Routes$$anonfun$routes$1$$anonfun$applyOrElse$2$$anonfun$apply$2.apply(routes_routing.scala:57) ~[na:na]
Caused by: org.hibernate.exception.DataException: FEHLER: ung³ltige Eingabesyntax f³r Typ json
  Detail: Die Eingabezeichenkette endete unerwartet.
  Position: 62
  Where: JSON-Daten, Zeile 1: {"name":
        at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:134) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final
]
        at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) ~[hibernate-core-4.1.8.Final.jar:4.1.8.
Final]
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
        at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129) ~[hibernate-core-4.
1.8.Final.jar:4.1.8.Final]
        at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81) ~[hibernate-core-4.1.8.Final.jar:4.1.8.Final]
Caused by: org.postgresql.util.PSQLException: FEHLER: ung³ltige Eingabesyntax f³r Typ json
  Detail: Die Eingabezeichenkette endete unerwartet.
  Position: 62
  Where: JSON-Daten, Zeile 1: {"name":
        at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2157) ~[postgresql-9.2-1003-jdbc4.jar:na]
        at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1886) ~[postgresql-9.2-1003-jdbc4.jar:na]
        at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255) ~[postgresql-9.2-1003-jdbc4.jar:na]
        at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:555) ~[postgresql-9.2-1003-jdbc4.jar:na]
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417) ~[postgresql-9.2-1003-jdbc4.jar:na]
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:302) ~[postgresql-9.2-1003-jdbc4.jar:na]

FYI：这个有效（放心，我不会使用它）：

JPA.em().createNativeQuery("SELECT jdoc->'guid', jdoc->'name' FROM api 
WHERE jdoc @> '{\"company\": \""+company+"\"}'", Record.class)

此外：我正在使用createNativeQuery，因为JPA无法识别@>操作符。
谢谢。
Timo
尝试使用||方法，但应该是类似于'{\"company\": \"' || ? || '\"}'的东西。当然，使用setParameter(1, company)。 - RealSkeptic
还是不行 :/ 他抱怨 "-符号。如果我尝试 '{\"company\": ' || ? || '}'，错误会提示输入字符串意外结束。 - Timo
抱歉，是复制粘贴错误。我会修复它的。这不是我正在使用的代码。我很快就会发布确切的错误信息。 - Timo
2
尝试使用 "... WHERE jdoc @> cast('{\"company\":' || to_json(cast(? as text)) || '}' as json)"（如果适用，则在最后一个转换中使用 jsonb）。 - pozs
谢谢pozs。这个方法可行！如果你把它作为答案发布，我可以接受它。 - Timo
显示剩余2条评论
1个回答
0

pozs在评论中发布了答案：

尝试使用"... WHERE jdoc @> cast('{\"company\":' || to_json(cast(? as text)) || '}' as json)"（如果适用，可以在最后一个cast处使用jsonb）。

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