我正在尝试使用 JPA 为 Postgres 数据库中的 JSONB 列创建查询。查询与 Postgres JSON Documentation 中的示例非常相似:
-- 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，没有问题。但是，如果我尝试参数化查询，我就会卡住。
以下是我尝试过的一些查询:
1) 这不起作用，因为 ?在'-符号之间无法识别:
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-Thread 中找到了这个。虽然不起作用，因为 ||出现在查询中并抛出 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]
我尝试了其他一些让 Postgres 或 JPA 以某种方式抛出的东西，并且在使用 JPA 的参数化时没有设法获取 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]
仅供引用:这有效(别担心，我没有使用它):
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 @>-Operator。
谢谢。
蒂莫
最佳答案
pozs 将答案作为评论发布:
Try "... WHERE jdoc @> cast('{\"company\":' || to_json(cast(? as text)) || '}' as json)" (or jsonb at the last cast, if that's appropriate).
关于java - JPA 查询 Postgres 中的 JSONB 列，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28284997/