在 JOOQ 中使用 PL/SQL 函数

Question

我需要调用以表格形式返回对象类型的 PL/SQL 函数。 基本上像：

select * from TABLE(get_druck_variablen(123456);

到目前为止，在 JOOQ 中使用本机查询并且它可以工作：

final Result<Record> result = create.fetch("select * from TABLE(myschema.get_druck_variablen(" + id + "))");

但我想在 JOOQ 中正确地做到这一点。

1) 我来了：

final GetDruckVariablen getDruckVariablen = new GetDruckVariablen();
getDruckVariablen.setPId(id);
getDruckVariablen.execute(); 

但后来我得到了这个异常

Method threw 'java.lang.NullPointerException' exception. Cannot evaluate de.company.jooq.routines.GetDruckVariablen.toString() 

2) 然后我尝试了这个：

  final TabOtDruckVariablenRecord getDruckVariablen = Routines.getDruckVariablen(create.configuration(), id).;

然后我得到了这个异常：

Caused by: org.springframework.jdbc.BadSqlGrammarException: jOOQ; bad SQL grammar [select "array_table"."COLUMN_VALUE" from table ("MYSCHEMA"."GET_DRUCK_VARIABLEN"(?)) "array_table"]; nested exception is java.sql.SQLSyntaxErrorException: ORA-00904: "array_table"."COLUMN_VALUE": ungültiger Bezeichner 

有关信息，这是我的 PL/SQL 函数：

create or replace FUNCTION      get_druck_variablen(p_id IN vk_types.t_id) RETURN myschema.tab_ot_druck_variablen 
PIPELINED 
IS 
....
BEGIN 
END get_druck_variablen; 

对象类型：

create or replace TYPE      ot_druck_variablen FORCE AS OBJECT 
( 
  ob_id   NUMBER(9, 0), 
  ob_txv_name VARCHAR2(100), 
  ob_txv_wert VARCHAR2(2000) 
)

表格类型：

create or replace TYPE      tab_ot_druck_variablen AS TABLE OF myschema.ot_druck_variablen 

我真的希望有人可以帮助我。

提前致谢。

最好的问候

伊万

---

为答案添加了 Stake 跟踪：

    final GetDruckVariablen getDruckVariablen = new GetDruckVariablen();
    getDruckVariablen.setPId(id);
    getDruckVariablen.execute(dslContext.configuration()); 

堆栈跟踪：

      2017-08-16 22:25:16.039 ERROR 4928 --- [  restartedMain] o.s.boot.SpringApplication               : Application startup failed 

      java.lang.IllegalStateException: Failed to execute CommandLineRunner 
            at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:735) 
            at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:716) 
            at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:703) 
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:304) 
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) 
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) 
            at de.mycompany.druckauftrag.DruckAuftragApplication.main(DruckAuftragApplication.java:31) 
            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
            at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
            at java.lang.reflect.Method.invoke(Method.java:498) 
            at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) 
      Caused by: org.springframework.jdbc.BadSqlGrammarException: jOOQ; bad SQL grammar [select "array_table"."COLUMN_VALUE" from table ("MYSCHEMA"."GET_DRUCK_VARIABLEN"(?)) "array_table"]; nested exception is java.sql.SQLSyntaxErrorException: ORA-00904: "array_table"."COLUMN_VALUE": ungültiger Bezeichner 

            at org.jooq_3.9.3.ORACLE.debug(Unknown Source) 
            at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:231) 
            at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73) 
            at org.springframework.boot.autoconfigure.jooq.JooqExceptionTranslator.translate(JooqExceptionTranslator.java:92) 
            at org.springframework.boot.autoconfigure.jooq.JooqExceptionTranslator.handle(JooqExceptionTranslator.java:81) 
            at org.springframework.boot.autoconfigure.jooq.JooqExceptionTranslator.exception(JooqExceptionTranslator.java:54) 
            at org.jooq.impl.ExecuteListeners.exception(ExecuteListeners.java:245) 
            at org.jooq.impl.AbstractQuery.execute(AbstractQuery.java:364) 
            at org.jooq.impl.AbstractResultQuery.fetch(AbstractResultQuery.java:315) 
            at org.jooq.impl.SelectImpl.fetch(SelectImpl.java:2708) 
            at org.jooq.impl.AbstractRoutine.executeSelectFromOracle(AbstractRoutine.java:362) 
            at org.jooq.impl.AbstractRoutine.execute(AbstractRoutine.java:318) 
            at org.jooq.impl.AbstractRoutine.execute(AbstractRoutine.java:287) 
            at de.mycompany.druckauftrag.container.cask.KfzParam.getDruckVariablen(KfzParam.java:59) 
            at de.mycompany.druckauftrag.container.cask.KfzParam.befuelleVariablen(KfzParam.java:36) 
            at de.mycompany.druckauftrag.service.DokumentService.erzeugeDokument(DokumentService.java:55) 
            at de.mycompany.druckauftrag.service.XmlCreator.createXml(XmlCreator.java:33) 
            at de.mycompany.druckauftrag.DruckAuftragApplication.run(DruckAuftragApplication.java:46) 
            at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:732) 
            ... 11 common frames omitted 
      Caused by: java.sql.SQLSyntaxErrorException: ORA-00904: "array_table"."COLUMN_VALUE": ungültiger Bezeichner 

            at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) 
            at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) 
            at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059) 
            at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522) 
            at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257) 
            at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587) 
            at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225) 
            at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53) 
            at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774) 
            at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925) 
            at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111) 
            at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798) 
            at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:4901) 
            at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1385) 
            at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) 
            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
            at java.lang.reflect.Method.invoke(Method.java:498) 
            at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114) 
            at com.sun.proxy.$Proxy94.execute(Unknown Source) 
            at org.jooq.tools.jdbc.DefaultPreparedStatement.execute(DefaultPreparedStatement.java:195) 
            at org.jooq.impl.AbstractResultQuery.execute(AbstractResultQuery.java:270) 
            at org.jooq.impl.AbstractQuery.execute(AbstractQuery.java:349) 
            ... 22 common frames omitted

Answer 1

我怀疑您遇到了错误（现在可能已修复）。一旦我知道您使用的是什么 jOOQ 版本，我将通过相关 GitHub 问题的链接更新我的答案。

关于 1) 和NullPointerException

您尝试 1) 中出现 NPE 的可能原因：

final GetDruckVariablen getDruckVariablen = new GetDruckVariablen();
getDruckVariablen.setPId(id);
getDruckVariablen.execute(); 

... 可能是因为您没有将 Configuration 传递给 execute() 方法。 Configurationless 方法假定您的例行调用先前已“附加”到 Configuration。但最好明确传递：

getDruckVariablen.execute(configuration); 

关于您的本机查询用法的旁注：

您肯定知道这一点，但我必须为以后的读者提一下。除了对游标缓存施加压力之外，您对 jOOQ 纯 SQL API 的使用还存在一定的 SQL 注入风险：

final Result<Record> result = create.fetch(
  "select * from TABLE(myschema.get_druck_variablen(" + id + "))");

最好使用绑定变量，这对于普通 SQL 也是完全可能的：

final Result<Record> result = create.fetch(
  "select * from TABLE(myschema.get_druck_variablen(?))", id);