Spring JPA deleteInBatch导致StackOverflow

Question

我有一个问题是使用deleteInBatch从db中删除项目.我有一个对象A有一个对象B列表,如:

class A {
private List <B>;
}

该列表包含7k多个元素.所以现在我必须删除A及其所有元素.我试过通过deleteInBatch,但我得到了

org.springframework.web.util.NestedServletException: Handler processing failed;
nested exception is java.lang.StackOverflowError

使用sipmle delete方法删除项目有效,但需要5分钟以上.我的删除代码是:

public void delete(Long id) {
A a = repository.findOne(id);
deleteElements(a);
repository.delete(a);
}

private void deleteElements(A a) {
repository.deleteInBatch(a.getListOfB);
}

有没有一个很好的解决方案来加快删除过程或如何更改,以便deleteinbatch不占用所有休眠堆栈 - 不增加它？

完整的Stacktrace:

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.StackOverflowError
org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1259)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:163)
net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:206)
net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:179)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)

等等...

root cause

java.lang.StackOverflowError
org.hibernate.hql.internal.ast.tree.SqlNode.<init>(SqlNode.java:34)
sun.reflect.GeneratedConstructorAccessor36.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:526)
java.lang.Class.newInstance(Class.java:379)
org.hibernate.hql.internal.ast.SqlASTFactory.create(SqlASTFactory.java:256)
antlr.ASTFactory.create(ASTFactory.java:153)
antlr.ASTFactory.create(ASTFactory.java:186)
org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2018)
org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2026)
org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:2026)

等等....

Answer 1

在您的情况下，删除查询将通过如下形式转换JpaRepository。

delete from [table_name] where [criteria] = id or [criteria] = id (and so on...)

jvm引发堆栈溢出错误，因为HqlSqlBaseWalker试图搜索所有or（或基本上是where条件）语句

我猜，就您而言，您可以尝试生成自己的删除查询然后执行它，或者可以尝试将数据拆分为几个列表。