堆棧內存溢出
  簡體   English   中英

Datanucleus JDO在App Engine中將String映射到MySQL類型的bigint

[英]Datanucleus JDO map String to MySQL-type bigint in App Engine

 原文  2014-02-05 20:45:12  1   1    java/ google-app-engine/ jdo/ datanucleus/ google-cloud-sql

問題描述

我正在嘗試通過JDO從我的App Engine應用程序訪問數據存儲區和Cloud SQL。 如果我將主鍵類型設置得很長，那么一切都可以在Cloud SQL上正常運行，但是數據存儲無法正常工作；如果我將主鍵設置為String並想將其轉換為JDBC類型的“ Bigint”，則在嘗試訪問時出現以下錯誤雲端SQL： 

javax.jdo.JDOUserException: Exception thrown while loading remaining rows of query
at org.datanucleus.api.jdo.JDOAdapter.getUserExceptionForException(JDOAdapter.java:1085)
at org.datanucleus.store.rdbms.query.ForwardQueryResult.closingConnection(ForwardQueryResult.java:273)
at org.datanucleus.store.query.AbstractQueryResult.disconnect(AbstractQueryResult.java:108)
at org.datanucleus.store.rdbms.query.AbstractRDBMSQueryResult.disconnect(AbstractRDBMSQueryResult.java:69)
at org.datanucleus.store.rdbms.query.JDOQLQuery$2.transactionPreClose(JDOQLQuery.java:698)
at org.datanucleus.store.connection.AbstractManagedConnection.transactionPreClose(AbstractManagedConnection.java:92)
at org.datanucleus.store.connection.ConnectionManagerImpl$2.transactionPreRollBack(ConnectionManagerImpl.java:333)
at org.datanucleus.TransactionImpl.internalPreRollback(TransactionImpl.java:523)
at org.datanucleus.TransactionImpl.rollback(TransactionImpl.java:446)
at org.datanucleus.api.jdo.JDOTransaction.rollback(JDOTransaction.java:180)
at de.studienarbeit3.dokumente.DokumentListServlet.doPost(DokumentListServlet.java:82)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:97)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:487)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
NestedThrowablesStackTrace:
Somehow org.datanucleus.store.rdbms.mapping.BigIntRDBMSMapping.getLong() was called on the mapping for field="de.studienarbeit3.dokumente.Dokument.did", which should have been impossible!
org.datanucleus.exceptions.NucleusException: Somehow         org.datanucleus.store.rdbms.mapping.BigIntRDBMSMapping.getLong() was called on the mapping for field="de.studienarbeit3.dokumente.Dokument.did", which should have been impossible!
at org.datanucleus.store.mapped.mapping.AbstractDatastoreMapping.getLong(AbstractDatastoreMapping.java:110)
at org.datanucleus.store.rdbms.mapping.BigIntRDBMSMapping.getString(BigIntRDBMSMapping.java:182)
at org.datanucleus.store.mapped.mapping.SingleFieldMapping.getString(SingleFieldMapping.java:202)
at org.datanucleus.store.rdbms.fieldmanager.ResultSetGetter.fetchStringField(ResultSetGetter.java:137)
at org.datanucleus.identity.IdentityUtils.getApplicationIdentityForResultSetRow(IdentityUtils.java:125)
at org.datanucleus.store.rdbms.query.PersistentClassROF.getIdentityForResultSetRow(PersistentClassROF.java:542)
at org.datanucleus.store.rdbms.query.PersistentClassROF.getObjectForApplicationId(PersistentClassROF.java:473)
at org.datanucleus.store.rdbms.query.PersistentClassROF.getObject(PersistentClassROF.java:371)
at org.datanucleus.store.rdbms.query.ForwardQueryResult.nextResultSetElement(ForwardQueryResult.java:176)
at org.datanucleus.store.rdbms.query.ForwardQueryResult$QueryResultIterator.next(ForwardQueryResult.java:380)
at org.datanucleus.store.rdbms.query.ForwardQueryResult.processNumberOfResults(ForwardQueryResult.java:138)
at org.datanucleus.store.rdbms.query.ForwardQueryResult.advanceToEndOfResultSet(ForwardQueryResult.java:159)
at org.datanucleus.store.rdbms.query.ForwardQueryResult.closingConnection(ForwardQueryResult.java:261)
at org.datanucleus.store.query.AbstractQueryResult.disconnect(AbstractQueryResult.java:108)
at org.datanucleus.store.rdbms.query.AbstractRDBMSQueryResult.disconnect(AbstractRDBMSQueryResult.java:69)
at org.datanucleus.store.rdbms.query.JDOQLQuery$2.transactionPreClose(JDOQLQuery.java:698)
at org.datanucleus.store.connection.AbstractManagedConnection.transactionPreClose(AbstractManagedConnection.java:92)
at org.datanucleus.store.connection.ConnectionManagerImpl$2.transactionPreRollBack(ConnectionManagerImpl.java:333)
at org.datanucleus.TransactionImpl.internalPreRollback(TransactionImpl.java:523)
at org.datanucleus.TransactionImpl.rollback(TransactionImpl.java:446)
at org.datanucleus.api.jdo.JDOTransaction.rollback(JDOTransaction.java:180)
at de.studienarbeit3.dokumente.DokumentListServlet.doPost(DokumentListServlet.java:82)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:97)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:487)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

我的package.jdo如下： 

  <jdo>
    <package name="de.studienarbeit3.dokumente">
        <class name="Autor" detachable="true" identity-type="application">
            <datastore-identity value-strategy="identity"/>
            <field name="aid" primary-key="true" persistence-modifier="persistent" value-strategy="identity"/>
            <field name="vorname"/>
            <field name="nachname" />
            <field name="dokumente" />

        </class>
        <class name="Dokument" detachable="true" identity-type="application">
            <datastore-identity value-strategy="identity"/>
            <field name="did" primary-key="true" persistence-modifier="persistent" value-strategy="identity">
            </field>
            <field name="autor"/>
            <field name="titel"/>
            <field name="text"/>
            <field name="datum"/>

        </class>
    </package>
</jdo>

而package-sql.orm是這樣的： 

<orm>
    <package name="de.studienarbeit3.dokumente">
        <class name="Autor" detachable="true" persistence-modifier="persistence-capable" table="Autor">
            <datastore-identity value-strategy="identity"/>
            <field name="aid" primary-key="true" persistence-modifier="persistent" value-strategy="identity">
                <column name="aid" jdbc-type="bigint" length="20"/>
            </field>
            <field name="vorname" persistence-modifier="persistent">
                <column name="vorname"/>
            </field>    
            <field name="nachname" persistence-modifier="persistent">
                <column name="nachname"/>
            </field>
            <field name="dokumente" persistence-modifier="persistent" mapped-by="autor">
                <collection element-type="de.studienarbeit3.dokumente.Dokument"/>
            </field>
        </class>
        <class name="Dokument"  detachable="true" persistence-modifier="persistence-capable" table="Dokument">
            <datastore-identity />
            <field name="did" primary-key="true" persistence-modifier="persistent" value-strategy="identity">
                <column name="did" jdbc-type="bigint" length="20" />
            </field>
            <field name="autor" persistence-modifier="persistent" default-fetch-group="true">
                <column name="autor" jdbc-type="bigint" length="20"/>
                <foreign-key name="DOKUMENTAUTOR_FK" delete-action="restrict"/>
            </field>
            <field name="titel" persistence-modifier="persistent">
                <column name="titel"/>
            </field>
            <field name="text" persistence-modifier="persistent">
                <column name="text"/>
            </field>
            <field name="datum" persistence-modifier="persistent">
                <column name="datum"/>
            </field>
        </class>
    </package>
</orm>

有沒有可能解決此問題的方法？ 我嘗試了此插件，但未成功： http : //blog.wp.weightpoint.se/2012/03/01/portable-owned-jdo-relations-appengine/

根據此http://www.datanucleus.org/servlet/jira/browse/NUCRDBMS-597，它已在Datanucleus 3.1.0.m4中修復。 GAE有3.1.3。 而且不起作用。 任何幫助都會非常有幫助，謝謝

1 個解決方案

解決方案1
 1 已采納  2014-02-06 06:06:35

首先，您使用的是舊的不受支持的版本。 其次，如果您檢查JIRA，您還會看到http://www.datanucleus.org/servlet/jira/browse/NUCRDBMS-705

解決方案：使用最新版本（是的，“ GAE CloudSQL”可能會打包一些較舊的版本，因為他們的GAE / Datastore插件需要使用該版本，但是您可以輕松地在不需要它們的插件的情況下將新版本與MySQL一起使用）

暫無
暫無

聲明:本站的技術帖子網頁，遵循CC BY-SA 4.0協議，如果您需要轉載，請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.

相關問題 Google App Engine上的Datanucleus / JDO Level 2緩存 Datanucleus JDO中的Map屬性 使用DataNucleus JDO更新Google App Engine中的子對象 將應用程序引擎JDO應用程序移植到MySql后端 JDO關系 - App Engine Datanucleus JDO Mongodb - 地圖值中抽象的子項未持久化 如何使用JDO和DataNucleus在MySQL 5.5中設置變量？ 使用Datanucleus JDO的Servlet無法找到MySQL驅動程序 Google App Engine JDO錯誤 Google App Engine JDO問題
相關標簽
 
粵ICP備18138465號  © 2020-2024 STACKOOM.COM