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我正在嘗試編寫一個Dropbox爬網程序的測試。嘗試合併時嘗試鎖定表的超時
我已經設置了一個Fixture，它將數據加載到數據庫中。
Fixtures.deleteDatabase();
Fixtures.loadModels("testusers.yaml");
問題達到代碼
da = da.merge(); //exceptions gets thrown here
時發生。它拋出一個JdbcSQLException：
org.h2.jdbc.JdbcSQLException: Timeout trying to lock table "USER"; SQL statement:
select user0_.id as id7_0_, user0_.activationSent as activati2_7_0_,
user0_.confirmationCode as confirma3_7_0_, user0_.email as email7_0_,
user0_.first_name as first5_7_0_, user0_.isAdmin as isAdmin7_0_,
user0_.lastLogin as lastLogin7_0_, user0_.last_name as last8_7_0_,
user0_.passwordHash as password9_7_0_,
user0_.recoverPasswordCode as recover10_7_0_,
user0_.referralCode as referra11_7_0_,
user0_.signupDate as signupDate7_0_ from User user0_ where user0_.id=? [50200-149]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:327)
at org.h2.message.DbException.get(DbException.java:167)
at org.h2.message.DbException.get(DbException.java:144)
at org.h2.table.RegularTable.doLock(RegularTable.java:499)
at org.h2.table.RegularTable.lock(RegularTable.java:433)
at org.h2.table.TableFilter.lock(TableFilter.java:140)
at org.h2.command.dml.Select.queryWithoutCache(Select.java:571)
at org.h2.command.dml.Query.query(Query.java:257)
at org.h2.command.dml.Query.query(Query.java:227)
at org.h2.command.CommandContainer.query(CommandContainer.java:78)
at org.h2.command.Command.executeQuery(Command.java:178)
at org.h2.jdbc.JdbcPreparedStatement.executeQuery(JdbcPreparedStatement.java:96)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1953)
at org.hibernate.loader.Loader.doQuery(Loader.java:802)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2037)
... 36 more
UpdateDropboxRowJob.java在異常得到投擲
package mashpan.crawl.jobs;
import play.Logger;
import play.jobs.*;
import models.DropboxAuthentication;
public class UpdateDropboxRowJob extends Job {
private DropboxAuthentication da;
private long count;
private boolean crawled;
public UpdateDropboxRowJob(DropboxAuthentication da, long count, boolean crawled) {
Logger.debug("[UpdateDropboxRowJob] ctor: "
+",[da=" + (da == null ? "null" : da.toString()) + "]"
+", count=[" + count + "]"
+", crawled=[" + crawled + "]"
);
this.da = da;
this.count = count;
this.crawled = crawled;
}
@Override
public void doJob() throws Exception {
Logger.debug("[UpdateDropboxRowJob] doJob: "
+"da=[" + (da == null ? "null" : da.toString()) + "]"
+"count=[" + count + "]"
+"crawled=[" + crawled + "]"
+"da.count"+(da == null ? "da==null" : da.count) + "]"
);
da = da.merge(); //exceptions gets thrown here
da.count = this.count;
da.crawled = this.crawled;
da.save();
}
}
@Entity
public class DropboxAuthentication extends Model {
public String type;
//public String email;
public String token_key;
public String token_secret;
public long count;
public boolean crawled;
public byte[] cipher;
public byte[] iv;
public long lastCrawlTime;
@OneToOne
public User user;
public DropboxAuthentication(String type, byte[] cipher, byte[] iv, String token_key, String token_secret, User u, Date issueDate)
{
this.type = type;
this.cipher = cipher;
this.iv = iv;
this.token_key = token_key;
this.token_secret = token_secret;
this.user = u;
}
@Override
public String toString() {
return "DropboxAuthentication [type=" + type + ", token_key="
+ token_key + ", token_secret=" + token_secret + ", count="
+ count + ", crawled=" + crawled + ", cipher="
+ Arrays.toString(cipher) + ", iv=" + Arrays.toString(iv)
+ ", lastCrawlTime=" + lastCrawlTime + ", user=" + user + "]";
}
}
我假設有一個與交易有問題，我試着做
JPA.em().getTransaction().commit();
，但我給我另一個例外，即事務沒有被激活。令人驚訝的是
JPA.em().getTransaction().begin();
JPA.em().getTransaction().commit();
引發一個異常，表明已經有一個事務正在運行。
所以可能是主要的問題是發揮如何處理在測試模式下交易
發揮框架：1.2.3
** * ** * ** * * * UPDATE ** * ** * ** * ****
我改變了我的application.conf從
%db=mem
到
%test.db=mysql://USER:[email protected]/development
在我得到一個不同的異常（在同一行中輸入以下如前）現在：
javax.persistence.EntityNotFoundException: Unable to find models.User with id 1
at org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:133)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:233)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1038)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:630)
at org.hibernate.type.EntityType.resolve(EntityType.java:438)
at org.hibernate.type.EntityType.replace(EntityType.java:298)
at org.hibernate.type.AbstractType.replace(AbstractType.java:176)
at org.hibernate.type.TypeHelper.replace(TypeHelper.java:212)
at org.hibernate.event.def.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:600)
at org.hibernate.event.def.DefaultMergeEventListener.mergeTransientEntity(DefaultMergeEventListener.java:337)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:303)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:258)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:84)
at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:867)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:851)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:855)
at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:686)
at play.db.jpa.GenericModel.merge(GenericModel.java:211)
at mashpan.crawl.jobs.UpdateDropboxRowJob.doJob(UpdateDropboxRowJob.java:33)
at play.jobs.Job.doJobWithResult(Job.java:50)
at play.jobs.Job.call(Job.java:146)
然而，看在分貝我看到用戶實際上堅持在那裏。
你不會碰巧有一個h2控制檯打開，你剛插入一個用戶而沒有提交，是嗎？ :) – 2012-03-12 11:46:42
nope，我不; ;-) – forste 2012-03-12 12:04:46