jdbc - Play フレームワーク: H2 インメモリ データベースを使用してシーケンス nextval を取得中にエラーが発生しました

Question

タイトルが示すように、メモリ内に H2 がある FakeApplication を使用して Play 2.0.1 テストを実行するとエラーが発生します。

基本的な単体テストをセットアップしました。

public class ModelTest {
    @Test
    public void checkThatIndustriesExist() {
        running(fakeApplication(inMemoryDatabase()), new Runnable() {
            public void run() {
                Industry industry = new Industry();
                industry.name = "Some name";
                industry.shortname = "some-name";
                industry.save();
                assertThat(Industry.find.all()).hasSize(1);
            }
        });
    }

次の例外が発生します。

[info] test.ModelTest
[error] Test test.ModelTest.checkThatIndustriesExist failed: Error getting sequence nextval
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.getMoreIds(SequenceIdGenerator.java:213)
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.loadMoreIds(SequenceIdGenerator.java:163)
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.nextId(SequenceIdGenerator.java:118)
[error]     at com.avaje.ebeaninternal.server.deploy.BeanDescriptor.nextId(BeanDescriptor.java:1218)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.setIdGenValue(DefaultPersister.java:1304)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.insert(DefaultPersister.java:403)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.saveEnhanced(DefaultPersister.java:345)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.saveRecurse(DefaultPersister.java:315)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.save(DefaultPersister.java:282)
[error]     at com.avaje.ebeaninternal.server.core.DefaultServer.save(DefaultServer.java:1577)
[error]     at com.avaje.ebeaninternal.server.core.DefaultServer.save(DefaultServer.java:1567)
[error]     at com.avaje.ebean.Ebean.save(Ebean.java:538)
[error]     at play.db.ebean.Model.save(Model.java:76)
[error]     at test.ModelTest$1.run(ModelTest.java:24)
[error]     at play.test.Helpers.running(Helpers.java:277)
[error]     at test.ModelTest.checkThatIndustriesExist(ModelTest.java:21)
[error]     ...
[error] Caused by: org.h2.jdbc.JdbcSQLException: Syntax Fehler in SQL Befehl "SELECT INDUSTRY_SEQ.NEXTVAL UNION[*] SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL "; erwartet "identifier"
[error] Syntax error in SQL statement "SELECT INDUSTRY_SEQ.NEXTVAL UNION[*] SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL "; expected "identifier"; SQL statement:
[error] select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval [42001-158]
[error]     at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
[error]     at org.h2.message.DbException.get(DbException.java:169)
[error]     at org.h2.message.DbException.getSyntaxError(DbException.java:194)
[error]     at org.h2.command.Parser.readColumnIdentifier(Parser.java:2777)
[error]     at org.h2.command.Parser.readTermObjectDot(Parser.java:2336)
[error]     at org.h2.command.Parser.readTerm(Parser.java:2453)
[error]     at org.h2.command.Parser.readFactor(Parser.java:2035)
[error]     at org.h2.command.Parser.readSum(Parser.java:2022)
[error]     at org.h2.command.Parser.readConcat(Parser.java:1995)
[error]     at org.h2.command.Parser.readCondition(Parser.java:1860)
[error]     at org.h2.command.Parser.readAnd(Parser.java:1841)
[error]     at org.h2.command.Parser.readExpression(Parser.java:1833)
[error]     at org.h2.command.Parser.parseSelectSimpleSelectPart(Parser.java:1746)
[error]     at org.h2.command.Parser.parseSelectSimple(Parser.java:1778)
[error]     at org.h2.command.Parser.parseSelectSub(Parser.java:1673)
[error]     at org.h2.command.Parser.parseSelectUnion(Parser.java:1518)
[error]     at org.h2.command.Parser.parseSelect(Parser.java:1506)
[error]     at org.h2.command.Parser.parsePrepared(Parser.java:405)
[error]     at org.h2.command.Parser.parse(Parser.java:279)
[error]     at org.h2.command.Parser.parse(Parser.java:251)
[error]     at org.h2.command.Parser.prepareCommand(Parser.java:217)
[error]     at org.h2.engine.Session.prepareLocal(Session.java:415)
[error]     at org.h2.engine.Session.prepareCommand(Session.java:364)
[error]     at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1119)
[error]     at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:71)
[error]     at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:267)
[error]     at com.jolbox.bonecp.ConnectionHandle.prepareStatement(ConnectionHandle.java:820)
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.getMoreIds(SequenceIdGenerator.java:193)
[error]     ... 80 more

私のモデルは次のようになります。

@Entity
@Table(name = "industry")
public class Industry extends Model {
    @Id public Long id;
    public String name;
    public String shortname;

    // called in the view to trigger lazy-loading
    public String getName() {
        return name;
    }

    public static Finder<Long, Industry> find = new Finder<Long, Industry>(Long.class, Industry.class);
}

...そして最後に、私の最初の進化からの関連部分:

create table industry (
    id        bigint not null,
    name      varchar(255),
    shortname varchar(255),
    constraint pk_industry primary key (id)
}

create sequence industry_seq start with 1000;

すべてが私の PostgreSQL DB で正常に動作し、私の観点からは、コードはPlay2.0 Computer Database Sampleと何ら変わりはありません。

私はどんな助けにも満足しています - ありがとう!

よろしく、アレックス

Answer 1

問題を解決しました。方法は次のとおりです。

• inMemoryDatabase() を呼び出す前に、独自の構成を提供しました
• データベースの名前は、inMemoryDatabase() の呼び出しで使用される「default」ではなく「test」でした
• 進化を conf/evolutions/test に保存せず、conf/evolutions/default にのみ保存した​​ため、スキーマは作成されていません
• inMemoryDatabase() への変更後に「デフォルト」構成が適用されなかったため、アプリをクリーンアップする必要がありました

Answer 2

私のIDはこのように見えますが、そのエラーは発生しません...

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
public Long id;

Answer 3

あなたのコードと新しい Play 2.0.1プロジェクトを使用しただけでは再現できませんでした。これがインポートを使用した私のコードと構成です。クラスは問題ではないので、私の推測では、進化をオフにしevolutionplugin=disabledて、データベースの進化が適用されないため、例外に「識別子が必要です」。

上記のように、データベースの進化を無効にして編集すると、発生したのと同じ例外が発生します。下部を参照してください。

Edit-2このブログ投稿の著者は、進化を手動で適用する方法を説明しています。あまりセクシーに見えませんが、プロジェクトごとにその基本クラスを 1 回だけ実装する必要があります。フレームワーク内でより洗練されたものを誰かが知っている場合は、教えてください。

Ebean Evolution (自動生成):

create table industry (   
  id              bigint not null,  
  name            varchar(255),   shortname                
  varchar(255),   constraint pk_industry primary key (id)) ;
  create sequence industry_seq;
;

私のモデル.業界

package models;

import play.db.ebean.Model;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "industry")
public class Industry extends Model {
    @Id
    public Long id;
    public String name;
    public String shortname;

    // called in the view to trigger lazy-loading
    public String getName() {
        return name;
    }

    public static Finder<Long, Industry> find 
           = new Model.Finder<Long, Industry>(Long.class, Industry.class);
}

私の単体テスト

package models;

import org.junit.Test;

import java.util.List;
import java.util.Map;

import static org.fest.assertions.Assertions.assertThat;
import static play.test.Helpers.fakeApplication;
import static play.test.Helpers.inMemoryDatabase;
import static play.test.Helpers.running;

public class ModelTest {

    @Test
    public void checkThatIndustriesExist() {
        running(fakeApplication(inMemoryDatabase()), new Runnable() {
            public void run() {
                Industry industry = new Industry();
                industry.name = "Some name";
                industry.shortname = "some-name";
                industry.save();
                assertThat(Industry.find.all()).hasSize(1);
            }
        });
    }

}

私のappication.conf

application.secret="8aXG0?h`kxccxs6JM?WdB@<v`kwouvQr2<y5Y>9jk3XU1yHV`Yr>18xRKHv8PTdv"
application.langs="en"
ebean.default="models.*"
logger.root=ERROR
logger.play=INFO
logger.application=DEBUG

テスト出力:

[stackoverflow-10869508] $ test
[info] Updating {file:/Users/martin/workspace/stackoverflow-10869508/}stackoverflow-10869508...
[info] Done updating.                                                                  
[info] Compiling 4 Scala sources and 3 Java sources to /Users/martin/workspace/stackoverflow-10869508/target/scala-2.9.1/classes...
[info] Compiling 1 Java source to /Users/martin/workspace/stackoverflow-10869508/target/scala-2.9.1/test-classes...
[info] models.ModelTest
[info] + models.ModelTest.checkThatIndustriesExist
[info] 
[info] 
[info] Total for test models.ModelTest
[info] Finished in 2.289 seconds
[info] 1 tests, 0 failures, 0 errors
[info] Passed: : Total 1, Failed 0, Errors 0, Passed 1, Skipped 0

進化を無効にする出力をテストします。

[stackoverflow-10869508] $ test
[info] Compiling 1 Java source to /Users/martin/workspace/stackoverflow-10869508/target/scala-2.9.1/test-classes...
[info] models.ModelTest
[error] Test models.ModelTest.checkThatIndustriesExist failed: Error getting sequence nextval
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.getMoreIds(SequenceIdGenerator.java:213)
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.loadMoreIds(SequenceIdGenerator.java:163)
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.nextId(SequenceIdGenerator.java:118)
[error]     at com.avaje.ebeaninternal.server.deploy.BeanDescriptor.nextId(BeanDescriptor.java:1218)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.setIdGenValue(DefaultPersister.java:1304)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.insert(DefaultPersister.java:403)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.saveEnhanced(DefaultPersister.java:345)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.saveRecurse(DefaultPersister.java:315)
[error]     at com.avaje.ebeaninternal.server.persist.DefaultPersister.save(DefaultPersister.java:282)
[error]     at com.avaje.ebeaninternal.server.core.DefaultServer.save(DefaultServer.java:1577)
[error]     at com.avaje.ebeaninternal.server.core.DefaultServer.save(DefaultServer.java:1567)
[error]     at com.avaje.ebean.Ebean.save(Ebean.java:538)
[error]     at play.db.ebean.Model.save(Model.java:76)
[error]     at models.ModelTest$1.run(ModelTest.java:22)
[error]     at play.test.Helpers.running(Helpers.java:277)
[error]     at models.ModelTest.checkThatIndustriesExist(ModelTest.java:17)
[error]     ...
[error] Caused by: org.h2.jdbc.JdbcSQLException: Syntax Fehler in SQL Befehl "SELECT INDUSTRY_SEQ.NEXTVAL UNION[*] SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL "; erwartet "identifier"
[error] Syntax error in SQL statement "SELECT INDUSTRY_SEQ.NEXTVAL UNION[*] SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL UNION SELECT INDUSTRY_SEQ.NEXTVAL "; expected "identifier"; SQL statement:
[error] select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval union select industry_seq.nextval [42001-158]
[error]     at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
[error]     at org.h2.message.DbException.get(DbException.java:169)
[error]     at org.h2.message.DbException.getSyntaxError(DbException.java:194)
[error]     at org.h2.command.Parser.readColumnIdentifier(Parser.java:2777)
[error]     at org.h2.command.Parser.readTermObjectDot(Parser.java:2336)
[error]     at org.h2.command.Parser.readTerm(Parser.java:2453)
[error]     at org.h2.command.Parser.readFactor(Parser.java:2035)
[error]     at org.h2.command.Parser.readSum(Parser.java:2022)
[error]     at org.h2.command.Parser.readConcat(Parser.java:1995)
[error]     at org.h2.command.Parser.readCondition(Parser.java:1860)
[error]     at org.h2.command.Parser.readAnd(Parser.java:1841)
[error]     at org.h2.command.Parser.readExpression(Parser.java:1833)
[error]     at org.h2.command.Parser.parseSelectSimpleSelectPart(Parser.java:1746)
[error]     at org.h2.command.Parser.parseSelectSimple(Parser.java:1778)
[error]     at org.h2.command.Parser.parseSelectSub(Parser.java:1673)
[error]     at org.h2.command.Parser.parseSelectUnion(Parser.java:1518)
[error]     at org.h2.command.Parser.parseSelect(Parser.java:1506)
[error]     at org.h2.command.Parser.parsePrepared(Parser.java:405)
[error]     at org.h2.command.Parser.parse(Parser.java:279)
[error]     at org.h2.command.Parser.parse(Parser.java:251)
[error]     at org.h2.command.Parser.prepareCommand(Parser.java:217)
[error]     at org.h2.engine.Session.prepareLocal(Session.java:415)
[error]     at org.h2.engine.Session.prepareCommand(Session.java:364)
[error]     at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1119)
[error]     at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:71)
[error]     at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:267)
[error]     at com.jolbox.bonecp.ConnectionHandle.prepareStatement(ConnectionHandle.java:820)
[error]     at com.avaje.ebean.config.dbplatform.SequenceIdGenerator.getMoreIds(SequenceIdGenerator.java:193)
[error]     ... 80 more
[info] x models.ModelTest.checkThatIndustriesExist
[info] 
[info] 
[info] Total for test models.ModelTest
[info] Finished in 2.028 seconds
[info] 1 tests, 1 failures, 0 errors
[error] Failed: : Total 1, Failed 1, Errors 0, Passed 0, Skipped 0
[error] Failed tests:
[error]     models.ModelTest
[error] {file:/Users/martin/workspace/stackoverflow-10869508/}stackoverflow-10869508/test:test: Tests unsuccessful
[error] Total time: 3 s, completed 03.06.2012 18:34:39