我正在使用带有 hibernate 的 postgresql,我想将模板表中的数据批量插入到另一个模板表中。如何在本机查询中做到这一点对我来说很清楚,但在 HQL 中我真的不知道如何达到我的预期结果。我使用来自http://docs.jboss.org/hibernate/core/3.3/reference/en/html/batch.html#batch-direct的语法来创建我的查询。
@NamedQuery(name="Tile.bulkLoadLevel", query="INSERT INTO Tile (x, y, game, tileOverlay, startTile, blockWalkable, sightBlocking)" +
" SELECT t.x, t.y, :game as game, t.tileOverlay, t.startTile, t.blockWalkable, t.sightBlocking from TemplateQuestTile t")
我的舍玛:
CREATE TABLE tile
(
x integer NOT NULL,
y integer NOT NULL,
blockwalkable boolean NOT NULL,
sightblocking boolean NOT NULL,
starttile boolean NOT NULL,
imagepath character varying(255) NOT NULL,
gameid bigint NOT NULL,
CONSTRAINT tile_pkey PRIMARY KEY (gameid, x, y)
);
简化我的模板:
CREATE TABLE templatequesttile
(
x integer NOT NULL,
y integer NOT NULL,
blockwalkable boolean NOT NULL,
sightblocking boolean NOT NULL,
starttile boolean NOT NULL,
imagepath character varying(255) NOT NULL,
questname character varying(255) NOT NULL,
CONSTRAINT templatequesttile_pkey PRIMARY KEY (questname, questseries, x, y)
)
我收到以下错误:
ERROR (SessionFactoryImpl.java:435) - Error in named query: Tile.bulkLoad
org.hibernate.QueryException: number of select types did not match those for insert [INSERT INTO Tile (x, y, game, tileOverlay, startTile, blockWalkable, sightBlocking) SELECT t.x, t.y, :game, t.tileOverlay, t.startTile, t.blockWalkable, t.sightBlocking from net.hq.model.TemplateQuestTile t]
at org.hibernate.hql.ast.tree.IntoClause.validateTypes(IntoClause.java:115)
at org.hibernate.hql.ast.tree.InsertStatement.validate(InsertStatement.java:57)
at org.hibernate.hql.ast.HqlSqlWalker.postProcessInsert(HqlSqlWalker.java:715)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.insertStatement(HqlSqlBaseWalker.java:519)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261)
游戏是具有由序列生成的长标识符的实体。
如您所见,游戏不在我的模板表中,因此我需要将游戏 ID 强制输入到我的查询中。有谁知道这必须怎么做?
提前感谢您的时间,最好的问候m
PS:我如何调用查询:
Query query = em.createNamedQuery("Tile.bulkLoadLevel");
query.setParameter("game", game.getGameid());
int copyiedEntities = query.executeUpdate();
实体:
public class Tile implements Serializable{
@Id
private int x;
@Id
private int y;
@Id
@ManyToOne
@JoinColumn(name="gameid")
private Game game;
PS:演员阵容也不行。
java.lang.ExceptionInInitializerError at net.hq.process.db.PersistenceTest.setUp(PersistenceTest.java:58) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 在 java.lang.reflect.Method.invoke(Method.java:597) 在 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java :44) 在 org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) 在 org.junit.internal 的 org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)。 org.junit.internal.runners.statements.RunAfters 上的 runners.statements.RunBefores.evaluate(RunBefores.java:27)。在 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49) 在 org.junit.runners.ParentRunner.run(ParentRunner.java:236) 在 org.junit.runners.ParentRunner.run(ParentRunner.java:236) 评估(RunAfters.java:31) .eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 在 org.eclipse.jdt .internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 在 org.eclipse.jdt.internal.junit .runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 引起:java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at org 的 java.lang.NullPointerException .hibernate.util.ReflectHelper。classForName(ReflectHelper.java:192) at org.hibernate.type.TypeFactory.heuristicType(TypeFactory.java:279) at org.hibernate.type.TypeFactory.heuristicType(TypeFactory.java:264) at org.hibernate.hql.ast .util.SessionFactoryHelper.findFunctionReturnType(SessionFactoryHelper.java:400) 在 org.hibernate.hql.ast.util.SessionFactoryHelper.findFunctionReturnType(SessionFactoryHelper.java:392) 在 org.hibernate.hql.ast.tree.MethodNode.dialectFunction(MethodNode .java:103) 在 org.hibernate.hql.ast.HqlSqlWalker.processFunction(HqlSqlWalker.java:979) 在 org.hibernate 的 org.hibernate.hql.ast.tree.MethodNode.resolve(MethodNode.java:78)。 hql.antlr.HqlSqlBaseWalker.functionCall(HqlSqlBaseWalker.java:2529) 在 org.hibernate.hql.antlr.HqlSqlBaseWalker.selectExpr(HqlSqlBaseWalker.java:2129) 在 org.hibernate.hql。antlr.HqlSqlBaseWalker.selectExprList(HqlSqlBaseWalker.java:1983) at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectClause(HqlSqlBaseWalker.java:1515) at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:586)在 org.hibernate.hql.antlr.HqlSqlBaseWalker.insertStatement(HqlSqlBaseWalker.java:510) 在 org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261) 在 org.hibernate.hql.ast.QueryTranslatorImpl.analyze (QueryTranslatorImpl.java:254) 在 org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185) 在 org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136) 在 org.hibernate。 engine.query.HQLQueryPlan.(HQLQueryPlan.java:101) 在 org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:80) 在 org.hibernate。engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:98) at org.hibernate.impl.SessionFactoryImpl.checkNamedQueries(SessionFactoryImpl.java:562) at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:424) at org. hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1385) 在 org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:954) 在 org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:891) 在 org .hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:57) 在 javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48) 在 javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32) 在 net.hq。 util.Db.(Db.java:7) ... 17 更多还有 17 个