Question

我正在向我的表中添加新列，如下面的代码：

    String sql = "ALTER TABLE PROJE_ALAN ADD NEWCOLUMN VARCHAR(30)";
    PreparedStatement ps = conn.prepareStatement(sql.toString());
    ps.execute();
    conn.close();
    ps.close();

这是在我的表中添加一个新列，但是当我想添加新数据时会抛出异常：

    Caused by: org.h2.jdbc.JdbcSQLException: General error: "net.sourceforge.hatbox.RTreeInternalException: Unable to select meta node"; SQL statement: INSERT INTO "PROJE_ALAN" ( "THE_GEOM","JJ","KK","NEWCOLUMN" ) VALUES ( ST_GeomFromText ('MULTIPOLYGON (((-244856.06897661195 4166022.019422841, 189248.78294214187 4442270.561552957, 778743.439809086 4301679.785647452, 662817.7123080553 4101892.893571207, 83189.0748029009 3707252.1190996123, -244856.06897661195 4166022.019422841)))',23036),'','','') [50000-172]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
at org.h2.message.DbException.get(DbException.java:158)
at org.h2.message.DbException.convert(DbException.java:281)
at org.h2.schema.TriggerObject.fireRow(TriggerObject.java:215)
at org.h2.table.Table.fireRow(Table.java:904)
at org.h2.table.Table.fireAfterRow(Table.java:895)
at org.h2.command.dml.Insert.insertRows(Insert.java:128)
at org.h2.command.dml.Insert.update(Insert.java:86)
at org.h2.command.CommandContainer.update(CommandContainer.java:79)
at org.h2.command.Command.executeUpdate(Command.java:235)
at org.h2.jdbc.JdbcStatement.executeInternal(JdbcStatement.java:180)
at org.h2.jdbc.JdbcStatement.execute(JdbcStatement.java:155)
at org.apache.commons.dbcp.DelegatingStatement.execute(DelegatingStatement.java:264)
at org.apache.commons.dbcp.DelegatingStatement.execute(DelegatingStatement.java:264)
at org.geotools.jdbc.JDBCDataStore.insert(JDBCDataStore.java:1447)
... 17 more

    Caused by: net.sourceforge.hatbox.RTreeInternalException: Unable to select meta node
at net.sourceforge.hatbox.Lock.<init>(Lock.java:88)
at net.sourceforge.hatbox.RTreeSessionDb.<init>(RTreeSessionDb.java:75)
at net.sourceforge.hatbox.jts.InsertTrigger.fire(InsertTrigger.java:43)
at org.h2.schema.TriggerObject.fireRow(TriggerObject.java:201)
... 28 more

    Caused by: org.h2.jdbc.JdbcSQLException: Table "PROJE_ALAN_COPY_11_5_HATBOX" not found; SQL statement: select node_data, id from "PUBLIC"."PROJE_ALAN_COPY_11_5_HATBOX" where id = ? FOR UPDATE [42102-172]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
at org.h2.message.DbException.get(DbException.java:169)
at org.h2.message.DbException.get(DbException.java:146)
at org.h2.schema.Schema.getTableOrView(Schema.java:419)
at org.h2.command.Parser.readTableOrView(Parser.java:4808)
at org.h2.command.Parser.readTableFilter(Parser.java:1099)
at org.h2.command.Parser.parseSelectSimpleFromPart(Parser.java:1705)
at org.h2.command.Parser.parseSelectSimple(Parser.java:1813)
at org.h2.command.Parser.parseSelectSub(Parser.java:1699)
at org.h2.command.Parser.parseSelectUnion(Parser.java:1542)
at org.h2.command.Parser.parseSelect(Parser.java:1530)
at org.h2.command.Parser.parsePrepared(Parser.java:405)
at org.h2.command.Parser.parse(Parser.java:279)
at org.h2.command.Parser.parse(Parser.java:251)
at org.h2.command.Parser.prepareCommand(Parser.java:218)
at org.h2.engine.Session.prepareLocal(Session.java:425)
at org.h2.engine.Session.prepareCommand(Session.java:374)
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1138)
at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:70)
at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:644)
at net.sourceforge.hatbox.Lock.<init>(Lock.java:72)
... 31 more

如果我重新启动应用程序，那么我可以将新数据添加到新表中。我认为问题可以刷新索引而无需重新启动应用程序。也许这与Hat Box有关。

那么我错过了什么？

Answer 1

这不是Hatbox的错。这是H2中的一个错误。 H2引擎在ALTER TABLE语句之后重新创建触发器，但是使用TEMP TABLE NAME调用trigger.init。因此，使用错误的表名初始化触发器。创建触发器后，H2将表重命名为原始值。

我对这个bug的解决方法是（它也有问题，但是工作）：

更改了net.sourceforge.hatbox.jts.Insert，更新，删除触发器初始化方法

public void init(Connection con, String schema, String trigger, String table,
        boolean before, int type) throws SQLException {

    this.schema = schema;
    this.table = table;

    if(this.table.contains("_COPY_")) {
        this.table = table.substring(0, table.indexOf("_COPY_"));
    }
}

你必须在使用它时，如果你的表名上有 COPY ，它将无效。您可以将_COPY_更改为*_COPY_?_?，例如正则表达式匹配。

H2数据库在使用ALTER TABLE添加新列后插入数据异常

1 个答案: