/*
* Copyright 2004-2013 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.lealone.command.ddl;
import org.lealone.command.CommandInterface;
import org.lealone.constant.ErrorCode;
import org.lealone.dbobject.Right;
import org.lealone.dbobject.Schema;
import org.lealone.dbobject.table.Table;
import org.lealone.engine.Database;
import org.lealone.engine.Session;
import org.lealone.message.DbException;
/**
* This class represents the statement
* ALTER TABLE RENAME
*/
public class AlterTableRename extends SchemaCommand {
private Table oldTable;
private String newTableName;
private boolean hidden;
public AlterTableRename(Session session, Schema schema) {
super(session, schema);
}
public void setOldTable(Table table) {
oldTable = table;
}
public void setNewTableName(String name) {
newTableName = name;
}
public int update() {
session.commit(true);
Database db = session.getDatabase();
session.getUser().checkRight(oldTable, Right.ALL);
Table t = getSchema().findTableOrView(session, newTableName);
if (t != null && hidden && newTableName.equals(oldTable.getName())) {
if (!t.isHidden()) {
t.setHidden(hidden);
oldTable.setHidden(true);
db.update(session, oldTable);
}
return 0;
}
if (t != null || newTableName.equals(oldTable.getName())) {
throw DbException.get(ErrorCode.TABLE_OR_VIEW_ALREADY_EXISTS_1, newTableName);
}
if (oldTable.isTemporary()) {
throw DbException.getUnsupportedException("temp table");
}
db.renameSchemaObject(session, oldTable, newTableName);
return 0;
}
public int getType() {
return CommandInterface.ALTER_TABLE_RENAME;
}
public void setHidden(boolean hidden) {
this.hidden = hidden;
}
}