org.h2.command.ddl.AlterIndexRename Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.command.ddl;
import org.h2.api.ErrorCode;
import org.h2.command.CommandInterface;
import org.h2.engine.Database;
import org.h2.engine.Right;
import org.h2.engine.Session;
import org.h2.index.Index;
import org.h2.message.DbException;
import org.h2.schema.Schema;
/**
* This class represents the statement
* ALTER INDEX RENAME
*/
public class AlterIndexRename extends DefineCommand {
private boolean ifExists;
private Schema oldSchema;
private String oldIndexName;
private String newIndexName;
public AlterIndexRename(Session session) {
super(session);
}
public void setIfExists(boolean b) {
ifExists = b;
}
public void setOldSchema(Schema old) {
oldSchema = old;
}
public void setOldName(String name) {
oldIndexName = name;
}
public void setNewName(String name) {
newIndexName = name;
}
@Override
public int update() {
session.commit(true);
Database db = session.getDatabase();
Index oldIndex = oldSchema.findIndex(session, oldIndexName);
if (oldIndex == null) {
if (!ifExists) {
throw DbException.get(ErrorCode.INDEX_NOT_FOUND_1,
newIndexName);
}
return 0;
}
if (oldSchema.findIndex(session, newIndexName) != null ||
newIndexName.equals(oldIndexName)) {
throw DbException.get(ErrorCode.INDEX_ALREADY_EXISTS_1,
newIndexName);
}
session.getUser().checkRight(oldIndex.getTable(), Right.ALL);
db.renameSchemaObject(session, oldIndex, newIndexName);
return 0;
}
@Override
public int getType() {
return CommandInterface.ALTER_INDEX_RENAME;
}
}