org.h2.command.ddl.DropSchema Maven / Gradle / Ivy
/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://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.Session;
import org.h2.message.DbException;
import org.h2.schema.Schema;
/**
* This class represents the statement
* DROP SCHEMA
*/
public class DropSchema extends DefineCommand {
private String schemaName;
private boolean ifExists;
public DropSchema(Session session) {
super(session);
}
public void setSchemaName(String name) {
this.schemaName = name;
}
@Override
public int update() {
session.getUser().checkSchemaAdmin();
session.commit(true);
Database db = session.getDatabase();
Schema schema = db.findSchema(schemaName);
if (schema == null) {
if (!ifExists) {
throw DbException.get(ErrorCode.SCHEMA_NOT_FOUND_1, schemaName);
}
} else {
if (!schema.canDrop()) {
throw DbException.get(ErrorCode.SCHEMA_CAN_NOT_BE_DROPPED_1, schemaName);
}
db.removeDatabaseObject(session, schema);
}
return 0;
}
public void setIfExists(boolean ifExists) {
this.ifExists = ifExists;
}
@Override
public int getType() {
return CommandInterface.DROP_SCHEMA;
}
}