/*
* 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.dml;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import org.lealone.command.CommandInterface;
import org.lealone.command.Prepared;
import org.lealone.constant.Constants;
import org.lealone.engine.Session;
import org.lealone.message.DbException;
import org.lealone.result.ResultInterface;
import org.lealone.util.ScriptReader;
/**
* This class represents the statement
* RUNSCRIPT
*/
public class RunScriptCommand extends ScriptBase {
/**
* The byte order mark.
* 0xfeff because this is the Unicode char
* represented by the UTF-8 byte order mark (EF BB BF).
*/
private static final char UTF8_BOM = '\uFEFF';
private Charset charset = Constants.UTF8;
public RunScriptCommand(Session session) {
super(session);
}
public int update() {
session.getUser().checkAdmin();
int count = 0;
try {
openInput();
BufferedReader reader = new BufferedReader(new InputStreamReader(in, charset));
// if necessary, strip the BOM from the front of the file
reader.mark(1);
if (reader.read() != UTF8_BOM) {
reader.reset();
}
ScriptReader r = new ScriptReader(reader);
while (true) {
String sql = r.readStatement();
if (sql == null) {
break;
}
execute(sql);
count++;
if ((count & 127) == 0) {
checkCanceled();
}
}
reader.close();
} catch (IOException e) {
throw DbException.convertIOException(e, null);
} finally {
closeIO();
}
return count;
}
private void execute(String sql) {
try {
Prepared command = session.prepare(sql);
if (command.isQuery()) {
command.query(0);
} else {
command.update();
}
if (session.getAutoCommit()) {
session.commit(false);
}
} catch (DbException e) {
throw e.addSQL(sql);
}
}
public void setCharset(Charset charset) {
this.charset = charset;
}
public ResultInterface queryMeta() {
return null;
}
public int getType() {
return CommandInterface.RUNSCRIPT;
}
}