com.liferay.portal.dao.db.SAPDB Maven / Gradle / Ivy

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Contains implementation for the portal services.
There is a newer version: 7.0.0-nightly
/**
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.dao.db;

import com.liferay.portal.kernel.dao.db.DB;
import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringUtil;

import java.io.IOException;

/**
 * @author Alexander Chow
 * @author Sandeep Soni
 * @author Ganesh Ram
 */
public class SAPDB extends BaseDB {

	public static DB getInstance() {
		return _instance;
	}

	@Override
	public String buildSQL(String template) throws IOException {
		template = convertTimestamp(template);
		template = replaceTemplate(template, getTemplate());

		template = reword(template);

		return template;
	}

	protected SAPDB() {
		super(TYPE_SAP);
	}

	@Override
	protected String buildCreateFileContent(
		String sqlDir, String databaseName, int population) {

		return null;
	}

	@Override
	protected String getServerName() {
		return "sap";
	}

	@Override
	protected String[] getTemplate() {
		return _SAP;
	}

	@Override
	protected String reword(String data) throws IOException {
		UnsyncBufferedReader unsyncBufferedReader = new UnsyncBufferedReader(
			new UnsyncStringReader(data));

		StringBundler sb = new StringBundler();

		String line = null;

		while ((line = unsyncBufferedReader.readLine()) != null) {
			if (line.startsWith(ALTER_COLUMN_NAME)) {
				String[] template = buildColumnNameTokens(line);

				line = StringUtil.replace(
					"rename column @table@.@old-column@ to @new-column@;",
					REWORD_TEMPLATE, template);
			}
			else if (line.startsWith(ALTER_COLUMN_TYPE)) {
				String[] template = buildColumnTypeTokens(line);

				line = StringUtil.replace(
					"alter table @table@ modify @old-column@ @type@;",
					REWORD_TEMPLATE, template);
			}
			else if (line.startsWith(ALTER_TABLE_NAME)) {
				String[] template = buildTableNameTokens(line);

				line = StringUtil.replace(
					"alter table @old-table@ to @new-table@;",
					RENAME_TABLE_TEMPLATE, template);
			}

			sb.append(line);
			sb.append("\n");
		}

		unsyncBufferedReader.close();

		return sb.toString();
	}

	private static final String[] _SAP = {
		"##", "TRUE", "FALSE", "'1970-01-01 00:00:00.000000'", "timestamp",
		" blob", " blob", " boolean", " timestamp", " float", " int", " bigint",
		" varchar", " varchar", " varchar", "", "commit"
	};

	private static SAPDB _instance = new SAPDB();

}