UuidAwareBytesDataType.java
- /*
- *
- * The DbUnit Database Testing Framework
- * Copyright (C)2002-2008, DbUnit.org
- *
- * 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.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
- package org.dbunit.dataset.datatype;
- import java.util.UUID;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
- /**
- * <p>
- * A datatype that is capable of storing UUIDs into BINARY fields (big-endian).
- * </p>
- * <p>
- * For the UUID to be detected as such, the string value of the field has to be
- * in the form of {@code uuid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'}, where the
- * x's are the actual string value of the UUID, hex-encoded. Example:
- * </p>
- *
- * <pre>
- * <company id="uuid'791ae85a-d8d0-11e2-8c43-50e549c9b654'" name="ACME"/>
- * </pre>
- *
- * @author Timur Strekalov
- */
- public class UuidAwareBytesDataType extends BytesDataType
- {
- /**
- * The regular expression for a hexadecimal UUID representation.
- */
- private static final Pattern UUID_RE = Pattern.compile(
- "uuid'([0-9A-Fa-f]{8}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{12})'");
- UuidAwareBytesDataType(final String name, final int sqlType)
- {
- super(name, sqlType);
- }
- @Override
- public Object typeCast(final Object value) throws TypeCastException
- {
- return super.typeCast(uuidAwareValueOf(value));
- }
- private static Object uuidAwareValueOf(final Object value)
- {
- if (value instanceof String)
- {
- final String s = (String) value;
- final Matcher m = UUID_RE.matcher(s);
- if (m.find())
- {
- final UUID uuid = UUID.fromString(m.group(1));
- return uuidToBytes(uuid);
- }
- }
- return value;
- }
- private static byte[] uuidToBytes(final UUID uuid)
- {
- final long msb = uuid.getMostSignificantBits();
- final long lsb = uuid.getLeastSignificantBits();
- return new byte[] {extractByte(msb, 0), extractByte(msb, 1),
- extractByte(msb, 2), extractByte(msb, 3), extractByte(msb, 4),
- extractByte(msb, 5), extractByte(msb, 6), extractByte(msb, 7),
- extractByte(lsb, 0), extractByte(lsb, 1), extractByte(lsb, 2),
- extractByte(lsb, 3), extractByte(lsb, 4), extractByte(lsb, 5),
- extractByte(lsb, 6), extractByte(lsb, 7)};
- }
- private static byte extractByte(final long value, final int byteIndex)
- {
- return (byte) (value >> (56 - byteIndex * 8) & 0xff);
- }
- }