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/*
* Copyright (c) 2015, 2020, Oracle and/or its affiliates.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program 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 General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj;
/**
* A server version.
*/
public class ServerVersion implements Comparable {
private String completeVersion;
private Integer major;
private Integer minor;
private Integer subminor;
public ServerVersion(String completeVersion, int major, int minor, int subminor) {
this.completeVersion = completeVersion;
this.major = major;
this.minor = minor;
this.subminor = subminor;
}
public ServerVersion(int major, int minor, int subminor) {
this(null, major, minor, subminor);
}
public int getMajor() {
return this.major;
}
public int getMinor() {
return this.minor;
}
public int getSubminor() {
return this.subminor;
}
/**
* A string representation of this version. If this version was parsed from, or provided with, a "complete" string which may contain more than just the
* version number, this string is returned verbatim. Otherwise, a string representation of the version numbers is given.
*
* @return string version representation
*/
@Override
public String toString() {
if (this.completeVersion != null) {
return this.completeVersion;
}
return String.format("%d.%d.%d", this.major, this.minor, this.subminor);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || !ServerVersion.class.isAssignableFrom(obj.getClass())) {
return false;
}
ServerVersion another = (ServerVersion) obj;
if (this.getMajor() != another.getMajor() || this.getMinor() != another.getMinor() || this.getSubminor() != another.getSubminor()) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 23;
hash += 19 * hash + this.major;
hash += 19 * hash + this.minor;
hash += 19 * hash + this.subminor;
return hash;
}
public int compareTo(ServerVersion other) {
int c;
if ((c = this.major.compareTo(other.getMajor())) != 0) {
return c;
} else if ((c = this.minor.compareTo(other.getMinor())) != 0) {
return c;
}
return this.subminor.compareTo(other.getSubminor());
}
/**
* Does this version meet the minimum specified by `min'?
*
* @param min
* The minimum version to compare against.
* @return true if version meets the minimum specified by `min'
*/
public boolean meetsMinimum(ServerVersion min) {
return compareTo(min) >= 0;
}
/**
* Parse the server version into major/minor/subminor.
*
* @param versionString
* string version representation
* @return {@link ServerVersion}
*/
public static ServerVersion parseVersion(final String versionString) {
int point = versionString.indexOf('.');
if (point != -1) {
try {
int serverMajorVersion = Integer.parseInt(versionString.substring(0, point));
String remaining = versionString.substring(point + 1, versionString.length());
point = remaining.indexOf('.');
if (point != -1) {
int serverMinorVersion = Integer.parseInt(remaining.substring(0, point));
remaining = remaining.substring(point + 1, remaining.length());
int pos = 0;
while (pos < remaining.length()) {
if ((remaining.charAt(pos) < '0') || (remaining.charAt(pos) > '9')) {
break;
}
pos++;
}
int serverSubminorVersion = Integer.parseInt(remaining.substring(0, pos));
return new ServerVersion(versionString, serverMajorVersion, serverMinorVersion, serverSubminorVersion);
}
} catch (NumberFormatException NFE1) {
}
}
// can't parse the server version
return new ServerVersion(0, 0, 0);
}
}
