org.netbeans.modeler.specification.version.SoftwareVersion Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jeddict

Jeddict is an open source Jakarta EE application development platform that accelerates developers productivity and simplifies development tasks of creating complex entity relationship models.

There is a newer version: 6.5.0

Show newest version

/**
 * Copyright [2016] Gaurav Gupta
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.netbeans.modeler.specification.version;

/**
 *
 * @author Gaurav Gupta
 */
public class SoftwareVersion implements Comparable
{
    private int[] parts;
    private final String value;

    public static SoftwareVersion getInstance(String value){
       return new SoftwareVersion(value);
    }
    public SoftwareVersion(String value)
    {
        if (value == null) {
            throw new IllegalArgumentException("Version can not be null");
        }
        if (value.indexOf('-') != -1) {
            value = value.substring(0, value.indexOf('-'));
        }

        if (value.matches("^[0-9]+(\\.[0-9]+)*$") == false)
            throw new IllegalArgumentException("Invalid version format");

        this.value = value;

        String[] split = value.split("\\.");
        parts = new int[split.length];

        for (int i = 0; i < split.length; i += 1)
            parts[i] = Integer.parseInt(split[i]);
    }

    @Override
    public String toString()
    {
        String[] split = new String[parts.length];

        for (int i = 0; i < parts.length; i += 1)
            split[i] = String.valueOf(parts[i]);

        return String.join(".", split);
    }

    public static int compare(SoftwareVersion verA, SoftwareVersion verB)
    {
        if (verA == verB) return 0;
        if (verA == null) return -1;
        if (verB == null) return 1;

        int max = Math.max(verA.parts.length, verB.parts.length);

        for (int i = 0; i < max; i += 1)
        {
            int partA = i < verA.parts.length ? verA.parts[i] : 0;
            int partB = i < verB.parts.length ? verB.parts[i] : 0;
            if (partA < partB) return -1;
            if (partA > partB) return 1;
        }

        return 0;
    }

    
    public int compareTo(String that)
    {
        return compare(this, new SoftwareVersion(that));
    }
    
    @Override
    public int compareTo(SoftwareVersion that)
    {
        return compare(this, that);
    }

    public static boolean equals(SoftwareVersion verA, SoftwareVersion verB)
    {
        if (verA == verB) return true;
        if (verA == null) return false;
        if (verB == null) return false;
        return compare(verA, verB) == 0;
    }

    @Override
    public boolean equals(Object that)
    {
        return that instanceof SoftwareVersion && equals(this, (SoftwareVersion)that);
    }
    
//    public static class Migration {
//        public static boolean isValid(String previousVersion, String currentVersion){
//            
//        }
//    }

    /**
     * @return the value
     */
    public String getValue() {
        return value;
    }
}