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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
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 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package com.sun.faces.application.resource;

/**
 * Metadata pertaining to versions.
 */
public class VersionInfo implements Comparable {

    private String version;
    private String extension;

    // ------------------------------------------------------------ Constructors


    /**
     * Constructs a new VersionInfo instance.
     * @param version the version
     * @param extension the extension (only pertains to versioned resources,
     *  not libraries, and thus may be null)
     */
    public VersionInfo(String version, String extension) {
        this.version = version;
        this.extension = extension;
    }

    
    // ---------------------------------------------------------- Public Methods


    /**
     * @return the version
     */
    public String getVersion() {

        return version;

    }

    /**
     * @return the extension of the resource at processing time, or null
     *  if this version is associated with a library
     */
    public String getExtension() {

        return extension;

    }


    @Override
    public String toString() {

        return version;

    }


    @Override
    public int hashCode() {

        return (version.hashCode() ^ ((extension != null)
                                      ? extension.hashCode()
                                      : 0));

    }

    @Override
    public boolean equals(Object obj) {

        if (obj == null || !(obj instanceof VersionInfo)) {
            return false;
        }
        if (this == obj) {
            return true;
        }
        VersionInfo passed = (VersionInfo) obj;
        boolean versionsEqual = this.version.equals(passed.version);
        boolean extensionEqual;
        if (this.extension == null) {
            extensionEqual = (passed.extension == null);
        } else {
            extensionEqual = this.extension.equals(passed.extension);
        }
        return (versionsEqual && extensionEqual);

    }


    // ------------------------------------------------- Methods from Comparable


    public int compareTo(Object o) {
        assert(o instanceof VersionInfo);
        VersionInfo c = (VersionInfo) o;
        return (this.version.compareTo(c.version));
    }
}