Application: gvSIG desktop

    private String type;

    private String code;

    private String op;

    private Version version;

    public DefaultDependency() {

        super();

        clear();

    }

    public DefaultDependency(PackageInfo packageInfo) {

        this();

        this.code = packageInfo.getCode();

        this.type = "required";

        this.op = ">=";

        this.version = packageInfo.getVersion();

    }

    public void clear() {

        this.type = "required";

        this.code = "unknow";

        this.op = "=";

        this.version = new DefaultVersion();

    }

    public Dependency parse(String dependency) {

        // Parse a string with the dependency specification

        // (required|suggested|recommended|conflict)[:] code (=|>|<|>=|<=)

        // version

        if (dependency == null) {

            this.clear();

            return this;

        }

        dependency = dependency.trim();

        if (dependency.equals("")) {

            this.clear();

            return this;

        }

        String s = dependency.replace(':', ' ');

        s = s.replaceAll("  ", " ");

        String[] x = s.split(" ");

        if (x.length != 4) {

            throw new InvalidDependencyFormatException(dependency);

        }

        this.type = x[0];

        this.code = x[1];

        this.op = x[2];

        this.version.parse(x[3]);

        return this;

    }

    private class InvalidDependencyFormatException extends BaseRuntimeException {

        private static final long serialVersionUID = 2856837862117653856L;

        private static final String message =

            "Error parsing dependecy '%(dependency)s'";

        private static final String KEY =

            "_Error_parsing_dependecy_XdependecyX";

        public InvalidDependencyFormatException(String dependency) {

            super(message, null, KEY, serialVersionUID);

            setValue("dependency", dependency);

        }

    }

    public String getType() {

        return this.type;

    }

    public String getCode() {

        return this.code;

    }

    public String getOp() {

        return this.op;

    }

    public Version getVersion() {

        return this.version;

    }

    public boolean match(String type, String code, Version version) {

        if (!this.type.equalsIgnoreCase(type)) {

            return false;

        }

        if (!this.code.equalsIgnoreCase(code)) {

            return false;

        }

        return version.check(this.op, this.version);

    }

    public String toString() {

        return MessageFormat.format("{0}: {1} {2} {3}", this.type, this.code,

            this.op, this.version.toString());

    }

    public Object clone() throws CloneNotSupportedException {

        DefaultDependency x = (DefaultDependency) super.clone();

        x.version = (Version) this.version.clone();

        return x;

    }

    public boolean equals(Object obj) {

        Dependency other;

        try {

            other = (Dependency) obj;

        } catch (Exception ex) {

            return false;

        }

        if (!this.code.equalsIgnoreCase(other.getCode())) {

            return false;

        }

        if (!this.type.equalsIgnoreCase(other.getType())) {

            return false;

        }

        if (!this.op.equalsIgnoreCase(other.getOp())) {

            return false;

        }

        if (!this.version.equals(other.getVersion())) {

            return false;

        }

        return true;

    }