class SchemaEvolutionManager::Version

Constants

VERSION_FILE

Attributes

major[R]
micro[R]
minor[R]

Public Class Methods

is_valid?(version_string) click to toggle source
# File lib/schema-evolution-manager/version.rb, line 75
def Version.is_valid?(version_string)
  Preconditions.check_not_blank(version_string, "version_string cannot be blank")
  version_string.match(/^\w*\d+\.\d+\.\d+$/) ? true : false
end
new(major, minor, micro, opts={}) click to toggle source
# File lib/schema-evolution-manager/version.rb, line 9
def initialize(major, minor, micro, opts={})
  @major = major.to_i
  @minor = minor.to_i
  @micro = micro.to_i
  @prefix = opts.delete(:prefix) || nil
  if !opts.empty?
    raise "Invalid keys: " + opts.keys
  end
end
parse(version_string) click to toggle source
# File lib/schema-evolution-manager/version.rb, line 19
def Version.parse(version_string)
  Preconditions.check_not_blank(version_string, "version_string cannot be blank")
  Library.assert_valid_tag(version_string)
  if md = version_string.match(/^(\w*)(\d+)\.(\d+)\.(\d+)$/)
    Version.new(md[2], md[3], md[4], :prefix => md[1])
  else
    raise "ERROR: Bug in version string parser for version[%s]" % version_string
  end
end
read() click to toggle source

Reads the current version (from the VERSION FILE), returning an instance of the Version class

# File lib/schema-evolution-manager/version.rb, line 62
def Version.read
  Preconditions.check_state(File.exist?(VERSION_FILE), "Version file at path[%s] not found" % VERSION_FILE)
  version = IO.read(VERSION_FILE).strip
  Version.parse(version)
end
write(version) click to toggle source
# File lib/schema-evolution-manager/version.rb, line 68
def Version.write(version)
  Preconditions.assert_class(version, Version)
  File.open(VERSION_FILE, "w") do |out|
    out << "%s\n" % version.to_version_string
  end
end

Public Instance Methods

<=>(other) click to toggle source
# File lib/schema-evolution-manager/version.rb, line 48
def <=>(other)
  Preconditions.assert_class(other, Version)
  value = major <=> other.major
  if value == 0
    value = minor <=> other.minor
    if value == 0
      value = micro <=> other.micro
    end
  end
  value
end
next_major() click to toggle source

Returns the next major version

# File lib/schema-evolution-manager/version.rb, line 34
def next_major
  Version.new(major+1, 0, 0, :prefix => @prefix)
end
next_micro() click to toggle source

Returns the next micro version

# File lib/schema-evolution-manager/version.rb, line 44
def next_micro
  Version.new(major, minor, micro+1, :prefix => @prefix)
end
next_minor() click to toggle source

Returns the next minor version

# File lib/schema-evolution-manager/version.rb, line 39
def next_minor
  Version.new(major, minor+1, 0, :prefix => @prefix)
end
to_version_string() click to toggle source
# File lib/schema-evolution-manager/version.rb, line 29
def to_version_string
  "%s%s.%s.%s" % [@prefix, major, minor, micro]
end