Class: HSQL::File

Inherits:
Object
  • Object
show all
Defined in:
lib/hsql/file.rb

Overview

HSQL::File parses the input file and provides reader methods to the hash of YAML data from the front matter section and a list of the queries in the SQL portion.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(string, options) ⇒ File

Returns a new instance of File.



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# File 'lib/hsql/file.rb', line 13

def initialize(string, options)
  @string = string
  @timestamp = options.fetch(:timestamp, Time.current)
  @environment = options[:environment]
  @verbose = options[:verbose]
end

Instance Attribute Details

#environment ⇒ Object (readonly)

Returns the value of attribute environment.



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# File 'lib/hsql/file.rb', line 11

def environment
  @environment
end

#rendered_sql ⇒ Object (readonly)

Returns the value of attribute rendered_sql.



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# File 'lib/hsql/file.rb', line 11

def rendered_sql
  @rendered_sql
end

#string ⇒ Object (readonly)

Returns the value of attribute string.



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# File 'lib/hsql/file.rb', line 11

def string
  @string
end

#timestamp ⇒ Object (readonly)

Returns the value of attribute timestamp.



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# File 'lib/hsql/file.rb', line 11

def timestamp
  @timestamp
end

Class Method Details

.parse(source, options) ⇒ Object 



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# File 'lib/hsql/file.rb', line 27

def self.parse(source, options)
  new(source, options).parse!
end

.parse_file(filename, options) ⇒ Object

Given a SQL file with YAML front matter (see README for an example) this will return a HSQL::File object providing access to the parts of that file.



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# File 'lib/hsql/file.rb', line 23

def self.parse_file(filename, options)
  parse(::File.read(filename), options)
end

Instance Method Details

#metadata ⇒ Object 



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# File 'lib/hsql/file.rb', line 35

def metadata
  @metadata ||= begin
    hash = @front_matter ? ::YAML.load(@front_matter) : {}
    environments = hash.delete('environments') || {}
    hash.merge(environments[environment] || {})
  end
end

#parse! ⇒ Object 



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# File 'lib/hsql/file.rb', line 47

def parse!
  split!
  interpolate_metadata!
  self
end

#queries ⇒ Object 



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# File 'lib/hsql/file.rb', line 43

def queries
  @queries ||= Query.parse(@rendered_sql)
end