Class Sequel::Postgres::HStore
In: lib/sequel/extensions/pg_hstore_ops.rb
lib/sequel/extensions/pg_hstore.rb
Parent: Object

Methods

_dump   _load   fetch   merge   op   parse   sql_literal_append   unquoted_literal  

Included Modules

Sequel::SQL::AliasMethods

Classes and Modules

Module Sequel::Postgres::HStore::DatabaseMethods
Class Sequel::Postgres::HStore::Parser

Constants

DEFAULT_PROC = lambda{|h, k| h[k.to_s] unless k.is_a?(String)}   Default proc used for all underlying HStore hashes, so that even if you grab the underlying hash, it will still convert non-string keys to strings during lookup.
QUOTE = '"'.freeze
COMMA = ",".freeze
KV_SEP = "=>".freeze
NULL = "NULL".freeze
ESCAPE_RE = /("|\\)/.freeze
ESCAPE_REPLACE = '\\\\\1'.freeze
HSTORE_CAST = '::hstore'.freeze

External Aliases

__getobj__ -> to_hash
  Return the underlying hash used by this HStore instance.

Public Class methods

Use custom marshal loading, since underlying hash uses a default proc.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 208
208:       def self._load(args)
209:         new(Hash[Marshal.load(args)])
210:       end

Parse the given string into an HStore, assuming the str is in PostgreSQL hstore output format.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 214
214:       def self.parse(str)
215:         new(Parser.new(str).parse)
216:       end

Public Instance methods

Use custom marshal dumping, since underlying hash uses a default proc.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 240
240:       def _dump(*)
241:         Marshal.dump(to_a)
242:       end

Override to force the key argument to a string.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 245
245:       def fetch(key, *args, &block)
246:         super(key.to_s, *args, &block)
247:       end

Convert the input hash to string keys and values before merging, and return a new HStore instance with the merged hash.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 251
251:       def merge(hash, &block)
252:         self.class.new(super(convert_hash(hash), &block))
253:       end

Wrap the receiver in an HStoreOp so you can easily use the PostgreSQL hstore functions and operators with it.

[Source]

     # File lib/sequel/extensions/pg_hstore_ops.rb, line 319
319:         def op
320:           HStoreOp.new(self)
321:         end

Append a literalize version of the hstore to the sql.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 259
259:       def sql_literal_append(ds, sql)
260:         ds.literal_append(sql, unquoted_literal)
261:         sql << HSTORE_CAST
262:       end

Return a string containing the unquoted, unstring-escaped literal version of the hstore. Separated out for use by the bound argument code.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 267
267:       def unquoted_literal
268:         str = String.new
269:         comma = false
270:         commas = COMMA
271:         quote = QUOTE
272:         kv_sep = KV_SEP
273:         null = NULL
274:         each do |k, v|
275:           str << commas if comma
276:           str << quote << escape_value(k) << quote
277:           str << kv_sep
278:           if v.nil?
279:             str << null
280:           else
281:             str << quote << escape_value(v) << quote
282:           end
283:           comma = true
284:         end
285:         str
286:       end

[Validate]