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

Methods

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

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 187
187:       def self.parse(str)
188:         new(Parser.new(str).parse)
189:       end

Public Instance methods

Override to force the key argument to a string.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 213
213:       def fetch(key, *args, &block)
214:         super(key.to_s, *args, &block)
215:       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 219
219:       def merge(hash, &block)
220:         self.class.new(super(convert_hash(hash), &block))
221:       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 261
261:         def op
262:           HStoreOp.new(self)
263:         end

Append a literalize version of the hstore to the sql.

[Source]

     # File lib/sequel/extensions/pg_hstore.rb, line 227
227:       def sql_literal_append(ds, sql)
228:         ds.literal_append(sql, unquoted_literal)
229:         sql << HSTORE_CAST
230:       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 235
235:       def unquoted_literal
236:         str = ''
237:         comma = false
238:         commas = COMMA
239:         quote = QUOTE
240:         kv_sep = KV_SEP
241:         null = NULL
242:         each do |k, v|
243:           str << commas if comma
244:           str << quote << escape_value(k) << quote
245:           str << kv_sep
246:           if v.nil?
247:             str << null
248:           else
249:             str << quote << escape_value(v) << quote
250:           end
251:           comma = true
252:         end
253:         str
254:       end

[Validate]