Class: Sequel::Postgres::HStore
- Defined in:
- lib/sequel/extensions/pg_hstore.rb,
lib/sequel/extensions/pg_hstore_ops.rb
Defined Under Namespace
Modules: DatabaseMethods Classes: Parser
Constant Summary collapse
- DEFAULT_PROC =
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.
lambda{|h, k| h[k.to_s] unless k.is_a?(String)}
- QUOTE =
'"'.freeze
- COMMA =
",".freeze
- KV_SEP =
"=>".freeze
- NULL =
"NULL".freeze
- ESCAPE_RE =
/("|\\)/.freeze
- ESCAPE_REPLACE =
'\\\\\1'.freeze
- HSTORE_CAST =
'::hstore'.freeze
Class Method Summary collapse
-
.parse(str) ⇒ Object
Parse the given string into an HStore, assuming the str is in PostgreSQL hstore output format.
Instance Method Summary collapse
-
#fetch(key, *args, &block) ⇒ Object
Override to force the key argument to a string.
-
#merge(hash, &block) ⇒ Object
Convert the input hash to string keys and values before merging, and return a new HStore instance with the merged hash.
-
#op ⇒ Object
Wrap the receiver in an HStoreOp so you can easily use the PostgreSQL hstore functions and operators with it.
-
#sql_literal_append(ds, sql) ⇒ Object
Append a literalize version of the hstore to the sql.
-
#unquoted_literal ⇒ Object
Return a string containing the unquoted, unstring-escaped literal version of the hstore.
Methods inherited from Hash
#&, #case, #hstore, #sql_expr, #sql_negate, #sql_or, #|, #~
Class Method Details
Instance Method Details
#fetch(key, *args, &block) ⇒ Object
Override to force the key argument to a string.
215 216 217 |
# File 'lib/sequel/extensions/pg_hstore.rb', line 215 def fetch(key, *args, &block) super(key.to_s, *args, &block) end |
#merge(hash, &block) ⇒ Object
Convert the input hash to string keys and values before merging, and return a new HStore instance with the merged hash.
221 222 223 |
# File 'lib/sequel/extensions/pg_hstore.rb', line 221 def merge(hash, &block) self.class.new(super(convert_hash(hash), &block)) end |
#op ⇒ Object
Wrap the receiver in an HStoreOp so you can easily use the PostgreSQL hstore functions and operators with it.
241 242 243 |
# File 'lib/sequel/extensions/pg_hstore_ops.rb', line 241 def op HStoreOp.new(self) end |
#sql_literal_append(ds, sql) ⇒ Object
Append a literalize version of the hstore to the sql.
229 230 231 232 |
# File 'lib/sequel/extensions/pg_hstore.rb', line 229 def sql_literal_append(ds, sql) ds.literal_append(sql, unquoted_literal) sql << HSTORE_CAST end |
#unquoted_literal ⇒ Object
Return a string containing the unquoted, unstring-escaped literal version of the hstore. Separated out for use by the bound argument code.
237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 |
# File 'lib/sequel/extensions/pg_hstore.rb', line 237 def unquoted_literal str = '' comma = false commas = COMMA quote = QUOTE kv_sep = KV_SEP null = NULL each do |k, v| str << commas if comma str << quote << escape_value(k) << quote str << kv_sep if v.nil? str << null else str << quote << escape_value(v) << quote end comma = true end str end |