class Sequel::Postgres::JSONBOp

JSONBaseOp subclass for the jsonb type.

In the method documentation examples, assume that:

jsonb_op = Sequel.pg_jsonb(:jsonb)

Constants

CONCAT
CONTAINED_BY
CONTAINS
CONTAIN_ALL
CONTAIN_ANY
DELETE_PATH
HAS_KEY
PATH_EXISTS
PATH_MATCH

Public Instance Methods

-(other) click to toggle source

jsonb expression for deletion of the given argument from the current jsonb.

jsonb_op - "a" # (jsonb - 'a')
Calls superclass method
# File lib/sequel/extensions/pg_json_ops.rb, line 319
def -(other)
  self.class.new(super)
end
concat(other) click to toggle source

jsonb expression for concatenation of the given jsonb into the current jsonb.

jsonb_op.concat(:h) # (jsonb || h)
# File lib/sequel/extensions/pg_json_ops.rb, line 327
def concat(other)
  json_op(CONCAT, wrap_input_jsonb(other))
end
contain_all(other) click to toggle source

Check if the receiver contains all of the keys in the given array:

jsonb_op.contain_all(:a) # (jsonb ?& a)
# File lib/sequel/extensions/pg_json_ops.rb, line 334
def contain_all(other)
  bool_op(CONTAIN_ALL, wrap_input_array(other))
end
contain_any(other) click to toggle source

Check if the receiver contains any of the keys in the given array:

jsonb_op.contain_any(:a) # (jsonb ?| a)
# File lib/sequel/extensions/pg_json_ops.rb, line 341
def contain_any(other)
  bool_op(CONTAIN_ANY, wrap_input_array(other))
end
contained_by(other) click to toggle source

Check if the other jsonb contains all entries in the receiver:

jsonb_op.contained_by(:h) # (jsonb <@ h)
# File lib/sequel/extensions/pg_json_ops.rb, line 355
def contained_by(other)
  bool_op(CONTAINED_BY, wrap_input_jsonb(other))
end
contains(other) click to toggle source

Check if the receiver contains all entries in the other jsonb:

jsonb_op.contains(:h) # (jsonb @> h)
# File lib/sequel/extensions/pg_json_ops.rb, line 348
def contains(other)
  bool_op(CONTAINS, wrap_input_jsonb(other))
end
delete_path(other) click to toggle source

Removes the given path from the receiver.

jsonb_op.delete_path(:h) # (jsonb #- h)
# File lib/sequel/extensions/pg_json_ops.rb, line 362
def delete_path(other)
  json_op(DELETE_PATH, wrap_input_array(other))
end
has_key?(key) click to toggle source

Check if the receiver contains the given key:

jsonb_op.has_key?('a') # (jsonb ? 'a')
# File lib/sequel/extensions/pg_json_ops.rb, line 369
def has_key?(key)
  bool_op(HAS_KEY, key)
end
Also aliased as: include?
include?(key)
Alias for: has_key?
insert(path, other, insert_after=false) click to toggle source

Inserts the given jsonb value at the given path in the receiver. The default is to insert the value before the given path, but insert_after can be set to true to insert it after the given path.

jsonb_op.insert(['a', 'b'], h) # jsonb_insert(jsonb, ARRAY['a', 'b'], h, false)
jsonb_op.insert(['a', 'b'], h, true) # jsonb_insert(jsonb, ARRAY['a', 'b'], h, true)
# File lib/sequel/extensions/pg_json_ops.rb, line 380
def insert(path, other, insert_after=false)
  self.class.new(function(:insert, wrap_input_array(path), wrap_input_jsonb(other), insert_after))
end
path_exists(path) click to toggle source

Returns whether the JSON path returns any item for the json object.

json_op.path_exists("$.foo") # (json @? '$.foo')
# File lib/sequel/extensions/pg_json_ops.rb, line 387
def path_exists(path)
  bool_op(PATH_EXISTS, path)
end
path_exists!(path, vars=nil, silent=nil) click to toggle source

Returns whether the JSON path returns any item for the json object.

json_op.path_exists!("$.foo")
# jsonb_path_exists(json, '$.foo')

json_op.path_exists!("$.foo ? ($ > $x)", x: 2)
# jsonb_path_exists(json, '$.foo ? ($ > $x)', '{"x":2}')

json_op.path_exists!("$.foo ? ($ > $x)", {x: 2}, true)
# jsonb_path_exists(json, '$.foo ? ($ > $x)', '{"x":2}', true)
# File lib/sequel/extensions/pg_json_ops.rb, line 401
def path_exists!(path, vars=nil, silent=nil)
  Sequel::SQL::BooleanExpression.new(:NOOP, _path_function(:jsonb_path_exists, path, vars, silent))
end
path_match(path) click to toggle source

Returns the first item of the result of JSON path predicate check for the json object. Returns nil if the first item is not true or false.

json_op.path_match("$.foo") # (json @@ '$.foo')
# File lib/sequel/extensions/pg_json_ops.rb, line 409
def path_match(path)
  bool_op(PATH_MATCH, path)
end
path_match!(path, vars=nil, silent=nil) click to toggle source

Returns the first item of the result of JSON path predicate check for the json object. Returns nil if the first item is not true or false and silent is true.

json_op.path_match!("$.foo")
# jsonb_path_match(json, '$.foo')

json_op.path_match!("$.foo ? ($ > $x)", x: 2)
# jsonb_path_match(json, '$.foo ? ($ > $x)', '{"x":2}')

json_op.path_match!("$.foo ? ($ > $x)", {x: 2}, true)
# jsonb_path_match(json, '$.foo ? ($ > $x)', '{"x":2}', true)
# File lib/sequel/extensions/pg_json_ops.rb, line 424
def path_match!(path, vars=nil, silent=nil)
  Sequel::SQL::BooleanExpression.new(:NOOP, _path_function(:jsonb_path_match, path, vars, silent))
end
path_query(path, vars=nil, silent=nil) click to toggle source

Returns a set of all jsonb values specified by the JSON path for the json object.

json_op.path_query("$.foo")
# jsonb_path_query(json, '$.foo')

json_op.path_query("$.foo ? ($ > $x)", x: 2)
# jsonb_path_query(json, '$.foo ? ($ > $x)', '{"x":2}')

json_op.path_query("$.foo ? ($ > $x)", {x: 2}, true)
# jsonb_path_query(json, '$.foo ? ($ > $x)', '{"x":2}', true)
# File lib/sequel/extensions/pg_json_ops.rb, line 439
def path_query(path, vars=nil, silent=nil)
  _path_function(:jsonb_path_query, path, vars, silent)
end
path_query_array(path, vars=nil, silent=nil) click to toggle source

Returns a jsonb array of all values specified by the JSON path for the json object.

json_op.path_query_array("$.foo")
# jsonb_path_query_array(json, '$.foo')

json_op.path_query_array("$.foo ? ($ > $x)", x: 2)
# jsonb_path_query_array(json, '$.foo ? ($ > $x)', '{"x":2}')

json_op.path_query_array("$.foo ? ($ > $x)", {x: 2}, true)
# jsonb_path_query_array(json, '$.foo ? ($ > $x)', '{"x":2}', true)
# File lib/sequel/extensions/pg_json_ops.rb, line 454
def path_query_array(path, vars=nil, silent=nil)
  JSONBOp.new(_path_function(:jsonb_path_query_array, path, vars, silent))
end
path_query_first(path, vars=nil, silent=nil) click to toggle source

Returns the first item of the result specified by the JSON path for the json object.

json_op.path_query_first("$.foo")
# jsonb_path_query_first(json, '$.foo')

json_op.path_query_first("$.foo ? ($ > $x)", x: 2)
# jsonb_path_query_first(json, '$.foo ? ($ > $x)', '{"x":2}')

json_op.path_query_first("$.foo ? ($ > $x)", {x: 2}, true)
# jsonb_path_query_first(json, '$.foo ? ($ > $x)', '{"x":2}', true)
# File lib/sequel/extensions/pg_json_ops.rb, line 469
def path_query_first(path, vars=nil, silent=nil)
  JSONBOp.new(_path_function(:jsonb_path_query_first, path, vars, silent))
end
pg_jsonb() click to toggle source

Return the receiver, since it is already a JSONBOp.

# File lib/sequel/extensions/pg_json_ops.rb, line 474
def pg_jsonb
  self
end
pretty() click to toggle source

Return a pretty printed version of the receiver as a string expression.

jsonb_op.pretty # jsonb_pretty(jsonb)
# File lib/sequel/extensions/pg_json_ops.rb, line 481
def pretty
  Sequel::SQL::StringExpression.new(:NOOP, function(:pretty))
end
set(path, other, create_missing=true) click to toggle source

Set the given jsonb value at the given path in the receiver. By default, this will create the value if it does not exist, but create_missing can be set to false to not create a new value.

jsonb_op.set(['a', 'b'], h) # jsonb_set(jsonb, ARRAY['a', 'b'], h, true)
jsonb_op.set(['a', 'b'], h, false) # jsonb_set(jsonb, ARRAY['a', 'b'], h, false)
# File lib/sequel/extensions/pg_json_ops.rb, line 491
def set(path, other, create_missing=true)
  self.class.new(function(:set, wrap_input_array(path), wrap_input_jsonb(other), create_missing))
end

Private Instance Methods

_path_function(func, path, vars, silent) click to toggle source

Internals of the jsonb SQL/JSON path functions.

# File lib/sequel/extensions/pg_json_ops.rb, line 498
def _path_function(func, path, vars, silent)
  args = []
  if vars
    if vars.is_a?(Hash)
      vars = vars.to_json
    end
    args << vars

    unless silent.nil?
      args << silent
    end
  end
  SQL::Function.new(func, self, path, *args)
end
bool_op(str, other) click to toggle source

Return a placeholder literal with the given str and args, wrapped in a boolean expression, used by operators that return booleans.

# File lib/sequel/extensions/pg_json_ops.rb, line 515
def bool_op(str, other)
  Sequel::SQL::BooleanExpression.new(:NOOP, Sequel::SQL::PlaceholderLiteralString.new(str, [value, other]))
end
function_name(name) click to toggle source

The jsonb type functions are prefixed with jsonb_

# File lib/sequel/extensions/pg_json_ops.rb, line 538
def function_name(name)
  "jsonb_#{name}"
end
wrap_input_array(obj) click to toggle source

Wrap argument in a PGArray if it is an array

# File lib/sequel/extensions/pg_json_ops.rb, line 520
def wrap_input_array(obj)
  if obj.is_a?(Array) && Sequel.respond_to?(:pg_array) 
    Sequel.pg_array(obj)
  else
    obj
  end
end
wrap_input_jsonb(obj) click to toggle source

Wrap argument in a JSONBArray or JSONBHash if it is an array or hash.

# File lib/sequel/extensions/pg_json_ops.rb, line 529
def wrap_input_jsonb(obj)
  if Sequel.respond_to?(:pg_jsonb) && (obj.is_a?(Array) || obj.is_a?(Hash))
    Sequel.pg_jsonb(obj)
  else
    obj
  end
end