opt_explain_json_namespace::table_base_ctx Class Reference

Inheritance diagram for opt_explain_json_namespace::table_base_ctx:

List of all members.

Public Member Functions
	table_base_ctx (Explain_context_enum type_arg, const char *name_arg, context *parent_arg)
virtual qep_row *	entry ()
virtual size_t	id (bool hide)
virtual bool	cacheable ()
virtual bool	dependent ()
Protected Member Functions
virtual bool	format_body (Opt_trace_context *json, Opt_trace_object *obj)
Protected Attributes
bool	is_hidden_id

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Member Function Documentation

bool opt_explain_json_namespace::table_base_ctx::format_body	(	Opt_trace_context *	json,
		Opt_trace_object *	obj
	)		[protected, virtual]

Format JSON object body

Parameters:

json	Formatter
obj	Object of this body

Return values:

false	Ok
true	Error

Implements opt_explain_json_namespace::context.

Reimplemented in opt_explain_json_namespace::join_tab_ctx, opt_explain_json_namespace::message_ctx, and opt_explain_json_namespace::union_result_ctx.

virtual size_t opt_explain_json_namespace::table_base_ctx::id

(

bool

hide

)

[inline, virtual]

Analogue of the "id" column in the traditional EXPLAIN output

Parameters:

hide	if true, ban the output of K_SELECT_ID JSON property in the underlying table_with_where_and_derived_ctx objects

Returns:

"Select number" that is associated with this node

Implements opt_explain_json_namespace::context.

Reimplemented in opt_explain_json_namespace::materialize_ctx, opt_explain_json_namespace::join_tab_ctx, opt_explain_json_namespace::message_ctx, opt_explain_json_namespace::table_with_where_and_derived, and opt_explain_json_namespace::union_result_ctx.

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The documentation for this class was generated from the following file:

• opt_explain_json.cc