Class: Sequel::JDBC::H2::Dataset

Inherits:
Dataset show all
Defined in:
lib/sequel/adapters/jdbc/h2.rb

Overview

Dataset class for H2 datasets accessed via JDBC.

Constant Summary

SELECT_CLAUSE_METHODS =
clause_methods(:select, %w'select distinct columns from join where group having compounds order limit')
BITWISE_METHOD_MAP =
{:& =>:BITAND, :| => :BITOR, :^ => :BITXOR}
APOS =
Dataset::APOS
HSTAR =
"H*".freeze
BITCOMP_OPEN =
"((0 - ".freeze
BITCOMP_CLOSE =
") - 1)".freeze
ILIKE_PLACEHOLDER =
["CAST(".freeze, " AS VARCHAR_IGNORECASE)".freeze].freeze
TIME_FORMAT =
"'%H:%M:%S'".freeze

Constants inherited from Dataset

Dataset::ACTION_METHODS, Dataset::ALL, Dataset::AND_SEPARATOR, Dataset::APOS_RE, Dataset::ARG_BLOCK_ERROR_MSG, Dataset::ARRAY_ACCESS_ERROR_MSG, Dataset::ARRAY_EMPTY, Dataset::AS, Dataset::ASC, Dataset::BACKSLASH, Dataset::BOOL_FALSE, Dataset::BOOL_TRUE, Dataset::BRACKET_CLOSE, Dataset::BRACKET_OPEN, Dataset::CASE_ELSE, Dataset::CASE_END, Dataset::CASE_OPEN, Dataset::CASE_THEN, Dataset::CASE_WHEN, Dataset::CAST_OPEN, Dataset::COLON, Dataset::COLUMN_CHANGE_OPTS, Dataset::COLUMN_REF_RE1, Dataset::COLUMN_REF_RE2, Dataset::COLUMN_REF_RE3, Dataset::COMMA, Dataset::COMMA_SEPARATOR, Dataset::CONDITIONED_JOIN_TYPES, Dataset::CONDITION_FALSE, Dataset::CONDITION_TRUE, Dataset::COUNT_FROM_SELF_OPTS, Dataset::COUNT_OF_ALL_AS_COUNT, Dataset::DATASET_ALIAS_BASE_NAME, Dataset::DEFAULT, Dataset::DEFAULT_VALUES, Dataset::DELETE, Dataset::DELETE_CLAUSE_METHODS, Dataset::DESC, Dataset::DISTINCT, Dataset::DOT, Dataset::DOUBLE_APOS, Dataset::DOUBLE_QUOTE, Dataset::EMULATED_FUNCTION_MAP, Dataset::EQUAL, Dataset::ESCAPE, Dataset::EXISTS, Dataset::EXTENSIONS, Dataset::EXTRACT, Dataset::FORMAT_DATE, Dataset::FORMAT_DATE_STANDARD, Dataset::FORMAT_OFFSET, Dataset::FORMAT_TIMESTAMP_RE, Dataset::FORMAT_TIMESTAMP_USEC, Dataset::FORMAT_USEC, Dataset::FOR_UPDATE, Dataset::FRAME_ALL, Dataset::FRAME_ROWS, Dataset::FROM, Dataset::FUNCTION_EMPTY, Dataset::GROUP_BY, Dataset::HAVING, Dataset::IMPORT_ERROR_MSG, Dataset::INSERT, Dataset::INSERT_CLAUSE_METHODS, Dataset::INTO, Dataset::IS_LITERALS, Dataset::IS_OPERATORS, Dataset::JOIN_METHODS, Dataset::LATERAL, Dataset::LIKE_OPERATORS, Dataset::LIMIT, Dataset::MUTATION_METHODS, Dataset::NON_SQL_OPTIONS, Dataset::NOTIMPL_MSG, Dataset::NOT_SPACE, Dataset::NULL, Dataset::NULLS_FIRST, Dataset::NULLS_LAST, Dataset::N_ARITY_OPERATORS, Dataset::OFFSET, Dataset::ON, Dataset::ON_PAREN, Dataset::OPTS, Dataset::ORDER_BY, Dataset::ORDER_BY_NS, Dataset::OVER, Dataset::PAREN_CLOSE, Dataset::PAREN_OPEN, Dataset::PAREN_SPACE_OPEN, Dataset::PARTITION_BY, Dataset::PREPARED_ARG_PLACEHOLDER, Dataset::QUALIFY_KEYS, Dataset::QUERY_METHODS, Dataset::QUESTION_MARK, Dataset::QUESTION_MARK_RE, Dataset::QUOTE, Dataset::QUOTE_RE, Dataset::REGEXP_OPERATORS, Dataset::RETURNING, Dataset::SELECT, Dataset::SET, Dataset::SPACE, Dataset::SPACE_WITH, Dataset::SQL_WITH, Dataset::STANDARD_TIMESTAMP_FORMAT, Dataset::TILDE, Dataset::TIMESTAMP_FORMAT, Dataset::TWO_ARITY_OPERATORS, Dataset::UNCONDITIONED_JOIN_TYPES, Dataset::UNDERSCORE, Dataset::UPDATE, Dataset::UPDATE_CLAUSE_METHODS, Dataset::USING, Dataset::V190, Dataset::VALUES, Dataset::WHERE, Dataset::WILDCARD

Instance Attribute Summary

Attributes inherited from Dataset

#convert_types

Attributes inherited from Dataset

#db, #opts, #row_proc

Instance Method Summary (collapse)

Methods inherited from Dataset

#fetch_rows, #prepare

Methods inherited from Dataset

#<<, #==, #[], #add_graph_aliases, #aliased_expression_sql_append, #all, #and, #array_sql_append, #avg, #bind, #boolean_constant_sql_append, #call, #case_expression_sql_append, #cast_sql_append, clause_methods, #clone, #column_all_sql_append, #columns, #columns!, #constant_sql_append, #count, def_mutation_method, #delayed_evaluation_sql_append, #delete, #delete_sql, #distinct, #dup, #each, #each_server, #empty?, #emulated_function_sql_append, #eql?, #escape_like, #except, #exclude, #exclude_having, #exclude_where, #exists, #extension, #extension!, #filter, #first, #first!, #first_source, #first_source_alias, #first_source_table, #for_update, #freeze, #from, #from_self, #from_self!, #frozen?, #function_sql_append, #get, #graph, #grep, #group, #group_and_count, #group_by, #group_cube, #group_rollup, #hash, #having, #identifier_input_method, #identifier_input_method=, #identifier_output_method, #identifier_output_method=, #import, #initialize, #insert, #insert_sql, #inspect, #intersect, #interval, #invert, #join, #join_clause_sql_append, #join_on_clause_sql_append, #join_table, #join_using_clause_sql_append, #last, #lateral, #limit, #literal_append, #lock_style, #map, #max, #min, #multi_insert, #multi_insert_sql, #naked, #naked!, #negative_boolean_constant_sql_append, #offset, #or, #order, #order_append, #order_by, #order_more, #order_prepend, #ordered_expression_sql_append, #paged_each, #placeholder_literal_string_sql_append, #prepare, #provides_accurate_rows_matched?, #qualified_identifier_sql_append, #qualify, #quote_identifier_append, #quote_identifiers=, #quote_identifiers?, #quote_schema_table_append, #quoted_identifier_append, #range, #recursive_cte_requires_column_aliases?, register_extension, #requires_placeholder_type_specifiers?, #returning, #reverse, #reverse_order, #row_number_column, #schema_and_table, #select, #select_all, #select_append, #select_group, #select_hash, #select_hash_groups, #select_map, #select_more, #select_order_map, #select_sql, #server, #set_graph_aliases, #single_record, #single_value, #split_alias, #split_qualifiers, #sql, #subscript_sql_append, #sum, #supports_cte?, #supports_cte_in_subqueries?, #supports_distinct_on?, #supports_group_cube?, #supports_group_rollup?, #supports_insert_select?, #supports_intersect_except?, #supports_intersect_except_all?, #supports_lateral_subqueries?, #supports_modifying_joins?, #supports_ordered_distinct_on?, #supports_regexp?, #supports_replace?, #supports_returning?, #supports_select_all_and_column?, #supports_timestamp_timezones?, #supports_timestamp_usecs?, #supports_where_true?, #supports_window_functions?, #to_hash, #to_hash_groups, #truncate, #truncate_sql, #unbind, #unfiltered, #ungraphed, #ungrouped, #union, #unlimited, #unordered, #unused_table_alias, #update, #update_sql, #where, #window_function_sql_append, #window_sql_append, #with, #with_recursive, #with_sql, #with_sql_delete

Methods included from SQL::StringMethods

#ilike, #like

Methods included from SQL::OrderMethods

#asc, #desc

Methods included from SQL::NumericMethods

#+

Methods included from SQL::ComplexExpressionMethods

#extract, #sql_boolean, #sql_number, #sql_string

Methods included from SQL::CastMethods

#cast, #cast_numeric, #cast_string

Methods included from SQL::BooleanMethods

#~

Methods included from SQL::AliasMethods

#as

Constructor Details

This class inherits a constructor from Sequel::Dataset

Instance Method Details

- (Object) complex_expression_sql_append(sql, op, args)

Emulate the case insensitive LIKE operator and the bitwise operators.



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# File 'lib/sequel/adapters/jdbc/h2.rb', line 155

def complex_expression_sql_append(sql, op, args)
  case op
  when :ILIKE, :NOT ILIKE"
    super(sql, (op == :ILIKE ? :LIKE : :NOT LIKE"), [SQL::PlaceholderLiteralString.new(ILIKE_PLACEHOLDER, [args.at(0)]), args.at(1)])
  when :&, :|, :^
    sql << complex_expression_arg_pairs(args){|a, b| literal(SQL::Function.new(BITWISE_METHOD_MAP[op], a, b))}
  when :<<
    sql << complex_expression_arg_pairs(args){|a, b| "(#{literal(a)} * POWER(2, #{literal(b)}))"}
  when :>>
    sql << complex_expression_arg_pairs(args){|a, b| "(#{literal(a)} / POWER(2, #{literal(b)}))"}
  when :B~'
    sql << BITCOMP_OPEN
    literal_append(sql, args.at(0))
    sql << BITCOMP_CLOSE
  else
    super
  end
end

- (Boolean) requires_sql_standard_datetimes?

H2 requires SQL standard datetimes



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# File 'lib/sequel/adapters/jdbc/h2.rb', line 175

def requires_sql_standard_datetimes?
  true
end

- (Boolean) supports_is_true?

H2 doesn't support IS TRUE



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# File 'lib/sequel/adapters/jdbc/h2.rb', line 180

def supports_is_true?
  false
end

- (Boolean) supports_join_using?

H2 doesn't support JOIN USING



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# File 'lib/sequel/adapters/jdbc/h2.rb', line 185

def supports_join_using?
  false
end

- (Boolean) supports_multiple_column_in?

H2 doesn't support multiple columns in IN/NOT IN



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# File 'lib/sequel/adapters/jdbc/h2.rb', line 190

def supports_multiple_column_in?
  false
end