Class: Sequel::JDBC::Dataset

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

Defined Under Namespace

Modules: PreparedStatementMethods, StoredProcedureMethods

Constant Summary

Constants inherited from Dataset

Dataset::ACTION_METHODS, Dataset::ALL, Dataset::AND_SEPARATOR, Dataset::APOS, Dataset::APOS_RE, Dataset::ARG_BLOCK_ERROR_MSG, Dataset::ARRAY_ACCESS_ERROR_MSG, Dataset::ARRAY_EMPTY, Dataset::AS, Dataset::ASC, Dataset::BACKSLASH, Dataset::BITCOMP_CLOSE, Dataset::BITCOMP_OPEN, Dataset::BITWISE_METHOD_MAP, 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::DATETIME_SECFRACTION_ARG, Dataset::DEFAULT, Dataset::DEFAULT_VALUES, Dataset::DELETE, 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::FILTER, Dataset::FORMAT_DATE, Dataset::FORMAT_DATE_STANDARD, Dataset::FORMAT_OFFSET, Dataset::FORMAT_TIMESTAMP_RE, Dataset::FORMAT_USEC, Dataset::FOR_UPDATE, Dataset::FRAME_ALL, Dataset::FRAME_ROWS, Dataset::FROM, Dataset::FUNCTION_DISTINCT, Dataset::GROUP_BY, Dataset::HAVING, Dataset::IMPORT_ERROR_MSG, Dataset::INSERT, 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::UNION_ALL_SELECT, Dataset::UPDATE, Dataset::USING, Dataset::VALUES, Dataset::WHERE, Dataset::WILDCARD, Dataset::WITHIN_GROUP, Dataset::WITH_ORDINALITY

Instance Attribute Summary collapse

Attributes inherited from Dataset

#db, #opts, #row_proc

Instance Method Summary collapse

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!, #complex_expression_sql_append, #constant_sql_append, #count, #current_datetime, def_mutation_method, def_sql_method, #delayed_evaluation_sql_append, #delete, #distinct, #dup, #each, #each_server, #empty?, #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, #joined_dataset?, #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, #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?, #requires_sql_standard_datetimes?, #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, #server, #server?, #set_graph_aliases, #single_record, #single_value, #split_alias, #split_qualifiers, #sql, #subscript_sql_append, #sum, #supports_cte?, #supports_cte_in_subqueries?, #supports_derived_column_lists?, #supports_distinct_on?, #supports_group_cube?, #supports_group_rollup?, #supports_insert_select?, #supports_intersect_except?, #supports_intersect_except_all?, #supports_is_true?, #supports_join_using?, #supports_lateral_subqueries?, #supports_limits_in_correlated_subqueries?, #supports_modifying_joins?, #supports_multiple_column_in?, #supports_offsets_in_correlated_subqueries?, #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, #unqualified_column_for, #unused_table_alias, #update, #update_sql, #where, #window_sql_append, #with, #with_recursive, #with_sql, #with_sql_all, #with_sql_delete, #with_sql_each, #with_sql_first, #with_sql_insert, #with_sql_single_value

Methods included from Metaprogramming

#meta_def

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 Attribute Details

#convert_types ⇒ Object

Whether to convert some Java types to ruby types when retrieving rows. Uses the database’s setting by default, can be set to false to roughly double performance when fetching rows.



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# File 'lib/sequel/adapters/jdbc.rb', line 721

def convert_types
  @convert_types
end

Instance Method Details

#fetch_rows(sql, &block) ⇒ Object

Correctly return rows from the database and return them as hashes.



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# File 'lib/sequel/adapters/jdbc.rb', line 724

def fetch_rows(sql, &block)
  execute(sql){|result| process_result_set(result, &block)}
  self
end

#prepare(type, name = nil, *values) ⇒ Object

Create a named prepared statement that is stored in the database (and connection) for reuse.



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# File 'lib/sequel/adapters/jdbc.rb', line 731

def prepare(type, name=nil, *values)
  ps = to_prepared_statement(type, values)
  ps.extend(PreparedStatementMethods)
  if name
    ps.prepared_statement_name = name
    db.set_prepared_statement(name, ps)
  end
  ps
end

#with_fetch_size(size) ⇒ Object

Set the fetch size on JDBC ResultSets created from this dataset.



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# File 'lib/sequel/adapters/jdbc.rb', line 742

def with_fetch_size(size)
  clone(:fetch_size=>size)
end