Class: Sequel::DB2::Dataset
Constant Summary
collapse
- MAX_COL_SIZE =
256
Sequel::Dataset::AND_SEPARATOR, Sequel::Dataset::BOOL_FALSE, Sequel::Dataset::BOOL_TRUE, Sequel::Dataset::COLUMN_CHANGE_OPTS, Sequel::Dataset::COLUMN_REF_RE1, Sequel::Dataset::COLUMN_REF_RE2, Sequel::Dataset::COLUMN_REF_RE3, Sequel::Dataset::COMMA_SEPARATOR, Sequel::Dataset::COUNT_FROM_SELF_OPTS, Sequel::Dataset::COUNT_OF_ALL_AS_COUNT, Sequel::Dataset::DATASET_CLASSES, Sequel::Dataset::DATE_FORMAT, Sequel::Dataset::MUTATION_METHODS, Sequel::Dataset::NOTIMPL_MSG, Sequel::Dataset::NULL, Sequel::Dataset::N_ARITY_OPERATORS, Sequel::Dataset::QUESTION_MARK, Sequel::Dataset::STOCK_COUNT_OPTS, Sequel::Dataset::STOCK_TRANSFORMS, Sequel::Dataset::TIMESTAMP_FORMAT, Sequel::Dataset::TWO_ARITY_OPERATORS, Sequel::Dataset::WILDCARD
Instance Attribute Summary
#db, #opts, #quote_identifiers, #row_proc
Instance Method Summary
collapse
#<<, #[], #[]=, #aliased_expression_sql, #all, #and, #as, #avg, #case_expression_sql, #clone, #column_all_sql, #columns, #columns!, #complex_expression_sql, #count, #create_or_replace_view, #create_view, dataset_classes, #def_mutation_method, def_mutation_method, #delete_sql, #each, #each_page, #empty?, #except, #exclude, #exists, #filter, #first, #first_source, #from, #from_self, #function_sql, #get, #graph, #grep, #group, #group_and_count, #having, inherited, #initialize, #insert_multiple, #insert_sql, #inspect, #intersect, #interval, #invert, #irregular_function_sql, #join_clause_sql, #join_on_clause_sql, #join_table, #join_using_clause_sql, #last, #limit, #map, #max, #min, #model_classes, #multi_insert, #multi_insert_sql, #naked, #or, #order, #order_more, #ordered_expression_sql, #paginate, #polymorphic_key, #print, #qualified_identifier_sql, #query, #quote_identifier, #quote_identifiers?, #quoted_identifier, #range, #reverse_order, #select, #select_all, #select_more, #select_sql, #set, #set_graph_aliases, #set_model, #single_record, #single_value, #subscript_sql, #sum, #symbol_to_column_ref, #table_exists?, #to_csv, #to_hash, #transform, #transform_load, #transform_save, #unfiltered, #union, #uniq, #unordered, #update_sql
Methods included from Enumerable
#send_each
Instance Method Details
#convert_type(v) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 131
def convert_type(v)
case v
when DB2CLI::Date
DBI::Date.new(v.year, v.month, v.day)
when DB2CLI::Time
DBI::Time.new(v.hour, v.minute, v.second)
when DB2CLI::Timestamp
DBI::Timestamp.new(v.year, v.month, v.day,
v.hour, v.minute, v.second, v.fraction)
when DB2CLI::Null
nil
else
v
end
end
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#delete(opts = nil) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 155
def delete(opts = nil)
@db.do delete_sql(opts)
end
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#fetch_rows(sql, &block) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 92
def fetch_rows(sql, &block)
@db.synchronize do
@db.execute(sql) do |sth|
@column_info = get_column_info(sth)
@columns = @column_info.map {|c| c[:name]}
while (rc = SQLFetch(@handle)) != SQL_NO_DATA_FOUND
@db.check_error(rc, "Could not fetch row")
yield hash_row(sth)
end
end
end
self
end
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#get_column_info(sth) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 108
def get_column_info(sth)
rc, column_count = SQLNumResultCols(sth)
@db.check_error(rc, "Could not get number of result columns")
(1..column_count).map do |i|
rc, name, buflen, datatype, size, digits, nullable = SQLDescribeCol(sth, i, MAX_COL_SIZE)
@b.check_error(rc, "Could not describe column")
{:name => name, :db2_type => datatype, :precision => size}
end
end
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#hash_row(sth) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 120
def hash_row(sth)
row = {}
@column_info.each_with_index do |c, i|
rc, v = SQLGetData(sth, i+1, c[:db2_type], c[:precision])
@db.check_error(rc, "Could not get data")
@row[c[:name]] = convert_type(v)
end
row
end
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#insert(*values) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 147
def insert(*values)
@db.do insert_sql(*values)
end
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#literal(v) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 81
def literal(v)
case v
when Time
literal(v.iso8601)
when Date, DateTime
literal(v.to_s)
else
super
end
end
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#update(*args, &block) ⇒ Object
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# File 'lib/sequel_core/adapters/db2.rb', line 151
def update(*args, &block)
@db.do update_sql(*args, &block)
end
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