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# File 'lib/sdbcli/sdb-runner.rb', line 206
def execute(query, inline = true, consistent = false)
parsed = Parser.parse(query)
command = parsed.class.name.split('::').last.to_sym
case command
when :GET
item = @driver.get(parsed.domain, parsed.item_name, parsed.attr_names, consistent)
item.inline! if inline
item
when :INSERT
rownum = parsed.items.length
@driver.insert(parsed.domain, parsed.items)
Rownum.new(rownum)
when :UPDATE
rownum = parsed.items.length
@driver.update(parsed.domain, parsed.items)
Rownum.new(rownum)
when :UPDATE_WITH_EXPR
query = "SELECT itemName FROM #{parsed.domain} #{parsed.expr}"
items = @driver.select(query, consistent).map {|i| [i[0], parsed.attrs] }
rownum = items.length
@driver.update(parsed.domain, items)
Rownum.new(rownum)
when :MERGE
rownum = parsed.items.length
@driver.insert(parsed.domain, parsed.items)
Rownum.new(rownum)
when :MERGE_WITH_EXPR
query = "SELECT itemName FROM #{parsed.domain} #{parsed.expr}"
items = @driver.select(query, consistent).map {|i| [i[0], parsed.attrs] }
rownum = items.length
@driver.insert(parsed.domain, items)
Rownum.new(rownum)
when :DELETE
rownum = parsed.items.length
@driver.delete(parsed.domain, parsed.items)
Rownum.new(rownum)
when :DELETE_WITH_EXPR
query = "SELECT itemName FROM #{parsed.domain} #{parsed.expr}"
items = @driver.select(query, consistent).map {|i| [i[0], parsed.attrs] }
rownum = items.length
@driver.delete(parsed.domain, items)
Rownum.new(rownum)
when :SELECT, :NEXT, :CURRENT, :PREV, :PAGE, :TAIL
items = case command
when :SELECT
@driver.select(parsed.query, consistent, true)
when :NEXT
@driver.next_list(consistent)
when :CURRENT
@driver.current_list(consistent)
when :PREV
@driver.prev_list(consistent)
when :PAGE
parsed.page ? @driver.page_to(parsed.page, consistent) : @driver.current_page
when :TAIL
@driver.tail(parsed.domain, consistent)
else
raise 'must not happen'
end
unless items.kind_of?(Integer)
items.as_rows!
items.each do |item|
item.as_row!
end
def items.group_by(name, &block)
item_h = {}
self.each do |item|
key = item[1][name.to_s]
unless item_h[key]
item_list = [].as_rows
item_h[key] = item_list
end
item_h[key] << item
end
if block
old_item_h = item_h
item_h = {}
old_item_h.each do |key, item_list|
if block.arity == 2
new_item_list = block.call(item_list, key)
else
new_item_list = block.call(item_list)
end
item_h[key] = new_item_list
end
end
item_h
end
end
if parsed.script
begin
case parsed.script_type
when :ruby
items = items.instance_eval(parsed.script.strip)
when :shell
items = IO.popen(parsed.script.strip, "r+") do |f|
f.puts(items.kind_of?(Array) ? items.map {|i| i.to_s }.join("\n") : items.to_s)
f.close_write
f.read
end
else
raise 'must not happen'
end
rescue Exception => e
raise SimpleDB::Error, e.message
end
end
if inline and items.kind_of?(Array)
items.each do |item|
item.inline! if item.kind_of?(Array)
end
end
items
when :CREATE
@driver.create_domain(parsed.domain)
nil
when :DROP
@driver.drop_domain(parsed.domain)
nil
when :SHOW
case parsed.operand
when :domains
@driver.show_domains
when :regions
SimpleDB::REGIONS.values.sort
else
raise 'must not happen'
end
when :USE
self.endpoint = parsed.endpoint
nil
when :DESCRIBE
@driver.describe(parsed.domain)
when :RUBY
eval(parsed.script.strip)
when :EXEC
`#{parsed.script.strip}`
else
raise 'must not happen'
end
end
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