class Sequel::Amalgalite::Database
Public Instance Methods
connect(server)
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Connect to the database. Since SQLite
is a file based database, the only options available are :database (to specify the database name), and :timeout, to specify how long to wait for the database to be available if it is locked, given in milliseconds (default is 5000).
# File lib/sequel/adapters/amalgalite.rb 74 def connect(server) 75 opts = server_opts(server) 76 opts[:database] = ':memory:' if blank_object?(opts[:database]) 77 db = ::Amalgalite::Database.new(opts[:database]) 78 db.busy_handler(::Amalgalite::BusyTimeout.new(opts.fetch(:timeout, 5000)/50, 50)) 79 db.type_map = SequelTypeMap.new(self) 80 connection_pragmas.each{|s| log_connection_yield(s, db){db.execute_batch(s)}} 81 db 82 end
database_type()
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# File lib/sequel/adapters/amalgalite.rb 84 def database_type 85 :sqlite 86 end
execute(sql, opts=OPTS) { |stmt = log_connection_yield(sql, conn){prepare}| ... }
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# File lib/sequel/adapters/amalgalite.rb 101 def execute(sql, opts=OPTS) 102 _execute(sql, opts) do |conn| 103 begin 104 yield(stmt = log_connection_yield(sql, conn){conn.prepare(sql)}) 105 ensure 106 stmt.close if stmt 107 end 108 end 109 end
execute_ddl(sql, opts=OPTS)
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# File lib/sequel/adapters/amalgalite.rb 88 def execute_ddl(sql, opts=OPTS) 89 _execute(sql, opts){|conn| log_connection_yield(sql, conn){conn.execute_batch(sql)}} 90 nil 91 end
execute_dui(sql, opts=OPTS)
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# File lib/sequel/adapters/amalgalite.rb 93 def execute_dui(sql, opts=OPTS) 94 _execute(sql, opts){|conn| log_connection_yield(sql, conn){conn.execute_batch(sql)}; conn.row_changes} 95 end
execute_insert(sql, opts=OPTS)
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# File lib/sequel/adapters/amalgalite.rb 97 def execute_insert(sql, opts=OPTS) 98 _execute(sql, opts){|conn| log_connection_yield(sql, conn){conn.execute_batch(sql)}; conn.last_insert_rowid} 99 end
single_value(sql, opts=OPTS)
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Run the given SQL
with the given arguments and return the first value of the first row.
# File lib/sequel/adapters/amalgalite.rb 112 def single_value(sql, opts=OPTS) 113 _execute(sql, opts){|conn| log_connection_yield(sql, conn){conn.first_value_from(sql)}} 114 end
Private Instance Methods
_execute(sql, opts) { |conn| ... }
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Yield an available connection. Rescue any Amalgalite::Errors and turn them into DatabaseErrors.
# File lib/sequel/adapters/amalgalite.rb 120 def _execute(sql, opts) 121 synchronize(opts[:server]){|conn| yield conn} 122 rescue ::Amalgalite::Error, ::Amalgalite::SQLite3::Error => e 123 raise_error(e) 124 end
connection_pool_default_options()
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The Amagalite adapter does not need the pool to convert exceptions. Also, force the max connections to 1 if a memory database is being used, as otherwise each connection gets a separate database.
Calls superclass method
Sequel::Database#connection_pool_default_options
# File lib/sequel/adapters/amalgalite.rb 129 def connection_pool_default_options 130 o = super.dup 131 # Default to only a single connection if a memory database is used, 132 # because otherwise each connection will get a separate database 133 o[:max_connections] = 1 if @opts[:database] == ':memory:' || blank_object?(@opts[:database]) 134 o 135 end
database_error_classes()
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# File lib/sequel/adapters/amalgalite.rb 141 def database_error_classes 142 [::Amalgalite::Error, ::Amalgalite::SQLite3::Error] 143 end
dataset_class_default()
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# File lib/sequel/adapters/amalgalite.rb 137 def dataset_class_default 138 Dataset 139 end