Class: FluidDb::SQLite
- Inherits:
-
Base
- Object
- Base
- FluidDb::SQLite
show all
- Defined in:
- lib/FluidDb/SQLite.rb
Instance Attribute Summary
Attributes inherited from Base
#connection, #verbose
Instance Method Summary
collapse
Methods inherited from Base
#convertTupleToHash, #escape_string, #format_to_sql, #initialize, #reconnect, #splice_sql, #verboseLog
Constructor Details
This class inherits a constructor from FluidDb::Base
Instance Method Details
#Begin ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 113
def Begin
@connection.transaction
end
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#close ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 16
def close
@connection.close
end
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#Commit ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 118
def Commit
@connection.commit
end
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#connect ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 11
def connect()
uri = @uri
@connection = SQLite3::Database.new uri.path
end
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#exec_params(sql, params = [], expected_affected_rows = nil) ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 97
def exec_params( sql, params=[], expected_affected_rows=nil )
parts = sql.split( "?" )
sql = ""
parts.each_with_index do |p,idx|
sql = sql + p;
sql = sql + "$#{idx+1}" if idx < parts.length - 1
end
r = @connection.exec_params( sql, params );
if !expected_affected_rows.nil? and
r.changes != expected_affected_rows then
raise ExpectedAffectedRowsError.new( "Expected affected rows, #{expected_affected_rows}, Actual affected rows, #{r.cmd_tuples}")
end
end
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#execute(sql, params = [], expected_affected_rows = nil) ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 85
def execute( sql, params=[], expected_affected_rows=nil )
sql = self.format_to_sql( sql, params )
self.verboseLog( "#{self.class.name}.execute. #{sql}" )
r = @connection.execute(sql)
if !expected_affected_rows.nil? and
r.changes != expected_affected_rows then
raise ExpectedAffectedRowsError.new( "Expected affected rows, #{expected_affected_rows}, Actual affected rows, #{r.cmd_tuples}")
end
end
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#insert(sql, params) ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 127
def insert( sql, params )
raise "SQLite uses SEQUENCES, so possibly easier to use 2 executes"
end
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#queryForArray(sql, params = []) ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 20
def queryForArray( sql, params=[] )
sql = self.format_to_sql( sql, params )
@connection.results_as_hash = true
results = @connection.execute(sql)
case results.length
when -1
raise FluidDb::ConnectionError.new
when 0
raise FluidDb::NoDataFoundError.new
when 1
return results[0]
else
raise FluidDb::TooManyRowsError.new
end
end
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#queryForResultset(sql, params = []) ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 66
def queryForResultset( sql, params=[] )
sql = self.format_to_sql( sql, params )
@connection.results_as_hash = true
results = @connection.execute(sql)
case results.length
when -1
raise FluidDb::ConnectionError.new
else
return results
end
end
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#queryForValue(sql, params = []) ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 42
def queryForValue( sql, params=[] )
sql = self.format_to_sql( sql, params )
@connection.results_as_hash = false
results = @connection.execute(sql)
case results.length
when -1
raise FluidDb::ConnectionError.new
when 0
raise FluidDb::NoDataFoundError.new
when 1
return results[0][0]
else
raise FluidDb::TooManyRowsError.new
end
end
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#Rollback ⇒ Object
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# File 'lib/FluidDb/SQLite.rb', line 123
def Rollback
@connection.rollback
end
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