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Versions: 15
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Contents
module RR
# Provides functionality to cast a query result value into the correct ruby type.
# Requires originating table and column to be known.
class TypeCastingCursor
# Delegate the uninteresting methods to the original cursor
def next?; org_cursor.next? end
def clear; org_cursor.clear end
# The original cursor object
attr_accessor :org_cursor
# A column_name => Column cache
attr_accessor :columns
# Creates a new TypeCastingCursor based on provided database connection and table name
# for the provided database query cursor
def initialize(connection, table, cursor)
self.org_cursor = cursor
self.columns = {}
connection.columns(table).each {|c| columns[c.name] = c}
end
# Reads the next row from the original cursor and returns the row with the type casted row values.
def next_row
row = org_cursor.next_row
row.each {|column, value| row[column] = columns[column].type_cast value}
row
end
end
end
Version data entries
15 entries across 15 versions & 2 rubygems