indexColumn
目的 Purpose
Customizes the index column definition of an indexed collection such as a List or Map使用例 Examples
class Neo { static hasMany = [matrix: Integer] static mapping = {
matrix indexColumn: [name: "the_matrix", type: Integer]
}
}def neo = new Neo() neo.matrix = [(1): 30, (2): 42, (3): 23] neo.save(flush: true)
詳細 Description
Usage:
使用方法: association_name(indexColumn:map)Usage:
association_name(indexColumn:map)引数: Arguments:
name- The name of the column as a Stringtype(optional) - The Hibernate type.sqlType(optional) - The underlying SQL typeenumType(optional) - The enum type in for type-safe Enum properties. Eitherordinalorstring.index(optional) - The index nameunique(optional) - Whether it is uniquelength(optional) - The length of the columnprecision(optional) - The precision of the columnscale(optional) - The scale of the column
Map or List the index is stored in a column called association_name_idx which is an integer type in the case of lists and a String in the case of maps. You can alter how the index column is mapped using the indexColumn argument:static mapping = { matrix indexColumn: [name: "the_matrix", type: Integer] }