Created
July 23, 2014 13:03
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| package utils.anorm | |
| import anorm.ParameterValue | |
| import anorm.SQL | |
| /** | |
| * @see Copy from http://nineofclouds.blogspot.fr/2013/04/in-clause-with-anorm.html | |
| * @param query | |
| * @param parameterValues | |
| */ | |
| class RichSQL(val query: String, val parameterValues: (Any, ParameterValue[Any])*) { | |
| /** | |
| * Convert this object into an anorm.SqlQuery | |
| */ | |
| def toSQL = SQL(query).on(parameterValues: _*) | |
| /** | |
| * Similar to anorm.SimpleSql.on, but takes lists instead of single values. | |
| * Each list is converted into a set of values, and then passed to anorm's | |
| * on function when toSQL is called. | |
| */ | |
| def onList[A](args: (String, Iterable[A])*)(implicit toParameterValue: (A) => ParameterValue[A]) = { | |
| val condensed = args.map { | |
| case (name, values) => | |
| val search = "{" + name + "}" | |
| val valueNames = values.zipWithIndex.map { | |
| case (value, index) => name + "_" + index | |
| } | |
| val placeholders = valueNames.map { | |
| name => "{" + name + "}" | |
| } | |
| val replace = placeholders.mkString(",") | |
| val converted = values.map { | |
| value => toParameterValue(value).asInstanceOf[ParameterValue[Any]] | |
| } | |
| val parameters = valueNames.zip(converted) | |
| (search, replace, parameters) | |
| } | |
| val newQuery = condensed.foldLeft(query) { | |
| case (newQuery, (search, replace, _)) => | |
| newQuery.replace(search, replace) | |
| } | |
| val newValues = parameterValues ++ condensed.map { | |
| case (_, _, parameters) => parameters | |
| }.flatten | |
| new RichSQL(newQuery, newValues: _*) | |
| } | |
| } | |
| object RichSQL { | |
| def apply[A](query: String) = new RichSQL(query) | |
| } |
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