Added methods for creating and dropping a index. (#472)

Added methods for creating and dropping a index
Kotlin · Sep 28, 2017 · e388295 · e388295
1 parent c685e07
commit e388295
Showing 1 changed file with 20 additions and 0 deletions.
diff --git a/anko/library/static/sqlite/src/Database.kt b/anko/library/static/sqlite/src/Database.kt
@@ -90,6 +90,26 @@ fun SQLiteDatabase.dropTable(tableName: String, ifExists: Boolean = false) {
     execSQL("DROP TABLE $ifExistsText `$escapedTableName`;")
 }
 
+fun SQLiteDatabase.createIndex(indexName: String, tableName: String, unique: Boolean = false, ifNotExists: Boolean = false, vararg columns: String) {
+	val escapedIndexName = indexName.replace("`", "``")
+	val escapedTableName = tableName.replace("`", "``")
+	val ifNotExistsText = if (ifNotExists) "IF NOT EXISTS" else ""
+	val uniqueText = if (unique) "UNIQUE" else ""
+	execSQL(
+		columns.joinToString(
+			separator = ",",
+			prefix = "CREATE $uniqueText INDEX $ifNotExistsText `$escapedIndexName` ON `$escapedTableName`(",
+			postfix = ");"
+		)
+	)
+}
+
+fun SQLiteDatabase.dropIndex(indexName: String, ifExists: Boolean = false) {
+	val escapedIndexName = indexName.replace("`", "``")
+	val ifExistsText = if (ifExists) "IF EXISTS" else ""
+	execSQL("DROP INDEX $ifExistsText `$escapedIndexName`;")
+}
+
 private val ARG_PATTERN: Pattern = Pattern.compile("([^\\\\])\\{([^{}]+)\\}")
 
 internal fun applyArguments(whereClause: String, vararg args: Pair<String, Any>): String {