feature add exec method

src/main/kotlin/fr/postgresjson/connexion/Connection.kt

@@ -1,11 +1,13 @@
 package fr.postgresjson.connexion
 
 import com.fasterxml.jackson.core.type.TypeReference
+import com.github.jasync.sql.db.QueryResult
 import com.github.jasync.sql.db.pool.ConnectionPool
 import com.github.jasync.sql.db.postgresql.PostgreSQLConnection
 import com.github.jasync.sql.db.postgresql.PostgreSQLConnectionBuilder
 import fr.postgresjson.Serializer
 import fr.postgresjson.entity.EntityI
+import java.util.concurrent.CompletableFuture
 
 class Connection(
     private val database: String,
@@ -50,6 +52,10 @@ class Connection(
 
     inline fun <T, reified R : List<EntityI<T?>?>> select(sql: String, values: List<Any?> = emptyList()): R = select(sql, object : TypeReference<R>() {}, values)
 
+    fun exec(sql: String, values: List<Any?> = emptyList()): CompletableFuture<QueryResult> {
+        return connect().sendPreparedStatement(sql, compileArgs(values))
+    }
+
     private fun compileArgs(values: List<Any?>): List<Any?> {
         return values.map {
             if (it is EntityI<*>) {

src/test/kotlin/fr/postgresjson/ConnectionTest.kt

@@ -1,5 +1,6 @@
 package fr.postgresjson
 
+import com.github.jasync.sql.db.util.isCompleted
 import fr.postgresjson.connexion.Connection
 import fr.postgresjson.entity.IdEntity
 import org.junit.jupiter.api.Assertions.*
@@ -63,4 +64,12 @@ class ConnectionTest(): TestAbstract() {
         assertTrue(obj!!.id == 1)
         assertTrue(obj.name == "myName")
     }
+
+    @Test
+    fun callExec() {
+        val o = ObjTest("myName")
+        val future = connection.exec("select json_build_object('id', 1, 'name', ?::json->>'name')", listOf(o))
+        future.join()
+        assertTrue(future.isCompleted)
+    }
 }