Add page interfaces (#67)

common-spring-jpa/build.gradle.kts

@@ -10,6 +10,7 @@ dependencies {
 
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
 
+    implementation(project(":common"))
     implementation(project(":common-spring"))
 
     implementation("org.springframework.boot:spring-boot-starter-data-jpa")

common-spring-jpa/src/main/kotlin/ru/touchin/common/spring/jpa/converters/GetPageConverter.kt

@@ -0,0 +1,12 @@
+package ru.touchin.common.spring.jpa.converters
+
+import org.springframework.data.domain.PageRequest
+import org.springframework.data.domain.Pageable
+import ru.touchin.common.page.GetPage
+
+fun GetPage.toPageable(): Pageable {
+    return PageRequest.of(
+        page - 1,
+        size,
+    )
+}

common/src/main/kotlin/ru/touchin/common/page/GetPage.kt

@@ -0,0 +1,8 @@
+package ru.touchin.common.page
+
+interface GetPage {
+
+    val page: Int
+    val size: Int
+
+}

common/src/main/kotlin/ru/touchin/common/page/PageInfo.kt

@@ -0,0 +1,8 @@
+package ru.touchin.common.page
+
+interface PageInfo {
+
+    val pageCount: Int
+    val totalItemCount: Long
+
+}