init with pagination

.gitignore

@@ -0,0 +1,10 @@
+.idea
+out/*
+*.iml
+target
+
+settings.xml
+
+.gradle/
+build/
+out/

build.gradle

@@ -0,0 +1,22 @@
+buildscript {
+    repositories {
+        mavenLocal()
+        jcenter()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"
+        classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:$gradle_bintray_plugin_version"
+    }
+}
+
+repositories {
+    mavenLocal()
+    jcenter()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+apply from: "./extensions.gradle"

extensions.gradle

@@ -0,0 +1,25 @@
+allprojects {
+    ext {
+        projectByName = { name ->
+            for (subproject in rootProject.subprojects) {
+                if (subproject.name == name) {
+                    return subproject
+                }
+            }
+            return null
+        }
+
+        internalProject = { name ->
+            if (releaseMode) {
+                "$group:$name:$version"
+            } else {
+                projectByName("$name")
+            }
+        }
+
+        releaseMode = (project.hasProperty('RELEASE_MODE') && project.property('RELEASE_MODE') == "true") || System.getenv('RELEASE_MODE') == "true"
+
+        mppProjectWithSerializationPresetPath = "${rootProject.projectDir.absolutePath}/mppProjectWithSerialization"
+        mppJavaProjectPresetPath = "${rootProject.projectDir.absolutePath}/mppJavaProject"
+    }
+}

gradle.properties

@@ -0,0 +1,13 @@
+kotlin.code.style=official
+org.gradle.parallel=true
+kotlin_version=1.4.10
+kotlin_coroutines_version=1.3.9
+kotlin_serialisation_core_version=1.0.0-RC
+kotlin_exposed_version=0.27.1
+
+ktor_version=1.4.0
+
+gradle_bintray_plugin_version=1.8.5
+
+group=dev.inmo
+version=0.1.0

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,104 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

mppJavaProject

@@ -0,0 +1,40 @@
+project.version = "$version"
+project.group = "$group"
+
+repositories {
+    mavenLocal()
+    jcenter()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+kotlin {
+    jvm()
+
+    sourceSets {
+        commonMain {
+            dependencies {
+                implementation kotlin('stdlib')
+
+                api internalProject("micro_utils.pagination.common")
+            }
+        }
+        commonTest {
+            dependencies {
+                implementation kotlin('test-common')
+                implementation kotlin('test-annotations-common')
+            }
+        }
+
+        jvmMain {
+            dependencies {
+                api "org.jetbrains.exposed:exposed-core:$kotlin_exposed_version"
+            }
+        }
+        jvmTest {
+            dependencies {
+                implementation kotlin('test-junit')
+            }
+        }
+    }
+}

mppProjectWithSerialization

@@ -0,0 +1,52 @@
+project.version = "$version"
+project.group = "$group"
+
+repositories {
+    jcenter()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+kotlin {
+    jvm()
+    js (BOTH) {
+        browser()
+        nodejs()
+    }
+
+    sourceSets {
+        commonMain {
+            dependencies {
+                implementation kotlin('stdlib')
+                api "org.jetbrains.kotlinx:kotlinx-serialization-core:$kotlin_serialisation_core_version"
+            }
+        }
+        commonTest {
+            dependencies {
+                implementation kotlin('test-common')
+                implementation kotlin('test-annotations-common')
+            }
+        }
+        jvmMain {
+            dependencies {
+                implementation kotlin('stdlib-jdk8')
+            }
+        }
+        jvmTest {
+            dependencies {
+                implementation kotlin('test-junit')
+            }
+        }
+        jsMain {
+            dependencies {
+                implementation kotlin('stdlib-js')
+            }
+        }
+        jsTest {
+            dependencies {
+                implementation kotlin('test-js')
+                implementation kotlin('test-junit')
+            }
+        }
+    }
+}

pagination/common/build.gradle

@@ -0,0 +1,6 @@
+plugins {
+    id "org.jetbrains.kotlin.multiplatform"
+    id "org.jetbrains.kotlin.plugin.serialization"
+}
+
+apply from: "$mppProjectWithSerializationPresetPath"

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/Pagination.kt

@@ -0,0 +1,52 @@
+package dev.inmo.micro_utils.pagination
+
+import kotlin.math.ceil
+
+/**
+ * Base interface of pagination
+ *
+ * If you want to request something, you should use [SimplePagination]. If you need to return some result including
+ * pagination - [PaginationResult]
+ */
+interface Pagination {
+    /**
+     * Started with 0.
+     * Number of page inside of pagination. Offset can be calculated as [page] * [size]
+     */
+    val page: Int
+    /**
+     * Can be 0, but can't be < 0
+     * Size of current page. Offset can be calculated as [page] * [size]
+     */
+    val size: Int
+}
+
+/**
+ * First number in index of objects. It can be used as offset for databases or other data sources
+ */
+val Pagination.firstIndex: Int
+    get() = page * size
+
+/**
+ * Last number in index of objects. In fact, one [Pagination] object represent data in next range:
+ *
+ * [[firstIndex], [lastIndex]]; That means, that for [Pagination] with [Pagination.size] == 10 and [Pagination.page] == 1
+ * you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19.
+ */
+val Pagination.lastIndex: Int
+    get() = firstIndex + size - 1
+
+/**
+ * Calculates pages count for given [datasetSize]
+ */
+fun calculatePagesNumber(datasetSize: Long, pageSize: Int): Int {
+    return ceil(datasetSize.toDouble() / pageSize).toInt()
+}
+/**
+ * Calculates pages count for given [datasetSize]
+ */
+fun calculatePagesNumber(datasetSize: Int, pageSize: Int): Int =
+    calculatePagesNumber(
+        datasetSize.toLong(),
+        pageSize
+    )

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/PaginationResult.kt

@@ -0,0 +1,28 @@
+package dev.inmo.micro_utils.pagination
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class PaginationResult<T>(
+    override val page: Int,
+    val pagesNumber: Int,
+    val results: List<T>,
+    override val size: Int
+) : Pagination
+
+fun <T> List<T>.createPaginationResult(
+    pagination: Pagination,
+    commonObjectsNumber: Long
+) = PaginationResult(
+    pagination.page,
+    calculatePagesNumber(
+        commonObjectsNumber,
+        pagination.size
+    ),
+    this,
+    pagination.size
+)
+
+fun <T> Pair<Long, List<T>>.createPaginationResult(
+    pagination: Pagination
+) = second.createPaginationResult(pagination, first)

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/SimplePagination.kt

@@ -0,0 +1,33 @@
+package dev.inmo.micro_utils.pagination
+
+import kotlinx.serialization.Serializable
+
+const val defaultSmallPageSize = 2
+const val defaultMediumPageSize = 5
+const val defaultLargePageSize = 10
+const val defaultExtraLargePageSize = 15
+
+@Suppress("NOTHING_TO_INLINE", "FunctionName")
+inline fun FirstPagePagination(size: Int = defaultMediumPageSize) =
+    SimplePagination(
+        page = 0,
+        size = size
+    )
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun Pagination.nextPage() =
+    SimplePagination(
+        page + 1,
+        size
+    )
+
+@Serializable
+data class SimplePagination(
+    override val page: Int,
+    override val size: Int
+) : Pagination
+
+fun Pagination(
+    page: Int,
+    size: Int
+) = SimplePagination(page, size)

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/WalkPagination.kt

@@ -0,0 +1,28 @@
+package dev.inmo.micro_utils.pagination
+
+inline fun doWithPagination(
+    startPagination: Pagination = FirstPagePagination(),
+    requestMaker: (pagination: Pagination) -> Pagination?
+) = requestMaker(startPagination).let {
+    var pagination = it
+    while (pagination != null) {
+        pagination = requestMaker(pagination)
+    }
+}
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun PaginationResult<*>.nextPageIfNotEmpty() = if (results.isNotEmpty()) {
+    SimplePagination(
+        page + 1,
+        size
+    )
+} else {
+    null
+}
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun PaginationResult<*>.thisPageIfNotEmpty(): Pagination? = if (results.isNotEmpty()) {
+    this
+} else {
+    null
+}

pagination/exposed/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+    id "org.jetbrains.kotlin.multiplatform"
+    id "org.jetbrains.kotlin.plugin.serialization"
+}
+
+apply from: "$mppJavaProjectPresetPath"
+
+kotlin {
+    sourceSets {
+        commonMain {
+            dependencies {
+                api internalProject("micro_utils.pagination.common")
+            }
+        }
+    }
+}

pagination/exposed/src/jvmMain/kotlin/dev/inmo/micro_utils/pagination/QueryExtensions.kt

@@ -0,0 +1,27 @@
+package dev.inmo.micro_utils.pagination
+
+import org.jetbrains.exposed.sql.*
+
+fun Query.paginate(with: Pagination, orderBy: Pair<Expression<*>, SortOrder>? = null) = limit(
+    with.size,
+    (if (orderBy ?.second == SortOrder.DESC) {
+        with.lastIndex
+    } else {
+        with.firstIndex
+    }).toLong()
+).let {
+    if (orderBy != null) {
+        it.orderBy(
+            orderBy.first,
+            orderBy.second
+        )
+    } else {
+        it
+    }
+}
+
+fun Query.paginate(with: Pagination, orderBy: Expression<*>?, reversed: Boolean = false) = paginate(
+    with,
+    orderBy ?.let { it to if (reversed) SortOrder.DESC else SortOrder.ASC }
+)
+

pagination/ktor/common/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+    id "org.jetbrains.kotlin.multiplatform"
+    id "org.jetbrains.kotlin.plugin.serialization"
+}
+
+apply from: "$mppProjectWithSerializationPresetPath"
+
+kotlin {
+    sourceSets {
+        commonMain {
+            dependencies {
+                api internalProject("micro_utils.pagination.common")
+            }
+        }
+    }
+}

pagination/ktor/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/PaginationInUrl.kt

@@ -0,0 +1,23 @@
+package dev.inmo.micro_utils.pagination
+
+const val paginationPageKey = "ppage"
+const val paginationSizeKey = "psize"
+
+val Pagination.asUrlQueryParts
+    get() = mapOf(
+        paginationPageKey to page.toString(),
+        paginationSizeKey to size.toString()
+    )
+
+val Pagination.asUrlQueryArrayParts
+    get() = arrayOf(
+        paginationPageKey to page.toString(),
+        paginationSizeKey to size.toString()
+    )
+
+val Map<String, String?>.extractPagination: Pagination
+    get() = SimplePagination(
+        get(paginationPageKey) ?.toIntOrNull() ?: 0,
+        get(paginationSizeKey) ?.toIntOrNull() ?: defaultMediumPageSize
+    )
+

pagination/ktor/server/build.gradle

@@ -0,0 +1,23 @@
+plugins {
+    id "org.jetbrains.kotlin.multiplatform"
+    id "org.jetbrains.kotlin.plugin.serialization"
+}
+
+apply from: "$mppJavaProjectPresetPath"
+
+kotlin {
+    sourceSets {
+        commonMain {
+            dependencies {
+                api internalProject("micro_utils.pagination.ktor.common")
+            }
+        }
+
+        jvmMain {
+            dependencies {
+                api "io.ktor:ktor-server:$ktor_version"
+                api "io.ktor:ktor-server-host-common:$ktor_version"
+            }
+        }
+    }
+}

pagination/ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/pagination/ServerPaginationHelpers.kt

@@ -0,0 +1,14 @@
+package dev.inmo.micro_utils.pagination
+
+import io.ktor.application.ApplicationCall
+import io.ktor.http.Parameters
+
+val Parameters.extractPagination: Pagination
+    get() = SimplePagination(
+        get("page") ?.toIntOrNull() ?: 0,
+        get("size") ?.toIntOrNull() ?: defaultMediumPageSize
+    )
+
+val ApplicationCall.extractPagination: Pagination
+    get() = request.queryParameters.extractPagination
+

settings.gradle

@@ -0,0 +1,15 @@
+rootProject.name='micro_utils'
+
+String[] includes = [
+    ":pagination:common",
+    ":pagination:exposed",
+    ":pagination:ktor:common",
+    ":pagination:ktor:server",
+]
+
+
+includes.each {
+    include it
+    ProjectDescriptor project = project(it)
+    project.name = rootProject.name + project.projectDir.absolutePath.replace("${rootDir.absolutePath}", "").replace(File.separator, ".")
+}