[CALCITE-2112] Add Maven wrapper for Calcite (Ratandeep S. Ratti)

Update doc, remove maven jar; add jar to .gitignore (Julian Hyde)

Use TLS 1.2 on windows (Sergey Nuyanzin)


Project: http://git-wip-us.apache.org/repos/asf/calcite/repo
Commit: http://git-wip-us.apache.org/repos/asf/calcite/commit/8f43b3b8
Tree: http://git-wip-us.apache.org/repos/asf/calcite/tree/8f43b3b8
Diff: http://git-wip-us.apache.org/repos/asf/calcite/diff/8f43b3b8

Branch: refs/heads/master
Commit: 8f43b3b8a592792e51feb75f2371582eb5013a70
Parents: c6ad15e
Author: Ratandeep S. Ratti <[email protected]>
Authored: Wed Dec 27 21:19:53 2017 -0800
Committer: Julian Hyde <[email protected]>
Committed: Sun Sep 9 13:27:10 2018 -0700

----------------------------------------------------------------------
 .gitignore                            |   2 +
 .mvn/wrapper/maven-wrapper.properties |   1 +
 mvnw                                  | 286 +++++++++++++++++++++++++++++
 mvnw.cmd                              | 161 ++++++++++++++++
 site/_docs/howto.md                   |  51 ++---
 site/_docs/tutorial.md                |   4 +-
 6 files changed, 480 insertions(+), 25 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/calcite/blob/8f43b3b8/.gitignore
----------------------------------------------------------------------
diff --git a/.gitignore b/.gitignore
index 583653d..65e3686 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,4 +32,6 @@ settings.xml
 nb-configuration.xml
 */nb-configuration.xml
 
+.mvn/wrapper/maven-wrapper.jar
+
 # End .gitignore

http://git-wip-us.apache.org/repos/asf/calcite/blob/8f43b3b8/.mvn/wrapper/maven-wrapper.properties
----------------------------------------------------------------------
diff --git a/.mvn/wrapper/maven-wrapper.properties 
b/.mvn/wrapper/maven-wrapper.properties
new file mode 100755
index 0000000..7179346
--- /dev/null
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip

http://git-wip-us.apache.org/repos/asf/calcite/blob/8f43b3b8/mvnw
----------------------------------------------------------------------
diff --git a/mvnw b/mvnw
new file mode 100755
index 0000000..5551fde
--- /dev/null
+++ b/mvnw
@@ -0,0 +1,286 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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
+#
+#    http://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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven2 Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug 
-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to 
/Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  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"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+  # TODO classpath?
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ 
]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  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
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from 
Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in 
binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    
jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar";
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        wget "$jarUrl" -O "$wrapperJarPath"
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        curl -o "$wrapperJarPath" "$jarUrl"
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; 
then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; 
then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader 
"$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") 
$MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" 
"-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

http://git-wip-us.apache.org/repos/asf/calcite/blob/8f43b3b8/mvnw.cmd
----------------------------------------------------------------------
diff --git a/mvnw.cmd b/mvnw.cmd
new file mode 100755
index 0000000..42f5515
--- /dev/null
+++ b/mvnw.cmd
@@ -0,0 +1,161 @@
+@REM 
----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM 
----------------------------------------------------------------------------
+
+@REM 
----------------------------------------------------------------------------
+@REM Maven2 Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug 
-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM 
----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd 
ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another 
setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder 
".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto 
endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do 
set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set 
DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar";
+FOR /F "tokens=1,2 delims==" %%A IN 
(%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties) DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from 
Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in 
binary data.
+if exist %WRAPPER_JAR% (
+    echo Found %WRAPPER_JAR%
+) else (
+    echo Couldn't find %WRAPPER_JAR%, downloading it ...
+    echo Downloading from: %DOWNLOAD_URL%
+    powershell -Command "[Net.ServicePointManager]::SecurityProtocol = 
[Net.SecurityProtocolType]::Tls12; (New-Object 
Net.WebClient).DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"
+    echo Finished downloading %WRAPPER_JAR%
+)
+@REM End of extension
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% 
-classpath %WRAPPER_JAR% 
"-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% 
%MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd 
ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

http://git-wip-us.apache.org/repos/asf/calcite/blob/8f43b3b8/site/_docs/howto.md
----------------------------------------------------------------------
diff --git a/site/_docs/howto.md b/site/_docs/howto.md
index e9be521..f52abb3 100644
--- a/site/_docs/howto.md
+++ b/site/_docs/howto.md
@@ -31,17 +31,16 @@ adapters.
 
 ## Building from a source distribution
 
-Prerequisites are maven (3.5.2 or later)
-and Java (JDK 8, 9 or 10) on your path.
+Prerequisite is Java (JDK 8, 9 or 10) on your path.
 
 Unpack the source distribution `.tar.gz` file,
 `cd` to the root directory of the unpacked source,
-then build using maven:
+then build using the included maven wrapper:
 
 {% highlight bash %}
 $ tar xvfz calcite-1.17.0-source.tar.gz
 $ cd calcite-1.17.0
-$ mvn install
+$ ./mvnw install
 {% endhighlight %}
 
 [Running tests](#running-tests) describes how to run more or fewer
@@ -49,17 +48,17 @@ tests.
 
 ## Building from git
 
-Prerequisites are git, maven (3.5.2 or later)
-and Java (JDK 8 or later, 9 preferred) on your path.
+Prerequisites are git
+and Java (JDK 8, 9 or 10) on your path.
 
 Create a local copy of the github repository,
 `cd` to its root directory,
-then build using maven:
+then build using the included maven wrapper:
 
 {% highlight bash %}
 $ git clone git://github.com/apache/calcite.git
 $ cd calcite
-$ mvn install
+$ ./mvnw install
 {% endhighlight %}
 
 Calcite includes a number of machine-generated codes. By default, these are
@@ -81,14 +80,20 @@ $ mvn package -DskipGenerate
 [Running tests](#running-tests) describes how to run more or fewer
 tests.
 
+## If you already have Apache Maven
+
+If you have already installed Maven and it is on your path, then you
+can use `mvn` rather than `./mvnw` in commands. You need Maven version
+3.5.2 or later.
+
 ## Running tests
 
 The test suite will run by default when you build, unless you specify
 `-DskipTests`:
 
 {% highlight bash %}
-$ mvn -DskipTests clean install
-$ mvn test
+$ ./mvnw -DskipTests clean install
+$ ./mvnw test
 {% endhighlight %}
 
 There are other options that control which tests are run, and in what
@@ -205,7 +210,7 @@ For example, navigate to the method `JdbcTest.testWinAgg` 
with
 
 If you encounter an error while running the `JdbcTest.testWinAgg` , run the 
following Maven command from the command line:
 
-`$ mvn -DskipTests clean install`
+`$ ./mvnw -DskipTests clean install`
 
 You should see `"BUILD SUCCESS"`.
 
@@ -490,9 +495,9 @@ read -s GPG_PASSPHRASE
 
 # Make sure that there are no junk files in the sandbox
 git clean -xn
-mvn clean
+./mvnw clean
 
-mvn -Papache-release -Dgpg.passphrase=${GPG_PASSPHRASE} install
+./mvnw -Papache-release -Dgpg.passphrase=${GPG_PASSPHRASE} install
 {% endhighlight %}
 
 When the dry-run has succeeded, change `install` to `deploy`.
@@ -507,13 +512,13 @@ Before you start:
 * Check that `NOTICE` has the current copyright year.
 * Set `version.major` and `version.minor` in `pom.xml`.
 * Make sure build and tests succeed, including with `-P it,it-oracle`.
-* Make sure that `mvn javadoc:javadoc javadoc:test-javadoc` succeeds
+* Make sure that `./mvnw javadoc:javadoc javadoc:test-javadoc` succeeds
   (i.e. gives no errors; warnings are OK)
 * Generate a report of vulnerabilities that occur among dependencies,
   using `-Ppedantic`; if you like, run again with `-DfailBuildOnCVSS=8` to see
   whether serious vulnerabilities exist. Report to 
[[email protected]](mailto:[email protected])
   if new critical vulnerabilities are found among dependencies.
-* Make sure that `mvn apache-rat:check` succeeds. (It will be run as part of
+* Make sure that `./mvnw apache-rat:check` succeeds. (It will be run as part of
   the release, but it's better to trouble-shoot early.)
 * Decide the supported configurations of JDK, operating system and
   Guava.  These will probably be the same as those described in the
@@ -581,16 +586,16 @@ read -s GPG_PASSPHRASE
 
 # Make sure that there are no junk files in the sandbox
 git clean -xn
-mvn clean
+./mvnw clean
 
 # Do a dry run of the release:prepare step, which sets version numbers
 # (accept the default tag name of calcite-X.Y.Z)
 # Note X.Y.Z is the current version we're trying to release, and X.Y+1.Z is 
the next development version.
 # For example, if I am currently building a release for 1.16.0, X.Y.Z would be 
1.16.0 and X.Y+1.Z would be 1.17.0.
-mvn -DdryRun=true -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE}" release:prepare 2>&1 | tee 
/tmp/prepare-dry.log
+./mvnw -DdryRun=true -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE}" release:prepare 2>&1 | tee 
/tmp/prepare-dry.log
 
 # If you have multiple GPG keys, you can select the key used to sign the 
release by adding `-Dgpg.keyname=${GPG_KEY_ID}` to `-Darguments`:
-mvn -DdryRun=true -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE} -Dgpg.keyname=${GPG_KEY_ID}" 
release:prepare 2>&1 | tee /tmp/prepare-dry.log
+./mvnw -DdryRun=true -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE} -Dgpg.keyname=${GPG_KEY_ID}" 
release:prepare 2>&1 | tee /tmp/prepare-dry.log
 {% endhighlight %}
 
 Check the artifacts.
@@ -627,13 +632,13 @@ For this step you'll have to add the [Apache 
servers](https://maven.apache.org/d
 # Prepare sets the version numbers, creates a tag, and pushes it to git
 # Note X.Y.Z is the current version we're trying to release, and X.Y+1.Z is 
the next development version.
 # For example, if I am currently building a release for 1.16.0, X.Y.Z would be 
1.16.0 and X.Y+1.Z would be 1.17.0.
-mvn -DdryRun=false -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE}" release:prepare 2>&1 | tee 
/tmp/prepare.log
+./mvnw -DdryRun=false -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE}" release:prepare 2>&1 | tee 
/tmp/prepare.log
 
 # If you have multiple GPG keys, you can select the key used to sign the 
release by adding `-Dgpg.keyname=${GPG_KEY_ID}` to `-Darguments`:
-mvn -DdryRun=false -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE} -Dgpg.keyname=${GPG_KEY_ID}" 
release:prepare 2>&1 | tee /tmp/prepare-dry.log
+./mvnw -DdryRun=false -DskipTests -DreleaseVersion=X.Y.Z 
-DdevelopmentVersion=X.Y+1.Z-SNAPSHOT -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE} -Dgpg.keyname=${GPG_KEY_ID}" 
release:prepare 2>&1 | tee /tmp/prepare-dry.log
 
 # Perform checks out the tagged version, builds, and deploys to the staging 
repository
-mvn -DskipTests -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE}" release:perform 2>&1 | tee 
/tmp/perform.log
+./mvnw -DskipTests -Papache-release 
-Darguments="-Dgpg.passphrase=${GPG_PASSPHRASE}" release:perform 2>&1 | tee 
/tmp/perform.log
 {% endhighlight %}
 
 Verify the staged artifacts in the Nexus repository:
@@ -679,7 +684,7 @@ git tag -d calcite-X.Y.Z
 git push origin :refs/tags/calcite-X.Y.Z
 
 # Remove modified files
-mvn release:clean
+./mvnw release:clean
 
 # Check whether there are modified files and if so, go back to the
 # original git commit
@@ -871,7 +876,7 @@ Make sure to add the version number and date of the latest 
release at the site l
 
 Add a release note by copying
 [site/_posts/2016-10-12-release-1.10.0.md]({{ site.sourceRoot 
}}/site/_posts/2016-10-12-release-1.10.0.md),
-generate the javadoc using `mvn site`, [publish the 
site](#publish-the-web-site),
+generate the javadoc using `./mvnw site`, [publish the 
site](#publish-the-web-site),
 and check that it appears in the contents in 
[news](http://localhost:4000/news/).
 
 Merge the release branch back into `master` (e.g. `git merge --ff-only 
branch-X.Y`).

http://git-wip-us.apache.org/repos/asf/calcite/blob/8f43b3b8/site/_docs/tutorial.md
----------------------------------------------------------------------
diff --git a/site/_docs/tutorial.md b/site/_docs/tutorial.md
index 9f163af..182bbc5 100644
--- a/site/_docs/tutorial.md
+++ b/site/_docs/tutorial.md
@@ -53,12 +53,12 @@ several important concepts:
 
 ## Download and build
 
-You need Java (1.7 or higher; 1.8 preferred), git and maven (3.2.1 or later).
+You need Java (version 8, 9 or 10) and git.
 
 {% highlight bash %}
 $ git clone https://github.com/apache/calcite.git
 $ cd calcite
-$ mvn install -DskipTests -Dcheckstyle.skip=true
+$ ./mvnw install -DskipTests -Dcheckstyle.skip=true
 $ cd example/csv
 {% endhighlight %}
 

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