Adding Gradle Support

.gitignore

@@ -0,0 +1,5 @@
+.idea
+.gradle
+build
+target/
+.DS_Store

README.md

@@ -37,6 +37,9 @@ you import each chapter on its own project (and not as modules in a single proje
 To gain syntax highlighting you also need to install Groovy support in your IDE. This is optional
 because the build is fully automated via Maven.
 
+## Gradle Support
+There are also build.gradle files along side each maven pom.xml file in each chapter if you would like to see what an analogous gradle build file looks like. You also do not have to download and install Gradle either as the gradle wrapper files are also included in this repository. Simply type **./gradlew clean test** at the project root and Gradle will build the project and run the tests. You can also import the build.gradle files into Eclipse if you have the Gradle Buildship plugin installed. If you are using Intellij IDEA, you can also import each chapter on its own similar to how Maven projects are imported. The idea and eclipse plugins are also configured in each build.gradle file if you want to generate the metadata files for Eclipse and IDEA projects. Note that Gradle support was contributed by Mike Smithson (https://github.com/mikesmithson) and is considered a bonus feature. I will provide no support for Gradle and any releated issues, i.e., **you are on your own**.
+
 ## Code listings
 
 ### Chapter 1

chapter1/.gitignore

@@ -1,6 +1,18 @@
-.idea/
-target/
-.settings/
+# Eclipse
+.settings
 .classpath
 .project
-*.iml
+bin
+
+# IDEA
+.idea/
+*.iml
+*.ipr
+*.iws
+
+# Gradle
+.gradle
+build
+
+# Maven
+target

chapter1/build.gradle

@@ -0,0 +1,28 @@
+apply plugin: 'java'
+apply plugin: 'groovy'
+apply plugin: 'idea'
+apply plugin: 'eclipse'
+
+repositories {
+	mavenCentral()
+	jcenter()
+}
+
+
+dependencies {
+	compile 'org.codehaus.groovy:groovy-backports-compat23:2.3.7'
+    testCompile 'junit:junit:4.12'
+    testCompile 'org.spockframework:spock-core:1.0-groovy-2.4'
+    testCompile 'org.codehaus.groovy:groovy-all:2.4.7'
+    testCompile 'cglib:cglib-nodep:3.1'
+    testCompile 'org.objenesis:objenesis:2.1'
+    testCompile( 'com.athaydes:spock-reports:1.2.12' ) {
+        transitive = false
+    }
+    testCompile 'org.slf4j:slf4j-api:1.7.13'
+    testCompile 'org.slf4j:slf4j-simple:1.7.13'
+}
+
+
+sourceCompatibility = 1.7
+targetCompatibility = 1.7

chapter1/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Wed Sep 07 21:59:22 EDT 2016
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.0-bin.zip
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

chapter1/gradlew

@@ -0,0 +1,169 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+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, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$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`="\"$arg\""
+        fi
+        i=$((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
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [[ "$(uname)" == "Darwin" ]] && [[ "$HOME" == "$PWD" ]]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

chapter1/gradlew.bat

@@ -0,0 +1,84 @@
+@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 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=
+
+@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

chapter2/.gitignore

@@ -1,6 +1,18 @@
-.idea/
-target/
-.settings/
+# Eclipse
+.settings
 .classpath
 .project
-*.iml
+bin
+
+# IDEA
+.idea/
+*.iml
+*.ipr
+*.iws
+
+# Gradle
+.gradle
+build
+
+# Maven
+target

chapter2/build.gradle

@@ -0,0 +1,32 @@
+apply plugin: 'java'
+apply plugin: 'groovy'
+apply plugin: 'idea'
+apply plugin: 'eclipse'
+
+repositories {
+	mavenCentral()
+	jcenter()
+}
+
+
+dependencies {
+	compile 'org.codehaus.groovy:groovy-backports-compat23:2.3.7'
+    compile 'org.codehaus.groovy:groovy-all:2.4.7'
+    testCompile 'junit:junit:4.12'
+    testCompile 'org.spockframework:spock-core:1.0-groovy-2.4'
+    testCompile 'cglib:cglib-nodep:3.1'
+    testCompile 'org.objenesis:objenesis:2.1'
+    testCompile( 'com.athaydes:spock-reports:1.2.12' ) {
+        transitive = false
+    }
+    testCompile 'org.slf4j:slf4j-api:1.7.13'
+    testCompile 'org.slf4j:slf4j-simple:1.7.13'
+}
+
+test {
+    exclude '**/NormalAssert*'
+}
+
+
+sourceCompatibility = 1.7
+targetCompatibility = 1.7

chapter2/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Wed Sep 07 22:00:00 EDT 2016
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.0-bin.zip
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME