Git 合并/拉取后使用 Maven 进行部分全新安装

Question

使用终端，是否可以清理和安装 POM 项目中在 git merge/pull 之后发生更改的项目，换句话说，自上次全新安装以来的更改？

编辑

感谢 VonC 的回答，我已经完成了一个符合我要求的脚本。详情见我的回答。

Answer 1

既然可以detect the list of pom.xml changes between two commits:

git diff --name-status <commit1> <commit2>

（另见“Detail change after Git pull”）

，您可以编写一个脚本，为每个模块执行一个mvn clean install。

Answer 2

感谢 VonC 的 answer，我完成了一个符合我要求的脚本。

该项目是一个 POM 项目，其中包含包含应用程序主要项目的子 POM 项目。通过让当前工作分支调用git diff --name-status HEAD@{1} <current_branch>，我达到了预期的结果。

这得到了项目中已更改文件的列表，然后我将其拆分为一个数组。不幸的是，我无法让拆分正常工作，因此数组被组织为更改类型，后跟文件路径。

然后我检查了字符串大小，跳过了单个字符串。下一步是将字符串拆分为一个数组，由/ 分隔。如果根路径检查它是否存在于数组中，如果不存在则添加。

最后，遍历根路径数组并执行 maven 调用。

################################################################################
#
# License:.....GNU General Public License v3.0
# Author:......CodeMonkey
# Date:........14 November 2018
# Title:.......GitMavenCleanInstall.sh
# Description: This script is designed to cd to a set Maven POM Project,
#   perform a git remote update and pull, and clean install the changed
#   files projects.
# Notice:......The project structure this script was originally set to target
#   is structured as a Maven POM Project that contains several sub-POM Projects.
#   The sub-POM Projects contain Maven Java Application projects. The targets
#   should be easy to change, and allow for others to target other structures.
#
################################################################################
#
# Change History: N/A
#
################################################################################

#!/bin/bash
#Function to check if array has element
containsElement () {
    local e match="$1"
    shift
    for e; do [[ "$e" == "$match" ]] && return 0; done
    return 1
}

#Navigate to the POM Project
cd PATH/TO/POM/PROJECT
#Remote update
git remote update -p
#Pull
git pull

#Get the current working branch
CURRENT_BRANCH="$(git branch | sed -n -e 's/^\* \(.*\)/\1/p')"
#Get the output of the command git diff
GIT_DIFF_OUTPUT="$(git diff --name-status HEAD@{1} ${CURRENT_BRANCH})"

#Split the diff output into an array
read =a GIT_DIFF_OUTPUT_ARY <<< $GIT_DIF_OUTPUT
#Declare empty array for root path
declare -a GIT_DIFF_OUTPUT_ARY_ROOT_PATH=()
FORWARD='/'
#Loop diff output array
for i in "$GIT_DIFF_OUTPUT_ARY[@]}"
do
    #Check that the string is not 1 Character
    if [[ "$(echo -n $1 | wc -m)" != 1 ]]
    then
        #Split the file path by /
        IFS='/' read -ra SPLIT <<< $i
        #Concatenate first path + / + second path
        path=${SPLIT[0]}$FORWARD${SPLIT[1]}
        #Call function to see if it already exists in the root path array
        containsElement "$path" "${GIT_DIFF_OUTPUT_ARY_ROOT_PATH[@]}"
        if [[ $? != 0 ]]
        then
            #Add the path since it was not found
            GIT_DIFF_OUTPUT_ARY_ROOT_PATH+=($path)
        fi
    fi
done

#Loop root path array
for val in ${GIT_DIFF_OUTPUT_ARY_ROOT_PATH[@]}
do
    #CD into root path
    cd $val
    #Maven call to clean install
    mvn -DskipTests=true --errors -T 8 -e clean install
    #CD back up before next project
    cd ../../
done