Unable to access parent project library(jar) in child module - Maven

Question

I have a Project called Parent. Its type is POM. There is a library (ojdbc6.jar) that is not available in public repository so I am accessing it via <SystemPath> as you can see in below pom.xml:

<project>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.Parent</groupId>
    <artifactId>Parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <modules>
        <module>childModule</module>
    </modules>

    <dependencies>
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc</artifactId>
            <version>6</version>
            <scope>system</scope>
            <systemPath>${basedir}/lib/ojdbc6.jar</systemPath>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>in-project</id>
            <name>In Project Repo</name>
            <url>file://${basedir}/lib</url>
        </repository>
    </repositories>

Now the child project names are Child-Module1 and Child-Module2 use this (ojdbc6.jar) library It's POM is mentioned below:

<project>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>testApp</artifactId>
    <version>1.14.5.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>APP1</name>
    <description>Application</description>

    <parent>
        <groupId>com.Parent</groupId>
        <artifactId>Parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
</project>

When I build using Maven it gives me error:

Description Resource    Path    Location    Type
The container 'Maven Dependencies' references non existing library
'C:\Users\ABCCOMPUTER_NAME\.m2\repository\com\oracle\ojdbc\6\ojdbc-6.jar'
testApp Build path Problem.

Why does it looks in local repository? It happen only when parent project contains a library (jar) that contains system path. It does not happen when access system path library (jar) in same project, like parent referring ojdbc6.jar, it is fine there.

Answer 1

I resolved the issue by updating systemPath in parent pom.xml as shown below :

 <systemPath>${main.basedir}/lib/ojdbc6.jar</systemPath>

and then adding the main.basedir property in parent pom.xml and repository

<properties>
        <main.basedir>${project.basedir}</main.basedir>
    </properties>
<repositories>
        <repository>
            <id>in-project</id>
            <name>In Project Repo</name>
            <url>file://${main.basedir}/lib</url>
        </repository>
</repositories>

then adding below properties and repositories element in child module(The "/.." is added as the child module folder reside in parent folder so go up one directory then rest absolute path to parent lib folder shall be generated as expected):

  <properties>
        <main.basedir>${project.basedir}/..</main.basedir>
    </properties>
<repositories>
            <repository>
                <id>in-project</id>
                <name>In Project Repo</name>
                <url>file://${main.basedir}/lib</url>
            </repository>
    </repositories>