Failed to execute goal com.smoope.utils:j2objc-maven-plugin

[cyberneid]

I set the maven plugin as described in the readme.
But when I call mvn j2objc:convert I got the following error:

[ERROR] Failed to execute goal com.smoope.utils:j2objc-maven-plugin:1.1.5-SNAPSHOT:convert (default-cli) on project openpdf: Unable to parse configuration of mojo com.smoope.utils:j2objc-maven-plugin:1.1.5-SNAPSHOT:convert for parameter optional: Cannot find 'optional' in class com.smoope.utils.Dependency -> [Help 1]
[ERROR]

If I run mvn with -e option I got:

org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException: No plugin found for prefix 'j2objc' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/Users/ugochirico/.m2/repository), sonatype-nexus-snapshots (https://oss.sonatype.org/content/repositories/snapshots), central (https://repo.maven.apache.org/maven2)]

How can I fix that?

[vicmosin]

1. Which jdk are you running on?
2. Share the configuration from pom file

[cyberneid]

I'm using Java SE 1.8.0_311
This is the pom

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.github.librepdf</groupId>
        <artifactId>openpdf-parent</artifactId>
        <version>1.3.28-SNAPSHOT</version>
    </parent>
    <artifactId>openpdf</artifactId>
    <properties>
        <java-module-name>com.github.librepdf.openpdf</java-module-name>
    </properties>
<pluginRepositories>
    <pluginRepository>
        <id>sonatype-nexus-snapshots</id>
        <name>sonatype-nexus-snapshots</name>
        <url>https://oss.sonatype.org/content/repositories/snapshots</url>
    </pluginRepository>
</pluginRepositories>
    <dependencies>
        <dependency>
            <groupId>com.google.code.findbugs</groupId>
            <artifactId>jsr305</artifactId>
        </dependency>
        <dependency>
            <groupId>org.bouncycastle</groupId>
            <artifactId>bcprov-jdk15on</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.bouncycastle</groupId>
            <artifactId>bcpkix-jdk15on</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.apache.xmlgraphics</groupId>
            <artifactId>fop</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
            <resource>
                <directory>src/main/resources-filtered</directory>
                <filtering>true</filtering>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <configuration>
                    <!-- unpack bundle, so humans can see the manifest without unpacking the jar -->
                    <unpackBundle>true</unpackBundle>
                    <instructions>
                        <!-- All com.lowagie.text.* packages are 'public' -->
                        <Export-Package>com.lowagie.text.*;version="${project.version}"</Export-Package>
                        <!-- Declare the Bouncycastle dependencies as optional -->
                        <Import-Package>org.bouncycastle.*;resolution:=optional,!com.lowagie.*,*</Import-Package>
                    </instructions>
                </configuration>
            </plugin>
            
            <plugin>
		<groupId>com.smoope.utils</groupId>
    			<artifactId>j2objc-maven-plugin</artifactId>
    			<version>1.0.1-SNAPSHOT</version>
			    <configuration>
			        <j2objcPath>/Users/ugochirico/Library/j2objc-2.8</j2objcPath>
			        <useArc>true</useArc>
        			<noPackageDirectories>true</noPackageDirectories>
        			<skipParent>true</skipParent>
        			<failOnErrors>false</failOnErrors>
        			<dependenciesOnly>true</dependenciesOnly> 
        			<dependencies>
        				<dependency>
				            <groupId>com.google.code.findbugs</groupId>
				            <artifactId>jsr305</artifactId>
				        </dependency>
				        <dependency>
				            <groupId>org.bouncycastle</groupId>
				            <artifactId>bcprov-jdk15on</artifactId>
				            <optional>true</optional>
				        </dependency>
				        <dependency>
				            <groupId>org.bouncycastle</groupId>
				            <artifactId>bcpkix-jdk15on</artifactId>
				            <optional>true</optional>
				        </dependency>
				        <dependency>
				            <groupId>org.apache.xmlgraphics</groupId>
				            <artifactId>fop</artifactId>
				            <optional>true</optional>
				        </dependency>
        			</dependencies>			    
        		</configuration>
		</plugin>
        </plugins>
    </build>
</project>

[vicmosin]

Could you try the latest snapshot version? It's 1.1.5-SNAPSHOT I guess. Or release 1.1.4

[cyberneid]

Yes, I tried with the latest snapshot 1.1.5 and I got that error

[vicmosin]

I am not sure what's the reason currently, will investigate it later, once I have more time. But I think the issue is <optional>true</optional> in dependencies section of the plugin's configuration. Could you try to remove them and put actual versions (if needed) and try again?

[cyberneid]

By removing the <optional>true</optional> I was able to go ahead.
Now I have another issue related to the source of the dependencies:

Build error - IO error: /Users/ugochirico/.m2/repository/org/bouncycastle/bcprov-jdk15on/bcprov-jdk15on--sources.jar (No such file or directory)

But I set this one to download the sources:

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-repository-plugin</artifactId>
                <version>${maven-repository-plugin.version}</version>
                <configuration>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>true</downloadJavadocs>
                </configuration>
</plugin>

What else should I do?

[vicmosin]

I guess plugin knows nothing about bcprov-jdk15on dependency (because you removed it), so maybe try to bring them back, but instead of marking them optional - set specific versions?
i.e.

<configuration>
	 <j2objcPath>/Users/ugochirico/Library/j2objc-2.8</j2objcPath>
	<useArc>true</useArc>
        <noPackageDirectories>true</noPackageDirectories>
        <skipParent>true</skipParent>
        <failOnErrors>false</failOnErrors>
        <dependenciesOnly>true</dependenciesOnly> 
        <dependencies>
		<dependency>
			<groupId>org.bouncycastle</groupId>
		        <artifactId>bcprov-jdk15on</artifactId>
			<version>x.y.z</version>
		</dependency>
                 ....

[GIovaB6]

Thanks @vicmosin ,I've tried to set specific version for all dependency and i was able to go ahead.
But i have an error about opening a zip file.
I don't have information about wich file i can't able to open, do you have any suggestions?

this is my error
`
[ERROR] Failed to execute goal com.smoope.utils:j2objc-maven-plugin:1.1.4:convert (default-cli) on project openpdf: Build error - IO error: error in opening zip file -> [Help 1]

It happens when j2objc try to convert this dependency
<groupId>org.apache.xmlgraphics</groupId> <artifactId>fop</artifactId> <version>2.7</version>

[vicmosin]

@GIovaB6 sorry for delay. Apparently something wrong with dependency, does it work if you remove it?