public void execute()

in src/main/java/org/apache/maven/plugin/patch/ApplyMojo.java [255:316]
49 lines of code
10 McCabe index (conditional complexity)

    public void execute()
        throws MojoExecutionException, MojoFailureException
    {
        boolean patchDirEnabled = ( ( patches != null ) && !patches.isEmpty() ) || naturalOrderProcessing;
        boolean patchFileEnabled = patchFile != null;

        // if patches is null or empty, and naturalOrderProcessing is not true then disable patching
        if ( !patchFileEnabled && !patchDirEnabled )
        {
            getLog().info( "Patching is disabled for this project." );
            return;
        }

        if ( skipApplication )
        {
            getLog().info( "Skipping patch file application (per configuration)." );
            return;
        }

        patchTrackingFile.getParentFile().mkdirs();

        Map patchesToApply;

        try
        {
            if ( patchFileEnabled )
            {
                patchesToApply = Collections.singletonMap( patchFile.getName(), createPatchCommand( patchFile ) );
            }
            else
            {
                if ( !patchDirectory.isDirectory() )
                {
                    throw new FileNotFoundException( "The base directory for patch files does not exist: "
                        + patchDirectory );
                }

                String excludePatterns = null;
                if ( excludes != null )
                {
                    excludePatterns = StringUtils.join( excludes.iterator(), "," );
                    getLog().info( "Exclude pattern: " + excludePatterns );
                }

                List foundPatchFiles = FileUtils.getFileNames( patchDirectory, "*", excludePatterns, false );

                patchesToApply = findPatchesToApply( foundPatchFiles, patchDirectory );

                checkStrictPatchCompliance( foundPatchFiles );
            }

            String output = applyPatches( patchesToApply );

            checkForWatchPhrases( output );

            writeTrackingFile( patchesToApply );
        }
        catch ( IOException ioe )
        {
            throw new MojoExecutionException( "Unable to obtain list of patch files", ioe );
        }
    }