public void execute()

in src/main/java/org/apache/sling/installer/factories/deploypck/impl/DeployPckTask.java [50:122]
65 lines of code
13 McCabe index (conditional complexity)

    public void execute(final InstallationContext ctx) {
        final TaskResource tr = this.getResource();

        // get and check symbolic name
        final String symbolicName = (String)tr.getAttribute(DeploymentPackageInstaller.DEPLOYMENTPACKAGE_SYMBOLICMAME);
        if ( symbolicName == null ) {
            logger.error("Resource {} has no symbolic name - ignoring.", tr);
            this.getResourceGroup().setFinishState(ResourceState.IGNORED);
            return;
        }

        // get package if available
        final DeploymentPackage dp = this.deploymentAdmin.getDeploymentPackage(symbolicName);

        if ( tr.getState() == ResourceState.INSTALL) {
            InputStream is = null;
            try {
                is = tr.getInputStream();
                if ( is == null ) {
                    // something went wrong
                    logger.error("Resource {} does not provide an input stream!", tr);
                    this.getResourceGroup().setFinishState(ResourceState.IGNORED);
                } else {
                    final Version newVersion = new Version((String)tr.getAttribute(DeploymentPackageInstaller.DEPLOYMENTPACKAGE_VERSION));
                    // check version
                    if ( dp != null ) {
                        final int compare = dp.getVersion().compareTo(newVersion);
                        if (compare < 0) {
                            // installed version is lower -> update
                            this.deploymentAdmin.installDeploymentPackage(is);
                            ctx.log("Installed deployment package {} : {}", symbolicName, newVersion);
                            this.getResourceGroup().setFinishState(ResourceState.INSTALLED);
                        } else if (compare >= 0) {
                            logger.debug("Deployment package " + symbolicName + " " + newVersion
                                        + " is not installed, package with higher or same version is already installed.");
                        }
                    } else {
                        this.deploymentAdmin.installDeploymentPackage(is);
                        ctx.log("Installed deployment package {} : {}", symbolicName, newVersion);
                        this.getResourceGroup().setFinishState(ResourceState.INSTALLED);
                    }
                }
            } catch (final DeploymentException e) {
                logger.error("Unable to install deployment package {} from resource {}",
                        symbolicName,
                        tr);
                this.getResourceGroup().setFinishState(ResourceState.IGNORED);
            } catch (final IOException ioe) {
                logger.error("Unable to install deployment package {} from resource {}",
                        symbolicName,
                        tr);
                this.getResourceGroup().setFinishState(ResourceState.IGNORED);
            } finally {
                if ( is != null ) {
                    try {
                        is.close();
                    } catch (IOException ignore) {}
                }
            }
        } else { // uninstall
            if ( dp != null ) {
                try {
                    dp.uninstall();
                } catch (final DeploymentException e) {
                    logger.error("Unable to uninstall deployment package {} from resource {}", symbolicName, tr);
                }
            } else {
                logger.info("Unable to find deployment package with symbolic name {} for uninstalling.",
                        symbolicName);
            }
            this.getResourceGroup().setFinishState(ResourceState.UNINSTALLED);
        }
    }