static void mergeExtensions()

in src/main/java/org/apache/sling/feature/builder/BuilderUtil.java [655:714]
51 lines of code
14 McCabe index (conditional complexity)

    static void mergeExtensions(final Feature target,
            final Feature source,
            final BuilderContext context,
            final List<ArtifactId> artifactOverrides,
            final String originKey,
            final boolean prototypeMerge,
            final boolean initialMerge) {
        for(final Extension ext : source.getExtensions()) {
            boolean found = false;

            // Make a defensive copy of the extensions, as the handlers may modify the extensions on the target
            for(final Extension current : new ArrayList<>(target.getExtensions())) {
                if ( current.getName().equals(ext.getName()) ) {
                    found = true;
                    if ( current.getType() != ext.getType() ) {
                        throw new IllegalStateException("Found different types for extension " + current.getName()
                            + " : " + current.getType() + " and " + ext.getType());
                    }
                    boolean handled = false;
                    for(final MergeHandler me : context.getMergeExtensions()) {
                        if ( me.canMerge(current) ) {
                            me.merge(new HandlerContextImpl(context, me, prototypeMerge, initialMerge), target, source, current, ext);
                            handled = true;
                            break;
                        }
                    }
                    if ( !handled ) {
                        // default merge
                        mergeExtensions(current, ext, source, artifactOverrides, originKey);
                    }
                }
            }
            if ( !found ) {
                // The extension isn't found in the target, still call merge to allow handlers to operate on the
                // first extension being aggregated
                boolean handled = false;
                for (final MergeHandler mh : context.getMergeExtensions()) {
                    if (mh.canMerge(ext)) {
                        mh.merge(new HandlerContextImpl(context, mh, prototypeMerge, initialMerge), target, source, null, ext);
                        handled = true;
                        break;
                    }
                }
                if ( !handled ) {
                    // no merge handler, just merge with an empty target
                    Extension current = new Extension(ext.getType(), ext.getName(), ext.getState());
                    target.getExtensions().add(current);
                    mergeExtensions(current, ext, source, artifactOverrides, originKey);
                }
            }
        }

        // post processing
        // Make a defensive copy of the extensions, as the handlers may modify the extensions on the target
        for(final Extension ext : new ArrayList<>(target.getExtensions())) {
            for(final PostProcessHandler ppe : context.getPostProcessExtensions()) {
                ppe.postProcess(new HandlerContextImpl(context, ppe, prototypeMerge, initialMerge), target, ext);
            }
        }
    }