public static int compare()

in src/main/java/org/apache/sling/installer/core/impl/RegisteredResourceImpl.java [458:515]
43 lines of code
18 McCabe index (conditional complexity)

    public static int compare(final TaskResource a, final TaskResource b) {
        int result = 0;

        // check entity id first
        final String aId = a.getEntityId();
        final String bId = b.getEntityId();
        if(aId != null && bId != null) {
            result = aId.compareTo(bId);
        }

        boolean hasVersion = false;
        if ( result == 0 ) {
            // compare versions
            boolean isSnapshot = false;

            // Order by version
            final Version va = a.getVersion();
            final Version vb = b.getVersion();

            if ( va != null && vb != null ) {
                hasVersion = true;
                isSnapshot = va.toString().contains("SNAPSHOT");
                // higher version has more priority, must come first so invert comparison
                result = vb.compareTo(va);
            }

            // Then by priority, higher values first
            if (result == 0) {
                result = Integer.valueOf(b.getPriority()).compareTo(a.getPriority());
            }

            if (result == 0 && isSnapshot) {
                // higher digest has more priority, must come first so invert comparison
                result = b.getDigest().compareTo(a.getDigest());
            }
        }

        if ( result == 0 && a.getState() != b.getState() ) {
            if ( a.getState() == ResourceState.INSTALLED ) {
                return -1;
            } else if ( b.getState() == ResourceState.INSTALLED ) {
                return 1;
            } else if ( a.getState() == ResourceState.INSTALL ) {
                return -1;
            } else if ( b.getState() == ResourceState.INSTALL ) {
                return 1;
            }
        }
        if ( result == 0 ) {
            // finally use url and then digest
            result = a.getURL().compareTo(b.getURL());
            if ( result == 0 && !hasVersion ) {
                // higher digest has more priority, must come first so invert comparison
                result = b.getDigest().compareTo(a.getDigest());
            }
        }
        return result;
    }