private ExclusionStrategy include()

in gson/src/java/org/apache/fulcrum/json/gson/GSONBuilderService.java [393:436]
32 lines of code
5 McCabe index (conditional complexity)

    private ExclusionStrategy include(Class clazz, String... filterAttrs) {
        return new ExclusionStrategy() {

            private Class<?> includeThisClass;
            private HashSet<String> includedAttributes;

            private ExclusionStrategy init(Class<?> includeThisClass,
                    String... filterAttrs) {
                this.includeThisClass = includeThisClass;
                if (filterAttrs != null) {
                    this.includedAttributes = new HashSet<String>(
                            filterAttrs.length);
                    getLogger().debug(" ... adding includedAttributes:" + filterAttrs.length);
                    Collections.addAll(this.includedAttributes, filterAttrs);
                    for (String includedAttribute : includedAttributes) {
                        getLogger().debug("includedAttribute:" +includedAttribute);
                    }
                } else
                    this.includedAttributes = new HashSet<String>();

                return this;
            }

            /**
             * skip is current class is not equal provided class
             */
            @Override
            public boolean shouldSkipClass(Class<?> clazz) {
                getLogger().debug(includeThisClass+ ": comparing include class:" + clazz);
                return includeThisClass != null ? !includeThisClass
                        .equals(clazz) : false;
            }

            /**
             * skip if current field attribute is not included are skip else
             */
            @Override
            public boolean shouldSkipField(FieldAttributes paramFieldAttributes) { 
                return !includedAttributes.isEmpty() ? !this.includedAttributes
                        .contains(paramFieldAttributes.getName()) : true;        

            }
        }.init(clazz, filterAttrs);
    }