original facets JSON with some docs

facets.json

{
	/*
	 * You can have any number of facet objects in the facet array, including 0.
	 */
	facets: [
		/*
		 * Each object has required fields:
		 *
		 *		className: the classname of the entity (used for finding the
		 * 			indexer, etc.)
		 *		data: an object that defines the facet type specific settings
		 * 			(this is flexible so that developers can add their own
		 *			settings and pass those from configuration to display)
		 *		displayStyle: the keyword referencing the template used to
		 *			render this facet type (each facet type could have
		 *			any number of display types, and since these are just
		 *			keywords referencing a jsp or template file so that
		 *			developers can create their own display types)
		 *		fieldName: is the name of the facet in the index
		 *		label: the label used for localize naming of the facet in the
		 *			list of facets
		 *		order: this is the ordering in which the facet results will be
		 *			returned, there are only two possible values
		 *				- 'OrderHitsDesc', highest frequency at the top
		 *				- 'OrderValueAsc', ordered by term alphabetically
		 *		static:	whether the configuration is set with static settings
		 *			and if so indicates that the facet not be rendered (this
		 *			allows for predefined custom searches that have unchangeable
		 *			presets)
		 *		weight: when the facet is not static, the weight indicates
		 *			the order in which to list the facets
		 */
		{
			className: 'com.liferay.portal.kernel.search.facet.AssetEntriesFacet',
			data: {
				/*
				 * The AssetEntriesFacet facet type has two settings:
				 *
				 *		frequencyThreshold: indicates the minimum frequency at
				 *			which a facet term should be displayed
				 *		values: an array of the asset types that are allowed to
				 *			be searched
				 */
				frequencyThreshold: 1,
				values: [
					'com.liferay.portlet.bookmarks.model.BookmarksEntry',
					'com.liferay.portlet.blogs.model.BlogsEntry',
					'com.liferay.portlet.calendar.model.CalEvent',
					'com.liferay.portlet.journal.model.JournalArticle',
					'com.liferay.portlet.messageboards.model.MBMessage',
					'com.liferay.portlet.wiki.model.WikiPage',
				]
			},
			displayStyle: 'asset_entries',
			fieldName: 'entryClassName',
			label: 'asset-type',
			order: 'OrderHitsDesc',
			static: false,
			weight: 1.5
		},
		{
			className: 'com.liferay.portal.kernel.search.facet.MultiValueFacet',
			data: {
				/*
				 * The MultiValueFacet facet type has four settings:
				 *
				 *		displayStyle: 'list' shows the facet results as a center
				 *			justified list or 'cloud' which shows the frequency
				 *			as larger text
				 *		frequencyThreshold: indicates the minimum frequency at
				 *			which a facet term should be displayed
				 *		maxTerms: only show this many terms (the first
				 *			'maxTerms' facet results based on the 'order'
				 *			setting)
				 *		showAssetCount: whether or not to show the frequency in
				 *			parenthesis
				 */
				displayStyle: 'list',
				frequencyThreshold: 1,
				maxTerms: 10,
				showAssetCount: true
			},
			displayStyle: 'asset_tags',
			fieldName: 'assetTagNames',
			label: "tags",
			order: 'OrderValueAsc',
			static: false,
			weight: 1.4
		},
		{
			className: 'com.liferay.portal.kernel.search.facet.MultiValueFacet',
			data: {
				displayStyle: 'list',
				frequencyThreshold: 1,
				maxTerms: 10,
				showAssetCount: true
			},
			displayStyle: 'asset_tags',
			fieldName: 'assetCategoryNames',
			label: "categories",
			order: 'OrderValueAsc',
			static: false,
			weight: 1.3
		},
		{
			className: 'com.liferay.portal.kernel.search.facet.RangeFacet',
			fieldName: 'modified',
			data: {
				/*
				 * The RangeFacet facet type has two settings:
				 *
				 *		frequencyThreshold: indicates the minimum frequency at
				 *			which a facet term should be displayed
				 *		ranges: and array of preset ranges to choose from, each
				 *			defined by a label and range definition. the range
				 *			definitions must be valid lucene range syntax and
				 *			must match the type of the field (when this type
				 *			config is 'static' only the first range entry will
				 *			be used, in the case of using the 'calendar'
				 *			displayType, only a single range should be applied,
				 *			and if the upper bound value is '*' then a current
				 *			date function will be used for that value)
				 */
				frequencyThreshold: 1,
				ranges: [
					{label:'modified', range:'[19700101000000 TO *]'}
				]
			},
			displayStyle: 'calendar',
			label: 'modified',
			order: 'OrderHitsDesc',
			static: false,
			weight: 1.1
		}
	]
}