Source: includes/mappings/post/7-0.php

<?php
/**
 * Elasticsearch mapping for ES 5.2
 *
 * @since  2.4
 * @package elasticpress
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

return array(
	'settings' => array(
		/**
		 * Filter number of Elasticsearch shards to use in indices
		 *
		 * @hook ep_default_index_number_of_shards
		 * @param  {int} $shards Number of shards
		 * @return {int} New number
		 */
		'index.number_of_shards'           => apply_filters( 'ep_default_index_number_of_shards', 5 ),
		/**
		 * Filter number of Elasticsearch replicas to use in indices
		 *
		 * @hook ep_default_index_number_of_replicas
		 * @param  {int} $replicas Number of replicas
		 * @return {int} New number
		 */
		'index.number_of_replicas'         => apply_filters( 'ep_default_index_number_of_replicas', 1 ),
		/**
		 * Filter Elasticsearch total field limit for posts
		 *
		 * @hook ep_total_field_limit
		 * @param  {int} $number Number of fields
		 * @return {int} New number
		 */
		'index.mapping.total_fields.limit' => apply_filters( 'ep_total_field_limit', 5000 ),
		/**
		 * Filter whether Elasticsearch ignores malformed fields or not.
		 *
		 * @hook ep_ignore_malformed
		 * @param  {bool} $ignore True for ignore
		 * @return {bool} New value
		 */
		'index.mapping.ignore_malformed'   => apply_filters( 'ep_ignore_malformed', true ),
		/**
		 * Filter Elasticsearch max result window for posts
		 *
		 * @hook ep_max_result_window
		 * @param  {int} $number Size of result window
		 * @return {int} New number
		 */
		'index.max_result_window'          => apply_filters( 'ep_max_result_window', 1000000 ),
		/**
		 * Filter Elasticsearch maximum shingle difference
		 *
		 * @hook ep_max_shingle_diff
		 * @param  {int} $number Max difference
		 * @return {int} New number
		 */
		'index.max_shingle_diff'           => apply_filters( 'ep_max_shingle_diff', 8 ),
		'analysis'                         => array(
			'analyzer'   => array(
				'default'          => array(
					'tokenizer'   => 'standard',
					/**
					 * Filter Elasticsearch default analyzer's filters
					 *
					 * @since 3.6.2
					 * @hook ep_default_analyzer_filters
					 * @param  {array<string>} $filters Default filters
					 * @return {array<string>} New filters
					 */
					'filter'      => apply_filters( 'ep_default_analyzer_filters', array( 'ewp_word_delimiter', 'lowercase', 'stop', 'ewp_snowball' ) ),
					'char_filter' => array( 'html_strip' ),
					/**
					 * Filter Elasticsearch default language in mapping
					 *
					 * @hook ep_analyzer_language
					 * @param  {string} $lang Default language
					 * @param {string} $lang_context Language context
					 * @return {string} New language
					 */
					'language'    => apply_filters( 'ep_analyzer_language', 'english', 'analyzer_default' ),
				),
				'shingle_analyzer' => array(
					'type'      => 'custom',
					'tokenizer' => 'standard',
					'filter'    => array( 'lowercase', 'shingle_filter' ),
				),
				'ewp_lowercase'    => array(
					'type'      => 'custom',
					'tokenizer' => 'keyword',
					'filter'    => array( 'lowercase' ),
				),
			),
			'filter'     => array(
				'shingle_filter'     => array(
					'type'             => 'shingle',
					'min_shingle_size' => 2,
					'max_shingle_size' => 5,
				),
				'ewp_word_delimiter' => array(
					'type'              => 'word_delimiter_graph',
					'preserve_original' => true,
				),
				'ewp_snowball'       => array(
					'type'     => 'snowball',
					/**
					 * Filter Elasticsearch default language in mapping
					 *
					 * @hook ep_analyzer_language
					 * @param  {string} $lang Default language
					 * @param {string} $lang_context Language context
					 * @return {string} New language
					 */
					'language' => apply_filters( 'ep_analyzer_language', 'english', 'filter_ewp_snowball' ),
				),
				'edge_ngram'         => array(
					'side'     => 'front',
					'max_gram' => 10,
					'min_gram' => 3,
					'type'     => 'edge_ngram',
				),
			),
			'normalizer' => array(
				'lowerasciinormalizer' => array(
					'type'   => 'custom',
					'filter' => array( 'lowercase', 'asciifolding' ),
				),
			),
		),
	),
	'mappings' => array(
		'_meta'             => array(
			'mapping_version' => '7-0.php',
		),
		'date_detection'    => false,
		'dynamic_templates' => array(
			array(
				'template_meta' => array(
					'path_match' => 'post_meta.*',
					'mapping'    => array(
						'type'   => 'text',
						'fields' => array(
							'{name}' => array(
								'type' => 'text',
							),
							'raw'    => array(
								'type'         => 'keyword',
								'ignore_above' => 10922,
							),
						),
					),
				),
			),
			array(
				'template_meta_types' => array(
					'path_match' => 'meta.*',
					'mapping'    => array(
						'type'       => 'object',
						'properties' => array(
							'value'    => array(
								'type'   => 'text',
								'fields' => array(
									'sortable' => array(
										'type'         => 'keyword',
										'ignore_above' => 10922,
										'normalizer'   => 'lowerasciinormalizer',
									),
									'raw'      => array(
										'type'         => 'keyword',
										'ignore_above' => 10922,
									),
								),
							),
							'raw'      => array( /* Left for backwards compat */
								'type'         => 'keyword',
								'ignore_above' => 10922,
							),
							'long'     => array(
								'type' => 'long',
							),
							'double'   => array(
								'type' => 'double',
							),
							'boolean'  => array(
								'type' => 'boolean',
							),
							'date'     => array(
								'type'   => 'date',
								'format' => 'yyyy-MM-dd',
							),
							'datetime' => array(
								'type'   => 'date',
								'format' => 'yyyy-MM-dd HH:mm:ss',
							),
							'time'     => array(
								'type'   => 'date',
								'format' => 'HH:mm:ss',
							),
						),
					),
				),
			),
			array(
				'template_terms' => array(
					'path_match' => 'terms.*',
					'mapping'    => array(
						'type'       => 'object',
						'properties' => array(
							'name'             => array(
								'type'   => 'text',
								'fields' => array(
									'raw'      => array(
										'type' => 'keyword',
									),
									'sortable' => array(
										'type'       => 'keyword',
										'normalizer' => 'lowerasciinormalizer',
									),
								),
							),
							'term_id'          => array(
								'type' => 'long',
							),
							'term_taxonomy_id' => array(
								'type' => 'long',
							),
							'parent'           => array(
								'type' => 'long',
							),
							'slug'             => array(
								'type' => 'keyword',
							),
							'facet'            => array(
								'type' => 'keyword',
							),
							'term_order'       => array(
								'type' => 'long',
							),
						),
					),
				),
			),
			array(
				'term_suggest' => array(
					'path_match' => 'term_suggest_*',
					'mapping'    => array(
						'type'     => 'completion',
						'analyzer' => 'default',
					),
				),
			),
		),
		'properties'        => array(
			'post_id'               => array(
				'type' => 'long',
			),
			'ID'                    => array(
				'type' => 'long',
			),
			'post_author'           => array(
				'type'       => 'object',
				'properties' => array(
					'display_name' => array(
						'type'   => 'text',
						'fields' => array(
							'raw'      => array(
								'type' => 'keyword',
							),
							'sortable' => array(
								'type'       => 'keyword',
								'normalizer' => 'lowerasciinormalizer',
							),
						),
					),
					'login'        => array(
						'type'   => 'text',
						'fields' => array(
							'raw'      => array(
								'type' => 'keyword',
							),
							'sortable' => array(
								'type'       => 'keyword',
								'normalizer' => 'lowerasciinormalizer',
							),
						),
					),
					'id'           => array(
						'type' => 'long',
					),
					'raw'          => array(
						'type' => 'keyword',
					),
				),
			),
			'post_date'             => array(
				'type'   => 'date',
				'format' => 'yyyy-MM-dd HH:mm:ss',
			),
			'post_date_gmt'         => array(
				'type'   => 'date',
				'format' => 'yyyy-MM-dd HH:mm:ss',
			),
			'post_title'            => array(
				'type'   => 'text',
				'fields' => array(
					'post_title' => array(
						'type'     => 'text',
						'analyzer' => 'standard',
					),
					'raw'        => array(
						'type'         => 'keyword',
						'ignore_above' => 10922,
					),
					'sortable'   => array(
						'type'         => 'keyword',
						'ignore_above' => 10922,
						'normalizer'   => 'lowerasciinormalizer',
					),
				),
			),
			'post_excerpt'          => array(
				'type' => 'text',
			),
			'post_password'         => array(
				'type' => 'text',
			),
			'post_content'          => array(
				'type' => 'text',
			),
			'post_content_filtered' => array(
				'type' => 'text',
			),
			'post_status'           => array(
				'type' => 'keyword',
			),
			'post_name'             => array(
				'type'   => 'text',
				'fields' => array(
					'post_name' => array(
						'type' => 'text',
					),
					'raw'       => array(
						'type'         => 'keyword',
						'ignore_above' => 10922,
					),
				),
			),
			'post_modified'         => array(
				'type'   => 'date',
				'format' => 'yyyy-MM-dd HH:mm:ss',
			),
			'post_modified_gmt'     => array(
				'type'   => 'date',
				'format' => 'yyyy-MM-dd HH:mm:ss',
			),
			'post_parent'           => array(
				'type' => 'long',
			),
			'post_type'             => array(
				'type'   => 'text',
				'fields' => array(
					'post_type' => array(
						'type' => 'text',
					),
					'raw'       => array(
						'type' => 'keyword',
					),
				),
			),
			'post_mime_type'        => array(
				'type' => 'keyword',
			),
			'permalink'             => array(
				'type' => 'keyword',
			),
			'guid'                  => array(
				'type' => 'keyword',
			),
			'terms'                 => array(
				'type' => 'object',
			),
			'post_meta'             => array(
				'type' => 'object',
			),
			'meta'                  => array(
				'type' => 'object',
			),
			'date_terms'            => array(
				'type'       => 'object',
				'properties' => array(
					'year'          => array( // 4 digit year (e.g. 2011).
						'type' => 'integer',
					),
					'month'         => array( // Month number (from 1 to 12) alternate name 'monthnum'.
						'type' => 'integer',
					),
					'm'             => array( // YearMonth (For e.g.: 201307).
						'type' => 'integer',
					),
					'week'          => array( // Week of the year (from 0 to 53) alternate name 'w'.
						'type' => 'integer',
					),
					'day'           => array( // Day of the month (from 1 to 31).
						'type' => 'integer',
					),
					'dayofweek'     => array( // Accepts numbers 1-7 (1 is Sunday).
						'type' => 'integer',
					),
					'dayofweek_iso' => array( // Accepts numbers 1-7 (1 is Monday).
						'type' => 'integer',
					),
					'dayofyear'     => array( // Accepts numbers 1-366.
						'type' => 'integer',
					),
					'hour'          => array( // Hour (from 0 to 23).
						'type' => 'integer',
					),
					'minute'        => array( // Minute (from 0 to 59).
						'type' => 'integer',
					),
					'second'        => array( // Second (0 to 59).
						'type' => 'integer',
					),
				),
			),
			'thumbnail'             => array(
				'type'       => 'object',
				'properties' => array(
					'ID'     => array(
						'type' => 'long',
					),
					'src'    => array(
						'type' => 'text',
					),
					'width'  => array(
						'type' => 'integer',
					),
					'height' => array(
						'type' => 'integer',
					),
					'alt'    => array(
						'type' => 'text',
					),
				),
			),
		),
	),
);