Package org.craftercms.engine.graphql.impl.fetchers

Class ContentTypeBasedDataFetcher

java.lang.Object

org.craftercms.engine.graphql.impl.fetchers.RequestAwareDataFetcher<Object>

org.craftercms.engine.graphql.impl.fetchers.ContentTypeBasedDataFetcher

All Implemented Interfaces:

graphql.schema.DataFetcher<Object>

public class ContentTypeBasedDataFetcher
extends RequestAwareDataFetcher<Object>

Implementation of DataFetcher that queries Elasticsearch to retrieve content based on a content type.

Since:

3.1

Author:

joseross

Field Summary

Fields

Modifier and Type	Field	Description
static String	COMPONENT_INCLUDE_REGEX
static String	CONTENT_TYPE_REGEX_COMPONENT
static String	CONTENT_TYPE_REGEX_PAGE
protected int	defaultLimit	The default value for the 'limit' argument
protected String	defaultSortField	The default value for the 'sortBy' argument
protected String	defaultSortOrder	The default value for the 'sortOrder' argument
protected org.craftercms.search.elasticsearch.client.ElasticsearchClientWrapper	elasticsearchClient	The instance of ElasticsearchClientWrapper

Constructor Summary

Constructors

Constructor	Description
ContentTypeBasedDataFetcher()

Method Summary

Modifier and Type	Method	Description
protected void	addFieldFilterFromMapEntry(String path, Map.Entry<String,Object> filter, co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery.Builder query, graphql.schema.DataFetchingEnvironment env)
protected void	addFieldFilterFromObjectField(String path, graphql.language.ObjectField filter, co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery.Builder query, graphql.schema.DataFetchingEnvironment env)
Object	doGet(graphql.schema.DataFetchingEnvironment env)	Performs the actual fetching of the requested fields.
protected Map<String,Object>	fixItems(Map<String,Object> map)	Checks for fields containing the 'item' keyword and makes sure they are always a list even if there is only one value.
protected co.elastic.clients.elasticsearch._types.query_dsl.Query	getFilterQueryFromMapEntry(String fieldPath, Map.Entry<String,Object> filter)
protected co.elastic.clients.elasticsearch._types.query_dsl.Query	getFilterQueryFromObjectField(String fieldPath, graphql.language.ObjectField filter, graphql.schema.DataFetchingEnvironment env)
protected Object	getRealValue(graphql.language.Value value, graphql.schema.DataFetchingEnvironment env)	Extracts a scalar value, this is needed because of GraphQL strict types
protected void	processSelection(String path, graphql.language.Selection currentSelection, co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery.Builder query, List<String> queryFieldIncludes, graphql.schema.DataFetchingEnvironment env)	Adds the required filters to the ES query for the given field
void	setDefaultLimit(int defaultLimit)
void	setDefaultSortField(String defaultSortField)
void	setDefaultSortOrder(String defaultSortOrder)
void	setElasticsearchClient(org.craftercms.search.elasticsearch.client.ElasticsearchClientWrapper elasticsearchClient)

Methods inherited from class org.craftercms.engine.graphql.impl.fetchers.RequestAwareDataFetcher

get

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CONTENT_TYPE_REGEX_PAGE

public static final String CONTENT_TYPE_REGEX_PAGE

See Also:

Constant Field Values

CONTENT_TYPE_REGEX_COMPONENT

public static final String CONTENT_TYPE_REGEX_COMPONENT

See Also:

Constant Field Values

COMPONENT_INCLUDE_REGEX

public static final String COMPONENT_INCLUDE_REGEX

See Also:

Constant Field Values

defaultLimit

protected int defaultLimit

The default value for the 'limit' argument

defaultSortField

protected String defaultSortField

The default value for the 'sortBy' argument

defaultSortOrder

protected String defaultSortOrder

The default value for the 'sortOrder' argument

elasticsearchClient

protected org.craftercms.search.elasticsearch.client.ElasticsearchClientWrapper elasticsearchClient

The instance of ElasticsearchClientWrapper

Constructor Detail

ContentTypeBasedDataFetcher

public ContentTypeBasedDataFetcher()

Method Detail

setDefaultLimit

public void setDefaultLimit(int defaultLimit)

setDefaultSortField

public void setDefaultSortField(String defaultSortField)

setDefaultSortOrder

public void setDefaultSortOrder(String defaultSortOrder)

setElasticsearchClient

public void setElasticsearchClient(org.craftercms.search.elasticsearch.client.ElasticsearchClientWrapper elasticsearchClient)

doGet

public Object doGet(graphql.schema.DataFetchingEnvironment env)
             throws IOException

Performs the actual fetching of the requested fields.

Specified by:

doGet in class RequestAwareDataFetcher<Object>

Parameters:

env - the DataFetchingEnvironment

Returns:

the resolved value

Throws:

IOException

processSelection

protected void processSelection(String path,
                                graphql.language.Selection currentSelection,
                                co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery.Builder query,
                                List<String> queryFieldIncludes,
                                graphql.schema.DataFetchingEnvironment env)

Adds the required filters to the ES query for the given field

addFieldFilterFromObjectField

protected void addFieldFilterFromObjectField(String path,
                                             graphql.language.ObjectField filter,
                                             co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery.Builder query,
                                             graphql.schema.DataFetchingEnvironment env)

addFieldFilterFromMapEntry

protected void addFieldFilterFromMapEntry(String path,
                                          Map.Entry<String,Object> filter,
                                          co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery.Builder query,
                                          graphql.schema.DataFetchingEnvironment env)

getFilterQueryFromObjectField

protected co.elastic.clients.elasticsearch._types.query_dsl.Query getFilterQueryFromObjectField(String fieldPath,
                                                                                                graphql.language.ObjectField filter,
                                                                                                graphql.schema.DataFetchingEnvironment env)

getFilterQueryFromMapEntry

protected co.elastic.clients.elasticsearch._types.query_dsl.Query getFilterQueryFromMapEntry(String fieldPath,
                                                                                             Map.Entry<String,Object> filter)

getRealValue

protected Object getRealValue(graphql.language.Value value,
                              graphql.schema.DataFetchingEnvironment env)

Extracts a scalar value, this is needed because of GraphQL strict types

fixItems

protected Map<String,Object> fixItems(Map<String,Object> map)

Checks for fields containing the 'item' keyword and makes sure they are always a list even if there is only one value. This is needed because the GraphQL schema always needs to return the same type for a field.