Package se.liu.ida.hefquin.engine.wrappers.graphql.impl

Class GraphQLSchemaInitializerImpl

java.lang.Object

se.liu.ida.hefquin.engine.wrappers.graphql.impl.GraphQLSchemaInitializerImpl

All Implemented Interfaces:

GraphQLSchemaInitializer

public class GraphQLSchemaInitializerImpl
extends Object
implements GraphQLSchemaInitializer

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	iFields
protected static final String	iKind
protected static final String	iMutationType
protected static final String	iName
protected static final String	iOfType
protected static final String	iQueryArgs
protected static final String	iQueryType
protected static final String	iSchema
protected static final String	iSubscriptionType
protected static final String	iType
protected static final String	iTypes
protected static final String	mutationPath
protected static final String	ofTypePath
protected static final String	queryTypeArgsPath1
protected static final String	queryTypeArgsPath2
protected static final String	queryTypePath1
protected static final String	queryTypePath2
protected static final String	queryTypePath3
protected static final String	schemaPath
protected static final String	subscriptionPath
protected static final String	typePath1
protected static final String	typePath2
protected static final String	typePath3

Constructor Summary

Constructors

Constructor	Description
GraphQLSchemaInitializerImpl()

Method Summary

Modifier and Type	Method	Description
protected Pair<String,GraphQLFieldType>	determineTypeInformation(org.apache.jena.atlas.json.JsonObject field)	Parses introspection data to determine information about a specific GraphQL field.
protected static GraphQLQuery	getIntrospectionQuery()
GraphQLSchema	initializeSchema(String url, int connectionTimeout, int readTimeout)
protected Map<String,Map<GraphQLEntrypointType,GraphQLEntrypoint>>	parseEntrypoints(org.apache.jena.atlas.json.JsonObject data)	Initializes GraphQLEntrypoints by parsing the __schema/queryType parts of the json.
protected Map<String,Map<String,GraphQLField>>	parseTypesAndFields(org.apache.jena.atlas.json.JsonObject data)	Initializes the available GraphQL types and fields received from the response.
protected GraphQLSchema	validateTypesAndEntrypoints(Map<String,Map<String,GraphQLField>> typesAndFields, Map<String,Map<GraphQLEntrypointType,GraphQLEntrypoint>> entrypoints)	Removes the types, fields and entrypoints from the @param typesAndFields and @param entrypoints and notes their removal if they don't meet the criteria for the approach.

Methods inherited from class java.lang.Object

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

Field Details

iSchema

protected static final String iSchema

See Also:

• Constant Field Values

iName

protected static final String iName

See Also:

• Constant Field Values

iKind

protected static final String iKind

See Also:

• Constant Field Values

iType

protected static final String iType

See Also:

• Constant Field Values

iTypes

protected static final String iTypes

See Also:

• Constant Field Values

iOfType

protected static final String iOfType

See Also:

• Constant Field Values

iFields

protected static final String iFields

See Also:

• Constant Field Values

iQueryType

protected static final String iQueryType

See Also:

• Constant Field Values

iQueryArgs

protected static final String iQueryArgs

See Also:

• Constant Field Values

iSubscriptionType

protected static final String iSubscriptionType

See Also:

• Constant Field Values

iMutationType

protected static final String iMutationType

See Also:

• Constant Field Values

schemaPath

protected static final String schemaPath

See Also:

• Constant Field Values

typePath1

protected static final String typePath1

See Also:

• Constant Field Values

typePath2

protected static final String typePath2

See Also:

• Constant Field Values

typePath3

protected static final String typePath3

See Also:

• Constant Field Values

queryTypePath1

protected static final String queryTypePath1

See Also:

• Constant Field Values

queryTypePath2

protected static final String queryTypePath2

See Also:

• Constant Field Values

queryTypePath3

protected static final String queryTypePath3

See Also:

• Constant Field Values

queryTypeArgsPath1

protected static final String queryTypeArgsPath1

See Also:

• Constant Field Values

queryTypeArgsPath2

protected static final String queryTypeArgsPath2

See Also:

• Constant Field Values

ofTypePath

protected static final String ofTypePath

See Also:

• Constant Field Values

subscriptionPath

protected static final String subscriptionPath

See Also:

• Constant Field Values

mutationPath

protected static final String mutationPath

See Also:

• Constant Field Values

Constructor Details

GraphQLSchemaInitializerImpl

public GraphQLSchemaInitializerImpl()

Method Details

initializeSchema

public GraphQLSchema initializeSchema(String url,
 int connectionTimeout,
 int readTimeout)
                               throws GraphQLException,
org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

Specified by:

initializeSchema in interface GraphQLSchemaInitializer

Throws:

GraphQLException

org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

getIntrospectionQuery

protected static GraphQLQuery getIntrospectionQuery()

Returns:

the GraphQL introspection query to be used.

validateTypesAndEntrypoints

protected GraphQLSchema validateTypesAndEntrypoints(Map<String,Map<String,GraphQLField>> typesAndFields,
 Map<String,Map<GraphQLEntrypointType,GraphQLEntrypoint>> entrypoints)

Removes the types, fields and entrypoints from the @param typesAndFields and @param entrypoints and notes their removal if they don't meet the criteria for the approach. (each type needs an id field etc.)

determineTypeInformation

protected Pair<String,GraphQLFieldType> determineTypeInformation(org.apache.jena.atlas.json.JsonObject field)
                                                          throws org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

Parses introspection data to determine information about a specific GraphQL field.

Returns:

a Pair consisting of the GraphQL valuetype (not including list and/or non-nullable identifiers) and GraphQLFieldType respectively for the GraphQL type. @param field is a JsonObject and should contain the keys: "name", "kind" and alternatively "ofType"

Throws:

org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

parseEntrypoints

protected Map<String,Map<GraphQLEntrypointType,GraphQLEntrypoint>> parseEntrypoints(org.apache.jena.atlas.json.JsonObject data)
                                                                             throws org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

Initializes GraphQLEntrypoints by parsing the __schema/queryType parts of the json.

Throws:

org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

parseTypesAndFields

protected Map<String,Map<String,GraphQLField>> parseTypesAndFields(org.apache.jena.atlas.json.JsonObject data)
                                                            throws org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException

Initializes the available GraphQL types and fields received from the response.

Throws:

org.apache.jena.atlas.json.io.parserjavacc.javacc.ParseException