io.stargate.graphql.schema

Class FieldFilterInputTypeCache

java.lang.Object

io.stargate.graphql.schema.FieldFilterInputTypeCache

public class FieldFilterInputTypeCache
extends Object

Caches GraphQL field "filter input" types, for example 'StringFilterInput' in:

 input BooksFilterInput {
   author: StringFilterInput
   title: StringFilterInput
 }
 

These are used when receiving filtering criteria, for example in a 'books' query:

 query {
   books(filter: { author: { eq: "Cormac McCarthy" } }) { ... }
 }
 

Note that these filters are also used in "DELETE IF" and "UPDATE IF" conditions. Some operators only apply in one context, for example "notEq" is allowed in conditional updates, but not selects. We currently have a single filter type with all the operators, it's up to the user to a valid one otherwise the query will fail. We could possibly refine this by creating multiple filter types depending on the context (whether the column is a collection, is a PK, has an SAI index defined for it, etc).

Field Summary

Fields

Modifier and Type	Field and Description
protected NameMapping	nameMapping

Method Summary

Modifier and Type	Method and Description
protected graphql.schema.GraphQLInputType	compute(Column.ColumnType columnType) Computes a result on a cache miss.
protected graphql.schema.GraphQLScalarType	getScalar(Column.Type type)

Methods inherited from class java.lang.Object

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

Field Detail

nameMapping

protected final NameMapping nameMapping

Method Detail

compute

protected graphql.schema.GraphQLInputType compute(Column.ColumnType columnType)

Computes a result on a cache miss. If you need nested types, use get(io.stargate.db.schema.Column.ColumnType) to obtain them, in case they were already cached.

getScalar

protected graphql.schema.GraphQLScalarType getScalar(Column.Type type)