apollo-cache/lib/utils.js

Core abstract of Caching layer for Apollo Client

export function queryFromPojo(obj) {
    var op = {
        kind: 'OperationDefinition',
        operation: 'query',
        name: {
            kind: 'Name',
            value: 'GeneratedClientQuery',
        },
        selectionSet: selectionSetFromObj(obj),
    };
    var out = {
        kind: 'Document',
        definitions: [op],
    };
    return out;
}
export function fragmentFromPojo(obj, typename) {
    var frag = {
        kind: 'FragmentDefinition',
        typeCondition: {
            kind: 'NamedType',
            name: {
                kind: 'Name',
                value: typename || '__FakeType',
            },
        },
        name: {
            kind: 'Name',
            value: 'GeneratedClientQuery',
        },
        selectionSet: selectionSetFromObj(obj),
    };
    var out = {
        kind: 'Document',
        definitions: [frag],
    };
    return out;
}
function selectionSetFromObj(obj) {
    if (typeof obj === 'number' ||
        typeof obj === 'boolean' ||
        typeof obj === 'string' ||
        typeof obj === 'undefined' ||
        obj === null) {
        return null;
    }
    if (Array.isArray(obj)) {
        return selectionSetFromObj(obj[0]);
    }
    var selections = [];
    Object.keys(obj).forEach(function (key) {
        var field = {
            kind: 'Field',
            name: {
                kind: 'Name',
                value: key,
            },
        };
        var nestedSelSet = selectionSetFromObj(obj[key]);
        if (nestedSelSet) {
            field.selectionSet = nestedSelSet;
        }
        selections.push(field);
    });
    var selectionSet = {
        kind: 'SelectionSet',
        selections: selections,
    };
    return selectionSet;
}
export var justTypenameQuery = {
    kind: 'Document',
    definitions: [
        {
            kind: 'OperationDefinition',
            operation: 'query',
            name: null,
            variableDefinitions: null,
            directives: [],
            selectionSet: {
                kind: 'SelectionSet',
                selections: [
                    {
                        kind: 'Field',
                        alias: null,
                        name: {
                            kind: 'Name',
                            value: '__typename',
                        },
                        arguments: [],
                        directives: [],
                        selectionSet: null,
                    },
                ],
            },
        },
    ],
};
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