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Kh/to avro #58
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,143 @@ | ||
| local path = (...):gsub('%.[^%.]+$', '') | ||
|
There was a problem hiding this comment. It seems that you more or less investigated this functions. It would be glab to see brief comments for them. There was a problem hiding this comment. I have just copied). I will do further investigations. There was a problem hiding this comment. So, (...) stores the string passed to require when the
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| local types = require(path .. '.types') | ||
| local util = require(path .. '.util') | ||
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| local query_util = {} | ||
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| local function typeFromAST(node, schema) | ||
| local innerType | ||
| if node.kind == 'listType' then | ||
| innerType = typeFromAST(node.type) | ||
| return innerType and types.list(innerType) | ||
| elseif node.kind == 'nonNullType' then | ||
| innerType = typeFromAST(node.type) | ||
| return innerType and types.nonNull(innerType) | ||
| else | ||
| assert(node.kind == 'namedType', 'Variable must be a named type') | ||
| return schema:getType(node.name.value) | ||
| end | ||
| end | ||
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| local function getFieldResponseKey(field) | ||
| return field.alias and field.alias.name.value or field.name.value | ||
| end | ||
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| local function shouldIncludeNode(selection, context) | ||
| if selection.directives then | ||
| local function isDirectiveActive(key, _type) | ||
| local directive = util.find(selection.directives, function(directive) | ||
| return directive.name.value == key | ||
| end) | ||
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| if not directive then return end | ||
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| local ifArgument = util.find(directive.arguments, function(argument) | ||
| return argument.name.value == 'if' | ||
| end) | ||
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| if not ifArgument then return end | ||
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| return util.coerceValue(ifArgument.value, _type.arguments['if'], context.variables) | ||
| end | ||
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| if isDirectiveActive('skip', types.skip) then return false end | ||
| if isDirectiveActive('include', types.include) == false then return false end | ||
| end | ||
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| return true | ||
| end | ||
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| local function doesFragmentApply(fragment, type, context) | ||
| if not fragment.typeCondition then return true end | ||
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| local innerType = typeFromAST(fragment.typeCondition, context.schema) | ||
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| if innerType == type then | ||
| return true | ||
| elseif innerType.__type == 'Interface' then | ||
| local implementors = context.schema:getImplementors(innerType.name) | ||
| return implementors and implementors[type] | ||
| elseif innerType.__type == 'Union' then | ||
| return util.find(innerType.types, function(member) | ||
| return member == type | ||
| end) | ||
| end | ||
| end | ||
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| function query_util.collectFields(objectType, selections, visitedFragments, result, context) | ||
| for _, selection in ipairs(selections) do | ||
| if selection.kind == 'field' then | ||
| if shouldIncludeNode(selection, context) then | ||
| local name = getFieldResponseKey(selection) | ||
| result[name] = result[name] or {} | ||
| table.insert(result[name], selection) | ||
| end | ||
| elseif selection.kind == 'inlineFragment' then | ||
| if shouldIncludeNode(selection, context) and doesFragmentApply(selection, objectType, context) then | ||
| collectFields(objectType, selection.selectionSet.selections, visitedFragments, result, context) | ||
| end | ||
| elseif selection.kind == 'fragmentSpread' then | ||
| local fragmentName = selection.name.value | ||
| if shouldIncludeNode(selection, context) and not visitedFragments[fragmentName] then | ||
| visitedFragments[fragmentName] = true | ||
| local fragment = context.fragmentMap[fragmentName] | ||
| if fragment and shouldIncludeNode(fragment, context) and doesFragmentApply(fragment, objectType, context) then | ||
| collectFields(objectType, fragment.selectionSet.selections, visitedFragments, result, context) | ||
| end | ||
| end | ||
| end | ||
| end | ||
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| return result | ||
| end | ||
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| function query_util.mergeSelectionSets(fields) | ||
| local selections = {} | ||
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| for i = 1, #fields do | ||
| local selectionSet = fields[i].selectionSet | ||
| if selectionSet then | ||
| for j = 1, #selectionSet.selections do | ||
| table.insert(selections, selectionSet.selections[j]) | ||
| end | ||
| end | ||
| end | ||
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| return selections | ||
| end | ||
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| function query_util.buildContext(schema, tree, rootValue, variables, operationName) | ||
| local context = { | ||
| schema = schema, | ||
| rootValue = rootValue, | ||
| variables = variables, | ||
| operation = nil, | ||
| fragmentMap = {} | ||
| } | ||
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| for _, definition in ipairs(tree.definitions) do | ||
| if definition.kind == 'operation' then | ||
| if not operationName and context.operation then | ||
| error('Operation name must be specified if more than one operation exists.') | ||
| end | ||
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| if not operationName or definition.name.value == operationName then | ||
| context.operation = definition | ||
| end | ||
| elseif definition.kind == 'fragmentDefinition' then | ||
| context.fragmentMap[definition.name.value] = definition | ||
| end | ||
| end | ||
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| if not context.operation then | ||
| if operationName then | ||
| error('Unknown operation "' .. operationName .. '"') | ||
| else | ||
| error('Must provide an operation') | ||
| end | ||
| end | ||
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| return context | ||
| end | ||
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| return query_util | ||
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Why you moved it from buildContext? The
qcontextfield looks as part of context to build up for me.There was a problem hiding this comment.
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I did it just because buildContext since now is uset in to_avro too. And it is not necessary in to_avro. Second, I suppose that we need to pass this variable from tarantool_graphql (compile or/and execute), for example to specify query timeout. What do you think?