private JsValue LoadDocument(JsValue self, JsValue[] args)
{
if (args.Length != 2)
{
throw new ArgumentException("The load(id, collection) method expects two arguments, but got: " + args.Length);
}
if (args[0].IsNull() || args[0].IsUndefined())
{
return(JsValue.Undefined);
}
if (args[0].IsString() == false ||
args[1].IsString() == false)
{
throw new ArgumentException($"The load(id, collection) method expects two string arguments, but got: load({args[0]}, {args[1]})");
}
object doc = CurrentIndexingScope.Current.LoadDocument(null, args[0].AsString(), args[1].AsString());
if (JavaScriptIndexUtils.GetValue(_engine, doc, out var item))
{
return(item);
}
return(JsValue.Undefined);
}
public IEnumerable IndexingFunction(IEnumerable <object> items)
{
try
{
foreach (var item in items)
{
_engine.ResetCallStack();
_engine.ResetStatementsCount();
_engine.ResetTimeoutTicks();
if (JavaScriptIndexUtils.GetValue(_engine, item, out JsValue jsItem) == false)
{
continue;
}
{
_oneItemArray[0] = jsItem;
try
{
jsItem = MapFunc.Call(JsValue.Null, _oneItemArray);
}catch (JavaScriptException jse)
{
var(message, success) = JavaScriptIndexFuncException.PrepareErrorMessageForJavaScriptIndexFuncException(MapString, jse);
if (success == false)
{
throw new JavaScriptIndexFuncException($"Failed to execute {MapString}", jse);
}
throw new JavaScriptIndexFuncException($"Failed to execute map script, {message}", jse);
} catch (Exception e)
{
throw new JavaScriptIndexFuncException($"Failed to execute {MapString}", e);
}
if (jsItem.IsArray())
{
var array = jsItem.AsArray();
foreach (var(prop, val) in array.GetOwnProperties())
{
if (prop == "length")
{
continue;
}
yield return(val.Value);
}
}
else if (jsItem.IsObject())
{
yield return(jsItem.AsObject());
}
// we ignore everything else by design, we support only
// objects and arrays, anything else is discarded
}
_resolver.ExplodeArgsOn(null, null);
}
}
finally
{
_oneItemArray[0] = null;
}
}
public void Analyze(Engine engine)
{
HasDynamicReturns = false;
if (!(MapFunc is ScriptFunctionInstance sfi))
{
return;
}
var theFuncAst = sfi.GetFunctionAst();
var res = CheckIfSimpleMapExpression(engine, theFuncAst);
if (res != null)
{
MapFunc = res.Value.Function;
theFuncAst = res.Value.FunctionAst;
}
var loadSearcher = new EsprimaReferencedCollectionVisitor();
loadSearcher.VisitFunctionExpression(theFuncAst);
ReferencedCollections.UnionWith(loadSearcher.ReferencedCollection);
foreach (var returnStatement in JavaScriptIndexUtils.GetReturnStatements(theFuncAst.Body))
{
if (returnStatement.Argument == null) // return;
{
continue;
}
if (!(returnStatement.Argument is ObjectExpression oe))
{
HasDynamicReturns = true;
continue;
}
//If we got here we must validate that all return statements have the same structure.
//Having zero fields means its the first return statements we encounter that has a structure.
if (Fields.Count == 0)
{
foreach (var prop in oe.Properties)
{
var fieldName = prop.Key.GetKey();
if (fieldName == "_")
{
HasDynamicReturns = true;
}
Fields.Add(fieldName);
}
}
else if (CompareFields(oe) == false)
{
throw new InvalidOperationException($"Index {IndexName} contains different return structure from different code paths," +
$" expected properties: {string.Join(", ", Fields)} but also got:{string.Join(", ", oe.Properties.Select(x => x.Key.GetKey()))}");
}
}
}
private JsValue ConstructValues(List <BlittableJsonReaderObject> values)
{
var items = new PropertyDescriptor[values.Count];
for (int j = 0; j < values.Count; j++)
{
var val = values[j];
if (JavaScriptIndexUtils.GetValue(Engine, val, out JsValue jsValue, true) == false)
{
continue;
}
items[j] = new PropertyDescriptor(jsValue, true, true, true);
}
var jsArray = new ArrayInstance(Engine, items);
jsArray.Prototype = Engine.Array.PrototypeObject;
jsArray.Extensible = false;
var result = new ObjectInstance(Engine)
{
Extensible = true
};
result.Put("values", jsArray, false);
if (_singleField)
{
var index = values[0].GetPropertyIndex(_groupByFields[0]);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop, addObjectToCache: false);
result.Put("key", JsValue.FromObject(Engine, prop.Value), false);
}
}
else
{
var key = new ObjectInstance(Engine)
{
Extensible = true
};
result.Put("key", key, false);
for (int i = 0; i < _groupByFields.Length; i++)
{
var index = values[0].GetPropertyIndex(_groupByFields[i]);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop, addObjectToCache: false);
key.Put(_groupByFields[i], JsValue.FromObject(Engine, prop.Value), false);
}
}
}
return(result);
}
public void Analyze(Engine engine)
{
HasDynamicReturns = false;
HasBoostedFields = false;
IFunction theFuncAst;
switch (MapFunc)
{
case ArrowFunctionInstance afi:
theFuncAst = afi.FunctionDeclaration;
break;
case ScriptFunctionInstance sfi:
theFuncAst = sfi.FunctionDeclaration;
break;
default:
return;
}
var res = CheckIfSimpleMapExpression(engine, theFuncAst);
if (res != null)
{
MapFunc = res.Value.Function;
theFuncAst = res.Value.FunctionAst;
}
foreach (var returnStatement in JavaScriptIndexUtils.GetReturnStatements(theFuncAst))
{
if (returnStatement.Argument == null) // return;
{
continue;
}
switch (returnStatement.Argument)
{
case ObjectExpression oe:
//If we got here we must validate that all return statements have the same structure.
//Having zero fields means its the first return statements we encounter that has a structure.
if (Fields.Count == 0)
{
foreach (var prop in oe.Properties)
{
if (prop is Property property)
{
var fieldName = property.GetKey(engine);
var fieldNameAsString = fieldName.AsString();
if (fieldName == "_")
{
HasDynamicReturns = true;
}
Fields.Add(fieldNameAsString);
var fieldValue = property.Value;
if (IsBoostExpression(fieldValue))
{
HasBoostedFields = true;
}
}
}
}
else if (CompareFields(oe) == false)
{
throw new InvalidOperationException($"Index {IndexName} contains different return structure from different code paths," +
$" expected properties: {string.Join(", ", Fields)} but also got:{string.Join(", ", oe.Properties.Select(x => x.GetKey(engine)))}");
}
break;
case CallExpression ce:
if (IsBoostExpression(ce))
{
HasBoostedFields = true;
}
else
{
HasDynamicReturns = true;
}
break;
default:
HasDynamicReturns = true;
break;
}
}
private JsValue ConstructGrouping(List <BlittableJsonReaderObject> values)
{
var jsValues = ConstructValues();
var jsKey = ConstructKey();
var result = new ObjectInstance(Engine)
{
Extensible = true
};
result.Put("values", jsValues, false);
result.Put("key", jsKey, false);
return(result);
JsValue ConstructKey()
{
if (_singleField)
{
var index = values[0].GetPropertyIndex(_groupByFields[0].Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
return(JsValue.FromObject(Engine, prop.Value));
}
return(JsValue.Null);
}
var key = new ObjectInstance(Engine)
{
Extensible = true
};
foreach (var groupByField in _groupByFields)
{
var index = values[0].GetPropertyIndex(groupByField.Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
var propertyName = groupByField.Name;
if (groupByField is JsNestedField jsnf)
{
propertyName = jsnf.PropertyName;
}
var value = groupByField.GetValue(null, prop.Value);
key.Put(propertyName, JsValue.FromObject(Engine, value), throwOnError: false);
}
}
return(key);
}
ArrayInstance ConstructValues()
{
var items = new PropertyDescriptor[values.Count];
for (var i = 0; i < values.Count; i++)
{
var val = values[i];
if (JavaScriptIndexUtils.GetValue(Engine, val, out var jsValue, isMapReduce: true) == false)
{
continue;
}
items[i] = new PropertyDescriptor(jsValue, true, true, true);
}
var jsArray = new ArrayInstance(Engine, items)
{
Prototype = Engine.Array.PrototypeObject,
Extensible = false
};
return(jsArray);
}
}
private JsValue ConstructGrouping(List <BlittableJsonReaderObject> values)
{
var jsValues = ConstructValues();
var jsKey = ConstructKey();
var result = new ObjectInstance(Engine)
{
Extensible = true
};
result.Put("values", jsValues, false);
result.Put("key", jsKey, false);
return(result);
JsValue ConstructKey()
{
if (_singleField)
{
var index = values[0].GetPropertyIndex(_groupByFields[0].Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
return(JsValue.FromObject(Engine, prop.Value));
}
return(JsValue.Null);
}
var key = new ObjectInstance(Engine)
{
Extensible = true
};
foreach (var groupByField in _groupByFields)
{
var index = values[0].GetPropertyIndex(groupByField.Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
var propertyName = groupByField.Name;
if (groupByField is JsNestedField jsnf)
{
propertyName = jsnf.PropertyName;
}
var value = groupByField.GetValue(null, prop.Value);
JsValue jsValue = value switch
{
BlittableJsonReaderObject bjro => new BlittableObjectInstance(Engine, null, bjro, null, null, null),
Document doc => new BlittableObjectInstance(Engine, null, doc.Data, doc),
LazyStringValue lsv => new JsString(lsv.ToString()),
LazyCompressedStringValue lcsv => new JsString(lcsv.ToString()),
LazyNumberValue lnv => new JsNumber(lnv.ToDouble(CultureInfo.InvariantCulture)),
_ => JsValue.FromObject(Engine, value)
};
key.Put(propertyName, jsValue, throwOnError: false);
}
}
return(key);
}
ArrayInstance ConstructValues()
{
var items = new PropertyDescriptor[values.Count];
for (var i = 0; i < values.Count; i++)
{
var val = values[i];
if (JavaScriptIndexUtils.GetValue(Engine, val, out var jsValue, isMapReduce: true) == false)
{
continue;
}
items[i] = new PropertyDescriptor(jsValue, true, true, true);
}
var jsArray = new ArrayInstance(Engine, items)
{
Prototype = Engine.Array.PrototypeObject,
Extensible = false
};
return(jsArray);
}
}
