tantivy-py/src/document.rs

909 lines
29 KiB
Rust

#![allow(clippy::new_ret_no_self)]
#![allow(clippy::wrong_self_convention)]
use itertools::Itertools;
use pyo3::{
basic::CompareOp,
prelude::*,
types::{
PyAny, PyBool, PyDateAccess, PyDateTime, PyDict, PyInt, PyList,
PyTimeAccess, PyTuple,
},
Python,
};
use chrono::{offset::TimeZone, NaiveDateTime, Utc};
use tantivy::{self as tv, schema::document::OwnedValue as Value};
use crate::{facet::Facet, schema::Schema, to_pyerr};
use serde::{
ser::SerializeMap, Deserialize, Deserializer, Serialize, Serializer,
};
use std::{
collections::BTreeMap,
fmt,
net::{IpAddr, Ipv6Addr},
str::FromStr,
};
pub(crate) fn extract_value(any: &Bound<PyAny>) -> PyResult<Value> {
if let Ok(s) = any.extract::<String>() {
return Ok(Value::Str(s));
}
if any.is_exact_instance_of::<PyBool>() {
return Ok(Value::Bool(any.extract::<bool>()?));
}
if let Ok(num) = any.extract::<i64>() {
return Ok(Value::I64(num));
}
if let Ok(num) = any.extract::<f64>() {
return Ok(Value::F64(num));
}
if let Ok(datetime) = any.extract::<NaiveDateTime>() {
return Ok(Value::Date(tv::DateTime::from_timestamp_secs(
datetime.and_utc().timestamp(),
)));
}
if let Ok(facet) = any.extract::<Facet>() {
return Ok(Value::Facet(facet.inner));
}
if let Ok(b) = any.extract::<Vec<u8>>() {
return Ok(Value::Bytes(b));
}
if let Ok(dict) = any.downcast::<PyDict>() {
if let Ok(json) = pythonize::depythonize_bound(dict.clone().into_any())
{
return Ok(Value::Object(json));
}
}
Err(to_pyerr(format!("Value unsupported {any:?}")))
}
pub(crate) fn extract_value_for_type(
any: &Bound<PyAny>,
tv_type: tv::schema::Type,
field_name: &str,
) -> PyResult<Value> {
// Helper function to create `PyErr`s returned by this function.
fn to_pyerr_for_type<'a, E: std::error::Error>(
type_name: &'a str,
field_name: &'a str,
any: &'a Bound<PyAny>,
) -> impl Fn(E) -> PyErr + 'a {
move |_| {
to_pyerr(format!(
"Expected {} type for field {}, got {:?}",
type_name, field_name, any
))
}
}
let value = match tv_type {
tv::schema::Type::Str => Value::Str(
any.extract::<String>()
.map_err(to_pyerr_for_type("Str", field_name, any))?,
),
tv::schema::Type::U64 => Value::U64(
any.extract::<u64>()
.map_err(to_pyerr_for_type("U64", field_name, any))?,
),
tv::schema::Type::I64 => Value::I64(
any.extract::<i64>()
.map_err(to_pyerr_for_type("I64", field_name, any))?,
),
tv::schema::Type::Bool => Value::Bool(
any.extract::<bool>()
.map_err(to_pyerr_for_type("Bool", field_name, any))?,
),
tv::schema::Type::F64 => Value::F64(
any.extract::<f64>()
.map_err(to_pyerr_for_type("F64", field_name, any))?,
),
tv::schema::Type::Date => {
let datetime = any
.extract::<NaiveDateTime>()
.map_err(to_pyerr_for_type("DateTime", field_name, any))?;
Value::Date(tv::DateTime::from_timestamp_secs(
datetime.and_utc().timestamp(),
))
}
tv::schema::Type::Facet => Value::Facet(
any.extract::<Facet>()
.map_err(to_pyerr_for_type("Facet", field_name, any))?
.inner,
),
tv::schema::Type::Bytes => Value::Bytes(
any.extract::<Vec<u8>>()
.map_err(to_pyerr_for_type("Bytes", field_name, any))?,
),
tv::schema::Type::Json => {
if let Ok(json_str) = any.extract::<&str>() {
return serde_json::from_str(json_str)
.map(Value::Object)
.map_err(to_pyerr_for_type("Json", field_name, any));
}
Value::Object(
any.downcast::<PyDict>()
.map_err(to_pyerr_for_type("Json", field_name, any))
.and_then(|dict| {
pythonize::depythonize_bound(dict.clone().into_any())
.map_err(to_pyerr_for_type("Json", field_name, any))
})?,
)
}
tv::schema::Type::IpAddr => {
let val = any
.extract::<&str>()
.map_err(to_pyerr_for_type("IpAddr", field_name, any))?;
IpAddr::from_str(val)
.map(|addr| match addr {
IpAddr::V4(addr) => addr.to_ipv6_mapped(),
IpAddr::V6(addr) => addr,
})
.map(Value::IpAddr)
.map_err(to_pyerr_for_type("IpAddr", field_name, any))?
}
};
Ok(value)
}
fn extract_value_single_or_list(any: &Bound<PyAny>) -> PyResult<Vec<Value>> {
if let Ok(values) = any.downcast::<PyList>() {
values.iter().map(|v| extract_value(&v)).collect()
} else {
Ok(vec![extract_value(any)?])
}
}
fn extract_value_single_or_list_for_type(
any: &Bound<PyAny>,
field_type: &tv::schema::FieldType,
field_name: &str,
) -> PyResult<Vec<Value>> {
// Check if a numeric fast field supports multivalues.
if let Ok(values) = any.downcast::<PyList>() {
// Process an array of integers as a single entry if it is a bytes field.
if field_type.value_type() == tv::schema::Type::Bytes
&& values
.get_item(0)
.map(|v| v.is_instance_of::<PyInt>())
.unwrap_or(false)
{
return Ok(vec![extract_value_for_type(
values,
field_type.value_type(),
field_name,
)?]);
}
values
.iter()
.map(|any| {
extract_value_for_type(
&any,
field_type.value_type(),
field_name,
)
})
.collect()
} else {
Ok(vec![extract_value_for_type(
any,
field_type.value_type(),
field_name,
)?])
}
}
fn object_to_py(
py: Python,
obj: &BTreeMap<String, Value>,
) -> PyResult<PyObject> {
let dict = PyDict::new_bound(py);
for (k, v) in obj.iter() {
dict.set_item(k, value_to_py(py, v)?)?;
}
Ok(dict.into())
}
fn value_to_py(py: Python, value: &Value) -> PyResult<PyObject> {
Ok(match value {
Value::Null => py.None(),
Value::Str(text) => text.into_py(py),
Value::U64(num) => (*num).into_py(py),
Value::I64(num) => (*num).into_py(py),
Value::F64(num) => (*num).into_py(py),
Value::Bytes(b) => b.to_object(py),
Value::PreTokStr(_pretoken) => {
// TODO implement me
unimplemented!();
}
Value::Date(d) => {
let utc = d.into_utc();
PyDateTime::new_bound(
py,
utc.year(),
utc.month() as u8,
utc.day(),
utc.hour(),
utc.minute(),
utc.second(),
utc.microsecond(),
None,
)?
.into_py(py)
}
Value::Facet(f) => Facet { inner: f.clone() }.into_py(py),
Value::Array(_arr) => {
// TODO implement me
unimplemented!();
}
Value::Object(obj) => object_to_py(py, obj)?,
Value::Bool(b) => b.into_py(py),
Value::IpAddr(i) => (*i).to_string().into_py(py),
})
}
fn value_to_string(value: &Value) -> String {
match value {
Value::Null => format!("{:?}", value),
Value::Str(text) => text.clone(),
Value::U64(num) => format!("{num}"),
Value::I64(num) => format!("{num}"),
Value::F64(num) => format!("{num}"),
Value::Bytes(bytes) => format!("{bytes:?}"),
Value::Date(d) => format!("{d:?}"),
Value::Facet(facet) => facet.to_string(),
Value::PreTokStr(_pretok) => {
// TODO implement me
unimplemented!();
}
Value::Array(arr) => {
let inner: Vec<_> = arr.iter().map(value_to_string).collect();
format!("{inner:?}")
}
Value::Object(json_object) => {
serde_json::to_string(&json_object).unwrap()
}
Value::Bool(b) => format!("{b}"),
Value::IpAddr(i) => format!("{}", *i),
}
}
/// Serializes a [`tv::DateTime`] object.
///
/// Since tantivy stores it as a single `i64` nanosecond timestamp, it is serialized and
/// deserialized as one.
fn serialize_datetime<S: Serializer>(
dt: &tv::DateTime,
serializer: S,
) -> Result<S::Ok, S::Error> {
dt.into_timestamp_nanos().serialize(serializer)
}
/// Deserializes a [`tv::DateTime`] object.
///
/// Since tantivy stores it as a single `i64` nanosecond timestamp, it is serialized and
/// deserialized as one.
fn deserialize_datetime<'de, D>(
deserializer: D,
) -> Result<tv::DateTime, D::Error>
where
D: Deserializer<'de>,
{
i64::deserialize(deserializer).map(tv::DateTime::from_timestamp_nanos)
}
/// An equivalent type to [`tantivy::schema::Value`], but unlike the tantivy crate's serialization
/// implementation, it uses tagging in its serialization and deserialization to differentiate
/// between different integer types.
///
/// [`BorrowedSerdeValue`] is often used for the serialization path, as owning the data is not
/// necessary for serialization.
#[derive(Deserialize, Serialize)]
enum SerdeValue {
/// Null
Null,
/// The str type is used for any text information.
Str(String),
/// Pre-tokenized str type,
PreTokStr(tv::tokenizer::PreTokenizedString),
/// Unsigned 64-bits Integer `u64`
U64(u64),
/// Signed 64-bits Integer `i64`
I64(i64),
/// 64-bits Float `f64`
F64(f64),
/// Bool value
Bool(bool),
#[serde(
deserialize_with = "deserialize_datetime",
serialize_with = "serialize_datetime"
)]
/// Date/time with microseconds precision
Date(tv::DateTime),
/// Facet
Facet(tv::schema::Facet),
/// Arbitrarily sized byte array
Bytes(Vec<u8>),
/// Array
Array(Vec<Value>),
/// Object value.
Object(BTreeMap<String, Value>),
/// IpV6 Address. Internally there is no IpV4, it needs to be converted to `Ipv6Addr`.
IpAddr(Ipv6Addr),
}
impl From<SerdeValue> for Value {
fn from(value: SerdeValue) -> Self {
match value {
SerdeValue::Null => Self::Null,
SerdeValue::Str(v) => Self::Str(v),
SerdeValue::PreTokStr(v) => Self::PreTokStr(v),
SerdeValue::U64(v) => Self::U64(v),
SerdeValue::I64(v) => Self::I64(v),
SerdeValue::F64(v) => Self::F64(v),
SerdeValue::Date(v) => Self::Date(v),
SerdeValue::Facet(v) => Self::Facet(v),
SerdeValue::Bytes(v) => Self::Bytes(v),
SerdeValue::Array(v) => Self::Array(v),
SerdeValue::Object(v) => Self::Object(v),
SerdeValue::Bool(v) => Self::Bool(v),
SerdeValue::IpAddr(v) => Self::IpAddr(v),
}
}
}
impl From<Value> for SerdeValue {
fn from(value: Value) -> Self {
match value {
Value::Null => Self::Null,
Value::Str(v) => Self::Str(v),
Value::PreTokStr(v) => Self::PreTokStr(v),
Value::U64(v) => Self::U64(v),
Value::I64(v) => Self::I64(v),
Value::F64(v) => Self::F64(v),
Value::Date(v) => Self::Date(v),
Value::Facet(v) => Self::Facet(v),
Value::Bytes(v) => Self::Bytes(v),
Value::Array(v) => Self::Array(v),
Value::Object(v) => Self::Object(v),
Value::Bool(v) => Self::Bool(v),
Value::IpAddr(v) => Self::IpAddr(v),
}
}
}
/// A non-owning version of [`SerdeValue`]. This is used in serialization to avoid unnecessary
/// cloning.
#[derive(Serialize)]
enum BorrowedSerdeValue<'a> {
/// Null
Null,
/// The str type is used for any text information.
Str(&'a str),
/// Pre-tokenized str type,
PreTokStr(&'a tv::tokenizer::PreTokenizedString),
/// Unsigned 64-bits Integer `u64`
U64(&'a u64),
/// Signed 64-bits Integer `i64`
I64(&'a i64),
/// 64-bits Float `f64`
F64(&'a f64),
/// Bool value
Bool(&'a bool),
#[serde(serialize_with = "serialize_datetime")]
/// Date/time with microseconds precision
Date(&'a tv::DateTime),
/// Facet
Facet(&'a tv::schema::Facet),
/// Arbitrarily sized byte array
Bytes(&'a [u8]),
/// Array
Array(&'a Vec<Value>),
/// Json object value.
Object(&'a BTreeMap<String, Value>),
/// IpV6 Address. Internally there is no IpV4, it needs to be converted to `Ipv6Addr`.
IpAddr(&'a Ipv6Addr),
}
impl<'a> From<&'a Value> for BorrowedSerdeValue<'a> {
fn from(value: &'a Value) -> Self {
match value {
Value::Null => Self::Null,
Value::Str(v) => Self::Str(v),
Value::PreTokStr(v) => Self::PreTokStr(v),
Value::U64(v) => Self::U64(v),
Value::I64(v) => Self::I64(v),
Value::F64(v) => Self::F64(v),
Value::Date(v) => Self::Date(v),
Value::Facet(v) => Self::Facet(v),
Value::Bytes(v) => Self::Bytes(v),
Value::Array(v) => Self::Array(v),
Value::Object(v) => Self::Object(v),
Value::Bool(v) => Self::Bool(v),
Value::IpAddr(v) => Self::IpAddr(v),
}
}
}
/// Tantivy's Document is the object that can be indexed and then searched for.
///
/// Documents are fundamentally a collection of unordered tuples
/// (field_name, value). In this list, one field may appear more than once.
///
/// Example:
/// >>> doc = tantivy.Document()
/// >>> doc.add_text("title", "The Old Man and the Sea")
/// >>> doc.add_text("body", ("He was an old man who fished alone in a "
/// ... "skiff in the Gulf Stream and he had gone "
/// ... "eighty-four days now without taking a fish."))
/// >>> doc
/// Document(body=[He was an ],title=[The Old Ma])
///
/// For simplicity, it is also possible to build a `Document` by passing the field
/// values directly as constructor arguments.
///
/// Example:
/// >>> doc = tantivy.Document(title=["The Old Man and the Sea"], body=["..."])
///
/// As syntactic sugar, tantivy also allows the user to pass a single values
/// if there is only one. In other words, the following is also legal.
///
/// Example:
/// >>> doc = tantivy.Document(title="The Old Man and the Sea", body="...")
///
/// For numeric fields, the [`Document`] constructor does not have any
/// information about the type and will try to guess the type.
/// Therefore, it is recommended to use the [`Document::from_dict()`],
/// [`Document::extract()`], or `Document::add_*()` functions to provide
/// explicit type information.
///
/// Example:
/// >>> schema = (
/// ... SchemaBuilder()
/// ... .add_unsigned_field("unsigned")
/// ... .add_integer_field("signed")
/// ... .add_float_field("float")
/// ... .build()
/// ... )
/// >>> doc = tantivy.Document.from_dict(
/// ... {"unsigned": 1000, "signed": -5, "float": 0.4},
/// ... schema,
/// ... )
#[pyclass(module = "tantivy.tantivy")]
#[derive(Clone, Default, PartialEq)]
pub(crate) struct Document {
pub(crate) field_values: BTreeMap<String, Vec<Value>>,
}
impl fmt::Debug for Document {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let doc_str = self
.field_values
.iter()
.map(|(field_name, field_values)| {
let values_str: String = field_values
.iter()
.map(value_to_string)
.join(",")
.chars()
.take(10)
.collect();
format!("{field_name}=[{values_str}]")
})
.join(",");
write!(f, "Document({doc_str})")
}
}
impl Serialize for Document {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let mut map =
serializer.serialize_map(Some(self.field_values.len()))?;
for (k, v) in &self.field_values {
let ser_v: Vec<_> =
v.iter().map(BorrowedSerdeValue::from).collect();
map.serialize_entry(&k, &ser_v)?;
}
map.end()
}
}
impl<'de> Deserialize<'de> for Document {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
BTreeMap::<String, Vec<SerdeValue>>::deserialize(deserializer).map(
|field_map| Document {
field_values: field_map
.into_iter()
.map(|(k, v)| {
let v: Vec<_> =
v.into_iter().map(Value::from).collect();
(k, v)
})
.collect(),
},
)
}
}
#[pymethods]
impl Document {
/// Creates a new document with optional fields from `**kwargs`.
///
/// Note that the types of numeric fields are unknown here. To
/// provide explicit type information, use the [`from_dict()`],
/// [`extend()`], or `add_<type>()` functions.
#[new]
#[pyo3(signature = (**kwargs))]
fn new(kwargs: Option<&Bound<PyDict>>) -> PyResult<Self> {
let mut document = Document::default();
if let Some(field_dict) = kwargs {
document.extend(field_dict, None)?;
}
Ok(document)
}
fn extend(
&mut self,
py_dict: &Bound<PyDict>,
schema: Option<&Schema>,
) -> PyResult<()> {
Document::extract_py_values_from_dict(
py_dict,
schema,
&mut self.field_values,
)
}
#[staticmethod]
fn from_dict(
py_dict: &Bound<PyDict>,
schema: Option<&Schema>,
) -> PyResult<Document> {
let mut field_values: BTreeMap<String, Vec<Value>> = BTreeMap::new();
Document::extract_py_values_from_dict(
py_dict,
schema,
&mut field_values,
)?;
Ok(Document { field_values })
}
/// Returns a dictionary with the different
/// field values.
///
/// In tantivy, `Document` can be hold multiple
/// values for a single field.
///
/// For this reason, the dictionary, will associate
/// a list of value for every field.
fn to_dict(&self, py: Python) -> PyResult<PyObject> {
let dict = PyDict::new_bound(py);
for (key, values) in &self.field_values {
let values_py: Vec<PyObject> = values
.iter()
.map(|v| value_to_py(py, v))
.collect::<PyResult<_>>()?;
dict.set_item(key, values_py)?;
}
Ok(dict.into())
}
/// Add a text value to the document.
///
/// Args:
/// field_name (str): The field name for which we are adding the text.
/// text (str): The text that will be added to the document.
fn add_text(&mut self, field_name: String, text: &str) {
self.add_value(field_name, text);
}
/// Add an unsigned integer value to the document.
///
/// Args:
/// field_name (str): The field name for which we are adding the unsigned integer.
/// value (int): The integer that will be added to the document.
fn add_unsigned(&mut self, field_name: String, value: u64) {
self.add_value(field_name, value);
}
/// Add a signed integer value to the document.
///
/// Args:
/// field_name (str): The field name for which we are adding the integer.
/// value (int): The integer that will be added to the document.
fn add_integer(&mut self, field_name: String, value: i64) {
self.add_value(field_name, value);
}
/// Add a float value to the document.
///
/// Args:
/// field_name (str): The field name for which we are adding the value.
/// value (f64): The float that will be added to the document.
fn add_float(&mut self, field_name: String, value: f64) {
self.add_value(field_name, value);
}
/// Add a boolean value to the document.
///
/// Args:
/// field_name (str): The field name for which we are adding the value.
/// value (bool): The boolean that will be added to the document.
fn add_boolean(&mut self, field_name: String, value: bool) {
self.add_value(field_name, value);
}
/// Add a date value to the document.
///
/// Args:
/// field_name (str): The field name for which we are adding the date.
/// value (datetime): The date that will be added to the document.
fn add_date(&mut self, field_name: String, value: &Bound<PyDateTime>) {
let datetime = Utc
.with_ymd_and_hms(
value.get_year(),
value.get_month().into(),
value.get_day().into(),
value.get_hour().into(),
value.get_minute().into(),
value.get_second().into(),
)
.single()
.unwrap();
self.add_value(
field_name,
tv::DateTime::from_timestamp_secs(datetime.timestamp()),
);
}
/// Add a facet value to the document.
/// Args:
/// field_name (str): The field name for which we are adding the facet.
/// value (Facet): The Facet that will be added to the document.
fn add_facet(&mut self, field_name: String, facet: &Facet) {
self.add_value(field_name, facet.inner.clone());
}
/// Add a bytes value to the document.
///
/// Args:
/// field_name (str): The field for which we are adding the bytes.
/// value (bytes): The bytes that will be added to the document.
fn add_bytes(&mut self, field_name: String, bytes: Vec<u8>) {
self.add_value(field_name, bytes);
}
/// Add a JSON value to the document.
///
/// Args:
/// field_name (str): The field for which we are adding the JSON.
/// value (str | Dict[str, Any]): The JSON object that will be added
/// to the document.
///
/// Raises a ValueError if the JSON is invalid.
fn add_json(
&mut self,
field_name: String,
value: &Bound<PyAny>,
) -> PyResult<()> {
type JsonMap = serde_json::Map<String, serde_json::Value>;
if let Ok(json_str) = value.extract::<&str>() {
let json_map: JsonMap =
serde_json::from_str(json_str).map_err(to_pyerr)?;
self.add_value(field_name, json_map);
Ok(())
} else if let Ok(json_map) =
pythonize::depythonize_bound::<JsonMap>(value.clone())
{
self.add_value(field_name, json_map);
Ok(())
} else {
Err(to_pyerr("Invalid JSON object. Expected valid JSON string or Dict[str, Any]."))
}
}
/// Add an IP address value to the document.
///
/// Args:
/// field_name (str): The field for which we are adding the IP address.
/// value (str): The IP address object that will be added
/// to the document.
///
/// Raises a ValueError if the IP address is invalid.
fn add_ip_addr(&mut self, field_name: String, value: &str) -> PyResult<()> {
let ip_addr = IpAddr::from_str(value).map_err(to_pyerr)?;
match ip_addr {
IpAddr::V4(addr) => {
self.add_value(field_name, addr.to_ipv6_mapped())
}
IpAddr::V6(addr) => self.add_value(field_name, addr),
}
Ok(())
}
/// Returns the number of added fields that have been added to the document
#[getter]
fn num_fields(&self) -> usize {
self.field_values.len()
}
/// True if the document is empty, False otherwise.
#[getter]
fn is_empty(&self) -> bool {
self.field_values.is_empty()
}
/// Get the first value associated with the given field.
///
/// Args:
/// field (Field): The field for which we would like to get the value.
///
/// Returns the value if one is found, otherwise None.
/// The type of the value depends on the field.
fn get_first(
&self,
py: Python,
fieldname: &str,
) -> PyResult<Option<PyObject>> {
if let Some(value) = self.iter_values_for_field(fieldname).next() {
let py_value = value_to_py(py, value)?;
Ok(Some(py_value))
} else {
Ok(None)
}
}
/// Get the all values associated with the given field.
///
/// Args:
/// field (Field): The field for which we would like to get the values.
///
/// Returns a list of values.
/// The type of the value depends on the field.
fn get_all(&self, py: Python, field_name: &str) -> PyResult<Vec<PyObject>> {
self.iter_values_for_field(field_name)
.map(|value| value_to_py(py, value))
.collect::<PyResult<Vec<_>>>()
}
fn __getitem__(&self, field_name: &str) -> PyResult<Vec<PyObject>> {
Python::with_gil(|py| -> PyResult<Vec<PyObject>> {
self.get_all(py, field_name)
})
}
fn __repr__(&self) -> PyResult<String> {
Ok(format!("{self:?}"))
}
fn __copy__(&self) -> Self {
self.clone()
}
fn __deepcopy__(&self, _memo: &Bound<PyDict>) -> Self {
self.clone()
}
fn __richcmp__(
&self,
other: &Self,
op: CompareOp,
py: Python<'_>,
) -> PyObject {
match op {
CompareOp::Eq => (self == other).into_py(py),
CompareOp::Ne => (self != other).into_py(py),
_ => py.NotImplemented(),
}
}
#[staticmethod]
fn _internal_from_pythonized(serialized: &Bound<PyAny>) -> PyResult<Self> {
pythonize::depythonize_bound(serialized.clone()).map_err(to_pyerr)
}
fn __reduce__<'a>(
slf: PyRef<'a, Self>,
py: Python<'a>,
) -> PyResult<Bound<'a, PyTuple>> {
let serialized = pythonize::pythonize(py, &*slf).map_err(to_pyerr)?;
Ok(PyTuple::new_bound(
py,
[
slf.into_py(py).getattr(py, "_internal_from_pythonized")?,
PyTuple::new_bound(py, [serialized]).to_object(py),
],
))
}
}
impl Document {
fn add_value<T>(&mut self, field_name: String, value: T)
where
Value: From<T>,
{
self.field_values
.entry(field_name)
.or_default()
.push(Value::from(value));
}
fn extract_py_values_from_dict(
py_dict: &Bound<PyDict>,
schema: Option<&Schema>,
out_field_values: &mut BTreeMap<String, Vec<Value>>,
) -> PyResult<()> {
// TODO: Reserve when https://github.com/rust-lang/rust/issues/72631 is stable.
// out_field_values.reserve(py_dict.len());
for key_value_any in py_dict.items() {
if let Ok(key_value) = key_value_any.downcast::<PyTuple>() {
if key_value.len() != 2 {
continue;
}
let key = key_value.get_item(0)?.extract::<String>()?;
let field_type = if let Some(schema) = schema {
let field_type = schema
.inner
.get_field(key.as_str())
.map(|field| {
schema.inner.get_field_entry(field).field_type()
})
.ok();
if let Some(field_type) = field_type {
// A field type was found, so validate it after the values are extracted.
Some(field_type)
} else {
// The field does not exist in the schema, so skip over it.
continue;
}
} else {
// No schema was provided, so do not validate anything.
None
};
let value_list = if let Some(field_type) = field_type {
extract_value_single_or_list_for_type(
&key_value.get_item(1)?,
field_type,
key.as_str(),
)?
} else {
extract_value_single_or_list(&key_value.get_item(1)?)?
};
out_field_values.insert(key, value_list);
}
}
Ok(())
}
pub fn iter_values_for_field<'a>(
&'a self,
field: &str,
) -> impl Iterator<Item = &'a Value> + 'a {
self.field_values
.get(field)
.into_iter()
.flat_map(|values| values.iter())
}
}