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use super::*;
use crate::common::BinarySerializable;
use crate::common::VInt;
use crate::tokenizer::PreTokenizedString;
use crate::DateTime;
use std::io::{self, Read, Write};
use std::mem;
#[derive(Clone, Debug, serde::Serialize, serde::Deserialize, Default)]
pub struct Document {
field_values: Vec<FieldValue>,
}
impl From<Vec<FieldValue>> for Document {
fn from(field_values: Vec<FieldValue>) -> Self {
Document { field_values }
}
}
impl PartialEq for Document {
fn eq(&self, other: &Document) -> bool {
let mut self_field_values: Vec<&_> = self.field_values.iter().collect();
let mut other_field_values: Vec<&_> = other.field_values.iter().collect();
self_field_values.sort();
other_field_values.sort();
self_field_values.eq(&other_field_values)
}
}
impl Eq for Document {}
impl Document {
pub fn new() -> Document {
Document::default()
}
pub fn len(&self) -> usize {
self.field_values.len()
}
pub fn is_empty(&self) -> bool {
self.field_values.is_empty()
}
pub fn filter_fields<P: Fn(Field) -> bool>(&mut self, predicate: P) {
self.field_values
.retain(|field_value| predicate(field_value.field()));
}
pub fn add_facet<F>(&mut self, field: Field, path: F)
where
Facet: From<F>,
{
let facet = Facet::from(path);
let value = Value::Facet(facet);
self.add(FieldValue::new(field, value));
}
pub fn add_text<S: ToString>(&mut self, field: Field, text: S) {
self.add(FieldValue::new(field, Value::Str(text.to_string())));
}
pub fn add_pre_tokenized_text(
&mut self,
field: Field,
pre_tokenized_text: &PreTokenizedString,
) {
let value = Value::PreTokStr(pre_tokenized_text.clone());
self.add(FieldValue::new(field, value));
}
pub fn add_u64(&mut self, field: Field, value: u64) {
self.add(FieldValue::new(field, Value::U64(value)));
}
pub fn add_i64(&mut self, field: Field, value: i64) {
self.add(FieldValue::new(field, Value::I64(value)));
}
pub fn add_f64(&mut self, field: Field, value: f64) {
self.add(FieldValue::new(field, Value::F64(value)));
}
pub fn add_date(&mut self, field: Field, value: &DateTime) {
self.add(FieldValue::new(field, Value::Date(*value)));
}
pub fn add_bytes<T: Into<Vec<u8>>>(&mut self, field: Field, value: T) {
self.add(FieldValue::new(field, Value::Bytes(value.into())))
}
pub fn add(&mut self, field_value: FieldValue) {
self.field_values.push(field_value);
}
pub fn field_values(&self) -> &[FieldValue] {
&self.field_values
}
pub fn get_sorted_field_values(&self) -> Vec<(Field, Vec<&FieldValue>)> {
let mut field_values: Vec<&FieldValue> = self.field_values().iter().collect();
field_values.sort_by_key(|field_value| field_value.field());
let mut grouped_field_values = vec![];
let mut current_field;
let mut current_group;
let mut field_values_it = field_values.into_iter();
if let Some(field_value) = field_values_it.next() {
current_field = field_value.field();
current_group = vec![field_value]
} else {
return grouped_field_values;
}
for field_value in field_values_it {
if field_value.field() == current_field {
current_group.push(field_value);
} else {
grouped_field_values.push((
current_field,
mem::replace(&mut current_group, vec![field_value]),
));
current_field = field_value.field();
}
}
grouped_field_values.push((current_field, current_group));
grouped_field_values
}
pub fn get_all(&self, field: Field) -> impl Iterator<Item = &Value> {
self.field_values
.iter()
.filter(move |field_value| field_value.field() == field)
.map(FieldValue::value)
}
pub fn get_first(&self, field: Field) -> Option<&Value> {
self.get_all(field).next()
}
pub fn prepare_for_store(&mut self) {
for field_value in &mut self.field_values {
if let Value::PreTokStr(pre_tokenized_text) = field_value.value() {
*field_value = FieldValue::new(
field_value.field(),
Value::Str(pre_tokenized_text.text.clone()),
);
}
}
}
}
impl BinarySerializable for Document {
fn serialize<W: Write>(&self, writer: &mut W) -> io::Result<()> {
let field_values = self.field_values();
VInt(field_values.len() as u64).serialize(writer)?;
for field_value in field_values {
field_value.serialize(writer)?;
}
Ok(())
}
fn deserialize<R: Read>(reader: &mut R) -> io::Result<Self> {
let num_field_values = VInt::deserialize(reader)?.val() as usize;
let field_values = (0..num_field_values)
.map(|_| FieldValue::deserialize(reader))
.collect::<io::Result<Vec<FieldValue>>>()?;
Ok(Document::from(field_values))
}
}
#[cfg(test)]
mod tests {
use crate::schema::*;
use crate::tokenizer::{PreTokenizedString, Token};
#[test]
fn test_doc() {
let mut schema_builder = Schema::builder();
let text_field = schema_builder.add_text_field("title", TEXT);
let mut doc = Document::default();
doc.add_text(text_field, "My title");
assert_eq!(doc.field_values().len(), 1);
}
#[test]
fn test_prepare_for_store() {
let mut schema_builder = Schema::builder();
let text_field = schema_builder.add_text_field("title", TEXT);
let mut doc = Document::default();
let pre_tokenized_text = PreTokenizedString {
text: String::from("A"),
tokens: vec![Token {
offset_from: 0,
offset_to: 1,
position: 0,
text: String::from("A"),
position_length: 1,
}],
};
doc.add_pre_tokenized_text(text_field, &pre_tokenized_text);
doc.add_text(text_field, "title");
doc.prepare_for_store();
assert_eq!(doc.field_values().len(), 2);
match doc.field_values()[0].value() {
Value::Str(ref text) => assert_eq!(text, "A"),
_ => panic!("Incorrect variant of Value"),
}
match doc.field_values()[1].value() {
Value::Str(ref text) => assert_eq!(text, "title"),
_ => panic!("Incorrect variant of Value"),
}
}
}