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Code Issues Releases Wiki Activity

Introduce a way to filter documents with a basic syntax

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This commit is contained in:
Clément Renault 2019-10-09 14:20:37 +02:00
parent 663714bb6d
commit 683b6afbfb
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4 changed files with 50 additions and 10 deletions
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30
meilidb-core/examples/from_file.rs
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@ -53,6 +53,11 @@ struct SearchCommand {
#[structopt(short = "C", long, default_value = "35")]
char_context: usize,
/// A filter string that can be `!adult` or `adult` to
/// filter documents on this specfied field
#[structopt(short, long)]
filter: Option<String>,
/// Fields that must be displayed.
displayed_fields: Vec<String>,
}
@ -269,8 +274,29 @@ fn search_command(command: SearchCommand, database: Database) -> Result<(), Box<
Ok(query) => {
let start_total = Instant::now();
let builder = index.query_builder();
let documents = builder.query(&reader, &query, 0..command.number_results)?;
let documents = match command.filter {
Some(ref filter) => {
let filter = filter.as_str();
let (positive, filter) = if filter.chars().next() == Some('!') {
(false, &filter[1..])
} else {
(true, filter)
};
let attr = schema.attribute(&filter).expect("Could not find filtered attribute");
let builder = index.query_builder();
let builder = builder.with_filter(|document_id| {
let string: String = index.document_attribute(&reader, document_id, attr).unwrap().unwrap();
(string == "true") == positive
});
builder.query(&reader, &query, 0..command.number_results)?
},
None => {
let builder = index.query_builder();
builder.query(&reader, &query, 0..command.number_results)?
}
};
let mut retrieve_duration = Duration::default();