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</pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::postings::json_postings_writer::JsonPostingsWriter;
<span class="kw">use </span><span class="kw">crate</span>::postings::postings_writer::SpecializedPostingsWriter;
<span class="kw">use </span><span class="kw">crate</span>::postings::recorder::{DocIdRecorder, TermFrequencyRecorder, TfAndPositionRecorder};
<span class="kw">use </span><span class="kw">crate</span>::postings::PostingsWriter;
<span class="kw">use </span><span class="kw">crate</span>::schema::{Field, FieldEntry, FieldType, IndexRecordOption, Schema};
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>PerFieldPostingsWriter {
per_field_postings_writers: Vec&lt;Box&lt;<span class="kw">dyn </span>PostingsWriter&gt;&gt;,
}
<span class="kw">impl </span>PerFieldPostingsWriter {
<span class="kw">pub fn </span>for_schema(schema: <span class="kw-2">&amp;</span>Schema) -&gt; <span class="self">Self </span>{
<span class="kw">let </span>per_field_postings_writers = schema
.fields()
.map(|(<span class="kw">_</span>, field_entry)| posting_writer_from_field_entry(field_entry))
.collect();
PerFieldPostingsWriter {
per_field_postings_writers,
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get_for_field(<span class="kw-2">&amp;</span><span class="self">self</span>, field: Field) -&gt; <span class="kw-2">&amp;</span><span class="kw">dyn </span>PostingsWriter {
<span class="self">self</span>.per_field_postings_writers[field.field_id() <span class="kw">as </span>usize].as_ref()
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get_for_field_mut(<span class="kw-2">&amp;mut </span><span class="self">self</span>, field: Field) -&gt; <span class="kw-2">&amp;mut </span><span class="kw">dyn </span>PostingsWriter {
<span class="self">self</span>.per_field_postings_writers[field.field_id() <span class="kw">as </span>usize].as_mut()
}
}
<span class="kw">fn </span>posting_writer_from_field_entry(field_entry: <span class="kw-2">&amp;</span>FieldEntry) -&gt; Box&lt;<span class="kw">dyn </span>PostingsWriter&gt; {
<span class="kw">match </span><span class="kw-2">*</span>field_entry.field_type() {
FieldType::Str(<span class="kw-2">ref </span>text_options) =&gt; text_options
.get_indexing_options()
.map(|indexing_options| <span class="kw">match </span>indexing_options.index_option() {
IndexRecordOption::Basic =&gt; {
SpecializedPostingsWriter::&lt;DocIdRecorder&gt;::default().into()
}
IndexRecordOption::WithFreqs =&gt; {
SpecializedPostingsWriter::&lt;TermFrequencyRecorder&gt;::default().into()
}
IndexRecordOption::WithFreqsAndPositions =&gt; {
SpecializedPostingsWriter::&lt;TfAndPositionRecorder&gt;::default().into()
}
})
.unwrap_or_else(|| SpecializedPostingsWriter::&lt;DocIdRecorder&gt;::default().into()),
FieldType::U64(<span class="kw">_</span>)
| FieldType::I64(<span class="kw">_</span>)
| FieldType::F64(<span class="kw">_</span>)
| FieldType::Bool(<span class="kw">_</span>)
| FieldType::Date(<span class="kw">_</span>)
| FieldType::Bytes(<span class="kw">_</span>)
| FieldType::IpAddr(<span class="kw">_</span>)
| FieldType::Facet(<span class="kw">_</span>) =&gt; Box::new(SpecializedPostingsWriter::&lt;DocIdRecorder&gt;::default()),
FieldType::JsonObject(<span class="kw-2">ref </span>json_object_options) =&gt; {
<span class="kw">if let </span><span class="prelude-val">Some</span>(text_indexing_option) = json_object_options.get_text_indexing_options() {
<span class="kw">match </span>text_indexing_option.index_option() {
IndexRecordOption::Basic =&gt; {
JsonPostingsWriter::&lt;DocIdRecorder&gt;::default().into()
}
IndexRecordOption::WithFreqs =&gt; {
JsonPostingsWriter::&lt;TermFrequencyRecorder&gt;::default().into()
}
IndexRecordOption::WithFreqsAndPositions =&gt; {
JsonPostingsWriter::&lt;TfAndPositionRecorder&gt;::default().into()
}
}
} <span class="kw">else </span>{
JsonPostingsWriter::&lt;DocIdRecorder&gt;::default().into()
}
}
}
}
</code></pre></div>
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