/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

parcel Lucy;


/** Query which matches individual terms.
 *
 * TermQuery is a subclass of L<Lucy::Search::Query> for matching
 * individual terms in a specific field.
 */

class Lucy::Search::TermQuery inherits Lucy::Search::Query
    : dumpable {

    CharBuf *field;
    Obj     *term;

    inert incremented TermQuery*
    new(const CharBuf *field, const Obj *term);

    /**
     * @param field Field name.
     * @param term Term text.
     */
    public inert TermQuery*
    init(TermQuery *self, const CharBuf *field, const Obj *term);

    /** Accessor for object's <code>field</code> member.
     */
    public CharBuf*
    Get_Field(TermQuery *self);

    /** Accessor for object's <code>term</code> member.
     */
    public Obj*
    Get_Term(TermQuery *self);

    public incremented Compiler*
    Make_Compiler(TermQuery *self, Searcher *searcher, float boost,
                  bool_t subordinate = false);

    public incremented CharBuf*
    To_String(TermQuery *self);

    public void
    Serialize(TermQuery *self, OutStream *outstream);

    public incremented TermQuery*
    Deserialize(TermQuery *self, InStream *instream);

    public bool_t
    Equals(TermQuery *self, Obj *other);

    public void
    Destroy(TermQuery *self);
}

class Lucy::Search::TermCompiler inherits Lucy::Search::Compiler {
    float idf;
    float raw_weight;
    float query_norm_factor;
    float normalized_weight;

    inert incremented TermCompiler*
    new(Query *parent, Searcher *searcher, float boost);

    inert TermCompiler*
    init(TermCompiler *self, Query *parent, Searcher *searcher,
         float boost);

    public incremented nullable Matcher*
    Make_Matcher(TermCompiler *self, SegReader *reader, bool_t need_score);

    public float
    Get_Weight(TermCompiler *self);

    public float
    Sum_Of_Squared_Weights(TermCompiler *self);

    public void
    Apply_Norm_Factor(TermCompiler *self, float factor);

    public incremented VArray*
    Highlight_Spans(TermCompiler *self, Searcher *searcher,
                    DocVector *doc_vec, const CharBuf *field);

    public bool_t
    Equals(TermCompiler *self, Obj *other);

    public void
    Serialize(TermCompiler *self, OutStream *outstream);

    public incremented TermCompiler*
    Deserialize(TermCompiler *self, InStream *instream);
}