core/Lucy/Search/RangeQuery.cfh

/* 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;

/** Match a range of values.
 *
 * RangeQuery matches documents where the value for a particular field falls
 * within a given range.
 */

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

    CharBuf  *field;
    Obj      *lower_term;
    Obj      *upper_term;
    bool_t    include_lower;
    bool_t    include_upper;

    inert incremented RangeQuery*
    new(const CharBuf *field, Obj *lower_term = NULL, Obj *upper_term = NULL,
        bool_t include_lower = true, bool_t include_upper = true);

    /** Takes 5 parameters; <code>field</code> is required, as
     * is at least one of either <code>lower_term</code> or
     * <code>upper_term</code>.
     *
     * @param field The name of a <code>sortable</code> field.
     * @param lower_term Lower delimiter.  If not supplied, all values
     * less than <code>upper_term</code> will pass.
     * @param upper_term Upper delimiter.  If not supplied, all values greater
     * than <code>lower_term</code> will pass.
     * @param include_lower Indicates whether docs which match
     * <code>lower_term</code> should be included in the results.
     * @param include_upper Indicates whether docs which match
     * <code>upper_term</code> should be included in the results.
     */
    public inert RangeQuery*
    init(RangeQuery *self, const CharBuf *field,
         Obj *lower_term = NULL, Obj *upper_term = NULL,
         bool_t include_lower = true, bool_t include_upper = true);

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

    public incremented CharBuf*
    To_String(RangeQuery *self);

    public incremented RangeCompiler*
    Make_Compiler(RangeQuery *self, Searcher *searcher, float boost);

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

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

    public void
    Destroy(RangeQuery *self);
}

class Lucy::Search::RangeCompiler inherits Lucy::Search::Compiler {

    inert incremented RangeCompiler*
    new(RangeQuery *parent, Searcher *searcher, float boost);

    inert RangeCompiler*
    init(RangeCompiler *self, RangeQuery *parent, Searcher *searcher,
         float boost);

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

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