/*
 * Copyright 2014, Stratio.
 *
 * Licensed 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.
 */
package com.stratio.cassandra.index.query;

import com.google.common.base.Objects;
import com.stratio.cassandra.index.schema.Schema;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.codehaus.jackson.annotate.JsonCreator;
import org.codehaus.jackson.annotate.JsonProperty;

/**
 * A {@link com.stratio.cassandra.index.query.Condition} implementation that matches all documents.
 *
 * @author Andres de la Pena <adelapena@stratio.com>
 */
public class MatchAllCondition extends SingleFieldCondition {

    /**
     * Constructor without field arguments.
     *
     * @param boost The boost for this query clause. Documents matching this clause will (in addition to the normal
     *              weightings) have their score multiplied by {@code boost}. If {@code null}, then {@link
     *              #DEFAULT_BOOST} is used as default.
     */
    @JsonCreator
    public MatchAllCondition(@JsonProperty("boost") Float boost) {
        super(boost);
    }

    /** {@inheritDoc} */
    @Override
    public Query query(Schema schema) {
        Query query = new MatchAllDocsQuery();
        query.setBoost(boost);
        return query;
    }

    /** {@inheritDoc} */
    @Override
    public String toString() {
        return Objects.toStringHelper(this).toString();
    }
}