/*
* Licensed to STRATIO (C) under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. The STRATIO (C) 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.
*/
package com.stratio.cassandra.lucene.search.condition;
import com.stratio.cassandra.lucene.IndexException;
import com.stratio.cassandra.lucene.schema.Schema;
import com.stratio.cassandra.lucene.schema.mapping.Mapper;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.search.Query;
/**
* An abstract {@link Condition} using a specific {@link Mapper}.
*
* Known subclasses are: <ul> <li> {@link BitemporalCondition} <li> {@link DateRangeCondition} <li> {@link
* GeoDistanceCondition} <li> {@link GeoBBoxCondition} </ul>
*
* @param <T> The specific {@link Mapper} type.
* @author Andres de la Pena {@literal <adelapena@stratio.com>}
*/
public abstract class SingleMapperCondition<T extends Mapper> extends SingleFieldCondition {
/** The type of the {@link Mapper}. */
protected final Class<? extends T> type;
/**
* Constructor using the boost and the name of the mapper.
*
* @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} will be
* used as default
* @param field the name of the field to be matched
* @param type the type of the {@link Mapper}
*/
protected SingleMapperCondition(Float boost, String field, Class<? extends T> type) {
super(boost, field);
this.type = type;
}
/** {@inheritDoc} */
@Override
@SuppressWarnings("unchecked")
public Query query(Schema schema) {
Mapper mapper = schema.getMapper(field);
if (mapper == null) {
throw new IndexException("No mapper found for field '%s'", field);
} else if (!type.isAssignableFrom(mapper.getClass())) {
throw new IndexException("Field '%s' requires a mapper of type '%s' but found '%s'", field, type, mapper);
}
return query((T) mapper, schema.getAnalyzer());
}
/**
* Returns the Lucene {@link Query} representation of this condition.
*
* @param mapper The {@link Mapper} to be used.
* @param analyzer The {@link Schema} {@link Analyzer}.
* @return The Lucene {@link Query} representation of this condition.
*/
@SuppressWarnings("UnusedParameters")
public abstract Query query(T mapper, Analyzer analyzer);
}