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/*
* 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.mapping.SingleColumnMapper;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermRangeQuery;
/**
* A {@link Condition} implementation that matches a field within an range of values.
*
* @author Andres de la Pena {@literal }
*/
public class RangeCondition extends SingleColumnCondition {
/** The default include lower option. */
public static final boolean DEFAULT_INCLUDE_LOWER = false;
/** The default include upper option. */
public static final boolean DEFAULT_INCLUDE_UPPER = false;
/** The lower accepted value. Maybe null meaning no lower limit. */
public final Object lower;
/** The upper accepted value. Maybe null meaning no upper limit. */
public final Object upper;
/** If the lower value must be included if not null. */
public final boolean includeLower;
/** If the upper value must be included if not null. */
public final boolean includeUpper;
/**
* Constructs a query selecting all fields greater/equal than {@code lowerValue} but less/equal than {@code
* upperValue}.
*
* If an endpoint is null, it is said to be "open". Either or both endpoints may be open. Open endpoints may not be
* exclusive (you can't select all but the first or last term without explicitly specifying the term to exclude.)
*
* @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.
* @param field The name of the field to be matched.
* @param lowerValue The lower accepted value. Maybe {@code null} meaning no lower limit.
* @param upperValue The upper accepted value. Maybe {@code null} meaning no upper limit.
* @param includeLower if {@code true}, the {@code lowerValue} is included in the range.
* @param includeUpper if {@code true}, the {@code upperValue} is included in the range.
*/
public RangeCondition(Float boost,
String field,
Object lowerValue,
Object upperValue,
Boolean includeLower,
Boolean includeUpper) {
super(boost, field);
this.lower = lowerValue;
this.upper = upperValue;
this.includeLower = includeLower == null ? DEFAULT_INCLUDE_LOWER : includeLower;
this.includeUpper = includeUpper == null ? DEFAULT_INCLUDE_UPPER : includeUpper;
}
/**
* {@inheritDoc}
*/
@Override
public Query query(SingleColumnMapper mapper, Analyzer analyzer) {
Class clazz = mapper.base;
Query query;
if (clazz == String.class) {
String start = (String) mapper.base(field, lower);
String stop = (String) mapper.base(field, upper);
query = TermRangeQuery.newStringRange(field, start, stop, includeLower, includeUpper);
} else if (clazz == Integer.class) {
Integer start = (Integer) mapper.base(field, lower);
Integer stop = (Integer) mapper.base(field, upper);
query = NumericRangeQuery.newIntRange(field, start, stop, includeLower, includeUpper);
} else if (clazz == Long.class) {
Long start = (Long) mapper.base(field, lower);
Long stop = (Long) mapper.base(field, upper);
query = NumericRangeQuery.newLongRange(field, start, stop, includeLower, includeUpper);
} else if (clazz == Float.class) {
Float start = (Float) mapper.base(field, lower);
Float stop = (Float) mapper.base(field, upper);
query = NumericRangeQuery.newFloatRange(field, start, stop, includeLower, includeUpper);
} else if (clazz == Double.class) {
Double start = (Double) mapper.base(field, lower);
Double stop = (Double) mapper.base(field, upper);
query = NumericRangeQuery.newDoubleRange(field, start, stop, includeLower, includeUpper);
} else {
throw new IndexException("Range queries are not supported by mapper '%s'", mapper);
}
query.setBoost(boost);
return query;
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return toStringHelper(this).add("lower", lower)
.add("upper", upper)
.add("includeLower", includeLower)
.add("includeUpper", includeUpper)
.toString();
}
}
