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* <td>String * <td>Yes * <td>N/A * </tr> * <tr> * <td>lowerTerm * <td>Specified by type * <td>Yes * <td>N/A * </tr> * <tr> * <td>upperTerm * <td>Specified by type * <td>Yes * <td>N/A * </tr> * <tr> * <td>type * <td>int, long, float, double * <td>No * <td>int * </tr> * <tr> * <td>includeLower * <td>true, false * <td>No * <td>true * </tr> * <tr> * <td>includeUpper * <td>true, false * <td>No * <td>true * </tr> * <tr> * <td>precisionStep * <td>Integer * <td>No * <td>4 * </tr> * </table> * <p> * A {@link ParserException} will be thrown if an error occurs parsing the * supplied <tt>lowerTerm or upperTerm into the numeric type * specified by <tt>type. */ public class NumericRangeQueryBuilder implements QueryBuilder { public Query getQuery(Element e) throws ParserException { String field = DOMUtils.getAttributeWithInheritanceOrFail(e, "fieldName"); String lowerTerm = DOMUtils.getAttributeOrFail(e, "lowerTerm"); String upperTerm = DOMUtils.getAttributeOrFail(e, "upperTerm"); boolean lowerInclusive = DOMUtils.getAttribute(e, "includeLower", true); boolean upperInclusive = DOMUtils.getAttribute(e, "includeUpper", true); int precisionStep = DOMUtils.getAttribute(e, "precisionStep", NumericUtils.PRECISION_STEP_DEFAULT); String type = DOMUtils.getAttribute(e, "type", "int"); try { Query filter; if (type.equalsIgnoreCase("int")) { filter = NumericRangeQuery.newIntRange(field, precisionStep, Integer .valueOf(lowerTerm), Integer.valueOf(upperTerm), lowerInclusive, upperInclusive); } else if (type.equalsIgnoreCase("long")) { filter = NumericRangeQuery.newLongRange(field, precisionStep, Long .valueOf(lowerTerm), Long.valueOf(upperTerm), lowerInclusive, upperInclusive); } else if (type.equalsIgnoreCase("double")) { filter = NumericRangeQuery.newDoubleRange(field, precisionStep, Double .valueOf(lowerTerm), Double.valueOf(upperTerm), lowerInclusive, upperInclusive); } else if (type.equalsIgnoreCase("float")) { filter = NumericRangeQuery.newFloatRange(field, precisionStep, Float .valueOf(lowerTerm), Float.valueOf(upperTerm), lowerInclusive, upperInclusive); } else { throw new ParserException( "type attribute must be one of: [long, int, double, float]"); } return filter; } catch (NumberFormatException nfe) { throw new ParserException( "Could not parse lowerTerm or upperTerm into a number", nfe); } } }

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Lucene example source code file (NumericRangeQueryBuilder.java)

This example Lucene source code file (NumericRangeQueryBuilder.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

could, dom, double, double, float, integer, long, numberformatexception, numericrangequerybuilder, parserexception, parserexception, query, query, string, string

The Lucene NumericRangeQueryBuilder.java source code

package org.apache.lucene.xmlparser.builders;

 * 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.util.NumericUtils;
import org.apache.lucene.xmlparser.DOMUtils;
import org.apache.lucene.xmlparser.ParserException;
import org.apache.lucene.xmlparser.QueryBuilder;
import org.w3c.dom.Element;

 * Creates a {@link NumericRangeQuery}. The table below specifies the required
 * attributes and the defaults if optional attributes are omitted. For more
 * detail on what each of the attributes actually do, consult the documentation
 * for {@link NumericRangeQuery}:
 * <table>
 * <tr>
 * <th>Attribute name
 * <th>Values
 * <th>Required
 * <th>Default
 * </tr>
 * <tr>
 * <td>fieldName

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