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Viewing changes to lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/NumericRangeQueryBuilder.java

  • Committer: Sebastian Meyer
  • Date: 2012-08-03 09:12:40 UTC
  • Revision ID: sebastian.meyer@slub-dresden.de-20120803091240-x6861b0vabq1xror
https://launchpad.net/bugs/985487
Remove Lucene and Solr source code and add patches instead
Fix Bug #985487: Auto-suggestion for the search interface

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lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/NumericRangeQueryBuilder.java
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package org.apache.lucene.xmlparser.builders;
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/**
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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * contributor license agreements.  See the NOTICE file distributed with
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 * this work for additional information regarding copyright ownership.
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 * The ASF licenses this file to You under the Apache License, Version 2.0
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 * (the "License"); you may not use this file except in compliance with
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 * the License.  You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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import org.apache.lucene.search.NumericRangeQuery;
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import org.apache.lucene.search.Query;
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import org.apache.lucene.util.NumericUtils;
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import org.apache.lucene.xmlparser.DOMUtils;
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import org.apache.lucene.xmlparser.ParserException;
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import org.apache.lucene.xmlparser.QueryBuilder;
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import org.w3c.dom.Element;
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/**
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 * Creates a {@link NumericRangeQuery}. The table below specifies the required
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 * attributes and the defaults if optional attributes are omitted. For more
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 * detail on what each of the attributes actually do, consult the documentation
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 * for {@link NumericRangeQuery}:
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 * <table>
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 * <tr>
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 * <th>Attribute name</th>
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 * <th>Values</th>
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 * <th>Required</th>
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 * <th>Default</th>
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 * </tr>
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 * <tr>
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 * <td>fieldName</td>
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 * <td>String</td>
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 * <td>Yes</td>
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 * <td>N/A</td>
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 * </tr>
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 * <tr>
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 * <td>lowerTerm</td>
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 * <td>Specified by <tt>type</tt></td>
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 * <td>Yes</td>
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 * <td>N/A</td>
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 * </tr>
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 * <tr>
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 * <td>upperTerm</td>
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 * <td>Specified by <tt>type</tt></td>
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 * <td>Yes</td>
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 * <td>N/A</td>
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 * </tr>
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 * <tr>
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 * <td>type</td>
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 * <td>int, long, float, double</td>
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 * <td>No</td>
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 * <td>int</td>
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 * </tr>
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 * <tr>
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 * <td>includeLower</td>
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 * <td>true, false</td>
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 * <td>No</td>
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 * <td>true</td>
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 * </tr>
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 * <tr>
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 * <td>includeUpper</td>
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 * <td>true, false</td>
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 * <td>No</td>
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 * <td>true</td>
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 * </tr>
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 * <tr>
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 * <td>precisionStep</td>
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 * <td>Integer</td>
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 * <td>No</td>
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 * <td>4</td>
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 * </tr>
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 * </table>
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 * <p>
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 * A {@link ParserException} will be thrown if an error occurs parsing the
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 * supplied <tt>lowerTerm</tt> or <tt>upperTerm</tt> into the numeric type
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 * specified by <tt>type</tt>.
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 */
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public class NumericRangeQueryBuilder implements QueryBuilder {
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        public Query getQuery(Element e) throws ParserException {
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                String field = DOMUtils.getAttributeWithInheritanceOrFail(e, "fieldName");
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                String lowerTerm = DOMUtils.getAttributeOrFail(e, "lowerTerm");
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                String upperTerm = DOMUtils.getAttributeOrFail(e, "upperTerm");
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                boolean lowerInclusive = DOMUtils.getAttribute(e, "includeLower", true);
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                boolean upperInclusive = DOMUtils.getAttribute(e, "includeUpper", true);
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                int precisionStep = DOMUtils.getAttribute(e, "precisionStep", NumericUtils.PRECISION_STEP_DEFAULT);
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                String type = DOMUtils.getAttribute(e, "type", "int");
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                try {
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                        Query filter;
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                        if (type.equalsIgnoreCase("int")) {
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                                filter = NumericRangeQuery.newIntRange(field, precisionStep, Integer
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                                                .valueOf(lowerTerm), Integer.valueOf(upperTerm), lowerInclusive,
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                                                upperInclusive);
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                        } else if (type.equalsIgnoreCase("long")) {
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                                filter = NumericRangeQuery.newLongRange(field, precisionStep, Long
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                                                .valueOf(lowerTerm), Long.valueOf(upperTerm), lowerInclusive,
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                                                upperInclusive);
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                        } else if (type.equalsIgnoreCase("double")) {
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                                filter = NumericRangeQuery.newDoubleRange(field, precisionStep, Double
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                                                .valueOf(lowerTerm), Double.valueOf(upperTerm), lowerInclusive,
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                                                upperInclusive);
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                        } else if (type.equalsIgnoreCase("float")) {
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                                filter = NumericRangeQuery.newFloatRange(field, precisionStep, Float
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                                                .valueOf(lowerTerm), Float.valueOf(upperTerm), lowerInclusive,
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                                                upperInclusive);
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                        } else {
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                                throw new ParserException(
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                                                "type attribute must be one of: [long, int, double, float]");
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                        }
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                        return filter;
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                } catch (NumberFormatException nfe) {
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                        throw new ParserException(
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                                        "Could not parse lowerTerm or upperTerm into a number", nfe);
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                }
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        }
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}