/**
* 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,
* 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 org.apache.solr.schema;
import org.apache.lucene.search.SortField;
import org.apache.solr.search.QParser;
import org.apache.solr.search.function.ValueSource;
import org.apache.solr.search.function.FloatFieldSource;
import org.apache.lucene.document.Fieldable;
import org.apache.solr.response.TextResponseWriter;
import org.apache.solr.response.XMLWriter;
import java.util.Map;
import java.io.IOException;
/**
* @version $Id: FloatField.java 1071480 2011-02-17 02:23:10Z hossman $
*/
public class FloatField extends FieldType {
@Override
protected void init(IndexSchema schema, Map<String,String> args) {
restrictProps(SORT_MISSING_FIRST | SORT_MISSING_LAST);
}
@Override
public SortField getSortField(SchemaField field,boolean reverse) {
field.checkSortability();
return new SortField(field.name,SortField.FLOAT, reverse);
}
@Override
public ValueSource getValueSource(SchemaField field, QParser qparser) {
field.checkFieldCacheSource(qparser);
return new FloatFieldSource(field.name);
}
@Override
public void write(XMLWriter xmlWriter, String name, Fieldable f) throws IOException {
xmlWriter.writeFloat(name, f.stringValue());
}
@Override
public void write(TextResponseWriter writer, String name, Fieldable f) throws IOException {
String s = f.stringValue();
// these values may be from a legacy lucene index, which may
// not be properly formatted in some output formats, or may
// incorrectly have a zero length.
if (s.length()==0) {
// zero length value means someone mistakenly indexed the value
// instead of simply leaving it out. Write a null value instead of a numeric.
writer.writeNull(name);
return;
}
try {
float fval = Float.parseFloat(s);
writer.writeFloat(name, fval);
} catch (NumberFormatException e){
// can't parse - write out the contents as a string so nothing is lost and
// clients don't get a parse error.
writer.writeStr(name, s, true);
}
}
@Override
public Float toObject(Fieldable f) {
return Float.valueOf( toExternal(f) );
}
}