/**
* 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.lucene.search.FieldCache;
import org.apache.solr.search.function.ValueSource;
import org.apache.solr.search.function.FieldCacheSource;
import org.apache.solr.search.function.DocValues;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.index.IndexReader;
import org.apache.solr.util.NumberUtils;
import org.apache.solr.request.XMLWriter;
import org.apache.solr.request.TextResponseWriter;
import java.util.Map;
import java.io.IOException;
/**
* @version $Id: SortableIntField.java 648384 2008-04-15 19:22:38Z yonik $
*/
public class SortableIntField extends FieldType {
protected void init(IndexSchema schema, Map<String,String> args) {
}
public SortField getSortField(SchemaField field,boolean reverse) {
return getStringSort(field,reverse);
}
public ValueSource getValueSource(SchemaField field) {
return new SortableIntFieldSource(field.name);
}
public String toInternal(String val) {
// special case single digits? years?, etc
// stringCache? general stringCache on a
// global field level?
return NumberUtils.int2sortableStr(val);
}
public String toExternal(Fieldable f) {
return indexedToReadable(f.stringValue());
}
public String indexedToReadable(String indexedForm) {
return NumberUtils.SortableStr2int(indexedForm);
}
@Override
public Integer toObject(Fieldable f) {
return NumberUtils.SortableStr2int(f.stringValue(), 0, 3);
}
public void write(XMLWriter xmlWriter, String name, Fieldable f) throws IOException {
String sval = f.stringValue();
// since writeInt an int instead of a String since that may be more efficient
// in the future (saves the construction of one String)
xmlWriter.writeInt(name, NumberUtils.SortableStr2int(sval,0,sval.length()));
}
public void write(TextResponseWriter writer, String name, Fieldable f) throws IOException {
String sval = f.stringValue();
writer.writeInt(name, NumberUtils.SortableStr2int(sval,0,sval.length()));
}
}
class SortableIntFieldSource extends FieldCacheSource {
protected int defVal;
public SortableIntFieldSource(String field) {
this(field, 0);
}
public SortableIntFieldSource(String field, int defVal) {
super(field);
this.defVal = defVal;
}
public String description() {
return "sint(" + field + ')';
}
public DocValues getValues(IndexReader reader) throws IOException {
final FieldCache.StringIndex index = cache.getStringIndex(reader, field);
final int[] order = index.order;
final String[] lookup = index.lookup;
final int def = defVal;
return new DocValues() {
public float floatVal(int doc) {
return (float)intVal(doc);
}
public int intVal(int doc) {
int ord=order[doc];
return ord==0 ? def : NumberUtils.SortableStr2int(lookup[ord],0,3);
}
public long longVal(int doc) {
return (long)intVal(doc);
}
public double doubleVal(int doc) {
return (double)intVal(doc);
}
public String strVal(int doc) {
return Integer.toString(intVal(doc));
}
public String toString(int doc) {
return description() + '=' + intVal(doc);
}
};
}
public boolean equals(Object o) {
return o instanceof SortableIntFieldSource
&& super.equals(o)
&& defVal == ((SortableIntFieldSource)o).defVal;
}
private static int hcode = SortableIntFieldSource.class.hashCode();
public int hashCode() {
return hcode + super.hashCode() + defVal;
};
}