org.apache.solr.schema.StrField Maven / Gradle / Ivy
/**
* 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.document.Fieldable;
import org.apache.lucene.index.IndexReader;
import org.apache.solr.request.XMLWriter;
import org.apache.solr.request.TextResponseWriter;
import org.apache.solr.search.function.ValueSource;
import org.apache.solr.search.function.FieldCacheSource;
import org.apache.solr.search.function.DocValues;
import org.apache.solr.search.function.StringIndexDocValues;
import org.apache.solr.search.QParser;
import java.util.Map;
import java.io.IOException;
/**
* @version $Id: StrField.java 817783 2009-09-22 19:23:07Z yonik $
*/
public class StrField extends CompressableField {
protected void init(IndexSchema schema, Map args) {
super.init(schema, args);
}
public SortField getSortField(SchemaField field,boolean reverse) {
return getStringSort(field,reverse);
}
public void write(XMLWriter xmlWriter, String name, Fieldable f) throws IOException {
xmlWriter.writeStr(name, f.stringValue());
}
public void write(TextResponseWriter writer, String name, Fieldable f) throws IOException {
writer.writeStr(name, f.stringValue(), true);
}
public ValueSource getValueSource(SchemaField field, QParser parser) {
return new StrFieldSource(field.getName());
}
}
class StrFieldSource extends FieldCacheSource {
public StrFieldSource(String field) {
super(field);
}
public String description() {
return "str(" + field + ')';
}
public DocValues getValues(Map context, IndexReader reader) throws IOException {
return new StringIndexDocValues(this, reader, field) {
protected String toTerm(String readableValue) {
return readableValue;
}
public float floatVal(int doc) {
return (float)intVal(doc);
}
public int intVal(int doc) {
int ord=order[doc];
return ord;
}
public long longVal(int doc) {
return (long)intVal(doc);
}
public double doubleVal(int doc) {
return (double)intVal(doc);
}
public String strVal(int doc) {
int ord=order[doc];
return lookup[ord];
}
public String toString(int doc) {
return description() + '=' + strVal(doc);
}
};
}
public boolean equals(Object o) {
return o instanceof StrFieldSource
&& super.equals(o);
}
private static int hcode = SortableFloatFieldSource.class.hashCode();
public int hashCode() {
return hcode + super.hashCode();
};
}