/*
* Seldon -- open source prediction engine
* =======================================
*
* Copyright 2011-2015 Seldon Technologies Ltd and Rummble Ltd (http://www.seldon.io/)
*
* ********************************************************************************************
*
* Licensed 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 io.seldon.semvec;
public class DocumentIdTransform implements QueryTransform<Long> {
@Override
public Long fromSV(String doc) {
int i = doc.indexOf("/");
int j = doc.indexOf("/", i+1);
String part1 = doc.substring(i+1, j);
String part2 = doc.substring(j+1);
return Long.parseLong(part1+part2);
}
@Override
public String toSV(Long id) {
if (id != null)
{
String idStr = "" + id;
if (idStr.length() < 5)
return "docs/0000/" + id;
else
{
String[] struc = new String[2];
struc[0] = idStr.substring(0, 4);
struc[1] = idStr.substring(4);
String docName = "docs/" + struc[0] + "/" +struc[1];
return docName;
}
}
else
return null;
}
public static void main(String[] args)
{
DocumentIdTransform t = new DocumentIdTransform();
System.out.println(""+(t.fromSV("docs/0000/456")));
System.out.println(t.toSV(456L));
}
}