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SearchService.java
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SearchService.java
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/*
* 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.zeppelin.search;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.apache.zeppelin.notebook.Note;
import org.apache.zeppelin.notebook.NoteEventAsyncListener;
import org.apache.zeppelin.notebook.Paragraph;
/**
* Search (both, indexing and query) the notes.
*
* Intended to have multiple implementation, i.e:
* - local Lucene (in-memory, on-disk)
* - remote Elasticsearch
*/
public abstract class SearchService extends NoteEventAsyncListener {
public SearchService(String name) {
super(name);
}
/**
* Full-text search in all the notes
*
* @param queryStr a query
* @return A list of matching paragraphs (id, text, snippet w/ highlight)
*/
public abstract List<Map<String, String>> query(String queryStr);
/**
* Updates all documents in index for the given note:
* - name
* - all paragraphs
*
* @param note a Note to update index for
* @throws IOException
*/
public abstract void updateIndexDoc(Note note) throws IOException;
/**
* Indexes full collection of notes: all the paragraphs + Note names
*
* @param collection of Notes
*/
public abstract void addIndexDocs(Collection<Note> collection);
/**
* Indexes the given note.
*
* @throws IOException If there is a low-level I/O error
*/
public abstract void addIndexDoc(Note note);
/**
* Deletes all docs on given Note from index
*/
public abstract void deleteIndexDocs(String noteId);
/**
* Deletes doc for a given
*
* @param noteId
* @param p
* @throws IOException
*/
public abstract void deleteIndexDoc(String noteId, Paragraph p);
/**
* Frees the recourses used by index
*/
public void close() {
super.close();
}
@Override
public void handleNoteCreateEvent(NoteCreateEvent noteCreateEvent) {
addIndexDoc(noteCreateEvent.getNote());
}
@Override
public void handleNoteRemoveEvent(NoteRemoveEvent noteRemoveEvent) {
deleteIndexDocs(noteRemoveEvent.getNote().getId());
}
@Override
public void handleNoteUpdateEvent(NoteUpdateEvent noteUpdateEvent) {
try {
updateIndexDoc(noteUpdateEvent.getNote());
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void handleParagraphCreateEvent(ParagraphCreateEvent paragraphCreateEvent) {
try {
updateIndexDoc(paragraphCreateEvent.getParagraph().getNote());
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void handleParagraphRemoveEvent(ParagraphRemoveEvent paragraphRemoveEvent) {
Paragraph p = paragraphRemoveEvent.getParagraph();
deleteIndexDoc(p.getNote().getId(), p);
}
@Override
public void handleParagraphUpdateEvent(ParagraphUpdateEvent paragraphUpdateEvent) {
try {
updateIndexDoc(paragraphUpdateEvent.getParagraph().getNote());
} catch (IOException e) {
e.printStackTrace();
}
}
public abstract void startRebuildIndex(List<Note> notes);
}