// Copyright 2009 Google Inc.
//
// 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 com.google.enterprise.connector.pusher;
import com.google.enterprise.connector.instantiator.DocumentFilterFactoryFactory;
import com.google.enterprise.connector.instantiator.DocumentFilterFactoryFactoryImpl;
import com.google.enterprise.connector.traversal.FileSizeLimitInfo;
import java.util.logging.Logger;
/**
* Factory that creates {@link DocPusher} instances that feed
* {@link FeedConnection}.
*/
// TODO: Support multiple sinks where different connector instances
// might feed different sinks.
public class DocPusherFactory implements PusherFactory {
private static final Logger LOGGER =
Logger.getLogger(DocPusherFactory.class.getName());
/**
* FeedConnection that is the sink for our generated XmlFeeds.
*/
private final FeedConnection feedConnection;
/**
* Configured maximum document size and maximum feed file size supported.
*/
private final FileSizeLimitInfo fileSizeLimit;
/**
* The {@link DocumentFilterFactoryFactory} is used to construct
* {@code Document} instances that act as filters on a source
* document. Document filters may add, remove, or modify
* {@code Properties}. The DocumentFilterFactoryFactory set here
* typically creates a {@link DocumentFilterChain} - a chain of
* DocumentFilterFactories that is used to construct a
* Document manipulation pipeline.
*/
private final DocumentFilterFactoryFactory documentFilterFactoryFactory;
/**
* Creates a {@code DocPusherFactory} object from the specified
* {@code feedConnection}. This constructor is Used by the tests.
*
* @param feedConnection a FeedConnection
*/
public DocPusherFactory(FeedConnection feedConnection) {
this(feedConnection, new FileSizeLimitInfo(),
new DocumentFilterFactoryFactoryImpl(null, null));
}
/**
* Creates a {@code DocPusherFactory} object from the specified
* {@code feedConnection}. The supplied {@link FileSizeLimitInfo} specifies
* constraints as to the size of a Document's content and the size of
* generated Feed files.
*
* @param feedConnection a {@link FeedConnection} sink for documents.
* @param fileSizeLimit {@link FileSizeLimitInfo} constraints on document
* content and feed size.
* @param documentFilterFactoryFactory a {@link DocumentFilterFactoryFactory}
* that will be used to create document processing filters.
*/
public DocPusherFactory(FeedConnection feedConnection,
FileSizeLimitInfo fileSizeLimit,
DocumentFilterFactoryFactory documentFilterFactoryFactory) {
this.feedConnection = feedConnection;
this.fileSizeLimit = fileSizeLimit;
this.documentFilterFactoryFactory = documentFilterFactoryFactory;
LOGGER.config(feedConnection.toString());
LOGGER.config(fileSizeLimit.toString());
LOGGER.config(documentFilterFactoryFactory.toString());
}
@Override
public Pusher newPusher(String dataSource) {
return new DocPusher(feedConnection, dataSource, fileSizeLimit,
documentFilterFactoryFactory.getDocumentFilterFactory(dataSource));
}
}