com.marklogic.contentpump.StreamingDocumentReader Maven / Gradle / Ivy
/*
* Copyright (c) 2019 MarkLogic Corporation
*
* 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.marklogic.contentpump;
/**
* RecordReader for unbuffered streaming documents. Used when streaming
* option is set to true.
*/
import java.io.IOException;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
import com.marklogic.mapreduce.CompressionCodec;
import com.marklogic.mapreduce.DocumentURIWithSourceInfo;
import com.marklogic.mapreduce.StreamLocator;
public class StreamingDocumentReader extends
CombineDocumentReader {
@Override
public DocumentURIWithSourceInfo getCurrentKey()
throws IOException, InterruptedException {
return key;
}
@Override
public boolean nextKeyValue() throws IOException, InterruptedException {
if (iterator.hasNext()) {
FileSplit split = iterator.next();
setFile(split.getPath());
String uri = makeURIFromPath(file);
if (setKey(uri, 0, 0, true)) {
return true;
}
value = new StreamLocator(file, CompressionCodec.NONE);
bytesRead += split.getLength();
return true;
}
return false;
}
}