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package eu.dnetlib.data.hadoop.hbase;
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import java.util.List;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.hbase.client.Delete;
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import org.apache.hadoop.hbase.client.Mutation;
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import org.apache.hadoop.hbase.util.Bytes;
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import eu.dnetlib.data.transform.Column;
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import eu.dnetlib.data.transform.Row;
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/**
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* The Class HBaseDeleteFeeder performs a batch of Delete operations.
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*/
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public class HBaseDeleteFeeder extends HbaseTableFeeder {
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/**
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* Logger.
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*/
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private static final Log log = LogFactory.getLog(HBaseDeleteFeeder.class); // NOPMD by marko on 11/24/08 5:02 PM
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/*
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* (non-Javadoc)
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*
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* @see eu.dnetlib.data.hadoop.hbase.HbaseTableFeeder#addOperation(java.util.List, eu.dnetlib.data.transform.Row)
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*/
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@Override
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protected void addOperation(final List<Mutation> buffer, final Row row) {
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final Delete delete = new Delete(Bytes.toBytes(row.getKey()));
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delete.setWriteToWAL(true);
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for (final Column<String, byte[]> col : row) {
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log.debug(String.format("deleting K: '%s' CF:'%s' Q:'%s'", row.getKey(), row.getColumnFamily(), col.getName()));
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delete.deleteColumns(Bytes.toBytes(row.getColumnFamily()), Bytes.toBytes(col.getName()));
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}
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buffer.add(delete);
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}
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}
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