/*
* 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.accumulo.shell.commands;
import org.apache.accumulo.core.data.Range;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.accumulo.core.util.interpret.ScanInterpreter;
import org.apache.accumulo.shell.Shell;
import org.apache.commons.cli.CommandLine;
import org.apache.hadoop.io.Text;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class MaxRowCommand extends ScanCommand {
private static final Logger log = LoggerFactory.getLogger(MaxRowCommand.class);
@Override
public int execute(final String fullCommand, final CommandLine cl, final Shell shellState) throws Exception {
final String tableName = OptUtil.getTableOpt(cl, shellState);
final ScanInterpreter interpeter = getInterpreter(cl, tableName, shellState);
final Range range = getRange(cl, interpeter);
final Authorizations auths = getAuths(cl, shellState);
final Text startRow = range.getStartKey() == null ? null : range.getStartKey().getRow();
final Text endRow = range.getEndKey() == null ? null : range.getEndKey().getRow();
try {
final Text max = shellState.getConnector().tableOperations()
.getMaxRow(tableName, auths, startRow, range.isStartKeyInclusive(), endRow, range.isEndKeyInclusive());
if (max != null) {
shellState.getReader().println(max.toString());
}
} catch (Exception e) {
log.debug("Could not get shell state.", e);
}
return 0;
}
@Override
public String description() {
return "finds the max row in a table within a given range";
}
}