| /* |
| * 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.examples.helloworld; |
| |
| import java.util.Map.Entry; |
| |
| import org.apache.accumulo.core.client.Accumulo; |
| import org.apache.accumulo.core.client.AccumuloClient; |
| import org.apache.accumulo.core.client.Scanner; |
| import org.apache.accumulo.core.client.TableNotFoundException; |
| import org.apache.accumulo.core.data.Key; |
| import org.apache.accumulo.core.data.Range; |
| import org.apache.accumulo.core.data.Value; |
| import org.apache.accumulo.core.security.Authorizations; |
| import org.apache.accumulo.examples.cli.ClientOpts; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Reads all data between two rows |
| */ |
| public class Read { |
| |
| private static final Logger log = LoggerFactory.getLogger(Read.class); |
| |
| public static void main(String[] args) throws TableNotFoundException { |
| ClientOpts opts = new ClientOpts(); |
| opts.parseArgs(Read.class.getName(), args); |
| |
| try (AccumuloClient client = Accumulo.newClient().from(opts.getClientPropsPath()).build(); |
| Scanner scan = client.createScanner(Insert.HELLO_TABLE, Authorizations.EMPTY)) { |
| scan.setRange(new Range(new Key("row_0"), new Key("row_1002"))); |
| for (Entry<Key,Value> e : scan) { |
| Key key = e.getKey(); |
| log.trace(key.getRow() + " " + key.getColumnFamily() + " " + key.getColumnQualifier() + " " |
| + e.getValue()); |
| } |
| log.info("Scan complete"); |
| } |
| } |
| } |