org.apache.accumulo.shell.commands.RenameNamespaceCommand Maven / Gradle / Ivy

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/*
 * 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 java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.accumulo.core.client.AccumuloException;
import org.apache.accumulo.core.client.AccumuloSecurityException;
import org.apache.accumulo.core.client.NamespaceExistsException;
import org.apache.accumulo.core.client.NamespaceNotFoundException;
import org.apache.accumulo.core.client.TableExistsException;
import org.apache.accumulo.core.client.TableNotFoundException;
import org.apache.accumulo.core.client.impl.Namespaces;
import org.apache.accumulo.core.client.impl.Tables;
import org.apache.accumulo.shell.Shell;
import org.apache.accumulo.shell.Shell.Command;
import org.apache.accumulo.shell.Token;
import org.apache.commons.cli.CommandLine;

public class RenameNamespaceCommand extends Command {
  @Override
  public int execute(final String fullCommand, final CommandLine cl, final Shell shellState)
      throws AccumuloException, AccumuloSecurityException, TableNotFoundException,
      TableExistsException, NamespaceNotFoundException, NamespaceExistsException {
    String old = cl.getArgs()[0];
    String newer = cl.getArgs()[1];
    boolean resetContext = false;
    String currentTableId = "";
    if (!(shellState.getTableName() == null) && !shellState.getTableName().isEmpty()) {
      String namespaceId = Namespaces.getNamespaceId(shellState.getInstance(), old);
      List tableIds = Namespaces.getTableIds(shellState.getInstance(), namespaceId);
      currentTableId = Tables.getTableId(shellState.getInstance(), shellState.getTableName());
      resetContext = tableIds.contains(currentTableId);
    }

    shellState.getConnector().namespaceOperations().rename(old, newer);

    if (resetContext) {
      shellState.setTableName(Tables.getTableName(shellState.getInstance(), currentTableId));
    }

    return 0;
  }

  @Override
  public String usage() {
    return getName() + "  ";
  }

  @Override
  public String description() {
    return "renames a namespace";
  }

  @Override
  public void registerCompletion(final Token root,
      final Map> special) {
    registerCompletionForNamespaces(root, special);
  }

  @Override
  public int numArgs() {
    return 2;
  }
}