org.apache.hadoop.hive.ql.processors.ListResourceProcessor Maven / Gradle / Ivy
The newest version!
/**
* 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.hadoop.hive.ql.processors;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.apache.hadoop.hive.metastore.api.Schema;
import org.apache.hadoop.hive.ql.CommandNeedRetryException;
import org.apache.hadoop.hive.ql.session.SessionState;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import static org.apache.hadoop.hive.serde.serdeConstants.SERIALIZATION_NULL_FORMAT;
import static org.apache.hadoop.hive.serde.serdeConstants.STRING_TYPE_NAME;
import static org.apache.hadoop.hive.serde2.MetadataTypedColumnsetSerDe.defaultNullString;
public class ListResourceProcessor implements CommandProcessor {
private static final String LIST_COLUMN_NAME = "resource";
private static final Schema SCHEMA;
static {
SCHEMA = new Schema();
SCHEMA.addToFieldSchemas(new FieldSchema(LIST_COLUMN_NAME, STRING_TYPE_NAME, null));
SCHEMA.putToProperties(SERIALIZATION_NULL_FORMAT, defaultNullString);
}
@Override
public void init() {
}
@Override
public CommandProcessorResponse run(String command) throws CommandNeedRetryException {
SessionState ss = SessionState.get();
String[] tokens = command.split("\\s+");
SessionState.ResourceType t;
if (tokens.length < 1 || (t = SessionState.find_resource_type(tokens[0])) == null) {
String message = "Usage: list ["
+ StringUtils.join(SessionState.ResourceType.values(), "|") + "] [ []*]";
return new CommandProcessorResponse(1, message, null);
}
List filter = null;
if (tokens.length > 1) {
filter = Arrays.asList(Arrays.copyOfRange(tokens, 1, tokens.length));
}
Set s = ss.list_resource(t, filter);
if (s != null && !s.isEmpty()) {
ss.out.println(StringUtils.join(s, "\n"));
}
return new CommandProcessorResponse(0, null, null, SCHEMA);
}
}