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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.impala.catalog;
import org.apache.impala.thrift.TCatalogObject;
import org.apache.impala.thrift.TCatalogObjectType;
import org.apache.impala.thrift.TDataSource;
import com.google.common.base.Objects;
/**
* Represents a data source in the catalog. Contains the data source name and all
* information needed to locate and load the data source.
*/
public class DataSource extends CatalogObjectImpl implements FeDataSource {
private final String dataSrcName_;
private final String className_;
private final String apiVersionString_;
// Qualified path to the data source.
private final String location_;
public DataSource(String dataSrcName, String location, String className,
String apiVersionString) {
dataSrcName_ = dataSrcName;
location_ = location;
className_ = className;
apiVersionString_ = apiVersionString;
}
public static DataSource fromThrift(TDataSource thrift) {
return new DataSource(thrift.getName(), thrift.getHdfs_location(),
thrift.getClass_name(), thrift.getApi_version());
}
@Override
public TCatalogObjectType getCatalogObjectType() {
return TCatalogObjectType.DATA_SOURCE;
}
@Override
public String getName() { return dataSrcName_; }
@Override // FeDataSource
public String getLocation() { return location_; }
@Override // FeDataSource
public String getClassName() { return className_; }
@Override // FeDataSource
public String getApiVersion() { return apiVersionString_; }
public TDataSource toThrift() {
return new TDataSource(getName(), location_, className_, apiVersionString_);
}
public String debugString() {
return Objects.toStringHelper(this)
.add("name", dataSrcName_)
.add("location", location_)
.add("className", className_)
.add("apiVersion", apiVersionString_)
.toString();
}
public static String debugString(TDataSource thrift) {
return fromThrift(thrift).debugString();
}
@Override
protected void setTCatalogObject(TCatalogObject catalogObject) {
catalogObject.setData_source(toThrift());
}
}