/**
* 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.metastore.partition.spec;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.metastore.api.Partition;
import org.apache.hadoop.hive.metastore.api.PartitionSpec;
import org.apache.hadoop.hive.metastore.api.PartitionSpecWithSharedSD;
import org.apache.hadoop.hive.metastore.api.PartitionWithoutSD;
import org.apache.hadoop.hive.metastore.api.StorageDescriptor;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* Subclass of PartitionSpecProxy that pulls out commonality of
* StorageDescriptor properties within a Partition-list into a common
* StorageDescriptor instance.
*/
public class PartitionSpecWithSharedSDProxy extends PartitionSpecProxy {
private PartitionSpec partitionSpec;
public PartitionSpecWithSharedSDProxy(PartitionSpec partitionSpec) {
assert partitionSpec.isSetSharedSDPartitionSpec();
this.partitionSpec = partitionSpec;
}
@Override
public int size() {
return partitionSpec.getSharedSDPartitionSpec().getPartitionsSize();
}
@Override
public void setDbName(String dbName) {
partitionSpec.setDbName(dbName);
}
@Override
public void setTableName(String tableName) {
partitionSpec.setTableName(tableName);
}
@Override
public String getDbName() {
return partitionSpec.getDbName();
}
@Override
public String getTableName() {
return partitionSpec.getTableName();
}
public PartitionIterator getPartitionIterator() {
return new Iterator(this);
}
@Override
public List<PartitionSpec> toPartitionSpec() {
return Arrays.asList(partitionSpec);
}
@Override
public void setRootLocation(String rootLocation) throws MetaException {
partitionSpec.setRootPath(rootLocation);
partitionSpec.getSharedSDPartitionSpec().getSd().setLocation(rootLocation);
}
/**
* Iterator implementation to iterate over all Partitions within the PartitionSpecWithSharedSDProxy.
*/
public static class Iterator implements PartitionIterator {
private PartitionSpecWithSharedSDProxy partitionSpecWithSharedSDProxy;
private PartitionSpecWithSharedSD pSpec;
private int index;
Iterator(PartitionSpecWithSharedSDProxy partitionSpecWithSharedSDProxy) {
this.partitionSpecWithSharedSDProxy = partitionSpecWithSharedSDProxy;
this.pSpec = this.partitionSpecWithSharedSDProxy.partitionSpec.getSharedSDPartitionSpec();
this.index = 0;
}
@Override
public boolean hasNext() {
return index < pSpec.getPartitions().size();
}
@Override
public Partition next() {
Partition partition = getCurrent();
++index;
return partition;
}
@Override
public void remove() {
pSpec.getPartitions().remove(index);
}
@Override
public Partition getCurrent() {
PartitionWithoutSD partWithoutSD = pSpec.getPartitions().get(index);
StorageDescriptor partSD = new StorageDescriptor(pSpec.getSd());
partSD.setLocation(partSD.getLocation() + partWithoutSD.getRelativePath());
return new Partition(
partWithoutSD.getValues(),
partitionSpecWithSharedSDProxy.partitionSpec.getDbName(),
partitionSpecWithSharedSDProxy.partitionSpec.getTableName(),
partWithoutSD.getCreateTime(),
partWithoutSD.getLastAccessTime(),
partSD,
partWithoutSD.getParameters()
);
}
@Override
public String getDbName() {
return partitionSpecWithSharedSDProxy.partitionSpec.getDbName();
}
@Override
public String getTableName() {
return partitionSpecWithSharedSDProxy.partitionSpec.getTableName();
}
@Override
public Map<String, String> getParameters() {
return pSpec.getPartitions().get(index).getParameters();
}
@Override
public void setParameters(Map<String, String> parameters) {
pSpec.getPartitions().get(index).setParameters(parameters);
}
@Override
public String getLocation() {
return pSpec.getSd().getLocation() + pSpec.getPartitions().get(index).getRelativePath();
}
@Override
public void putToParameters(String key, String value) {
pSpec.getPartitions().get(index).putToParameters(key, value);
}
@Override
public void setCreateTime(long time) {
pSpec.getPartitions().get(index).setCreateTime((int)time);
}
} // static class Iterator;
}