fe/src/main/java/org/apache/impala/analysis/AlterTableRecoverPartitionsStmt.java

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//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.impala.analysis;

import org.apache.impala.catalog.FeFsTable;
import org.apache.impala.common.AnalysisException;
import org.apache.impala.thrift.TAlterTableParams;
import org.apache.impala.thrift.TAlterTableType;

/**
 * Represents an ALTER TABLE RECOVER PARTITIONS statement.
 */
public class AlterTableRecoverPartitionsStmt extends AlterTableStmt {

  public AlterTableRecoverPartitionsStmt(TableName tableName) {
    super(tableName);
  }

  @Override
  public TAlterTableParams toThrift() {
    TAlterTableParams params = super.toThrift();
    params.setAlter_type(TAlterTableType.RECOVER_PARTITIONS);
    return params;
  }

  @Override
  public void analyze(Analyzer analyzer) throws AnalysisException {
    super.analyze(analyzer);

    // Make sure the target table is an FS-backed Table.
    if (!(table_ instanceof FeFsTable)) {
      throw new AnalysisException("ALTER TABLE RECOVER PARTITIONS " +
          "must target an HDFS table: " + tableName_);
    }

    // Make sure the target table is partitioned.
    if (table_.getMetaStoreTable().getPartitionKeysSize() == 0) {
      throw new AnalysisException("Table is not partitioned: " + tableName_);
    }
  }
}