org.apache.hadoop.hive.ql.ddl.table.misc.rename.AbstractAlterTableRenameAnalyzer Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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package org.apache.hadoop.hive.ql.ddl.table.misc.rename;
import java.util.Map;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.common.TableName;
import org.apache.hadoop.hive.metastore.Warehouse;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.ql.QueryState;
import org.apache.hadoop.hive.ql.ddl.DDLUtils;
import org.apache.hadoop.hive.ql.ddl.DDLWork;
import org.apache.hadoop.hive.ql.ddl.table.AbstractAlterTableAnalyzer;
import org.apache.hadoop.hive.ql.exec.TaskFactory;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.io.AcidUtils;
import org.apache.hadoop.hive.ql.metadata.Table;
import org.apache.hadoop.hive.ql.parse.ASTNode;
import org.apache.hadoop.hive.ql.parse.SemanticException;
/**
* Analyzer for rename table like entities commands.
*/
public abstract class AbstractAlterTableRenameAnalyzer extends AbstractAlterTableAnalyzer {
public AbstractAlterTableRenameAnalyzer(QueryState queryState) throws SemanticException {
super(queryState);
}
@Override
protected void analyzeCommand(TableName tableName, Map partitionSpec, ASTNode command)
throws SemanticException {
TableName target = getQualifiedTableName((ASTNode) command.getChild(0));
AlterTableRenameDesc desc = new AlterTableRenameDesc(tableName, null, isView(), target.getNotEmptyDbTable());
Table table = getTable(tableName.getNotEmptyDbTable(), true);
if (AcidUtils.isTransactionalTable(table)) {
setAcidDdlDesc(desc);
}
addInputsOutputsAlterTable(tableName, null, desc, desc.getType(), false);
String newDatabaseName = target.getDb() != null ? target.getDb() : table.getDbName(); // extract new database name from new table name, if not specified, then src dbname is used
DDLUtils.addDbAndTableToOutputs(getDatabase(newDatabaseName), target,
table.getTableType(), table.isTemporary(), table.getParameters(), outputs);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), desc)));
}
protected abstract boolean isView();
}