org.apache.hadoop.hive.ql.ddl.table.partition

Class PartitionUtils

java.lang.Object

org.apache.hadoop.hive.ql.ddl.table.partition.PartitionUtils

public final class PartitionUtils
extends Object

Utilities for partition related DDL operations.

Method Summary

Modifier and Type	Method and Description
static void	addTablePartsOutputs(Hive db, Set<WriteEntity> outputs, Table table, List<Map<String,String>> partitionSpecs, boolean allowMany, WriteEntity.WriteType writeType) Add the table partitions to be modified in the output, so that it is available for the pre-execution hook.
static Partition	getPartition(Hive db, Table table, Map<String,String> partitionSpec, boolean throwException)
static List<Partition>	getPartitions(Hive db, Table table, Map<String,String> partitionSpec, boolean throwException)
static ExprNodeGenericFuncDesc	makeBinaryPredicate(String fn, ExprNodeDesc left, ExprNodeDesc right)
static ExprNodeGenericFuncDesc	makeUnaryPredicate(String fn, ExprNodeDesc arg)
static void	validatePartitions(HiveConf conf, Map<String,String> partitionSpec) Certain partition values are are used by hive.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

validatePartitions

public static void validatePartitions(HiveConf conf,
                                      Map<String,String> partitionSpec)
                               throws SemanticException

Certain partition values are are used by hive. e.g. the default partition in dynamic partitioning and the intermediate partition values used in the archiving process. Naturally, prohibit the user from creating partitions with these reserved values. The check that this function is more restrictive than the actual limitation, but it's simpler. Should be okay since the reserved names are fairly long and uncommon.

Throws:

SemanticException

makeBinaryPredicate

public static ExprNodeGenericFuncDesc makeBinaryPredicate(String fn,
                                                          ExprNodeDesc left,
                                                          ExprNodeDesc right)
                                                   throws SemanticException

Throws:

SemanticException

makeUnaryPredicate

public static ExprNodeGenericFuncDesc makeUnaryPredicate(String fn,
                                                         ExprNodeDesc arg)
                                                  throws SemanticException

Throws:

SemanticException

getPartition

public static Partition getPartition(Hive db,
                                     Table table,
                                     Map<String,String> partitionSpec,
                                     boolean throwException)
                              throws SemanticException

Throws:

SemanticException

getPartitions

public static List<Partition> getPartitions(Hive db,
                                            Table table,
                                            Map<String,String> partitionSpec,
                                            boolean throwException)
                                     throws SemanticException

Throws:

SemanticException

addTablePartsOutputs

public static void addTablePartsOutputs(Hive db,
                                        Set<WriteEntity> outputs,
                                        Table table,
                                        List<Map<String,String>> partitionSpecs,
                                        boolean allowMany,
                                        WriteEntity.WriteType writeType)
                                 throws SemanticException

Add the table partitions to be modified in the output, so that it is available for the pre-execution hook.

Throws:

SemanticException