org.apache.hadoop.hive.ql.hooks
Enum LineageInfo.DependencyType
java.lang.Object
java.lang.Enum<LineageInfo.DependencyType>
org.apache.hadoop.hive.ql.hooks.LineageInfo.DependencyType
- All Implemented Interfaces:
- Serializable, Comparable<LineageInfo.DependencyType>
- Enclosing class:
- LineageInfo
public static enum LineageInfo.DependencyType
- extends Enum<LineageInfo.DependencyType>
Enum to track dependency. This enum has the following values:
1. SIMPLE - Indicates that the column is derived from another table column
with no transformations e.g. T2.c1 = T1.c1.
2. EXPRESSION - Indicates that the column is derived from a UDF, UDAF, UDTF or
set operations like union on columns on other tables
e.g. T2.c1 = T1.c1 + T3.c1.
4. SCRIPT - Indicates that the column is derived from the output
of a user script through a TRANSFORM, MAP or REDUCE syntax
or from the output of a PTF chain execution.
SIMPLE
public static final LineageInfo.DependencyType SIMPLE
EXPRESSION
public static final LineageInfo.DependencyType EXPRESSION
SCRIPT
public static final LineageInfo.DependencyType SCRIPT
values
public static LineageInfo.DependencyType[] values()
- Returns an array containing the constants of this enum type, in
the order they are declared. This method may be used to iterate
over the constants as follows:
for (LineageInfo.DependencyType c : LineageInfo.DependencyType.values())
System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in
the order they are declared
valueOf
public static LineageInfo.DependencyType valueOf(String name)
- Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
not permitted.)
- Parameters:
name
- the name of the enum constant to be returned.
- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum type has no constant
with the specified name
NullPointerException
- if the argument is null
Copyright © 2014 The Apache Software Foundation. All rights reserved.