Uses of Package
org.apache.pig.impl.logicalLayer

Packages that use org.apache.pig.impl.logicalLayer

org.apache.hadoop.zebra.pig	Implementation of PIG Storer/Loader Interfaces
org.apache.pig	Public interfaces and classes for Pig.
org.apache.pig.backend.hadoop.executionengine
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
org.apache.pig.backend.hadoop.executionengine.physicalLayer	Implementation of physical operators that use hadoop as the execution engine and data storage.
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators
org.apache.pig.backend.hadoop.hbase
org.apache.pig.builtin	This package contains builtin Pig UDFs.
org.apache.pig.data	This package contains implementations of Pig specific data types as well as support functions for reading, writing, and using all Pig data types.
org.apache.pig.impl.logicalLayer	The logical operators that represent a pig script and tools for manipulating those operators.
org.apache.pig.impl.logicalLayer.optimizer
org.apache.pig.impl.logicalLayer.schema
org.apache.pig.impl.logicalLayer.validators
org.apache.pig.impl.plan
org.apache.pig.impl.plan.optimizer
org.apache.pig.newplan
org.apache.pig.newplan.logical
org.apache.pig.newplan.logical.expression
org.apache.pig.newplan.logical.optimizer
org.apache.pig.newplan.logical.relational
org.apache.pig.newplan.logical.rules
org.apache.pig.newplan.optimizer
org.apache.pig.pen
org.apache.pig.pen.util
org.apache.pig.piggybank.evaluation.datetime
org.apache.pig.piggybank.evaluation.datetime.convert
org.apache.pig.piggybank.evaluation.datetime.diff
org.apache.pig.piggybank.evaluation.datetime.truncate
org.apache.pig.piggybank.evaluation.math
org.apache.pig.piggybank.evaluation.string
org.apache.pig.piggybank.evaluation.util
org.apache.pig.piggybank.evaluation.util.apachelogparser
org.apache.pig.piggybank.storage
org.apache.pig.tools.pigstats

Classes in org.apache.pig.impl.logicalLayer used by org.apache.hadoop.zebra.pig

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig

FrontendException

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOStore

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.backend.hadoop.executionengine

FrontendException

LogicalPlan

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.backend.hadoop.executionengine.mapReduceLayer

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.backend.hadoop.executionengine.physicalLayer

FrontendException

LOAdd

LOAnd

LOBinCond

LOCast

LOCogroup

LOConst

LOCross

LODistinct

LODivide

LOEqual

LOFilter

LOForEach

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOGreaterThan

LOGreaterThanEqual

LOIsNull

LOJoin

LOLesserThan

LOLesserThanEqual

LOLimit

LOLoad

LOMapLookup

LOMod

LOMultiply

LONative

LONegative

LONot

LONotEqual

LOOr

LOProject
LOProject is designed like a singly linked list; A few examples will illustrate the point about the linked list nature of the design; a = load 'input1' as (name, age); b = group a by name; foreach b generate a, a.name; The project operator occurs in two places in the above script: generate a(here) and a.name(here) In the first occurrence, we are trying to project the elements of the bag a; In order to retrieve the bag, we need to project the the second column ($1) or column number 1 (using the zero based index) from the input (the relation or bag b) In the second occurence, we are trying to project the first column ($0) or column number 0 from the bag a which in turn is the column number 1 in the relation b; As you can see, the nested structure or the singly linked list nature is clearly visible; Given that it's a singly linked list, the null pointer or the sentinel is marked explictly using the boolean variable mSentinel; The sentinel is marked true only when the input is a relational operator; This occurs when we create the innermost operator

LORegexp

LOSort

LOSplit

LOSplitOutput

LOStore

LOStream
LOStream represents the specification of an external command to be executed in a Pig Query.

LOSubtract

LOUnion

LOUserFunc

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.backend.hadoop.hbase

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.builtin

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.data

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.impl.logicalLayer

BinaryExpressionOperator
This abstract class represents the logical Binary Expression Operator The binary operator has two operands and an operator.

ExpressionOperator

FrontendException

LOAdd

LOAnd

LOBinCond

LOCast

LOCogroup

LOCogroup.GROUPTYPE
Enum for the type of group

LOConst

LOCross

LODistinct

LODivide

LOEqual

LOFilter

LOForEach

LOGenerate

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOGreaterThan

LOGreaterThanEqual

LOIsNull

LOJoin

LOJoin.JOINTYPE
Enum for the type of join

LOLesserThan

LOLesserThanEqual

LOLimit

LOLoad

LOMapLookup

LOMod

LOMultiply

LONative

LONegative

LONot

LONotEqual

LOOr

LOProject
LOProject is designed like a singly linked list; A few examples will illustrate the point about the linked list nature of the design; a = load 'input1' as (name, age); b = group a by name; foreach b generate a, a.name; The project operator occurs in two places in the above script: generate a(here) and a.name(here) In the first occurrence, we are trying to project the elements of the bag a; In order to retrieve the bag, we need to project the the second column ($1) or column number 1 (using the zero based index) from the input (the relation or bag b) In the second occurence, we are trying to project the first column ($0) or column number 0 from the bag a which in turn is the column number 1 in the relation b; As you can see, the nested structure or the singly linked list nature is clearly visible; Given that it's a singly linked list, the null pointer or the sentinel is marked explictly using the boolean variable mSentinel; The sentinel is marked true only when the input is a relational operator; This occurs when we create the innermost operator

LORegexp

LOSort

LOSplit

LOSplitOutput

LOStore

LOStream
LOStream represents the specification of an external command to be executed in a Pig Query.

LOSubtract

LOUnion

LOUserFunc

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

RelationalOperator

UnaryExpressionOperator
This abstract class represents the logical Unary Expression Operator The unary operator has an operand and an operator.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.impl.logicalLayer.optimizer

BinaryExpressionOperator
This abstract class represents the logical Binary Expression Operator The binary operator has two operands and an operator.

ExpressionOperator

FrontendException

LOAdd

LOAnd

LOBinCond

LOCast

LOCogroup

LOConst

LOCross

LODistinct

LODivide

LOEqual

LOFilter

LOForEach

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOGreaterThan

LOGreaterThanEqual

LOIsNull

LOJoin

LOLesserThan

LOLesserThanEqual

LOLimit

LOLoad

LOMapLookup

LOMod

LOMultiply

LONative

LONegative

LONot

LONotEqual

LOOr

LOProject
LOProject is designed like a singly linked list; A few examples will illustrate the point about the linked list nature of the design; a = load 'input1' as (name, age); b = group a by name; foreach b generate a, a.name; The project operator occurs in two places in the above script: generate a(here) and a.name(here) In the first occurrence, we are trying to project the elements of the bag a; In order to retrieve the bag, we need to project the the second column ($1) or column number 1 (using the zero based index) from the input (the relation or bag b) In the second occurence, we are trying to project the first column ($0) or column number 0 from the bag a which in turn is the column number 1 in the relation b; As you can see, the nested structure or the singly linked list nature is clearly visible; Given that it's a singly linked list, the null pointer or the sentinel is marked explictly using the boolean variable mSentinel; The sentinel is marked true only when the input is a relational operator; This occurs when we create the innermost operator

LORegexp

LOSort

LOSplit

LOSplitOutput

LOStore

LOSubtract

LOUnion

LOUserFunc

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

UnaryExpressionOperator
This abstract class represents the logical Unary Expression Operator The unary operator has an operand and an operator.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.impl.logicalLayer.schema

CanonicalNamer
A visitor to walk the logical plan and give canonical names fields.

FrontendException

LogicalOperator
Parent for all Logical operators.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.impl.logicalLayer.validators

ExpressionOperator

FrontendException

LOAdd

LOAnd

LOBinCond

LOCast

LOCogroup

LOConst

LOCross

LODistinct

LODivide

LOEqual

LOFilter

LOForEach

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOGreaterThan

LOGreaterThanEqual

LOIsNull

LOJoin

LOLesserThan

LOLesserThanEqual

LOLimit

LOLoad

LOMapLookup

LOMod

LOMultiply

LONative

LONegative

LONot

LONotEqual

LOOr

LOProject
LOProject is designed like a singly linked list; A few examples will illustrate the point about the linked list nature of the design; a = load 'input1' as (name, age); b = group a by name; foreach b generate a, a.name; The project operator occurs in two places in the above script: generate a(here) and a.name(here) In the first occurrence, we are trying to project the elements of the bag a; In order to retrieve the bag, we need to project the the second column ($1) or column number 1 (using the zero based index) from the input (the relation or bag b) In the second occurence, we are trying to project the first column ($0) or column number 0 from the bag a which in turn is the column number 1 in the relation b; As you can see, the nested structure or the singly linked list nature is clearly visible; Given that it's a singly linked list, the null pointer or the sentinel is marked explictly using the boolean variable mSentinel; The sentinel is marked true only when the input is a relational operator; This occurs when we create the innermost operator

LORegexp

LOSort

LOSplit

LOSplitOutput

LOStore

LOStream
LOStream represents the specification of an external command to be executed in a Pig Query.

LOSubtract

LOUnion

LOUserFunc

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

UnaryExpressionOperator
This abstract class represents the logical Unary Expression Operator The unary operator has an operand and an operator.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.impl.plan

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.impl.plan.optimizer

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan.logical

FrontendException

LOAdd

LOAnd

LOBinCond

LOCast

LOCogroup

LOConst

LOCross

LODistinct

LODivide

LOEqual

LOFilter

LOForEach

LOGenerate

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOGreaterThan

LOGreaterThanEqual

LOIsNull

LOJoin

LOLesserThan

LOLesserThanEqual

LOLimit

LOLoad

LOMapLookup

LOMod

LOMultiply

LONative

LONegative

LONot

LONotEqual

LOOr

LOProject
LOProject is designed like a singly linked list; A few examples will illustrate the point about the linked list nature of the design; a = load 'input1' as (name, age); b = group a by name; foreach b generate a, a.name; The project operator occurs in two places in the above script: generate a(here) and a.name(here) In the first occurrence, we are trying to project the elements of the bag a; In order to retrieve the bag, we need to project the the second column ($1) or column number 1 (using the zero based index) from the input (the relation or bag b) In the second occurence, we are trying to project the first column ($0) or column number 0 from the bag a which in turn is the column number 1 in the relation b; As you can see, the nested structure or the singly linked list nature is clearly visible; Given that it's a singly linked list, the null pointer or the sentinel is marked explictly using the boolean variable mSentinel; The sentinel is marked true only when the input is a relational operator; This occurs when we create the innermost operator

LORegexp

LOSort

LOSplit

LOSplitOutput

LOStore

LOStream
LOStream represents the specification of an external command to be executed in a Pig Query.

LOSubtract

LOUnion

LOUserFunc

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan.logical.expression

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan.logical.optimizer

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan.logical.relational

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan.logical.rules

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.newplan.optimizer

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.pen

LOCogroup

LOCross

LODistinct

LOFilter

LOForEach

LogicalOperator
Parent for all Logical operators.

LogicalPlan

LOJoin

LOLimit

LOLoad

LOSort

LOSplit

LOSplitOutput

LOStore

LOStream
LOStream represents the specification of an external command to be executed in a Pig Query.

LOUnion

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.pen.util

LogicalOperator
Parent for all Logical operators.

LogicalPlan

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.datetime

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.datetime.convert

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.datetime.diff

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.datetime.truncate

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.math

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.string

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.util

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.evaluation.util.apachelogparser

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.piggybank.storage

FrontendException

Classes in org.apache.pig.impl.logicalLayer used by org.apache.pig.tools.pigstats

FrontendException

LOCogroup

LOCross

LODistinct

LOFilter

LOForEach

LogicalPlan

LOJoin

LOLimit

LONative

LOSort

LOSplit

LOStream
LOStream represents the specification of an external command to be executed in a Pig Query.

LOUnion

LOVisitor
A visitor mechanism for navigating and operating on a tree of Logical Operators.