org.apache.hadoop.zebra.pig.comparator

Class LeafExpr

java.lang.Object

org.apache.hadoop.zebra.pig.comparator.ComparatorExpr

org.apache.hadoop.zebra.pig.comparator.LeafExpr

Direct Known Subclasses:

BagExpr, BytesExpr, FixedLengthPrimitive, StringExpr

public abstract class LeafExpr
extends ComparatorExpr

Base class of comparator expressions that are the leaves of the expression tree.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LeafExpr(int index) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
protected void	append(org.apache.hadoop.zebra.pig.comparator.EncodingOutputStream out, Tuple tuple)
protected void	appendLeafGenerator(List<LeafGenerator> list, int el, int cel, boolean c, boolean explicitBound)
protected abstract void	appendObject(org.apache.hadoop.zebra.pig.comparator.EncodingOutputStream out, Object object)
protected abstract String	getType()
protected void	illustrate(PrintStream out, int escapeLevel, int comescLevel, boolean complement) Default illustrator for leaf expressions.
protected abstract boolean	implicitBound()
protected void	toString(PrintStream out)

Methods inherited from class java.lang.Object

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

Constructor Detail

LeafExpr

protected LeafExpr(int index)

Constructor

Parameters:

index - tuple position index

Method Detail

illustrate

protected void illustrate(PrintStream out,
              int escapeLevel,
              int comescLevel,
              boolean complement)

Default illustrator for leaf expressions.

Parameters:

out -

escapeLevel -

comescLevel -

complement -

append

protected void append(org.apache.hadoop.zebra.pig.comparator.EncodingOutputStream out,
          Tuple tuple)
               throws ExecException

Throws:

ExecException

appendObject

protected abstract void appendObject(org.apache.hadoop.zebra.pig.comparator.EncodingOutputStream out,
                Object object)
                              throws ExecException

Throws:

ExecException

getType

protected abstract String getType()

implicitBound

protected abstract boolean implicitBound()

appendLeafGenerator

protected void appendLeafGenerator(List<LeafGenerator> list,
                       int el,
                       int cel,
                       boolean c,
                       boolean explicitBound)

Specified by:

appendLeafGenerator in class ComparatorExpr

toString

protected void toString(PrintStream out)

Specified by:

toString in class ComparatorExpr