saffron.rel.convert
Class IterConverter

java.lang.Object
  |
  +--saffron.rel.Rel
        |
        +--saffron.rel.SingleRel
              |
              +--saffron.rel.convert.Converter
                    |
                    +--saffron.rel.convert.IterConverter

public class IterConverter

extends Converter

IterConverter converts a plan from inConvention to CallingConvention.ITERATOR_ORDINAL.

Nested Class Summary

Nested classes inherited from class saffron.rel.Rel

Field Summary

Fields inherited from class saffron.rel.convert.Converter

inConvention

Fields inherited from class saffron.rel.SingleRel

child

Fields inherited from class saffron.rel.Rel

cluster, digest, id, rowType

Constructor Summary

IterConverter(Cluster cluster, Rel child)

Method Summary

Object	clone()
CallingConvention	getConvention() Returns a value from CallingConvention.
private String	getResultSetAccessorMethod(OJClass clazz) Returns the name of the method in ResultSet for retrieving a particular type.
Object	implement(Implementor implementor, int ordinal) Create a plan for this expression according to a calling convention.
private Object	implementCollection(Implementor implementor, int ordinal)
private Object	implementEnumeration(Implementor implementor, int ordinal)
private Object	implementIterable(Implementor implementor, int ordinal)
private Object	implementResultSet(Implementor implementor, int ordinal)
static void	init(Planner planner)
private String	toInitcap(String s)

Methods inherited from class saffron.rel.convert.Converter

computeSelfCost

Methods inherited from class saffron.rel.SingleRel

childrenAccept, deriveRowType, explain, getInputs, replaceInput

Methods inherited from class saffron.rel.Rel

computeDigest, getChildExps, getCluster, getCorelVariable, getEnvironment, getId, getInput, getOrCreateCorelVariable, getParentEnv, getQualifier, getQuery, getRelTypeName, getRows, getRowType, getTable, getType, getVariablesStopped, implementExp, implementExps, implementFieldAccess, implementSelf, isAccessTo, isDistinct, onRegister, recomputeDigest, register, registerCorelVariable, setCorelVariable, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

IterConverter

public IterConverter(Cluster cluster,
                     Rel child)

Method Detail

clone

public Object clone()

Specified by:

clone in class Rel

getConvention

public CallingConvention getConvention()

Description copied from class: Rel

Returns a value from CallingConvention.

Overrides:

getConvention in class Rel

init

public static void init(Planner planner)

implement

public Object implement(Implementor implementor,
                        int ordinal)

Description copied from class: Rel

Create a plan for this expression according to a calling convention.

Overrides:

implement in class Converter

Parameters:

implementor - implementor

ordinal - indicates our position in the pre-, in- and postfix walk over the tree; ordinal is -1 when called from the parent, and i when called from the i^th child.

implementEnumeration

private Object implementEnumeration(Implementor implementor,
                                    int ordinal)

implementIterable

private Object implementIterable(Implementor implementor,
                                 int ordinal)

implementCollection

private Object implementCollection(Implementor implementor,
                                   int ordinal)

implementResultSet

private Object implementResultSet(Implementor implementor,
                                  int ordinal)

getResultSetAccessorMethod

private String getResultSetAccessorMethod(OJClass clazz)

Returns the name of the method in ResultSet for retrieving a particular type. For example, getInt accesses int, getString accesses String, getObject accesses most other kinds of Object.

toInitcap

private String toInitcap(String s)