org.eigenbase.oj.stmt
Class PreparedExecution

java.lang.Object
  org.eigenbase.oj.stmt.PreparedExecution

All Implemented Interfaces:

PreparedResult

public class PreparedExecution
extends Object
implements PreparedResult

PreparedExecution is a PreparedResult of a statement for which Java code was generated by preparation.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/oj/stmt/PreparedExecution.java#12 $

Author:

John V. Sichi

Field Summary

private BoundMethod	boundMethod
private boolean	isDml
private ParseTree	parseTree
private RelNode	rootRel
private RelDataType	rowType
private TableModificationRelBase.Operation	tableModOp

Constructor Summary

PreparedExecution(ParseTree parseTree, RelNode rootRel, RelDataType rowType, boolean isDml, TableModificationRelBase.Operation tableModOp, BoundMethod boundMethod)

Method Summary

Object	execute() Executes the prepared result.
String	getCode()
Method	getMethod()
RelDataType	getPhysicalRowType() Returns the physical row type of this prepared statement.
RelNode	getRootRel()
TableModificationRelBase.Operation	getTableModOp()
boolean	isDml()
void	setArgs(Object[] args)

Methods inherited from class java.lang.Object

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

Field Detail

parseTree

private final ParseTree parseTree

rootRel

private final RelNode rootRel

rowType

private final RelDataType rowType

isDml

private final boolean isDml

tableModOp

private final TableModificationRelBase.Operation tableModOp

boundMethod

private final BoundMethod boundMethod

Constructor Detail

PreparedExecution

PreparedExecution(ParseTree parseTree,
                  RelNode rootRel,
                  RelDataType rowType,
                  boolean isDml,
                  TableModificationRelBase.Operation tableModOp,
                  BoundMethod boundMethod)

Method Detail

getCode

public String getCode()

Specified by:

getCode in interface PreparedResult

Returns:

the code generated by preparation

isDml

public boolean isDml()

Specified by:

isDml in interface PreparedResult

Returns:

true iff this result is for a DML statement, in which case the result set is one row with one column containing the number of rows affected.

getTableModOp

public TableModificationRelBase.Operation getTableModOp()

Specified by:

getTableModOp in interface PreparedResult

Returns:

the table modification operation corresponding to this statement if it is a table modification statement; otherwise null

getPhysicalRowType

public RelDataType getPhysicalRowType()

Returns the physical row type of this prepared statement. May not be identical to the row type returned by the validator; for example, the field names may have been made unique.

getMethod

public Method getMethod()

getRootRel

public RelNode getRootRel()

execute

public Object execute()

Description copied from interface: PreparedResult

Executes the prepared result.

Specified by:

execute in interface PreparedResult

Returns:

producer of rows resulting from execution

setArgs

public void setArgs(Object[] args)