net.sf.farrago.session
Class FarragoSessionAnalyzedSql

java.lang.Object
  net.sf.farrago.session.FarragoSessionAnalyzedSql

public class FarragoSessionAnalyzedSql
extends Object

FarragoSessionAnalyzedSql contains the results of the analyzeSql call used while processing SQL expressions contained by DDL statements such as CREATE VIEW and CREATE FUNCTION.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/session/FarragoSessionAnalyzedSql.java#15 $

Author:

John V. Sichi

Field Summary

String	canonicalString The text of the SQL expression after expansion by the validator.
List<Set<RelColumnOrigin>>	columnOrigins Information about column origins, in same order as resultType row; null if expression is not a query.
Set<CwmModelElement>	dependencies Set of catalog objects on which the expression directly depends.
boolean	hasDynamicParams True if the expression contains dynamic parameter markers.
boolean	hasTopLevelOrderBy True if the expression is a query with a top-level ORDER BY.
boolean	optimized True if post-optimization analysis was requested.
RelDataType	paramRowType Metadata for parameters used as input to the expression.
RelDataType	resultType Metadata for result set returned when the expression is executed: a row type for a query expression, or a single type for a non-query expression.
double	rowCount Estimated number of rows returned; invalid if expression is not a query, or no optimization was requested.

Constructor Summary

FarragoSessionAnalyzedSql()

Method Summary

void	setModality(FemAbstractColumnSet colSet)
void	setResultType(RelDataType resultType)

Methods inherited from class java.lang.Object

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

Field Detail

optimized

public boolean optimized

True if post-optimization analysis was requested. If false, some fields noted below are invalid.

canonicalString

public String canonicalString

The text of the SQL expression after expansion by the validator. This contains no context-dependent information (e.g. all objects are fully qualified), so it can be stored in the catalog.

dependencies

public Set<CwmModelElement> dependencies

Set of catalog objects on which the expression directly depends.

resultType

public RelDataType resultType

Metadata for result set returned when the expression is executed: a row type for a query expression, or a single type for a non-query expression.

paramRowType

public RelDataType paramRowType

Metadata for parameters used as input to the expression.

hasTopLevelOrderBy

public boolean hasTopLevelOrderBy

True if the expression is a query with a top-level ORDER BY.

hasDynamicParams

public boolean hasDynamicParams

True if the expression contains dynamic parameter markers.

columnOrigins

public List<Set<RelColumnOrigin>> columnOrigins

Information about column origins, in same order as resultType row; null if expression is not a query.

rowCount

public double rowCount

Estimated number of rows returned; invalid if expression is not a query, or no optimization was requested.

Constructor Detail

FarragoSessionAnalyzedSql

public FarragoSessionAnalyzedSql()

Method Detail

setResultType

public void setResultType(RelDataType resultType)

setModality

public void setModality(FemAbstractColumnSet colSet)