net.sf.farrago.namespace.ftrs
Class FtrsDataServer.FtrsRelMetadataProvider

java.lang.Object
  org.eigenbase.rel.metadata.ReflectiveRelMetadataProvider
      net.sf.farrago.namespace.ftrs.FtrsDataServer.FtrsRelMetadataProvider

All Implemented Interfaces:

RelMetadataProvider, ReflectiveVisitor

Enclosing class:

FtrsDataServer

public static class FtrsDataServer.FtrsRelMetadataProvider
extends ReflectiveRelMetadataProvider

Field Summary

private FtrsDataServer.FtrsColumnMetadata	columnMd
private FarragoRepos	repos

Constructor Summary

FtrsDataServer.FtrsRelMetadataProvider(FarragoRepos repos)

Method Summary

Boolean	areColumnsUnique(FtrsIndexScanRel rel, BitSet columns, boolean ignoreNulls)
Double	getDistinctRowCount(FtrsIndexScanRel rel, BitSet groupKey, RexNode predicate)
Double	getPopulationSize(FtrsIndexScanRel rel, BitSet groupKey)
Set<BitSet>	getUniqueKeys(FtrsIndexScanRel rel, boolean ignoreNulls)

Methods inherited from class org.eigenbase.rel.metadata.ReflectiveRelMetadataProvider

getRelMetadata, mapParameterTypes

Methods inherited from class java.lang.Object

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

Field Detail

repos

private final FarragoRepos repos

columnMd

private final FtrsDataServer.FtrsColumnMetadata columnMd

Constructor Detail

FtrsDataServer.FtrsRelMetadataProvider

FtrsDataServer.FtrsRelMetadataProvider(FarragoRepos repos)

Method Detail

getDistinctRowCount

public Double getDistinctRowCount(FtrsIndexScanRel rel,
                                  BitSet groupKey,
                                  RexNode predicate)

getPopulationSize

public Double getPopulationSize(FtrsIndexScanRel rel,
                                BitSet groupKey)

getUniqueKeys

public Set<BitSet> getUniqueKeys(FtrsIndexScanRel rel,
                                 boolean ignoreNulls)

areColumnsUnique

public Boolean areColumnsUnique(FtrsIndexScanRel rel,
                                BitSet columns,
                                boolean ignoreNulls)