Java Doc for GenericAggregateResultSet.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » execute » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.execute 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl
      org.apache.derby.impl.sql.execute.NoPutResultSetImpl
         org.apache.derby.impl.sql.execute.GenericAggregateResultSet

All known Subclasses:   org.apache.derby.impl.sql.execute.ScalarAggregateResultSet,  org.apache.derby.impl.sql.execute.GroupedAggregateResultSet,
GenericAggregateResultSet
abstract class GenericAggregateResultSet extends NoPutResultSetImpl (Code)
Generic aggregation utilities.
author:
   jamie


Field Summary
protected  AggregatorInfoListaggInfoList
    
protected  GenericAggregator[]aggregates
    
protected  NoPutResultSetoriginalSource
    
protected  GeneratedMethodrowAllocator
    
public  NoPutResultSetsource
    

Constructor Summary
 GenericAggregateResultSet(NoPutResultSet s, int aggregateItem, Activation a, GeneratedMethod ra, int resultSetNumber, double optimizerEstimatedRowCount, double optimizerEstimatedCost)
    

Method Summary
public  voidfinish()
    
final protected  ExecIndexRowfinishAggregation(ExecIndexRow row)
     Finish the aggregation for the current row.
final protected  GenericAggregator[]getSortAggregators(AggregatorInfoList list, boolean eliminateDistincts, LanguageConnectionContext lcc, NoPutResultSet inputResultSet)
     For each AggregatorInfo in the list, generate a GenericAggregator and stick it in an array of GenericAggregators.
Parameters:
  list - the list of aggregators to set up
Parameters:
  eliminateDistincts - should distincts be ignored.

Field Detail
aggInfoList
protected AggregatorInfoList aggInfoList(Code)



aggregates
protected GenericAggregator[] aggregates(Code)



originalSource
protected NoPutResultSet originalSource(Code)



rowAllocator
protected GeneratedMethod rowAllocator(Code)



source
public NoPutResultSet source(Code)




Constructor Detail
GenericAggregateResultSet
GenericAggregateResultSet(NoPutResultSet s, int aggregateItem, Activation a, GeneratedMethod ra, int resultSetNumber, double optimizerEstimatedRowCount, double optimizerEstimatedCost) throws StandardException(Code)
Constructor
Parameters:
  a - activation
Parameters:
  ra - row allocator generated method
Parameters:
  resultSetNumber - result set number
Parameters:
  optimizerEstimatedRowCount - optimizer estimated row count
Parameters:
  optimizerEstimatedCost - optimizer estimated cost
exception:
  StandardException - Thrown on error




Method Detail
finish
public void finish() throws StandardException(Code)



finishAggregation
final protected ExecIndexRow finishAggregation(ExecIndexRow row) throws StandardException(Code)
Finish the aggregation for the current row. Basically call finish() on each aggregator on this row. Called once per grouping on a vector aggregate or once per table on a scalar aggregate. If the input row is null, then rowAllocator is invoked to create a new row. That row is then initialized and used for the output of the aggregation.
Parameters:
  row - the row to finish aggregation the result row. If the input row != null, thenthe result row == input row
exception:
  StandardException - Thrown on error



getSortAggregators
final protected GenericAggregator[] getSortAggregators(AggregatorInfoList list, boolean eliminateDistincts, LanguageConnectionContext lcc, NoPutResultSet inputResultSet) throws StandardException(Code)
For each AggregatorInfo in the list, generate a GenericAggregator and stick it in an array of GenericAggregators.
Parameters:
  list - the list of aggregators to set up
Parameters:
  eliminateDistincts - should distincts be ignored. Used to toss out distinct aggregates for a prelimsort.
Parameters:
  lcc - the lcc
Parameters:
  inputResultSet - the incoming result set the array of GenericAggregators
exception:
  StandardException - on error



Fields inherited from org.apache.derby.impl.sql.execute.NoPutResultSetImpl
GeneratedMethod checkGM(Code)(Java Doc)
protected int[] checkNullCols(Code)(Java Doc)
protected ExecRow clonedExecRow(Code)(Java Doc)
protected int cncLen(Code)(Java Doc)
long heapConglomerate(Code)(Java Doc)
protected String indent(Code)(Java Doc)
final public int resultSetNumber(Code)(Java Doc)
protected int sourceDepth(Code)(Java Doc)
protected String subIndent(Code)(Java Doc)
protected TargetResultSet targetResultSet(Code)(Java Doc)

Methods inherited from org.apache.derby.impl.sql.execute.NoPutResultSetImpl
final public void clearCurrentRow()(Code)(Java Doc)
protected void clearOrderableCache(Qualifier[][] qualifiers) throws StandardException(Code)(Java Doc)
public void close() throws StandardException(Code)(Java Doc)
public void closeRowSource()(Code)(Java Doc)
public String getCursorName()(Code)(Java Doc)
public DataValueDescriptor[] getNextRowFromRowSource() throws StandardException(Code)(Java Doc)
public ResultDescription getResultDescription()(Code)(Java Doc)
public FormatableBitSet getValidColumns()(Code)(Java Doc)
public boolean isForUpdate()(Code)(Java Doc)
public void markRowAsDeleted() throws StandardException(Code)(Java Doc)
public boolean needsRowLocation()(Code)(Java Doc)
public boolean needsToClone()(Code)(Java Doc)
public void positionScanAtRowLocation(RowLocation rl) throws StandardException(Code)(Java Doc)
public static String printQualifiers(Qualifier[][] qualifiers)(Code)(Java Doc)
public int resultSetNumber()(Code)(Java Doc)
public void rowLocation(RowLocation rl) throws StandardException(Code)(Java Doc)
protected void setCheckConstraints(GeneratedMethod checkGM)(Code)(Java Doc)
final public void setCurrentRow(ExecRow row)(Code)(Java Doc)
protected void setHeapConglomerate(long heapConglomerate)(Code)(Java Doc)
public void setNeedsRowLocation(boolean needsRowLocation)(Code)(Java Doc)
public void setTargetResultSet(TargetResultSet trs)(Code)(Java Doc)
protected boolean skipRow(ExecRow row) throws StandardException(Code)(Java Doc)
protected boolean skipScan(ExecIndexRow startPosition, ExecIndexRow stopPosition) throws StandardException(Code)(Java Doc)
public void updateRow(ExecRow row) throws StandardException(Code)(Java Doc)

Fields inherited from org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl
protected Activation activation(Code)(Java Doc)
public long beginTime(Code)(Java Doc)
public long closeTime(Code)(Java Doc)
ExecRow compactRow(Code)(Java Doc)
public long constructorTime(Code)(Java Doc)
protected ExecRow currentRow(Code)(Java Doc)
protected long endExecutionTime(Code)(Java Doc)
protected boolean finished(Code)(Java Doc)
protected boolean isOpen(Code)(Java Doc)
protected boolean isTopResultSet(Code)(Java Doc)
protected LanguageConnectionContext lcc(Code)(Java Doc)
public long nextTime(Code)(Java Doc)
public int numOpens(Code)(Java Doc)
public long openTime(Code)(Java Doc)
public double optimizerEstimatedCost(Code)(Java Doc)
public double optimizerEstimatedRowCount(Code)(Java Doc)
ResultDescription resultDescription(Code)(Java Doc)
public int rowsFiltered(Code)(Java Doc)
public int rowsSeen(Code)(Java Doc)
protected long startExecutionTime(Code)(Java Doc)
public NoPutResultSet[] subqueryTrackingArray(Code)(Java Doc)

Methods inherited from org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl
final protected void addWarning(SQLWarning w)(Code)(Java Doc)
protected void attachStatementContext() throws StandardException(Code)(Java Doc)
public void checkCancellationFlag() throws StandardException(Code)(Java Doc)
public boolean checkRowPosition(int isType) throws StandardException(Code)(Java Doc)
public void cleanUp() throws StandardException(Code)(Java Doc)
final protected String dumpTimeStats(String indent, String subIndent)(Code)(Java Doc)
public void finish() throws StandardException(Code)(Java Doc)
final protected void finishAndRTS() throws StandardException(Code)(Java Doc)
public ExecRow getAbsoluteRow(int row) throws StandardException(Code)(Java Doc)
final public Activation getActivation()(Code)(Java Doc)
public ResultSet getAutoGeneratedKeysResultset()(Code)(Java Doc)
public Timestamp getBeginExecutionTimestamp()(Code)(Java Doc)
protected ExecRow getCompactRow(ExecRow candidate, FormatableBitSet accessedCols, FormatableBitSet otherCols, boolean isKeyed) throws StandardException(Code)(Java Doc)
final protected long getCurrentTimeMillis()(Code)(Java Doc)
final protected long getElapsedMillis(long beginTime)(Code)(Java Doc)
public Timestamp getEndExecutionTimestamp()(Code)(Java Doc)
public double getEstimatedRowCount()(Code)(Java Doc)
public long getExecuteTime()(Code)(Java Doc)
final ExecutionFactory getExecutionFactory()(Code)(Java Doc)
public ExecRow getFirstRow() throws StandardException(Code)(Java Doc)
final protected LanguageConnectionContext getLanguageConnectionContext()(Code)(Java Doc)
public ExecRow getLastRow() throws StandardException(Code)(Java Doc)
final public ExecRow getNextRow() throws StandardException(Code)(Java Doc)
abstract public ExecRow getNextRowCore() throws StandardException(Code)(Java Doc)
public int getPointOfAttachment()(Code)(Java Doc)
public ExecRow getPreviousRow() throws StandardException(Code)(Java Doc)
public ExecRow getRelativeRow(int row) throws StandardException(Code)(Java Doc)
public ResultDescription getResultDescription()(Code)(Java Doc)
public int getRowNumber()(Code)(Java Doc)
public int getScanIsolationLevel()(Code)(Java Doc)
final public NoPutResultSet[] getSubqueryTrackingArray(int numSubqueries)(Code)(Java Doc)
final TransactionController getTransactionController()(Code)(Java Doc)
final public SQLWarning getWarnings()(Code)(Java Doc)
public boolean isClosed()(Code)(Java Doc)
public boolean isForUpdate()(Code)(Java Doc)
public void markAsTopResultSet()(Code)(Java Doc)
final public int modifiedRowCount()(Code)(Java Doc)
final public void open() throws StandardException(Code)(Java Doc)
abstract public void openCore() throws StandardException(Code)(Java Doc)
public void reopenCore() throws StandardException(Code)(Java Doc)
public boolean requiresRelocking()(Code)(Java Doc)
public int resultSetNumber()(Code)(Java Doc)
public boolean returnsRows()(Code)(Java Doc)
public ExecRow setAfterLastRow() throws StandardException(Code)(Java Doc)
public ExecRow setBeforeFirstRow() throws StandardException(Code)(Java Doc)
protected ExecRow setCompactRow(ExecRow candidateRow, ExecRow compactRow)(Code)(Java Doc)
final protected void setCompatRow(ExecRow compactRow, Object[] sourceRow)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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