Examples of org.apache.derby.catalog.Statistics

org.apache.derby.catalog.Statistics

This interface is used in the column SYS.SYSSTATISTICS.STATISTICS. It encapsulates information collected by the UPDATE STATISTICS command and is used internally by the Cloudscape optimizer to estimate cost and selectivity of different query plans.

  {
    String myID = null, referenceID = null, tableID = null;
    String statName = null, colMap = null, statType = null;
    Timestamp updateTime = null;
    int columnCount = 0;
    Statistics statisticsObject = null;
    boolean validStat = false;
    ExecRow row = getExecutionFactory().getValueRow(SYSSTATISTICS_COLUMN_COUNT);
    
    if (td != null)
    {

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    col = row.getColumn(SYSSTATISTICS_COLCOUNT);
    int columnCount = col.getInt();


    /* 8th column is statistics itself */
    col = row.getColumn(SYSSTATISTICS_STAT);
    Statistics stat = (Statistics)col.getObject();


    return new StatisticsDescriptor(dd, statUUID, statReferenceUUID,
                       statTableUUID, // statName, colMap,
                       statType, stat, columnCount);
  }

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  {
    String myID = null, referenceID = null, tableID = null;
    String statName = null, colMap = null, statType = null;
    Timestamp updateTime = null;
    int columnCount = 0;
    Statistics statisticsObject = null;
    boolean validStat = false;
    ExecRow row = getExecutionFactory().getValueRow(SYSSTATISTICS_COLUMN_COUNT);
    
    if (td != null)
    {

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    col = row.getColumn(SYSSTATISTICS_COLCOUNT);
    int columnCount = col.getInt();


    /* 8th column is statistics itself */
    col = row.getColumn(SYSSTATISTICS_STAT);
    Statistics stat = (Statistics)col.getObject();


    return new StatisticsDescriptor(dd, statUUID, statReferenceUUID,
                       statTableUUID, // statName, colMap,
                       statType, stat, columnCount);
  }

View Full Code Here

  {
    String myID = null, referenceID = null, tableID = null;
    String statName = null, colMap = null, statType = null;
    Timestamp updateTime = null;
    int columnCount = 0;
    Statistics statisticsObject = null;
    boolean validStat = false;
    ExecRow row = getExecutionFactory().getValueRow(SYSSTATISTICS_COLUMN_COUNT);
    
    if (td != null)
    {

View Full Code Here

    col = row.getColumn(SYSSTATISTICS_COLCOUNT);
    int columnCount = col.getInt();


    /* 8th column is statistics itself */
    col = row.getColumn(SYSSTATISTICS_STAT);
    Statistics stat = (Statistics)col.getObject();


    return new StatisticsDescriptor(dd, statUUID, statReferenceUUID,
                       statTableUUID, // statName, colMap,
                       statType, stat, columnCount);
  }

View Full Code Here

  {
    String myID = null, referenceID = null, tableID = null;
    String statName = null, colMap = null, statType = null;
    Timestamp updateTime = null;
    int columnCount = 0;
    Statistics statisticsObject = null;
    boolean validStat = false;
    ExecRow row = getExecutionFactory().getValueRow(SYSSTATISTICS_COLUMN_COUNT);
    
    if (td != null)
    {

View Full Code Here

    col = row.getColumn(SYSSTATISTICS_COLCOUNT);
    int columnCount = col.getInt();


    /* 8th column is statistics itself */
    col = row.getColumn(SYSSTATISTICS_STAT);
    Statistics stat = (Statistics)col.getObject();


    return new StatisticsDescriptor(dd, statUUID, statReferenceUUID,
                       statTableUUID, // statName, colMap,
                       statType, stat, columnCount);
  }

View Full Code Here

    col = row.getColumn(SYSSTATISTICS_COLCOUNT);
    int columnCount = col.getInt();


    /* 8th column is statistics itself */
    col = row.getColumn(SYSSTATISTICS_STAT);
    Statistics stat = (Statistics)col.getObject();


    return new StatisticsDescriptor(dd, statUUID, statReferenceUUID,
                       statTableUUID, // statName, colMap,
                       statType, stat, columnCount);
  }

View Full Code Here

  {
    String myID = null, referenceID = null, tableID = null;
    String statName = null, colMap = null, statType = null;
    Timestamp updateTime = null;
    int columnCount = 0;
    Statistics statisticsObject = null;
    boolean validStat = false;
    ExecRow row = getExecutionFactory().getValueRow(SYSSTATISTICS_COLUMN_COUNT);
    
    if (td != null)
    {

View Full Code Here

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Related Classes of org.apache.derby.catalog.Statistics

org.apache.derby.impl.sql.catalog.SYSSTATISTICSRowFactory

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