Examples of org.apache.derby.iapi.store.access.StaticCompiledOpenConglomInfo

Package org.apache.derby.iapi.store.access

Examples of org.apache.derby.iapi.store.access.StaticCompiledOpenConglomInfo

org.apache.derby.iapi.store.access.StaticCompiledOpenConglomInfo
Information that can be "compiled" once and then used over and over again at execution time. This information is read only by both the caller and the user, thus can be shared by multiple threads/transactions once created. This information is obtained from the getStaticCompiledConglomInfo(conglomid) method call. It can then be used in openConglomerate() and openScan() calls for increased performance. The information is only valid until the next ddl operation is performed on the conglomerate. It is up to the caller to provide an invalidation methodology. The static info would be valid until any ddl was executed on the conglomid, and would be up to the caller to throw away when that happened. This ties in with what language already does for other invalidation of static info. The type of info in this would be containerid and array of format id's from which templates can be created. The info in this object is read only and can be shared among as many threads as necessary.

                  boolean oneRowScan,
                  double optimizerEstimatedRowCount,
                  double optimizerEstimatedCost)
      throws StandardException
  {
        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));
    return new TableScanResultSet(
                conglomId,
                scoci,
                activation,

View Full Code Here

    //prefetching for RR and Serializable when holdability was explicitly set to true. 
    //But starting Cloudscape 10.0 release, in order to be DB2 compatible, holdability is set to true by default.
    //Because of that, we can not continue to disable the prefetching for RR and Serializable, since it causes
    //severe performance degradation - bug 5953.    


        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));
    return new BulkTableScanResultSet(
                conglomId,
                scoci,
                activation,

View Full Code Here

                  boolean oneRowScan,
                  double optimizerEstimatedRowCount,
                  double optimizerEstimatedCost)
      throws StandardException
  {
    StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)
      activation.getPreparedStatement().getSavedObject(scociItem);


    return new MultiProbeTableScanResultSet(
                conglomId,
                scoci,

View Full Code Here

                  long fkIndexConglomId,
                  int fkColArrayItem,
                  int rltItem)
      throws StandardException
  {
        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));
    return new DependentResultSet(
                conglomId,
                scoci,
                activation,

View Full Code Here

    ExpressionClassBuilder acb = (ExpressionClassBuilder) acbi;
    long           conglomNumber = 
                innerTable.getTrulyTheBestAccessPath().
                  getConglomerateDescriptor().
                    getConglomerateNumber();
    StaticCompiledOpenConglomInfo scoci = tc.getStaticCompiledConglomInfo(conglomNumber);
    
    acb.pushThisAsActivation(mb);
    mb.push(conglomNumber);
    mb.push(acb.addItem(scoci));

View Full Code Here

    /* Create the ReferencedColumnsDescriptorImpl which tells which columns
     * come from the index.
     */
    int indexColMapItem = acb.addItem(new ReferencedColumnsDescriptorImpl(getIndexColMapping()));
    long heapConglomNumber = baseCD.getConglomerateNumber();
    StaticCompiledOpenConglomInfo scoci = getLanguageConnectionContext().
                        getTransactionCompile().
                          getStaticCompiledConglomInfo(heapConglomNumber);


    acb.pushGetResultSetFactoryExpression(mb);

View Full Code Here

                  int isolationLevel,
                  double optimizerEstimatedRowCount,
                  double optimizerEstimatedCost)
      throws StandardException
  {
        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));


    return new HashScanResultSet(
                conglomId,
                scoci,

View Full Code Here

                  int isolationLevel,
                  double optimizerEstimatedRowCount,
                  double optimizerEstimatedCost)
      throws StandardException
  {
        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));
    return new DistinctScanResultSet(
                conglomId,
                scoci,
                activation,

View Full Code Here

                  boolean oneRowScan,
                  double optimizerEstimatedRowCount,
                  double optimizerEstimatedCost)
      throws StandardException
  {
        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));
    return new TableScanResultSet(
                conglomId,
                scoci,
                activation,

View Full Code Here

    //prefetching for RR and Serializable when holdability was explicitly set to true. 
    //But starting Cloudscape 10.0 release, in order to be DB2 compatible, holdability is set to true by default.
    //Because of that, we can not continue to disable the prefetching for RR and Serializable, since it causes
    //severe performance degradation - bug 5953.    


        StaticCompiledOpenConglomInfo scoci = (StaticCompiledOpenConglomInfo)(activation.getPreparedStatement().
            getSavedObject(scociItem));
    return new BulkTableScanResultSet(
                conglomId,
                scoci,
                activation,

View Full Code Here

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