Examples of org.apache.derby.iapi.services.uuid.UUIDFactory

Package org.apache.derby.iapi.services.uuid

Examples of org.apache.derby.iapi.services.uuid.UUIDFactory

org.apache.derby.iapi.services.uuid.UUIDFactory
Generates and recreates unique identifiers. An example of such an identifier is:
```
 E4900B90-DA0E-11d0-BAFE-0060973F0942 
```
These resemble DCE UUIDs, but use a different implementation.
The string format is designed to be the same as the string format produced by Microsoft's UUIDGEN program, although at present the bit fields are probably not the same.

  private void initializeCoreInfo()
    throws StandardException
  {
    TabInfoImpl[] lcoreInfo = coreInfo = new TabInfoImpl[NUM_CORE];


    UUIDFactory luuidFactory = uuidFactory;


    lcoreInfo[SYSTABLES_CORE_NUM] = 
      new TabInfoImpl(new SYSTABLESRowFactory(luuidFactory, exFactory, dvf));
    lcoreInfo[SYSCOLUMNS_CORE_NUM] = 
      new TabInfoImpl(new SYSCOLUMNSRowFactory(luuidFactory, exFactory, dvf));

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      // load it into the array. There is a small chance that
      // two threads will do this at the same time. The code will
      // work properly in that case, since storing a reference
      // is atomic (although we could get extra object instantiation
      // if two threads come through here at the same time.
      UUIDFactory luuidFactory = uuidFactory;


      switch (catalogNumber)
      {
        case SYSCONSTRAINTS_CATALOG_NUM:
        retval = new TabInfoImpl(new SYSCONSTRAINTSRowFactory(

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  public void  boot(boolean create, Properties startParams)
    throws StandardException
  {
    // Find the UUID factory.
    UUIDFactory uuidFactory = 
            Monitor.getMonitor().getUUIDFactory();
    
    // Make a UUID that identifies this conglomerate's format.
    formatUUID = uuidFactory.recreateUUID(FORMATUUIDSTRING);
  }

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    this.indexable = indexable;
    this.indexRowGenerator = indexRowGenerator;
    this.forConstraint = forConstraint;
    if (uuid == null)
    {
      UUIDFactory uuidFactory = Monitor.getMonitor().getUUIDFactory();
      uuid = uuidFactory.createUUID();
    }
    this.uuid = uuid;
    this.tableID = tableID;
    this.schemaID = schemaID;
  }

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  // constructors
  //


  GenericPreparedStatement() {
    /* Get the UUID for this prepared statement */
    UUIDFactory uuidFactory = 
      Monitor.getMonitor().getUUIDFactory();


    UUIDValue = uuidFactory.createUUID();
    UUIDString = UUIDValue.toString();
    spsAction = false;
  }

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    if ((databaseID = (UUID) tc.getProperty(DataDictionary.DATABASE_ID)) == null) {


      // no property defined in the Transaction set
      // this could be an upgrade, see if it's stored in the service set


      UUIDFactory  uuidFactory  = Monitor.getMonitor().getUUIDFactory();


      
      upgradeID = startParams.getProperty(DataDictionary.DATABASE_ID);
      if (upgradeID == null )
      {
        // just create one
        databaseID = uuidFactory.createUUID();
      } else {
        databaseID = uuidFactory.recreateUUID(upgradeID);
      }


      tc.setProperty(DataDictionary.DATABASE_ID, databaseID, true);
    }

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  public void  boot(boolean create, Properties startParams)
    throws StandardException
  {
    // Find the UUID factory.
    UUIDFactory uuidFactory = 
            Monitor.getMonitor().getUUIDFactory();
    
    // Make a UUID that identifies this conglomerate's format.
    formatUUID = uuidFactory.recreateUUID(FORMATUUIDSTRING);
  }

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            throws StandardException {
        TransactionController tc = lcc.getTransactionExecute();
        trace(1, "writing new stats (xid=" + tc.getTransactionIdString() + ")");
        UUID table = td.getUUID();
        DataDictionary dd = lcc.getDataDictionary();
        UUIDFactory uf = dd.getUUIDFactory();


        // Update the heap row count estimate.
        setHeapRowEstimate(tc, td.getHeapConglomerateId(), numRows);
        // Drop existing index statistics for this index.
        if (!lcc.dataDictionaryInWriteMode()) {
            dd.startWriting(lcc);
        }
        dd.dropStatisticsDescriptors(table, index, tc);


        boolean conglomerateGone = false; // invalidation control flag
        // Don't write statistics if the table is empty.
        if (numRows == 0) {
            trace(2, "empty table, no stats written");
        } else {
            // Construct and add the statistics entries.
            for (int i=0; i < cardinality.length; i++) {
                StatisticsDescriptor statDesc = new StatisticsDescriptor(
                        dd, uf.createUUID(), index, table, "I",
                     new StatisticsImpl(numRows, cardinality[i]),
                     i+1);
                dd.addDescriptor(statDesc, null,
                        DataDictionary.SYSSTATISTICS_CATALOG_NUM, true, tc);
            }

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    jarCPath = jarClassPath(getClass());


    dataDirectory = startParams.getProperty(PersistentService.ROOT);


    UUIDFactory uf = Monitor.getMonitor().getUUIDFactory();


    identifier = uf.createUUID();


        PersistentService ps = Monitor.getMonitor().getServiceType(this);


        try
        {

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    lcc.addActivation(this);


    isValid = true;


    /* Get the UUID for this activation */
    UUIDFactory uuidFactory =
      Monitor.getMonitor().getUUIDFactory();


    UUIDValue = uuidFactory.createUUID();
    UUIDString = UUIDValue.toString();
  }

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Related Classes of org.apache.derby.iapi.services.uuid.UUIDFactory

org.apache.derby.iapi.sql.dictionary.CatalogRowFactory

org.apache.derby.iapi.sql.dictionary.ConglomerateDescriptor

org.apache.derby.impl.db.BasicDatabase

org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl

org.apache.derby.impl.sql.catalog.DataDictionaryImpl

org.apache.derby.impl.sql.catalog.SYSCOLUMNSRowFactory

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

org.apache.derby.impl.sql.execute.BaseActivation

org.apache.derby.impl.sql.execute.CreateConstraintConstantAction

org.apache.derby.impl.sql.GenericPreparedStatement

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