Examples of org.apache.derby.iapi.sql.depend.Dependency

Package org.apache.derby.iapi.sql.depend

Examples of org.apache.derby.iapi.sql.depend.Dependency

org.apache.derby.iapi.sql.depend.Dependency
A dependency represents a reliance of the dependent on the provider for some information the dependent contains or uses. In Language, the usual case is a prepared statement using information about a schema object in its executable form. It needs to be notified if the schema object changes, so that it can recompile against the new information.

          List depsSList = (List) dependents.get(depKeys[i]);


          for (ListIterator depsIterator = depsSList.listIterator();
             depsIterator.hasNext(); ) 
          {
            Dependency dy = (Dependency)depsIterator.next();


            if (! foundInMemory)
            {
              debugBuf.append("In Memory Dependencies:\n");
              foundInMemory = true;
            }


            debugBuf.append(dy.getDependent().toString() +
                    ", type " + 
                    dy.getDependent().getClassType() +
                    ", " +
                    " is dependent on " +
                    dy.getProvider().getObjectName() + 
                    ", type " +
                    dy.getProvider().getClassType() +
                    "\n");
          }
        }


        /* Record the in memory dependencies */
        Enumeration provs = providers.keys();
        UUID[]    provKeys = new UUID[providers.size()];
        for (int i = 0; provs.hasMoreElements(); i++)
        {
          /*
          ** Get all the keys and sort them, so that they will always
          ** be printed in the same order (we have tests that canonize
          ** the order of printing the dependencies, and since the key
          ** is a UUID, the order they are returned from
          ** hasMoreElements() changes from run to run).
          */
          provKeys[i] = (UUID) provs.nextElement();
        }


        /* Do a bubble sort - there aren't likely to be many elements */
        bubbleSort(provKeys);


        /* Iterate through the sorted keys */
        for (int i = 0; i < provKeys.length; i++)
        {
          List depsSList = (List) providers.get(provKeys[i]);


          for (ListIterator depsIterator = depsSList.listIterator();
            depsIterator.hasNext(); ) 
          {


            Dependency dy = (Dependency)depsIterator.next();


            if (! foundInMemory)
            {
              debugBuf.append("In Memory Dependencies:\n");
              foundInMemory = true;
            }


            debugBuf.append( 
                    dy.getProvider().toString() + 
                    ", type " +
                    dy.getProvider().getClassType() +
                    ", provides for " +
                    dy.getDependent().getObjectName() +
                    ", type " +
                    dy.getDependent().getClassType() +
                    "\n");
          }
        }
        /* Record the stored dependencies in sorted order to avoid
           ordering problems in canons. Also the dependencyDescriptor.getUUID()

View Full Code Here

      UUID  provKey = dy.getProvider().getObjectID();
      UUID  depKey = dy.getDependent().getObjectID();


      for (ListIterator depsIT = deps.listIterator();  depsIT.hasNext(); )
      {
        Dependency curDY = (Dependency)depsIT.next();
        if (curDY.getProvider().getObjectID().equals(provKey) &&
          curDY.getDependent().getObjectID().equals(depKey))
        {
          return false;
        }
      }

View Full Code Here

    {
      DependencyManager dmgr = lcc.getDataDictionary().getDependencyManager();


      for (Iterator iterator = dependencies.iterator(); iterator.hasNext(); ) 
      {
        Dependency dy = (Dependency) iterator.next();
        dmgr.clearInMemoryDependency(dy);
      }


      dependencies = null;
    }

View Full Code Here

    {
      DependencyManager dmgr = lcc.getDataDictionary().getDependencyManager();


      for (Iterator<Dependency> iterator = dependencies.iterator(); iterator.hasNext(); ) 
      {
        Dependency dy = iterator.next();
        dmgr.clearInMemoryDependency(dy);
      }


      dependencies = null;
    }

View Full Code Here

     * @see #addStoredDependency
     */
    private synchronized void addInMemoryDependency(Dependent d, Provider p,
                                                    ContextManager cm)
            throws StandardException {
        Dependency dy = new BasicDependency(d, p);


        // Duplicate dependencies are not added to the lists.
        // If we find that the dependency we are trying to add in
        // one list is a duplicate, then it should be a duplicate in the
        // other list.

View Full Code Here

      // entries from this list. 
      for (int ei = list.size() - 1; ei >= 0; ei--)
      {
        if (ei >= list.size())
          continue;
        Dependency dependency = list.get(ei);


        Dependent dep = dependency.getDependent();


        if (affectedCols != null)
        {
          TableDescriptor td = (TableDescriptor) dependency.getProvider();
          FormatableBitSet providingCols = td.getReferencedColumnMap();
          if (providingCols == null)
          {
            if (dep instanceof ViewDescriptor)
            {

View Full Code Here

            if (deps != null) {
                Iterator depsIter = deps.iterator();
                // go through the list notifying providers to remove
                // the dependency from their lists
                while (depsIter.hasNext()) {
                    Dependency dy = (Dependency)depsIter.next();
                    clearProviderDependency(dy.getProviderKey(), dy);
                }
                dependents.remove(id);
            }
        }
    }

View Full Code Here

      UUID  provKey = dy.getProvider().getObjectID();
      UUID  depKey = dy.getDependent().getObjectID();


      for (ListIterator<Dependency> depsIT = deps.listIterator();  depsIT.hasNext(); )
      {
        Dependency curDY = depsIT.next();
        if (curDY.getProvider().getObjectID().equals(provKey) &&
          curDY.getDependent().getObjectID().equals(depKey))
        {
          return false;
        }
      }

View Full Code Here

  private void addDependency(Dependent d, Provider p, ContextManager cm, 
      TransactionController tc) throws StandardException {


    synchronized(this)
    {
      Dependency dy = new BasicDependency(d, p);


      /* Dependencies are either in-memory or stored, but not both */
      if (! d.isPersistent() || ! p.isPersistent())
      {
        /* Duplicate dependencies are not added to the lists.

View Full Code Here

      // entries from this list. 
      for (int ei = list.size() - 1; ei >= 0; ei--)
      {
        if (ei >= list.size())
          continue;
        Dependency dependency = (Dependency) list.get(ei);


        Dependent dep = dependency.getDependent();


        if (affectedCols != null)
        {
          TableDescriptor td = (TableDescriptor) dependency.getProvider();
          FormatableBitSet providingCols = td.getReferencedColumnMap();
          if (providingCols == null)
          {
            if (dep instanceof ViewDescriptor)
            {

View Full Code Here

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Related Classes of org.apache.derby.iapi.sql.depend.Dependency

org.apache.derby.impl.sql.conn.GenericStatementContext

org.apache.derby.impl.sql.depend.BasicDependencyManager

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