Examples of org.apache.derby.iapi.services.loader.GeneratedClass

Package org.apache.derby.iapi.services.loader

Examples of org.apache.derby.iapi.services.loader.GeneratedClass

org.apache.derby.iapi.services.loader.GeneratedClass
A meta-class that represents a generated class. (Similar to java.lang.Class).

    LanguageConnectionContext lcc =
      (LanguageConnectionContext) ContextService.getContext
                                          (LanguageConnectionContext.CONTEXT_ID);
    ClassFactory classFactory = lcc.getLanguageConnectionFactory().getClassFactory();


    GeneratedClass gc = classFactory.loadGeneratedClass(className, byteCode);


    /*
    ** No special try catch logic to write out bad classes
    ** here.  We don't expect any problems, and in any 
    ** event, we don't have the class builder available

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    LanguageConnectionContext lcc =
      (LanguageConnectionContext) ContextService.getContext
                                          (LanguageConnectionContext.CONTEXT_ID);
    ClassFactory classFactory = lcc.getLanguageConnectionFactory().getClassFactory();


    GeneratedClass gc = classFactory.loadGeneratedClass(className, byteCode);


    /*
    ** No special try catch logic to write out bad classes
    ** here.  We don't expect any problems, and in any 
    ** event, we don't have the class builder available

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            {
              throw StandardException.newException(SQLState.LANG_STOP_AFTER_OPTIMIZING);
            }
          }


          GeneratedClass ac = qt.generate(preparedStmt.getByteCodeSaver());


          generateTime = getCurrentTimeMillis(lcc);
          /* endTimestamp only meaningful if generateTime is meaningful.
           * generateTime is meaningful if STATISTICS TIMING is ON.
           */

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   *
   * @exception StandardException thrown if finished.
   */
  public synchronized Activation  getActivation(LanguageConnectionContext lcc, boolean scrollable) throws StandardException 
  {
    GeneratedClass gc = getActivationClass();


    if (gc == null) {
      rePrepare(lcc);
      gc = getActivationClass();
    }

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        //bug 4579 - gcDuringGetMetaData will be null if this is the first time
        //getMetaData call is made.
        //Second check - if the statement was revalidated since last getMetaData call,
        //then gcDuringGetMetaData wouldn't match with current generated class name


                GeneratedClass currAc = null;
                ResultDescription resd = null;


                synchronized(execp) {
                    // DERBY-3823 Some other thread may be repreparing
                    do {
                        while (!execp.upToDate()) {
                            execp.rePrepare(lcc);
                        }


                        currAc = execp.getActivationClass();
                        resd = execp.getResultDescription();
                    } while (currAc == null);
                }


                if (gcDuringGetMetaData == null ||
                        !gcDuringGetMetaData.equals(currAc.getName())) {
                    rMetaData = null;
                    gcDuringGetMetaData = currAc.getName();
                }


                if (rMetaData == null && resd != null) {
                    // Internally, the result description has information
                    // which is used for insert, update and delete statements

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        GenericPreparedStatement ps = cs.getPreparedStatement();


        synchronized (ps) {
            if (ps.upToDate()) {
                GeneratedClass ac = ps.getActivationClass();


                // Check to see if the statement was prepared before some change
                // in the class loading set. If this is the case then force it to be invalid
                int currentClasses =
                        getLanguageConnectionFactory().getClassFactory().getClassLoaderVersion();


                if (ac.getClassLoaderVersion() != currentClasses) {
                    ps.makeInvalid(DependencyManager.INTERNAL_RECOMPILE_REQUEST, this);
                }


                // note that the PreparedStatement is not kept in the cache. This is because
                // having items kept in the cache that ultimately are held onto by

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    GenericPreparedStatement ps = cs.getPreparedStatement();


    synchronized (ps) {
      if (ps.upToDate()) {
        GeneratedClass ac = ps.getActivationClass();


        // Check to see if the statement was prepared before some change
        // in the class loading set. If this is the case then force it to be invalid
        int currentClasses =
            getLanguageConnectionFactory().getClassFactory().getClassLoaderVersion();


        if (ac.getClassLoaderVersion() != currentClasses) {
          ps.makeInvalid(DependencyManager.INTERNAL_RECOMPILE_REQUEST, this);
        }


        // note that the PreparedStatement is not kept in the cache. This is because
        // having items kept in the cache that ultimately are held onto by

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Related Classes of org.apache.derby.iapi.services.loader.GeneratedClass

org.apache.derby.impl.jdbc.EmbedPreparedStatement

org.apache.derby.impl.sql.compile.ExecSPSNode

org.apache.derby.impl.sql.compile.StatementNode

org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext

org.apache.derby.impl.sql.GenericActivationHolder

org.apache.derby.impl.sql.GenericPreparedStatement

org.apache.derby.impl.sql.GenericStatement

org.apache.derby.impl.sql.GenericStorablePreparedStatement

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