Package org.apache.derby.iapi.services.stream

Examples of org.apache.derby.iapi.services.stream.HeaderPrintWriter


      try {
        Method theMethod = theClass.getMethod(methodName,  new Class[0]);

        if (!Modifier.isStatic(theMethod.getModifiers())) {
          HeaderPrintWriter hpw = useDefaultStream(header);
          hpw.printlnWithHeader(theMethod.toString() + " is not static");
          return hpw;
        }

        try {
          return makeValueHPW(theMethod, theMethod.invoke((Object) null,
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      try {
        Field theField = theClass.getField(fieldName);
   
        if (!Modifier.isStatic(theField.getModifiers())) {
          HeaderPrintWriter hpw = useDefaultStream(header);
          hpw.printlnWithHeader(theField.toString() + " is not static");
          return hpw;
        }

        try {
          return makeValueHPW(theField, theField.get((Object) null),
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    if (value instanceof OutputStream)
       return new BasicHeaderPrintWriter((OutputStream) value, header, false, name);
    else if (value instanceof Writer)
       return new BasicHeaderPrintWriter((Writer) value, header, false, name);
   
    HeaderPrintWriter hpw = useDefaultStream(header);

    if (value == null)
      hpw.printlnWithHeader(whereFrom.toString() + "=null");
    else
      hpw.printlnWithHeader(whereFrom.toString() + " instanceof " + value.getClass().getName());

    return hpw;
  }
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    return new BasicHeaderPrintWriter(System.err, header, false, "System.err");
  }

  private HeaderPrintWriter useDefaultStream(PrintWriterGetHeader header, Throwable t) {

    HeaderPrintWriter hpw = useDefaultStream(header);
    hpw.printlnWithHeader(t.toString());
    return hpw;
  }
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                // (ScanManager) cast is occasionally causing a
                // java.lang.ClassCastException.

                if (!(o instanceof ScanManager))
                {
                    HeaderPrintWriter istream = Monitor.getStream();
                   
                    if (o == null)
                        istream.println("next element was null\n");
                    else
                        istream.println("non ScanManager on list: " + o);

                    istream.println(
                        "Current list of open scans: " +  debugOpened());
                }
            }
      ScanManager sm = (ScanManager) o;
            sm.savePosition(conglom, page);
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    filename = filename + ".class";

    File classFile = new File(dir,filename);

    // find the error stream
    HeaderPrintWriter errorStream = Monitor.getStream();

    try {
      FileOutputStream fis = new FileOutputStream(classFile);
      fis.write(bytecode.getArray(),
        bytecode.getOffset(), bytecode.getLength());
      fis.flush();
      if (logMessage) {
        errorStream.printlnWithHeader("Wrote class "+getFullName()+" to file "+classFile.toString()+". Please provide support with the file and the following exception message: "+t);
      }
      fis.close();
    } catch (IOException e) {
      if (SanityManager.DEBUG)
        SanityManager.THROWASSERT("Unable to write .class file");
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                // (ScanManager) cast is occasionally causing a
                // java.lang.ClassCastException.

                if (!(o instanceof ScanManager))
                {
                    HeaderPrintWriter istream = Monitor.getStream();
                   
                    if (o == null)
                        istream.println("next element was null\n");
                    else
                        istream.println("non ScanManager on list: " + o);

                    istream.println(
                        "Current list of open scans: " +  debugOpened());
                }
            }
      ScanManager sm = (ScanManager) o;
            sm.savePosition(conglom, page);
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      preparedStmt.setActivationClass(null);
    }

    try {

      HeaderPrintWriter istream = lcc.getLogStatementText() ? Monitor.getStream() : null;

      /*
      ** For stored prepared statements, we want all
      ** errors, etc in the context of the underlying
      ** EXECUTE STATEMENT statement, so don't push/pop
      ** another statement context unless we don't have
      ** one.  We won't have one if it is an internal
      ** SPS (e.g. jdbcmetadata).
      */
      if (!preparedStmt.isStorable() || lcc.getStatementDepth() == 0)
      {
        // since this is for compilation only, set atomic
        // param to true and timeout param to 0
        statementContext = lcc.pushStatementContext(true, isForReadOnly, getSource(),
                                                            null, false, 0L);
      }



      /*
      ** RESOLVE: we may ultimately wish to pass in
      ** whether we are a jdbc metadata query or not to
      ** get the CompilerContext to make the createDependency()
      ** call a noop.
      */
      CompilerContext cc = lcc.pushCompilerContext(compilationSchema);
     
      if (prepareIsolationLevel !=
        ExecutionContext.UNSPECIFIED_ISOLATION_LEVEL)
      {
        cc.setScanIsolationLevel(prepareIsolationLevel);
      }


      // Look for stored statements that are in a system schema
      // and with a match compilation schema. If so, allow them
      // to compile using internal SQL constructs.

      if (internalSQL ||
        (spsSchema != null) && (spsSchema.isSystemSchema()) &&
          (spsSchema.equals(compilationSchema))) {
            cc.setReliability(CompilerContext.INTERNAL_SQL_LEGAL);
      }

      try
      {
        // Statement logging if lcc.getLogStatementText() is true
        if (istream != null)
        {
          String xactId = lcc.getTransactionExecute().getActiveStateTxIdString();
          istream.printlnWithHeader(LanguageConnectionContext.xidStr +
                        xactId +
                        "), " +
                        LanguageConnectionContext.lccStr +
                          lcc.getInstanceNumber() +
                        "), " +
                        LanguageConnectionContext.dbnameStr +
                          lcc.getDbname() +
                        "), " +
                        LanguageConnectionContext.drdaStr +
                          lcc.getDrdaID() +
                        "), Begin compiling prepared statement: " +
                        getSource() +
                        " :End prepared statement");
        }

        Parser p = cc.getParser();

        cc.setCurrentDependent(preparedStmt);

        //Only top level statements go through here, nested statement
        //will invoke this method from other places
        StatementNode qt = p.parseStatement(statementText, paramDefaults);

        parseTime = getCurrentTimeMillis(lcc);

        if (SanityManager.DEBUG)
        {
          if (SanityManager.DEBUG_ON("DumpParseTree"))
          {
            qt.treePrint();
          }

          if (SanityManager.DEBUG_ON("StopAfterParsing"))
          {
            throw StandardException.newException(SQLState.LANG_STOP_AFTER_PARSING);
          }
        }

        /*
        ** Tell the data dictionary that we are about to do
        ** a bunch of "get" operations that must be consistent with
        ** each other.
        */
       
        DataDictionary dataDictionary = lcc.getDataDictionary();

        int ddMode = dataDictionary == null ? 0 : dataDictionary.startReading(lcc);

        try
        {
          // start a nested transaction -- all locks acquired by bind
          // and optimize will be released when we end the nested
          // transaction.
          lcc.beginNestedTransaction(true);

          qt.bindStatement();
          bindTime = getCurrentTimeMillis(lcc);

          if (SanityManager.DEBUG)
          {
            if (SanityManager.DEBUG_ON("DumpBindTree"))
            {
              qt.treePrint();
            }

            if (SanityManager.DEBUG_ON("StopAfterBinding")) {
              throw StandardException.newException(SQLState.LANG_STOP_AFTER_BINDING);
            }
          }

          //Derby424 - In order to avoid caching select statements referencing
          // any SESSION schema objects (including statements referencing views
          // in SESSION schema), we need to do the SESSION schema object check
          // here. 
          //a specific eg for statement referencing a view in SESSION schema
          //CREATE TABLE t28A (c28 int)
          //INSERT INTO t28A VALUES (280),(281)
          //CREATE VIEW SESSION.t28v1 as select * from t28A
          //SELECT * from SESSION.t28v1 should show contents of view and we
          // should not cache this statement because a user can later define
          // a global temporary table with the same name as the view name.
          //Following demonstrates that
          //DECLARE GLOBAL TEMPORARY TABLE SESSION.t28v1(c21 int, c22 int) not
          //     logged
          //INSERT INTO SESSION.t28v1 VALUES (280,1),(281,2)
          //SELECT * from SESSION.t28v1 should show contents of global temporary
          //table and not the view.  Since this select statement was not cached
          // earlier, it will be compiled again and will go to global temporary
          // table to fetch data. This plan will not be cached either because
          // select statement is using SESSION schema object.
          //
          //Following if statement makes sure that if the statement is
          // referencing SESSION schema objects, then we do not want to cache it.
          // We will remove the entry that was made into the cache for
          //this statement at the beginning of the compile phase.
          //The reason we do this check here rather than later in the compile
          // phase is because for a view, later on, we loose the information that
          // it was referencing SESSION schema because the reference
          //view gets replaced with the actual view definition. Right after
          // binding, we still have the information on the view and that is why
          // we do the check here.
          if (preparedStmt.referencesSessionSchema(qt)) {
            if (foundInCache)
              ((GenericLanguageConnectionContext)lcc).removeStatement(this);
          }
         
          qt.optimizeStatement();

          optimizeTime = getCurrentTimeMillis(lcc);

          // Statement logging if lcc.getLogStatementText() is true
          if (istream != null)
          {
            String xactId = lcc.getTransactionExecute().getActiveStateTxIdString();
            istream.printlnWithHeader(LanguageConnectionContext.xidStr +
                          xactId +
                          "), " +
                          LanguageConnectionContext.lccStr +
                          lcc.getInstanceNumber() +
                          "), " +
                          LanguageConnectionContext.dbnameStr +
                          lcc.getDbname() +
                          "), " +
                          LanguageConnectionContext.drdaStr +
                          lcc.getDrdaID() +
                          "), End compiling prepared statement: " +
                          getSource() +
                          " :End prepared statement");
          }
        }

        catch (StandardException se)
        {
          lcc.commitNestedTransaction();

          // Statement logging if lcc.getLogStatementText() is true
          if (istream != null)
          {
            String xactId = lcc.getTransactionExecute().getActiveStateTxIdString();
            istream.printlnWithHeader(LanguageConnectionContext.xidStr +
                          xactId +
                          "), " +
                          LanguageConnectionContext.lccStr +
                          lcc.getInstanceNumber() +
                          "), " +
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                         getExecutionFactory().getResultSetStatisticsFactory();

        lcc.setRunTimeStatisticsObject(
          rssf.getRunTimeStatistics(activation, this, subqueryTrackingArray));

        HeaderPrintWriter istream = lcc.getLogQueryPlan() ? Monitor.getStream() : null;
        if (istream != null)
        {
          istream.printlnWithHeader(LanguageConnectionContext.xidStr +
                        lcc.getTransactionExecute().getTransactionIdString() +
                        "), " +
                        LanguageConnectionContext.lccStr +
                        lcc.getInstanceNumber() +
                        "), " +
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      String sqlstate = se.getSQLState();
      if ((sqlstate != null) && (sqlstate.equals(SQLState.LOGIN_FAILED)) &&
          (message != null) && (message.equals("Connection refused : java.lang.OutOfMemoryError")))       
        return;

      HeaderPrintWriter errorStream = Monitor.getStream();
      if (errorStream == null) {
        se.printStackTrace();
        return;
      }
      ErrorStringBuilder  errorStringBuilder = new ErrorStringBuilder(errorStream.getHeader());
      errorStringBuilder.append("\nERROR " +  se.getSQLState() + ": "  + se.getMessage() + "\n");
      errorStringBuilder.stackTrace(se);
      errorStream.print(errorStringBuilder.get().toString());
      errorStream.flush();
      errorStringBuilder.reset();

    }
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