示例#1
0
 @Override
 public ParseTree visitChildInternal(RelNode child, int ordinal) {
   final Convention convention = child.getConvention();
   if (!(child instanceof JavaRel)) {
     throw Util.newInternal(
         "Relational expression '"
             + child
             + "' has '"
             + convention
             + "' calling convention, so must implement interface "
             + JavaRel.class);
   }
   JavaRel javaRel = (JavaRel) child;
   final ParseTree p = javaRel.implement(this);
   if ((convention == CallingConvention.JAVA) && (p != null)) {
     throw Util.newInternal(
         "Relational expression '"
             + child
             + "' returned '"
             + p
             + " on implement, but should have "
             + "returned null, because it has JAVA calling-convention. "
             + "(Note that similar calling-conventions, such as "
             + "Iterator, must return a value.)");
   }
   return p;
 }
示例#2
0
 /**
  * Creates a JavaRelImplementor
  *
  * @param rexBuilder Builder for {@link RexNode}s
  * @param implementorTable Table of implementations of operators. Must not be null
  */
 public JavaRelImplementor(RexBuilder rexBuilder, OJRexImplementorTable implementorTable) {
   super(rexBuilder);
   Util.pre(rexBuilder != null, "rexBuilder != null");
   Util.pre(implementorTable != null, "implementorTable != null");
   this.implementorTable = implementorTable;
   nextVariableId = 0;
 }
示例#3
0
 /**
  * Creates an expression which references correlating variable <code>
  * correlName</code> from the context of <code>rel</code>. For example, if <code>correlName</code>
  * is set by the 1st child of <code>rel</code>'s 2nd child, then this method returns <code>
  * $input2.$input1</code>.
  */
 public Expression makeReference(String correlName, RelNode rel) {
   JavaFrame frame = (JavaFrame) mapCorrel2Frame.get(correlName);
   assert (frame != null);
   assert Util.equal(frame.rel.getCorrelVariable(), correlName);
   assert (frame.hasVariable());
   return frame.getVariable();
 }
示例#4
0
 private void bindDeferred(JavaFrame frame, final RelNode rel) {
   final StatementList statementList = getStatementList();
   if (frame.bind == null) {
     // this relational expression has not bound itself, so we presume
     // that we can call its implementSelf() method
     if (!(rel instanceof JavaSelfRel)) {
       throw Util.newInternal(
           "In order to bind-deferred, a "
               + "relational expression must implement JavaSelfRel: "
               + rel);
     }
     final JavaSelfRel selfRel = (JavaSelfRel) rel;
     LazyBind lazyBind =
         new LazyBind(
             newVariable(),
             statementList,
             getTypeFactory(),
             rel.getRowType(),
             new VariableInitializerThunk() {
               public VariableInitializer getInitializer() {
                 return selfRel.implementSelf(JavaRelImplementor.this);
               }
             });
     bind(rel, lazyBind);
   } else if ((frame.bind instanceof LazyBind)
       && (((LazyBind) frame.bind).statementList != statementList)) {
     // Frame is already bound, but to a variable declared in a different
     // scope. Re-bind it.
     final LazyBind lazyBind = (LazyBind) frame.bind;
     lazyBind.statementList = statementList;
     lazyBind.bound = false;
   }
 }
示例#5
0
 /**
  * Records the fact that instances of <code>rel</code> are available via <code>bind</code> (which
  * may be eager or lazy).
  */
 private void bind(RelNode rel, Bind bind) {
   tracer.log(Level.FINE, "Bind " + rel.toString() + " to " + bind);
   JavaFrame frame = (JavaFrame) mapRel2Frame.get(rel);
   frame.bind = bind;
   boolean stupid = SaffronProperties.instance().stupid.get();
   if (stupid) {
     // trigger the declaration of the variable, even though it
     // may not be used
     Util.discard(bind.getVariable());
   }
 }
示例#6
0
 private static int find(StatementList list, Statement statement) {
   if (statement == null) {
     return 0;
   } else {
     for (int i = 0, n = list.size(); i < n; i++) {
       if (list.get(i) == statement) {
         return i + 1;
       }
     }
     throw Util.newInternal("could not find statement " + statement + " in list " + list);
   }
 }
示例#7
0
  /**
   * Generate the HTML message that appears in the about box.
   *
   * @param infoSource The path to the information to display in the about box.
   * @return the generated message
   */
  private String generateMessage(final String infoSource) {
    Map appInfo = loadApplicationInfo(infoSource);

    StringBuffer message = new StringBuffer("<html>");
    message.append("<head>");
    message.append("<style type=\"text/css\">");
    message.append("P.title {text-align: center; font-size: large;}");
    message.append("P.version {text-align: center; font-size: medium;}");
    message.append("P.description {text-align: left; font-size:medium;}");
    message.append("li.author {font-size:medium;}");
    message.append("td.footer {text-align: center; font-size:small;}");
    message.append("Body.normal {background-color: silver}");
    message.append("</style>");
    message.append("</head>");
    message.append("<body class=normal>");

    String appName = getValue("name", appInfo);
    message.append("<P class=title>" + appName + "</P>");

    String version = getValue("version", appInfo);
    message.append("<P class=version> <b>Version:</b> " + version + "</P>");

    String description = getValue("description", appInfo);
    message.append("<dl><dt><b>Description:</b></dt><dd>" + description + "</dd></dl>");

    String authorList = getValue("authors", appInfo);
    String[] authors = Util.getTokens(authorList, ",");
    message.append("<p> <b>Authors:</b>");
    for (int index = 0; index < authors.length; index++) {
      String author = authors[index];
      message.append("<li class=author>" + author + "</li>");
    }
    message.append("</p>");

    message.append("<center> <table width=80%>");
    message.append("<tr><td class=footer> <hr> </td></tr>");

    String organization = getValue("organization", appInfo);
    message.append("<tr><td class=footer>" + organization + "</td></tr>");

    String date = getValue("date", appInfo);
    message.append("<tr><td class=footer>" + date + "</td></tr>");

    message.append("</table> </P>");

    message.append("</body>");
    message.append("</html>");

    return message.toString();
  }
示例#8
0
  /**
   * Load the application information from the properties file specified by the application adaptor.
   * The resource bundle information is stored in a Map for convenient access.
   *
   * @param path Path to the source information.
   * @return The map containing the application information
   */
  private Map loadApplicationInfo(final String path) {
    Map infoMap;

    try {
      infoMap = Util.loadResourceBundle(path);
    } catch (MissingResourceException exception) {
      final String message = "No application \"About Box\" information resource found at: " + path;
      Logger.getLogger("global").log(Level.WARNING, message, exception);
      System.err.println(message);

      // substitute with default information
      infoMap = new HashMap();
      infoMap.put("name", Application.getAdaptor().getClass().getName());
    }

    return infoMap;
  }
示例#9
0
  public String format(LogRecord record) {
    StringBuffer buf = new StringBuffer(1000);
    buf.append(new java.util.Date());
    buf.append(" : ");

    if (Level.INFO != record.getLevel()) {
      buf.append(record.getLevel());
      buf.append(": ");
    }

    buf.append(formatMessage(record));

    if (Util.isWinOS()) {
      buf.append("\r\n");
    } else {
      buf.append("\n");
    }

    return buf.toString();
  }
示例#10
0
 /**
  * Convert Key # -> _
  *
  * @param key
  * @return converted key
  */
 private String convertKey(String key) {
   String retValue = Util.replace(key, "#", "_");
   return retValue;
 } //  convertKey
示例#11
0
 public Variable getConnectionVariable() {
   throw Util.needToImplement("getConnectionVariable");
 }
示例#12
0
  /**
   * Generates code for a Java expression satisfying the {@link org.eigenbase.runtime.TupleIter}
   * interface. The generated code allocates a {@link org.eigenbase.runtime.CalcTupleIter} with a
   * dynamic {@link org.eigenbase.runtime.TupleIter#fetchNext()} method. If the "abort on error"
   * flag is false, or an error handling tag is specified, then fetchNext is written to handle row
   * errors.
   *
   * <p>Row errors are handled by wrapping expressions that can fail with a try/catch block. A
   * caught RuntimeException is then published to an "connection variable." In the event that errors
   * can overflow, an "error buffering" flag allows them to be posted again on the next iteration of
   * fetchNext.
   *
   * @param implementor an object that implements relations as Java code
   * @param rel the relation to be implemented
   * @param childExp the implemented child of the relation
   * @param varInputRow the Java variable to use for the input row
   * @param inputRowType the rel data type of the input row
   * @param outputRowType the rel data type of the output row
   * @param program the rex program to implemented by the relation
   * @param tag an error handling tag
   * @return a Java expression satisfying the TupleIter interface
   */
  public static Expression implementAbstractTupleIter(
      JavaRelImplementor implementor,
      JavaRel rel,
      Expression childExp,
      Variable varInputRow,
      final RelDataType inputRowType,
      final RelDataType outputRowType,
      RexProgram program,
      String tag) {
    MemberDeclarationList memberList = new MemberDeclarationList();

    // Perform error recovery if continuing on errors or if
    // an error handling tag has been specified
    boolean errorRecovery = !abortOnError || (tag != null);

    // Error buffering should not be enabled unless error recovery is
    assert !errorBuffering || errorRecovery;

    // Allow backwards compatibility until all Farrago extensions are
    // satisfied with the new error handling semantics. The new semantics
    // include:
    //   (1) cast input object to input row object outside of try block,
    //         should be fine, at least for base Farrago
    //   (2) maintain a columnIndex counter to better locate of error,
    //         at the cost of a few cycles
    //   (3) publish errors to the runtime context. FarragoRuntimeContext
    //         now supports this API
    boolean backwardsCompatible = true;
    if (tag != null) {
      backwardsCompatible = false;
    }

    RelDataTypeFactory typeFactory = implementor.getTypeFactory();
    OJClass outputRowClass = OJUtil.typeToOJClass(outputRowType, typeFactory);
    OJClass inputRowClass = OJUtil.typeToOJClass(inputRowType, typeFactory);

    Variable varOutputRow = implementor.newVariable();

    FieldDeclaration inputRowVarDecl =
        new FieldDeclaration(
            new ModifierList(ModifierList.PRIVATE),
            TypeName.forOJClass(inputRowClass),
            varInputRow.toString(),
            null);

    FieldDeclaration outputRowVarDecl =
        new FieldDeclaration(
            new ModifierList(ModifierList.PRIVATE),
            TypeName.forOJClass(outputRowClass),
            varOutputRow.toString(),
            new AllocationExpression(outputRowClass, new ExpressionList()));

    // The method body for fetchNext, a main target of code generation
    StatementList nextMethodBody = new StatementList();

    // First, post an error if it overflowed the previous time
    //     if (pendingError) {
    //         rc = handleRowError(...);
    //         if (rc instanceof NoDataReason) {
    //             return rc;
    //         }
    //         pendingError = false;
    //     }
    if (errorBuffering) {
      // add to next method body...
    }

    // Most of fetchNext falls within a while() block. The while block
    // allows us to try multiple input rows against a filter condition
    // before returning a single row.
    //     while (true) {
    //         Object varInputObj = inputIterator.fetchNext();
    //         if (varInputObj instanceof TupleIter.NoDataReason) {
    //             return varInputObj;
    //         }
    //         varInputRow = (InputRowClass) varInputObj;
    //         int columnIndex = 0;
    //         [calculation statements]
    //     }
    StatementList whileBody = new StatementList();

    Variable varInputObj = implementor.newVariable();

    whileBody.add(
        new VariableDeclaration(
            OJUtil.typeNameForClass(Object.class),
            varInputObj.toString(),
            new MethodCall(new FieldAccess("inputIterator"), "fetchNext", new ExpressionList())));

    StatementList ifNoDataReasonBody = new StatementList();

    whileBody.add(
        new IfStatement(
            new InstanceofExpression(
                varInputObj, OJUtil.typeNameForClass(TupleIter.NoDataReason.class)),
            ifNoDataReasonBody));

    ifNoDataReasonBody.add(new ReturnStatement(varInputObj));

    // Push up the row declaration for new error handling so that the
    // input row is available to the error handler
    if (!backwardsCompatible) {
      whileBody.add(assignInputRow(inputRowClass, varInputRow, varInputObj));
    }

    Variable varColumnIndex = null;
    if (errorRecovery && !backwardsCompatible) {
      // NOTE jvs 7-Oct-2006:  Declare varColumnIndex as a member
      // (rather than a local) in case in the future we want
      // to decompose complex expressions into helper methods.
      varColumnIndex = implementor.newVariable();
      FieldDeclaration varColumnIndexDecl =
          new FieldDeclaration(
              new ModifierList(ModifierList.PRIVATE),
              OJUtil.typeNameForClass(int.class),
              varColumnIndex.toString(),
              null);
      memberList.add(varColumnIndexDecl);
      whileBody.add(
          new ExpressionStatement(
              new AssignmentExpression(
                  varColumnIndex, AssignmentExpression.EQUALS, Literal.makeLiteral(0))));
    }

    // Calculator (projection, filtering) statements are later appended
    // to calcStmts. Typically, this target will be the while list itself.
    StatementList calcStmts;
    if (!errorRecovery) {
      calcStmts = whileBody;
    } else {
      // For error recovery, we wrap the calc statements
      // (e.g., everything but the code that reads rows from the
      // inputIterator) in a try/catch that publishes exceptions.

      calcStmts = new StatementList();

      // try { /* calcStmts */ }
      // catch(RuntimeException ex) {
      //     Object rc = connection.handleRowError(...);
      //     [buffer error if necessary]
      // }
      StatementList catchStmts = new StatementList();

      if (backwardsCompatible) {
        catchStmts.add(
            new ExpressionStatement(
                new MethodCall(
                    new MethodCall(
                        OJUtil.typeNameForClass(EigenbaseTrace.class), "getStatementTracer", null),
                    "log",
                    new ExpressionList(
                        new FieldAccess(OJUtil.typeNameForClass(Level.class), "WARNING"),
                        Literal.makeLiteral("java calc exception"),
                        new FieldAccess("ex")))));
      } else {
        Variable varRc = implementor.newVariable();
        ExpressionList handleRowErrorArgs =
            new ExpressionList(varInputRow, new FieldAccess("ex"), varColumnIndex);
        handleRowErrorArgs.add(Literal.makeLiteral(tag));
        catchStmts.add(
            new VariableDeclaration(
                OJUtil.typeNameForClass(Object.class),
                varRc.toString(),
                new MethodCall(
                    implementor.getConnectionVariable(), "handleRowError", handleRowErrorArgs)));

        // Buffer an error if it overflowed
        //     if (rc instanceof NoDataReason) {
        //         pendingError = true;
        //         [save error state]
        //         return rc;
        //     }
        if (errorBuffering) {
          // add to catch statements...
        }
      }

      CatchList catchList =
          new CatchList(
              new CatchBlock(
                  new Parameter(OJUtil.typeNameForClass(RuntimeException.class), "ex"),
                  catchStmts));

      TryStatement tryStmt = new TryStatement(calcStmts, catchList);

      whileBody.add(tryStmt);
    }

    if (backwardsCompatible) {
      calcStmts.add(assignInputRow(inputRowClass, varInputRow, varInputObj));
    }

    StatementList condBody;
    RexToOJTranslator translator = implementor.newStmtTranslator(rel, calcStmts, memberList);
    try {
      translator.pushProgram(program);
      if (program.getCondition() != null) {
        // TODO jvs 8-Oct-2006:  move condition to its own
        // method if big, as below for project exprs.
        condBody = new StatementList();
        RexNode rexIsTrue =
            rel.getCluster()
                .getRexBuilder()
                .makeCall(SqlStdOperatorTable.isTrueOperator, program.getCondition());
        Expression conditionExp = translator.translateRexNode(rexIsTrue);
        calcStmts.add(new IfStatement(conditionExp, condBody));
      } else {
        condBody = calcStmts;
      }

      RelDataTypeField[] fields = outputRowType.getFields();
      final List<RexLocalRef> projectRefList = program.getProjectList();
      int i = -1;
      for (RexLocalRef rhs : projectRefList) {

        // NOTE jvs 14-Sept-2006:  Put complicated project expressions
        // into their own method, otherwise a big select list can easily
        // blow the 64K Java limit on method bytecode size.  Make
        // methods private final in the hopes that they will get inlined
        // JIT.  For now we decide "complicated" based on the size of
        // the generated Java parse tree. A big enough select list of
        // simple expressions could still blow the limit, so we may need
        // to group them together, sub-divide, etc.

        StatementList projMethodBody = new StatementList();

        if (errorRecovery && !backwardsCompatible) {
          projMethodBody.add(
              new ExpressionStatement(
                  new UnaryExpression(varColumnIndex, UnaryExpression.POST_INCREMENT)));
        }
        ++i;

        RexToOJTranslator projTranslator = translator.push(projMethodBody);
        String javaFieldName = Util.toJavaId(fields[i].getName(), i);
        Expression lhs = new FieldAccess(varOutputRow, javaFieldName);
        projTranslator.translateAssignment(fields[i], lhs, rhs);

        int complexity = OJUtil.countParseTreeNodes(projMethodBody);

        // REVIEW: HCP 5/18/2011
        // The projMethod should be checked
        // for causing possible compiler errors caused by the use of
        // variables declared in other projMethods.  Also the
        // local declaration of variabled used by other proj methods
        // should also be checked.

        // Fixing for backswing integration 14270
        // TODO: check if abstracting this method body will cause
        // a compiler error
        if (true) {
          // No method needed; just append.
          condBody.addAll(projMethodBody);
          continue;
        }

        // Need a separate method.

        String projMethodName = "calc_" + varOutputRow.toString() + "_f_" + i;
        MemberDeclaration projMethodDecl =
            new MethodDeclaration(
                new ModifierList(ModifierList.PRIVATE | ModifierList.FINAL),
                TypeName.forOJClass(OJSystem.VOID),
                projMethodName,
                new ParameterList(),
                null,
                projMethodBody);
        memberList.add(projMethodDecl);
        condBody.add(new ExpressionStatement(new MethodCall(projMethodName, new ExpressionList())));
      }
    } finally {
      translator.popProgram(program);
    }

    condBody.add(new ReturnStatement(varOutputRow));

    WhileStatement whileStmt = new WhileStatement(Literal.makeLiteral(true), whileBody);

    nextMethodBody.add(whileStmt);

    MemberDeclaration fetchNextMethodDecl =
        new MethodDeclaration(
            new ModifierList(ModifierList.PUBLIC),
            OJUtil.typeNameForClass(Object.class),
            "fetchNext",
            new ParameterList(),
            null,
            nextMethodBody);

    // The restart() method should reset variables used to buffer errors
    //     pendingError = false
    if (errorBuffering) {
      // declare refinement of restart() and add to member list...
    }

    memberList.add(inputRowVarDecl);
    memberList.add(outputRowVarDecl);
    memberList.add(fetchNextMethodDecl);
    Expression newTupleIterExp =
        new AllocationExpression(
            OJUtil.typeNameForClass(CalcTupleIter.class), new ExpressionList(childExp), memberList);

    return newTupleIterExp;
  }