Package org.apache.derby.iapi.services.compiler

Examples of org.apache.derby.iapi.services.compiler.MethodBuilder.pushThis()

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      int numResultSets = acb.getRowCount();
      if(numResultSets > 0)
      {
        //generate activation.raParentResultSets = new NoPutResultSet[size]
        MethodBuilder constructor = acb.getConstructor();
        constructor.pushThis();
        constructor.pushNewArray(ClassName.CursorResultSet, numResultSets);
        constructor.putField(ClassName.BaseActivation,
                   "raParentResultSets",
                   ClassName.CursorResultSet + "[]");
        constructor.endStatement();
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    // declare field
    LocalField field = acb.newFieldDeclaration(Modifier.PRIVATE, type);

    /* Generate the call to the new method */
    mb.pushThis();
    mb.callMethod(VMOpcode.INVOKEVIRTUAL, (String) null, mbsq.getName(), type, 0);

    // generate: field = value (value is on stack)
    mb.putField(field);
    mb.endStatement();
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      **
      ** pvs is a ParameterValueSet that lives in the superclass of
      ** the activation being generated.
      */

      constructor.pushThis(); // for the put field down below

      /* Generate the call to getContext */
      //?X constructor.pushThis();
      //?Xconstructor.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Activation, "getLanguageConnectionContext",
      //?X          ClassName.LanguageConnectionContext, 0);
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      ** Add a call to the execute() method to check
      ** for missing parameters
      */
      MethodBuilder  executeMethod = acb.getExecuteMethod();

      executeMethod.pushThis();
      executeMethod.callMethod(VMOpcode.INVOKEVIRTUAL, ClassName.BaseActivation, "throwIfMissingParms", "void", 0);
    }
  }

  /*
 
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    // add a check at activation reset time to see if the cursor has
    // changed underneath us. Doing it in the constructor allows the
    // compilation to happen
    MethodBuilder rmb = acb.startResetMethod();

    rmb.pushThis();
    rmb.push(cursorName);
    rmb.push(preStmt.getObjectName());
    rmb.callMethod(VMOpcode.INVOKEVIRTUAL, ClassName.BaseActivation, "checkPositionedStatement",
            "void", 2);
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                MethodBuilder mb) throws StandardException
  {
    if (indexOfSessionTableNamesInSavedObjects != -1 ) //if this cursor references session schema tables, do following
    {
      MethodBuilder constructor = acb.getConstructor();
      constructor.pushThis();
      constructor.push(indexOfSessionTableNamesInSavedObjects);
      constructor.putField(org.apache.derby.iapi.reference.ClassName.BaseActivation, "indexOfSessionTableNamesInSavedObjects", "int");
      constructor.endStatement();
    }
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        // get the RowLocation template
        exprFun.getField(lf); // instance for setColumn
        exprFun.push(highestColumnNumber + 1); // first arg

        exprFun.pushThis(); // instance for getRowLocationTemplate
        exprFun.push(savedItem); // first arg
        exprFun.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Activation, "getRowLocationTemplate",
                  ClassName.RowLocation, 1);

        exprFun.upCast(ClassName.DataValueDescriptor);
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        // get the RowLocation template
        exprFun.getField(lf); // instance for setColumn
        exprFun.push(highestColumnNumber + 1); // first arg

        exprFun.pushThis(); // instance for getRowLocationTemplate
        exprFun.push(savedItem); // first arg
        exprFun.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Activation, "getRowLocationTemplate",
                  ClassName.RowLocation, 1);

        exprFun.upCast(ClassName.DataValueDescriptor);
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        // get the RowLocation template
        exprFun.getField(lf); // instance for setColumn
        exprFun.push(highestColumnNumber + 1); // first arg

        exprFun.pushThis(); // instance for getRowLocationTemplate
        exprFun.push(savedItem); // first arg
        exprFun.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Activation, "getRowLocationTemplate",
                  ClassName.RowLocation, 1);

        exprFun.upCast(ClassName.DataValueDescriptor);
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    // declare field
    LocalField field = acb.newFieldDeclaration(Modifier.PRIVATE, type);

    /* Generate the call to the new method */
    mb.pushThis();
    mb.callMethod(VMOpcode.INVOKEVIRTUAL, (String) null, mbsq.getName(), type, 0);

    // generate: field = value (value is on stack)
    mb.setField(field);

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