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

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

Class org.apache.derby.iapi.services.compiler.MethodBuilder

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

org.apache.derby.iapi.services.compiler.MethodBuilder.callMethod()
Call a method. The instance (receiver or reference) for non-static methods must be pushed by the caller. The instance (for non-static) and the arguments are popped of the stack, and the return value (if any) is pushed onto the stack.
The type needs to be one of:
- VMOpcode.INVOKESTATIC - call a static method
- VMOpcode.INVOKEVIRTUAL - call method declared in the class or super-class.
- VMOpcode.INVOKEINTERFACE - call a method declared in an interface
```
 static methods Stack ...,value* => [numArgs number of values will be popped] ...,return_value [void methods will not push a value] non-static methods Stack ...,ref,value* => [numArgs number of values will be popped] ...,return_value [void methods will not push a value] 
```
The type of the arguments to the methods must exactly match the declared types of the parameters to the methods. If a argument is of the incorrect type the caller must up cast it or down cast it. @param type type of method invocation @param declaringClass Class or interface the method is declared in. If it is a non-staticmethod call then if declaringClass is null, the declared type is taken to be the type of the reference that will be popped. @param methodName name of the method @param returnType class name or primitive type (including "void") of the return type of the method, can not be null. @param numArgs number of arguments to the method (can be 0).

            constructor.callMethod(VMOpcode.INVOKEINTERFACE, null,
                      "getParameterValueSet", ClassName.ParameterValueSet, 0);


            constructor.push(applicationParameterNumber);
            constructor.push(JDBC30Translation.PARAMETER_MODE_UNKNOWN);
            constructor.callMethod(VMOpcode.INVOKEINTERFACE, null,
                      "setParameterMode", "void", 2);
            constructor.endStatement();
          }
        }
      }

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      }


      mbcm = mbnc;
    }


    mbcm.callMethod(VMOpcode.INVOKESTATIC, method.getDeclaringClass().getName(), methodName,
          actualMethodReturnType, nargs);




    if (returnsNullOnNullState != null)
    {

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        MethodBuilder constructor = acb.getConstructor();


        // constructor  - setting up correct paramter type info
        acb.pushThisAsActivation(constructor);
        constructor.callMethod(VMOpcode.INVOKEINTERFACE, null,
                  "getParameterValueSet", ClassName.ParameterValueSet, 0);


        // execute  - passing out parameters back.
        acb.pushThisAsActivation(mb);
        mb.callMethod(VMOpcode.INVOKEINTERFACE, null,

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            // Set the correct parameter nodes in the ParameterValueSet at constructor time.
            constructor.dup();
            constructor.push(applicationParameterNumber);
            constructor.push(parameterMode);
            constructor.callMethod(VMOpcode.INVOKEINTERFACE, null,
                    "setParameterMode", "void", 2);


            // Pass the value of the outparameters back to the calling code
            LocalField lf = outParamArrays[i];

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//    }
//


        // generate code to reinitializeQualifiers(Qualifier[][] qualifiers)
    executeMB.getField(qualField); // first arg to reinitializeQualifiers()
    executeMB.callMethod(
            VMOpcode.INVOKESTATIC, 
            acb.getBaseClassName(), "reinitializeQualifiers", "void", 1);


    /*
    ** Initialize the Qualifier array to a new Qualifier[][] if

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    ** Generate a call to get an indexable row
    ** with the given number of columns
    */
    acb.pushGetExecutionFactoryExpression(mb); // instance
    mb.push(numberOfColumns);
    mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.ExecutionFactory, "getIndexableRow", ClassName.ExecIndexRow, 1);


    /*
    ** Assign the indexable row to a field, and put this assignment into
    ** the constructor for the activation class.  This way, we only have
    ** to get the row once.

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    else
      pred.generateExpressionOperand(optTable, baseColumns[columnNumber], acb, mb);


    mb.upCast(ClassName.DataValueDescriptor);


    mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Row, "setColumn", "void", 2);


    /* Also tell the row if this column uses ordered null semantics */
    if (!isIn)
    {
      RelationalOperator relop = pred.getRelop();

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      }
      if (setOrderedNulls)
      {
        mb.getField(rowField);
        mb.push(columnNumber);
        mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.ExecIndexRow, "orderedNulls", "void", 1);
      }
    }
  }


  /**

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        cb.getField(field); // instance
        cb.push(index + 1); // first arg;


        rc.generateExpression(acb, cb);
        cb.cast(ClassName.DataValueDescriptor); // second arg
        cb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Row, "setColumn", "void", 2);
        continue;
      }


      userExprFun.getField(field); // instance
      userExprFun.push(index + 1); // arg1

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        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);
        exprFun.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.Row, "setColumn",
                      "void", 2);

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