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).

        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);
        continue;
      }


      /* Skip over those columns whose source is the immediate

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        // and that column positions reflect the stored format/order
      exprFun.getField(lf); // instance
      exprFun.push(colNum + 1); // first arg
      rc.generateHolder(acb, exprFun);


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


      // If there is a bit map of referenced columns, use it to
      // figure out what the next column is, otherwise just go
      // to the next column.
      if (referencedCols != null)

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    MethodBuilder cb = acb.getConstructor();


    acb.pushGetExecutionFactoryExpression(cb); // instance
    cb.push(numCols);
    cb.callMethod(VMOpcode.INVOKEINTERFACE, (String) null,
              rowAllocatorMethod, rowAllocatorType, 1);
    cb.setField(field);
    /* Increase the statement counter in constructor.  Code size in
     * constructor can become too big (more than 64K) for Java compiler
     * to handle (beetle 4293).  We set constant columns in other

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      closeActivationMethod.conditionalIfNull();
        // do nothing
        closeActivationMethod.push(0); // work around for no support for real if statements
      closeActivationMethod.startElseCode(); 
        closeActivationMethod.getField(psHolder);
        closeActivationMethod.callMethod(VMOpcode.INVOKEINTERFACE, "java.sql.Statement",
          "close", "void", 0);
        closeActivationMethod.push(0);


      closeActivationMethod.completeConditional();
      closeActivationMethod.endStatement();

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      else
      {
        mb.dup();
        mb.upCast(ClassName.DataValueDescriptor);
        mb.push(primitiveTN); 
        mb.callMethod(VMOpcode.INVOKESTATIC, ClassName.BaseActivation, "nullToPrimitiveTest", "void", 2);
      }


      // stack is dvd


      /* Generate the code to get the primitive value */

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      }


      // stack is dvd


      /* Generate the code to get the primitive value */
      mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.DataValueDescriptor,
                value.getTypeCompiler().getPrimitiveMethodName(), primitiveTN, 0);


      mb.methodReturn();
      mb.complete();

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          if (parameterType.endsWith("[]")) {


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


            constructor.push(applicationParameterNumber);
            constructor.push(JDBC30Translation.PARAMETER_MODE_UNKNOWN);
            constructor.callMethod(VMOpcode.INVOKEINTERFACE, null,

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            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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