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

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

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

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

org.apache.derby.iapi.services.compiler.MethodBuilder.push()
Push a byte constant onto the stack
```
 Stack ...  => ...,byte_value 
```

    // 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);


    rmb.methodReturn();

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    // 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);


    rmb.methodReturn();
    rmb.complete();

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  {
    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();
    }


    // generate the parameters

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      MethodBuilder closeActivationMethod = acb.getCloseActivationMethod();


      closeActivationMethod.getField(psHolder);
      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);

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        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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            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,
                      "setParameterMode", "void", 2);
            constructor.endStatement();
          }

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            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,
                      "setParameterMode", "void", 2);
            constructor.endStatement();
          }
        }

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        // Add a method that indicates the maxium number of dynamic result sets.
        int maxDynamicResults = routineInfo.getMaxDynamicResultSets();
        if (maxDynamicResults > 0) {
          MethodBuilder gdr = acb.getClassBuilder().newMethodBuilder(Modifier.PUBLIC, "int", "getMaxDynamicResults");
          gdr.push(maxDynamicResults);
          gdr.methodReturn();
          gdr.complete();
        }


        // add a method to return all the dynamic result sets (unordered)

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            int applicationParameterNumber = applicationParameterNumbers[i];


            // 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

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            int applicationParameterNumber = applicationParameterNumbers[i];


            // 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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