Examples of org.apache.ws.jaxme.js.DirectAccessible

org.apache.ws.jaxme.js.DirectAccessible
This interface is an abstract base for fields and similar objects. It doesn't define many methods, it mainly indicates, that the implementations value is directly and fast accessible in the generated code. The use is best demonstrated by an example. Suggest the following piece of code:
```
 Object value; return new Object[]{"((", value, ") * (", value, "))"}; 
```
The example is well suited for the case, where value is a variable name like "i". It is not suited, if "value" contains an expensive method call like "sin(x)". It is even wrong in the case "i++".

By using the interface DirectAccessible, you can change the implementation of getSquare() to look like this:
```
 Object value; JavaQName type; if (!(value instanceof DirectAccessible)) { LocalJavaField v = pMethod.newJavaField(type); v.addLine(value); v.setFinal(true); value = v; } return new Object[]{"((", value, ") * (", value, "))"}; 
```
This results in code, which is far more readable and better optimized.
@author Jochen Wiedmann


    private TypedValue getParseCall(SimpleTypeSG pController, JavaMethod pMethod,
                                Object pValue, Object pData)
            throws SAXParseException {
        JavaQName type = getType(pController);
        DirectAccessible value = getValue(pMethod, pValue, JavaQNameImpl.getInstance(String.class));


        String parseMethod = javaType.getParseMethod().trim();
        List list = new ArrayList();
        if (parseMethod.startsWith("new")
            &&  parseMethod.length() > 3

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    private TypedValue getPrintCall(SimpleTypeSG pController, JavaMethod pMethod,
                                Object pValue, Object pData) {
      JavaQName type = getType(pController);
        LocalJavaField f = pMethod.newJavaField(String.class);
        DirectAccessible value = getValue(pMethod, pValue, type);
        List list = new ArrayList();
        addCall(pController, list, javaType.getPrintMethod(), type);
        addValues(list, value, pData);
        pMethod.addTry();
        pMethod.addLine(f, " = ", list, ";");
        DirectAccessible e = pMethod.addCatch(Exception.class);
        pMethod.addLine(pData, ".printConversionEvent(pObject, ", 
                        JavaSource.getQuoted("Failed to convert value "),
                        " + ", value, " + ", JavaSource.getQuoted(": "),
                        " + ", e, ".getClass().getName(), ", e, ");");
        pMethod.addLine(f, " = null;");

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        }
      }
      else {
        runtimeType = pController.getRuntimeType();
      }
      DirectAccessible param = jm.addParam(runtimeType, pParamName);
      if (!pSource.isInterface()) {
        jm.addLine(pFieldName, " = ", param, ";");
      }
      return jm;
    } else {

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      throws SAXException {
    LocalJavaField list = pMethod.newJavaField(LIST_TYPE);
    String collectionType = pController.getCollectionType();
    list.addLine("new ", ("indexed".equals(collectionType) ?
                          ARRAYLIST_TYPE : JavaQNameImpl.getInstance(collectionType, true)), "()");
    DirectAccessible st = pMethod.addForEnumeration(StringTokenizer.class, new Object[]{"new ", StringTokenizer.class, "(", pValue, ")"});
    pMethod.addLine(list, ".add(", itemType.getSimpleTypeSG().getCastFromString(pMethod, new Object[]{st, ".nextToken()"}, pData),
                    ");");
    pMethod.addEndFor();


    if ("indexed".equals(collectionType)) {

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  }


  public TypedValue getCastToString(SimpleTypeSG pController, JavaMethod pMethod, Object pValue, DirectAccessible pData)
      throws SAXException {
    String collectionType = pController.getCollectionType();
    DirectAccessible value;
    if (pValue instanceof DirectAccessible) {
      value = (DirectAccessible) pValue;
    } else {
      LocalJavaField v = pMethod.newJavaField(pController.getRuntimeType());
      v.addLine(pValue);
      value = v;
    }


    LocalJavaField sb = pMethod.newJavaField(StringBuffer.class);
    sb.addLine("new ", StringBuffer.class, "()");
    Object v;
    DirectAccessible loopVar;
    if ("indexed".equals(collectionType)) {
      loopVar = pMethod.addForArray(value);
      v = new Object[]{value, "[", loopVar, "]"};
    } else {
      loopVar = pMethod.addForList(value);

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            LocalJavaField resultA = pMethod.newJavaField(pType);
            pMethod.addIf(resultV , " == null");
            pMethod.addLine(resultA, " = null;");
            pMethod.addElse();
            pMethod.addLine(resultA, " = new ", pType.getInstanceClass(), "[", resultV, ".size()];");
            DirectAccessible i = pMethod.addForArray(resultA);
            Object element = new Object[]{resultV, ".elementAt(", i, ")"};
            pMethod.addLine(resultA, "[", i, "] = ", getResultValue(pMethod, pType.getInstanceClass(), element), ";");
            pMethod.addEndFor();
            pMethod.addEndIf();
            return resultA;

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            LocalJavaField v = pMethod.newJavaField(Vector.class);
            pMethod.addIf(pValue, " == null");
            pMethod.addLine(v, " = null;");
            pMethod.addElse();
            pMethod.addLine(v, " = new ", Vector.class, "();");
            DirectAccessible i = pMethod.addForArray(pValue);
            Object element = new Object[]{pValue, "[", i, "]"};
            pMethod.addLine(v, ".add(", getInputValue(pMethod, pType.getInstanceClass(), element), ");");
            pMethod.addEndFor();
            pMethod.addEndIf();
            return v;

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          jm.addLine("return ", getResultValue(jm, jm.getType(), result), ";");
        }
        if (!exceptionList.isEmpty()) {
            for (int i = 0;  i < exceptionList.size();  i++) {
              JavaQName exClass = (JavaQName) exceptionList.get(i);
                DirectAccessible e = jm.addCatch(exClass);
                jm.addThrowNew(UndeclaredThrowableException.class, e);
            }
            jm.addEndTry();
        }
        return jm;

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                       JavaSource.getQuoted("Unknown method name: "),
                       " + ", name);
        jm.addEndIf();
        jm.addTry();
        jm.addLine("return ", invoker, ".invoke(", args, ");");
        DirectAccessible e = jm.addCatch(Exception.class);
        jm.addLine("throw ", e, ";");
        DirectAccessible t = jm.addCatch(Throwable.class);
        jm.addThrowNew(UndeclaredThrowableException.class, t);
        jm.addEndTry();
        return jm;
    }

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  protected void getFinally(JavaMethod pMethod, DirectAccessible pRessource, Object pSqlMsg,
                              Object pJaxbMsg) {
    pMethod.addLine(pRessource, ".close();");
    pMethod.addLine(pRessource, " = null;");
    if (pSqlMsg != null) {
      DirectAccessible e = pMethod.addCatch(SQLException.class);
      pMethod.addThrowNew(PMException.class, pSqlMsg, " + ", JavaSource.getQuoted(": "),
                          " + ", e, ".getMessage(), ", e);
    }
    if (pJaxbMsg != null) {
      DirectAccessible e = pMethod.addCatch(JAXBException.class);
      pMethod.addIf(e, " instanceof ", PMException.class);
      pMethod.addLine("throw (", PMException.class, ") ", e, ";");
      pMethod.addElse();
      pMethod.addThrowNew(PMException.class, pSqlMsg, " + ", JavaSource.getQuoted(": "),
                          " + ", e, ".getMessage(), ", e);

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