Examples of org.exolab.javasource.JMethod

org.exolab.javasource.JMethod
A class which holds information about the methods of a JClass. Modelled closely after the Java Reflection API. This class is part of package which is used to create source code. @author Keith Visco @version $Revision: 7331 $ $Date: 2004-12-03 11:57:33 -0700 (Fri, 03 Dec 2004) $

     * @param jClass The enumeration class to create this method for.
     * @param className The name of the class.
     */
    private void createEnumerateMethod(final JClass jClass, final String className) {
        // TODO for the time being return Enumeration<Object> for Java 5.0; change
        JMethod mEnumerate = new JMethod("enumerate",
                SGTypes.createEnumeration(SGTypes.OBJECT, getConfig().useJava50(), true),
                "an Enumeration over all possible instances of " + className);
        mEnumerate.getModifiers().setStatic(true);
        jClass.addMethod(mEnumerate);
        JDocComment jdc = mEnumerate.getJDocComment();
        jdc.appendComment("Returns an enumeration of all possible instances of ");
        jdc.appendComment(className);
        mEnumerate.getSourceCode().add("return _memberTable.elements();");
    }

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     * Creates 'valueOf(String)' method for this enumeration class.
     * @param jClass The enumeration class to create this method for.
     * @param className The name of the class.
     */
    private void createValueOfMethod(final JClass jClass, final String className) {
        JMethod mValueOf = new JMethod(
                "valueOf", jClass, "the " + className + " value of parameter 'string'");
        mValueOf.addParameter(new JParameter(SGTypes.STRING, "string"));
        mValueOf.getModifiers().setStatic(true);
        jClass.addMethod(mValueOf);


        JDocComment jdc = mValueOf.getJDocComment();
        jdc.appendComment("Returns a new " + className);
        jdc.appendComment(" based on the given String value.");


        JSourceCode jsc = mValueOf.getSourceCode();
        jsc.add("java.lang.Object obj = null;\n"
              + "if (string != null) {\n"
              + " obj = _memberTable.get(string{1});\n"
              + "}\n"
              + "if (obj == null) {\n"

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        fValues.setInitString(values.toString());
        jClass.addField(fValues);


        //-- #valueOf method
        JMethod method = new JMethod("valueOf", jClass,
                                     "the String value of the provided " + baseType.getJType());
        method.addParameter(new JParameter(SGTypes.STRING, "string"));
        method.getModifiers().setStatic(true);
        jClass.addMethod(method);
        jdc = method.getJDocComment();
        jdc.appendComment("Returns the " + baseType.getJType());
        jdc.appendComment(" based on the given String value.");
        jsc = method.getSourceCode();


        jsc.add("for (int i = 0; i < values.length; i++) {");
        jsc.add("}");
        jsc.add("throw new IllegalArgumentException(\"");
        jsc.append("Invalid value for ");

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    /**
     * {@inheritDoc}
     */
    protected void createEnumerateMethod(final CollectionInfo fieldInfo, 
            final JClass jClass, final boolean useJava50) {
        JMethod method = new JMethod("enumerate" + fieldInfo.getMethodSuffix(),
                SGTypes.createEnumeration(fieldInfo.getContentType().getJType(), useJava50, true),
                "an Enumeration over all elements of this collection");


        JSourceCode sourceCode = method.getSourceCode();
        sourceCode.add("java.util.Vector v = new java.util.Vector();"); // ODMG 3.0
        sourceCode.add("java.util.Iterator i = ");
        sourceCode.append(fieldInfo.getName());
        sourceCode.append(".iterator();");
        sourceCode.add("");

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     * @param useJava50
     *            true if source code is supposed to be generated for Java 5
     */
    private void createGetterMethod(final FieldInfo fieldInfo, 
            final JClass jClass, final boolean useJava50, AnnotationBuilder[] annotationBuilders) {
        JMethod method    = null;
        JSourceCode jsc   = null;


        String mname = fieldInfo.getMethodSuffix();


        XSType xsType = new XMLInfoNature(fieldInfo).getSchemaType();
        JType jType  = xsType.getJType();


        //-- create get method
        method = new JMethod(fieldInfo.getReadMethodName(), jType,
                             "the value of field '" + mname + "'.");
//        if (useJava50) {
//            Java5HacksHelper.addOverrideAnnotations(method.getSignature());
//        }
        
        for (int i = 0; i < annotationBuilders.length; i++) {
            AnnotationBuilder annotationBuilder = annotationBuilders[i];
            annotationBuilder.addFieldGetterAnnotations(fieldInfo, method);
        }
        
        jClass.addMethod(method);
        createGetterComment(fieldInfo, method.getJDocComment());
        jsc = method.getSourceCode();
        jsc.add("return this.");
        jsc.append(fieldInfo.getName());
        jsc.append(";");


        if (xsType.getType() == XSType.BOOLEAN_TYPE) {


            // -- create is<Property>t method
            method = new JMethod(fieldInfo.getIsMethodName(), jType,
                    "the value of field '" + mname + "'.");
//            if (useJava50) {
//                Java5HacksHelper.addOverrideAnnotations(method.getSignature());
//            }
            jClass.addMethod(method);
            createGetterComment(fieldInfo, method.getJDocComment());
            jsc = method.getSourceCode();
            jsc.add("return this.");
            jsc.append(fieldInfo.getName());
            jsc.append(";");


        }

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     * @param fieldInfo the fieldInfo to translate
     * @param jClass the JClass to add the methods to
     */
    private void createHasAndDeleteMethods(final FieldInfo fieldInfo, 
            final JClass jClass) {
        JMethod method    = null;
        JSourceCode jsc   = null;


        String mname = fieldInfo.getMethodSuffix();


        XSType xsType = new XMLInfoNature(fieldInfo).getSchemaType();
        xsType.getJType();


        //-- create hasMethod
        method = new JMethod(fieldInfo.getHasMethodName(), JType.BOOLEAN,
                             "true if at least one " + mname + " has been added");
        jClass.addMethod(method);
        jsc = method.getSourceCode();
        jsc.add("return this._has");
        String fieldName = fieldInfo.getName();
        jsc.append(fieldName);
        jsc.append(";");


        //-- create delete method
        method = new JMethod(fieldInfo.getDeleteMethodName());
        jClass.addMethod(method);
        jsc = method.getSourceCode();
        jsc.add("this._has");
        jsc.append(fieldName);
        jsc.append("= false;");
        //-- bound properties
        if (fieldInfo.isBound()) {

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     * @param jClass the JClass to add the methods to
     * @param useJava50 true if source code is supposed to be generated for Java 5
     */
     private void createSetterMethod(final FieldInfo fieldInfo, 
             final JClass jClass, final boolean useJava50) {
        JMethod method    = null;
        JSourceCode jsc   = null;


        XMLInfoNature xmlNature = new XMLInfoNature(fieldInfo);
        
        String mname  = fieldInfo.getMethodSuffix();
        XSType xsType = xmlNature.getSchemaType();
        JType jType   = xsType.getJType();


        //-- create set method
        /*
         * fieldInfo.getWriteMethodName() will either prefix the method
         * with 'add' (for multivalued fields) or 'set'! 
         * @see FieldInfo#getWriteMethodeName() 
         */ 
        method = new JMethod(fieldInfo.getWriteMethodName());
        jClass.addMethod(method);


        String paramName = fieldInfo.getName();


        //-- make parameter name pretty,
        //-- simply for aesthetic beauty
        if (paramName.indexOf('_') == 0) {
            String tempName = paramName.substring(1);
            if (_javaNaming.isValidJavaIdentifier(tempName)) {
                paramName = tempName;
            }
        }


        method.addParameter(new JParameter(jType, paramName));
//        if (useJava50) {
//            Java5HacksHelper.addOverrideAnnotations(method.getSignature()); // DAB Java 5.0 hack
//        }
        createSetterComment(fieldInfo, method.getJDocComment());
        jsc = method.getSourceCode();


        String fieldName = fieldInfo.getName();
        //-- bound properties
        if (fieldInfo.isBound()) {
            // save old value

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                        +  documentation.getSource() + "\", \"" 
                        + documentationContent + "\");");
            }
        }


        JMethod aMethod = new JMethod("getXmlSchemaDocumentations", 
                new JClass("java.util.Map"), 
        " A collection of documentation elements.");
        JSourceCode sourceCode = aMethod.getSourceCode();
        sourceCode.add("return _xmlSchemaDocumentations;");
        jClass.addMethod(aMethod);


        JMethod anotherMethod = new JMethod("getXmlSchemaDocumentation", 
                new JClass("java.lang.String"), 
                    " A specific XML schema documentation element.");
        JParameter parameter = new JParameter(new JClass("java.lang.String"), "source");
        anotherMethod.addParameter(parameter);
        sourceCode = anotherMethod.getSourceCode();
        sourceCode.add("return (java.lang.String) _xmlSchemaDocumentations.get(source);");
        jClass.addMethod(anotherMethod);
    }

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        jClass.addInterface("org.exolab.castor.jdo.TimeStampable");
        
        JField jdoTimestamp = new JField(JType.LONG, "_jdoTimeStamp");
        jClass.addField(jdoTimestamp);
        
        JMethod getTSMethod = new JMethod("jdoGetTimeStamp", JType.LONG,
                 "returns the current time stamp");
        JSourceCode getSourceCode = getTSMethod.getSourceCode();
        getSourceCode.addIndented("return _jdoTimeStamp;");
        jClass.addMethod(getTSMethod);


        JMethod setTSMethod = new JMethod("jdoSetTimeStamp");
        JParameter parameter = new JParameter(JType.LONG, "jdoTimeStamp");
        setTSMethod.addParameter(parameter);
        JSourceCode setSourceCode = setTSMethod.getSourceCode();
        setSourceCode.addIndented("this._jdoTimeStamp = jdoTimeStamp;");
        jClass.addMethod(setTSMethod);
     }

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        //---------------------------------/
        //- notifyPropertyChangeListeners -/
        //---------------------------------/


        JMethod jMethod = new JMethod("notifyPropertyChangeListeners");
        jMethod.getModifiers().makeProtected();


        JDocComment jdc = jMethod.getJDocComment();
        JDocDescriptor jdDesc = null;
        String desc = null;


        desc = "Notifies all registered PropertyChangeListeners "
             + "when a bound property's value changes.";
        jdc.appendComment(desc);


        jMethod.addParameter(new JParameter(SGTypes.STRING, "fieldName"));
        jdDesc = jdc.getParamDescriptor("fieldName");
        jdDesc.setDescription("the name of the property that has changed.");


        jMethod.addParameter(new JParameter(SGTypes.OBJECT, "oldValue"));
        jdDesc = jdc.getParamDescriptor("oldValue");
        jdDesc.setDescription("the old value of the property.");


        jMethod.addParameter(new JParameter(SGTypes.OBJECT, "newValue"));
        jdDesc = jdc.getParamDescriptor("newValue");
        jdDesc.setDescription("the new value of the property.");


        parent.addMethod(jMethod);
        JSourceCode jsc = jMethod.getSourceCode();
        //--fix for bug 1026
        jsc.add("if (");
        jsc.append(vName);
        jsc.append(" == null) return;");


        jsc.add(vName);
        jsc.append(".firePropertyChange(fieldName,oldValue,newValue);");


        //-----------------------------/
        //- addPropertyChangeListener -/
        //-----------------------------/


        JType jType = new JClass("java.beans.PropertyChangeListener");
        jMethod = new JMethod("addPropertyChangeListener");


        desc = "Registers a PropertyChangeListener with this class.";
        jdc = jMethod.getJDocComment();
        jdc.appendComment(desc);


        jMethod.addParameter(new JParameter(jType, "pcl"));
        desc = "The PropertyChangeListener to register.";
        jdDesc = jdc.getParamDescriptor("pcl");
        jdDesc.setDescription(desc);


        parent.addMethod(jMethod);


        jsc = jMethod.getSourceCode();


        jsc.add("if (");
        jsc.append(vName);
        jsc.append(" == null) {");
        jsc.addIndented(vName + " = new java.beans.PropertyChangeSupport(this);");
        jsc.add("}");
        jsc.add(vName);
        jsc.append(".addPropertyChangeListener(pcl);");


        //--------------------------------/
        //- removePropertyChangeListener -/
        //--------------------------------/


        jMethod = new JMethod("removePropertyChangeListener", JType.BOOLEAN,
                              "always returns true if pcl != null");


        desc = "Removes the given PropertyChangeListener "
             + "from this classes list of ProperyChangeListeners.";
        jdc = jMethod.getJDocComment();
        jdc.appendComment(desc);


        jMethod.addParameter(new JParameter(jType, "pcl"));
        desc = "The PropertyChangeListener to remove.";
        jdDesc = jdc.getParamDescriptor("pcl");
        jdDesc.setDescription(desc);


        parent.addMethod(jMethod);


        jsc = jMethod.getSourceCode();
        jsc.add("if (");
        jsc.append(vName);
        jsc.append(" == null) return false;");


        jsc.add(vName);

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