Example usage for java.lang Enum ordinal

Introduction

In this page you can find the example usage for java.lang Enum ordinal.

Prototype

int ordinal

To view the source code for java.lang Enum ordinal.

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Document

The ordinal of this enumeration constant (its position in the enum declaration, where the initial constant is assigned an ordinal of zero).

Usage

From source file:ca.oson.json.Oson.java

private <E> Enum<?> json2Enum(FieldData objectDTO) {
    objectDTO.valueToProcess = StringUtil.unquote(objectDTO.valueToProcess, isEscapeHtml());
    Object valueToProcess = objectDTO.valueToProcess;
    Class<E> returnType = objectDTO.returnType;
    boolean required = objectDTO.required();
    Enum defaultValue = (Enum) objectDTO.defaultValue;
    boolean json2Java = objectDTO.json2Java;

    if (returnType == null || valueToProcess == null) {
        if (required) {
            return defaultValue;
        }/*from   w  ww .j  a  va2s. com*/

        return null;
    }

    String value = (String) valueToProcess;

    Class<Enum> enumType = (Class<Enum>) returnType;

    try {
        Function function = objectDTO.getDeserializer();

        if (function != null) {

            Object returnedValue = null;

            if (function instanceof Json2DataMapperFunction) {
                DataMapper classData = new DataMapper(returnType, value, objectDTO.classMapper, objectDTO.level,
                        getPrettyIndentation());
                returnedValue = ((Json2DataMapperFunction) function).apply(classData);

            } else if (function instanceof Json2FieldDataFunction) {
                Json2FieldDataFunction f = (Json2FieldDataFunction) function;
                FieldData fieldData = objectDTO.clone();

                returnedValue = f.apply(fieldData);

            } else if (function instanceof Json2EnumFunction) {
                return (Enum<?>) ((Json2EnumFunction) function).apply(value);
            } else {
                returnedValue = function.apply(value);
            }

            if (returnedValue instanceof Optional) {
                returnedValue = ObjectUtil.unwrap(returnedValue);
            }

            if (returnedValue == null) {
                return null;
            }

            Class type = returnedValue.getClass();

            if (Enum.class.isAssignableFrom(type)) {
                return (Enum<?>) returnedValue;

            } else if (Number.class.isAssignableFrom(type)) {
                int ordinal = ((Number) returnedValue).intValue();

                for (Enum enumValue : enumType.getEnumConstants()) {
                    if (enumValue.ordinal() == ordinal) {
                        return enumValue;
                    }
                }

            } else {
                String name = returnedValue.toString();

                for (Enum enumValue : enumType.getEnumConstants()) {
                    if (enumValue.toString().equalsIgnoreCase(name)
                            || enumValue.name().equalsIgnoreCase(name)) {
                        return enumValue;
                    }
                }
            }

        }

    } catch (Exception ex) {
    }

    for (Method method : enumType.getDeclaredMethods()) {
        for (Annotation annotation : method.getDeclaredAnnotations()) {
            String aname = annotation.annotationType().getName();

            switch (aname) {
            case "com.fasterxml.jackson.annotation.JsonCreator":
            case "org.codehaus.jackson.annotate.JsonCreator":
                return ObjectUtil.getMethodValue(null, method, value);

            case "ca.oson.json.annotation.FieldMapper":
                ca.oson.json.annotation.FieldMapper fieldMapper = (ca.oson.json.annotation.FieldMapper) annotation;
                if (fieldMapper.jsonCreator() != null && fieldMapper.jsonCreator() == BOOLEAN.TRUE) {
                    return ObjectUtil.getMethodValue(null, method, value);
                }
            }
        }

    }

    String fieldName = null;
    for (Field field : enumType.getDeclaredFields()) {
        String name = null;
        ca.oson.json.annotation.FieldMapper fieldMapper = field
                .getAnnotation(ca.oson.json.annotation.FieldMapper.class);
        if (fieldMapper != null) {
            name = fieldMapper.name();

            if (value.equalsIgnoreCase(name)) {
                fieldName = field.getName();
                break;
            }

        } else {
            for (Annotation annotation : field.getAnnotations()) {
                name = ObjectUtil.getName(annotation);
                if (value.equalsIgnoreCase(name)) {
                    fieldName = field.getName();
                    break;
                }
            }
        }
    }
    if (fieldName != null) {
        try {
            return Enum.valueOf(enumType, fieldName.toUpperCase());
        } catch (IllegalArgumentException ex) {
        }
    }

    try {
        return Enum.valueOf(enumType, value.toUpperCase());
    } catch (IllegalArgumentException ex) {
    }

    for (Enum enumValue : enumType.getEnumConstants()) {
        if (enumValue.toString().equalsIgnoreCase(value) || enumValue.name().equalsIgnoreCase(value)) {
            return enumValue;
        }
    }

    FieldData fieldData = new FieldData(value, Integer.class, true);
    Integer ordinal = json2Integer(fieldData);

    if (ordinal != null) {
        for (Enum enumValue : enumType.getEnumConstants()) {
            if (enumValue.ordinal() == ordinal) {
                return enumValue;
            }
        }
    }

    return null;
}

---

From source file:ca.oson.json.Oson.java

private <E> String enum2Json(FieldData objectDTO) {
    Object value = objectDTO.valueToProcess;
    Class<E> valueType = objectDTO.returnType;
    EnumType enumType = objectDTO.getEnumType();

    if (value == null) {
        return null;
    }// w  w  w  .j a  v a 2s .c o m

    Enum en = (Enum) value;

    try {
        Function function = objectDTO.getSerializer();
        if (function != null) {
            try {
                if (function instanceof DataMapper2JsonFunction) {
                    DataMapper classData = new DataMapper(objectDTO.returnType, value, objectDTO.classMapper,
                            objectDTO.level, getPrettyIndentation());
                    return ((DataMapper2JsonFunction) function).apply(classData);

                } else if (function instanceof Enum2JsonFunction) {
                    return ((Enum2JsonFunction) function).apply(en);

                } else {

                    Object returnedValue = null;
                    if (function instanceof FieldData2JsonFunction) {
                        FieldData2JsonFunction f = (FieldData2JsonFunction) function;
                        FieldData fieldData = objectDTO.clone();
                        returnedValue = f.apply(fieldData);
                    } else {
                        returnedValue = function.apply(value);
                    }

                    if (returnedValue instanceof Optional) {
                        returnedValue = ObjectUtil.unwrap(returnedValue);
                    }

                    if (returnedValue == null) {
                        return null; // just ignore it, right?
                    } else if (Enum.class.isAssignableFrom(returnedValue.getClass())) {
                        en = (Enum) returnedValue;

                    } else {
                        objectDTO.valueToProcess = returnedValue;
                        return object2String(objectDTO);
                    }

                }

            } catch (Exception e) {
            }
        }
    } catch (Exception ex) {
    }

    String name = en.name();

    if (enumType == null || enumType == EnumType.STRING) {

        for (Method method : valueType.getDeclaredMethods()) {
            for (Annotation annotation : method.getDeclaredAnnotations()) {
                String aname = annotation.annotationType().getName();

                switch (aname) {
                case "com.fasterxml.jackson.annotation.JsonValue":
                case "org.codehaus.jackson.annotate.JsonValue":
                    return ObjectUtil.getMethodValue(en, method);

                case "ca.oson.json.annotation.FieldMapper":
                    ca.oson.json.annotation.FieldMapper fieldMapper = (ca.oson.json.annotation.FieldMapper) annotation;
                    if (fieldMapper.jsonValue() != null && fieldMapper.jsonValue() == BOOLEAN.TRUE) {
                        return ObjectUtil.getMethodValue(en, method);
                    }
                }
            }

        }

        for (Field field : valueType.getDeclaredFields()) {
            if (name.equalsIgnoreCase(field.getName())) {
                ca.oson.json.annotation.FieldMapper fieldMapper = field
                        .getAnnotation(ca.oson.json.annotation.FieldMapper.class);
                if (fieldMapper != null) {
                    String aname = fieldMapper.name();
                    if (!StringUtil.isEmpty(aname)) {
                        return aname;
                    }

                } else {
                    for (Annotation annotation : field.getAnnotations()) {
                        String aname = ObjectUtil.getName(annotation);
                        if (!StringUtil.isEmpty(aname)) {
                            return aname;
                        }
                    }
                }
            }
        }

        return name;
    }

    switch (enumType) {
    case STRING:
        return en.name();
    case ORDINAL:
    default:
        return "" + en.ordinal();
    }
}

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