Example usage for java.lang Class getDeclaredFields

Introduction

In this page you can find the example usage for java.lang Class getDeclaredFields.

Prototype

@CallerSensitive
public Field[] getDeclaredFields() throws SecurityException

Source Link

Document

Returns an array of Field objects reflecting all the fields declared by the class or interface represented by this Class object.

Usage

From source file:Main.java

public static Object isEmpty(Object obj, Class clazz) {
    if (obj == null || clazz == null) {
        return obj;
    }// w w w .  j av  a 2 s  .c o  m
    Field[] fields = clazz.getDeclaredFields();
    for (Field field : fields) {
        try {
            String fieldName = field.getName();
            if (fieldName == null || fieldName.length() == 0)
                continue;
            String fieldMethodName = fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);
            String getfieldName = "get" + fieldMethodName;
            Method getMethod = clazz.getMethod(getfieldName, null);
            if (getMethod == null)
                continue;
            Object value = getMethod.invoke(obj, null);
            Class type = field.getType();
            if (type == String.class) {
                if (value == null || "null".equals(value.toString()) || value.toString().trim().length() == 0) {
                    value = "";
                    String setfieldName = "set" + fieldMethodName;
                    Method setMethod = clazz.getMethod(setfieldName, String.class);
                    if (setMethod == null)
                        continue;
                    setMethod.invoke(obj, value);
                }
            } else if (type == Integer.class || type == int.class || type == Float.class || type == float.class
                    || type == Double.class || type == double.class) {
                if (value == null || "null".equals(value.toString()) || value.toString().length() == 0) {
                    String setfieldName = "set" + fieldMethodName;
                    Method setMethod = clazz.getMethod(setfieldName, type);
                    setMethod.invoke(obj, 0);
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
            continue;
        }
    }
    return obj;
}

From source file:Main.java

public static Field[] getDeclaredFields(Object paramObject) {
    Object localObject = null;/*from   w  w  w . j a va  2  s  .c o  m*/
    if (paramObject != null) {
        return null;
    } else {
        try {
            Class localClass = paramObject.getClass();
            localObject = null;
            if (localClass != null) {
                Field[] arrayOfField = localClass.getDeclaredFields();
                return arrayOfField;
            }
        } catch (Exception var4) {
            ;
        }

        return null;
    }
}

From source file:Main.java

/**
 * Coverter./* w w w .  j a va  2 s.  c om*/
 *
 * @param object
 *            the object
 * @return the string
 */
@SuppressWarnings("unused")
public static String coverter(Object object) {
    if (object instanceof Object[]) {
        return coverter((Object[]) object);
    }
    if (object instanceof Collection) {
        return coverter((Collection<?>) object);
    }
    StringBuilder strBuilder = new StringBuilder();
    if (isObject(object)) {
        Class<? extends Object> clz = object.getClass();
        Field[] fields = clz.getDeclaredFields();

        for (Field field : fields) {
            field.setAccessible(true);
            if (field == null) {
                continue;
            }
            String fieldName = field.getName();
            Object value = null;
            try {
                value = field.get(object);
            } catch (IllegalArgumentException e) {
                continue;
            } catch (IllegalAccessException e) {
                continue;
            }
            strBuilder.append("<").append(fieldName).append(" className=\"").append(value.getClass().getName())
                    .append("\">\n");
            strBuilder.append(value.toString() + "\n");
            strBuilder.append("</").append(fieldName).append(">\n");
        }
    } else if (object == null) {
        strBuilder.append("null");
    } else {
        strBuilder.append(object.toString());
    }
    return strBuilder.toString();
}

From source file:com.qumoon.commons.BeanMapper.java

public static <T> T convertProto2Bean(com.google.protobuf.GeneratedMessage message, T descObject,
        Class srcClass) {
    for (Field srcField : srcClass.getDeclaredFields()) {
        Descriptors.FieldDescriptor fd = message.getDescriptorForType().findFieldByName(srcField.getName());
        if (null == fd) {
            continue;
        }//  ww w.ja  v a 2  s . c  o m
        try {
            String fieldStrValue = String.valueOf(message.getField(fd));
            if (fieldStrValue.isEmpty()) {
                continue;
            }
            if (srcField.getType() == BigDecimal.class) {
                PropertyUtils.setProperty(descObject, srcField.getName(), new BigDecimal(fieldStrValue));
            } else {
                if (srcField.getType() == Date.class) {
                    PropertyUtils.setProperty(descObject, srcField.getName(),
                            new Date((Long) (message.getField(fd))));
                } else {
                    if (srcField.getType() == Byte.class) {
                        PropertyUtils.setProperty(descObject, srcField.getName(), Byte.valueOf(fieldStrValue));
                    } else {
                        PropertyUtils.setProperty(descObject, srcField.getName(), message.getField(fd));
                    }
                }
            }
        } catch (Exception e) {
            logger.error(e.getMessage());
        } finally {
            continue;
        }
    }
    return descObject;
}

From source file:com.xhsoft.framework.common.utils.ReflectUtil.java

/**
 * <p>Description:ReflectionMap?</p>
 * @param target/*  ww  w .  j a  v a2 s  .c  o m*/
 * @return Map<String,Object>
 * @author wanggq
 * @since  2009-9-9
 */
@SuppressWarnings("unchecked")
public static Map<String, Object> getMapFieldData(Object target) {
    Map<String, Object> map = new HashMap<String, Object>();
    Class clazz = target.getClass();
    Field[] fields = clazz.getDeclaredFields();
    Method[] methods = clazz.getDeclaredMethods();
    for (Field field : fields) {
        String fieldName = field.getName();

        if ("messageTypeId".equals(fieldName)) {
            continue;
        }

        String getMethod = "get" + StringUtils.capitalize(fieldName);
        for (Method method : methods) {
            if (method.getName().equals(getMethod)) {

                try {
                    Object ret = method.invoke(target, null);
                    map.put(fieldName, ret);
                } catch (IllegalArgumentException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (InvocationTargetException e) {
                    e.printStackTrace();
                }

            }

        }

    }

    return map;
}

From source file:Main.java

/**
 * Get all fields' value and put them to a map.
 * //from  ww  w.  j  a v  a 2 s .  co  m
 * @param bean
 * @return Map
 */
public static Map<String, Object> getFieldValueMap(Object bean) {
    Class<?> cls = bean.getClass();
    Map<String, Object> valueMap = new HashMap<String, Object>();
    // Get all fields.
    Field[] fields = cls.getDeclaredFields();

    for (Field field : fields) {
        try {
            field.setAccessible(true);
            Object value = field.get(bean);
            //            if(value == null) {
            //               valueMap.put(field.getName(), "");
            //               continue;
            //            }
            valueMap.put(field.getName(), value);
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
    return valueMap;
}

From source file:Main.java

/**
 * Returns all fields declared in the class passed as argument or in its super classes annotated with
 * the supplied annotation.//from  w  w  w.  j av a2 s.  c o m
 */
public static List<Field> getAllDeclaredField(Class<?> clazz, Class<? extends Annotation> annotationClass) {
    final List<Field> result = new LinkedList<Field>();
    for (final Field field : clazz.getDeclaredFields()) {
        final Object jakeOption = field.getAnnotation(annotationClass);
        if (jakeOption != null) {
            result.add(field);
        }
    }
    final Class<?> superClass = clazz.getSuperclass();
    if (superClass != null) {
        result.addAll(getAllDeclaredField(superClass, annotationClass));
    }
    return result;
}

From source file:com.jigsforjava.util.ClassUtils.java

private static void getAllDeclaredFields(Class<?> aClass, UnaryFunction function) {
    for (Field field : aClass.getDeclaredFields()) {
        try {//  ww  w .  j  a va 2s.  co m
            function.perform(field);
        } catch (FunctionException e) {
            e.printStackTrace();
        }
    }

    if (aClass.getSuperclass() != null) {
        getAllDeclaredFields(aClass.getSuperclass(), function);
    }
}

From source file:springobjectmapper.ReflectionHelper.java

public static List<Field> getFields(Class<?> c) {
    List<Field> results = new ArrayList<Field>();
    do {//from   w  w w  .  ja v a  2  s.co m
        Field[] fields = c.getDeclaredFields();
        for (Field field : fields) {
            if (isEntityField(field)) {
                results.add(field);
            }
            field.setAccessible(true);
        }
        c = c.getSuperclass();
    } while (c != null);
    return results;
}

From source file:com.evolveum.midpoint.prism.marshaller.XNodeProcessorUtil.java

public static <T> Field findXmlValueField(Class<T> beanClass) {
    for (Field field : beanClass.getDeclaredFields()) {
        XmlValue xmlValue = field.getAnnotation(XmlValue.class);
        if (xmlValue != null) {
            return field;
        }// ww  w .j  av  a2 s .c o  m
    }
    return null;
}