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:com.smart.utils.ReflectionUtils.java

/**
 * ?classString,list,listString/*from w  w w.ja  va2  s.c  o  m*/
 * 
 * @param clz
 * @return
 */
public static List<String> getAllFieldNames(Class clz) {
    List result = new ArrayList();
    Map allFields = new HashMap();
    // ???
    List classFamilyTree = new LinkedList();
    classFamilyTree.add(clz);
    Class tempSuperClass = clz;
    while ((tempSuperClass = tempSuperClass.getSuperclass()) != null) {
        classFamilyTree.add(tempSuperClass);
    }
    // Map???field??????
    for (int i = classFamilyTree.size() - 1; i >= 0; i--) {
        Class tempClass = (Class) classFamilyTree.get(i);
        Field[] fieldsOfTempClass = tempClass.getDeclaredFields();
        for (int j = 0; j < fieldsOfTempClass.length; j++) {
            Field field = fieldsOfTempClass[j];
            allFields.put(field.getName(), field.getName());
        }
    }
    // map?list
    for (Iterator iter = allFields.entrySet().iterator(); iter.hasNext();) {
        Map.Entry entry = (Map.Entry) iter.next();
        result.add(entry.getValue());
    }
    return result;
}

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From source file:com.smart.utils.ReflectionUtils.java

/**
 * ?classFieldlistlistField//from  w w  w  . ja  v  a2 s. c o m
 * 
 * @param clz
 * @return
 */
public static List<Field> getAllFields(Class clz) {
    List result = new ArrayList();
    Map allFields = new HashMap();
    // ???
    List classFamilyTree = new LinkedList();
    classFamilyTree.add(clz);
    Class tempSuperClass = clz;
    while ((tempSuperClass = tempSuperClass.getSuperclass()) != null) {
        classFamilyTree.add(tempSuperClass);
    }
    // Map???field??????
    for (int i = classFamilyTree.size() - 1; i >= 0; i--) {
        Class tempClass = (Class) classFamilyTree.get(i);
        Field[] fieldsOfTempClass = tempClass.getDeclaredFields();
        for (int j = 0; j < fieldsOfTempClass.length; j++) {
            Field field = fieldsOfTempClass[j];
            allFields.put(field.getName(), field);
        }
    }

    // map?list
    for (Iterator iter = allFields.entrySet().iterator(); iter.hasNext();) {
        Map.Entry entry = (Map.Entry) iter.next();
        result.add(entry.getValue());
    }
    return result;
}

---

From source file:Mopex.java

/**
 * Returns an array of fields that are the declared instance variables of
 * cls. An instance variable is a field that is not static.
 * /*from  w ww . ja v  a 2  s  .co  m*/
 * @return java.lang.reflect.Field[]
 * @param cls
 *            java.lang.Class
 */
//start extract getDeclaredIVS
public static Field[] getDeclaredIVs(Class cls) {
    Field[] fields = cls.getDeclaredFields();
    // Count the IVs
    int numberOfIVs = 0;
    for (int i = 0; i < fields.length; i++) {
        if (!Modifier.isStatic(fields[i].getModifiers()))
            numberOfIVs++;
    }
    Field[] declaredIVs = new Field[numberOfIVs];
    // Populate declaredIVs
    int j = 0;
    for (int i = 0; i < fields.length; i++) {
        if (!Modifier.isStatic(fields[i].getModifiers()))
            declaredIVs[j++] = fields[i];
    }
    return declaredIVs;
}

---

From source file:com.datumbox.common.persistentstorage.factories.MongoDBStructureFactory.java

public static List<Field> getAllFields(List<Field> fields, Class<?> type) {
    fields.addAll(Arrays.asList(type.getDeclaredFields()));

    if (type.getSuperclass() != null) {
        fields = getAllFields(fields, type.getSuperclass());
    }/*from  ww w. j av a2s  . co  m*/

    return fields;
}

---

From source file:com.igormaznitsa.upom.UPomModel.java

private static Field findDeclaredFieldForName(final Class klazz, final String fieldName) {
    Field result = null;/*from   w ww .j  a v  a  2s  .c  o m*/
    Class curr = klazz;
    while (curr.getName().startsWith(MAVEN_MODEL_PACKAGE_PREFIX)) {
        for (final Field m : curr.getDeclaredFields()) {
            if (m.getName().equalsIgnoreCase(fieldName)) {
                result = m;
                break;
            }
        }
        if (result != null) {
            result.setAccessible(true);
            break;
        }
        curr = klazz.getSuperclass();
    }
    return result;
}

---

From source file:com.alibaba.jstorm.cluster.StormConfig.java

public static HashMap<String, Object> getClassFields(Class<?> cls)
        throws IllegalArgumentException, IllegalAccessException {
    Field[] list = cls.getDeclaredFields();
    HashMap<String, Object> rtn = new HashMap<String, Object>();
    for (Field f : list) {
        String name = f.getName();
        rtn.put(name, f.get(null).toString());

    }/*from   w  w w . j a  va  2  s  . c om*/
    return rtn;
}

---

From source file:gr.abiss.calipso.jpasearch.specifications.GenericSpecifications.java

public static Map<String, String[]> getSimpleSearchTerms(Class<?> clazz, String[] values) {
    Map<String, String[]> simpleSearchTerms = new HashMap<String, String[]>();
    Class<?> tmpClass = clazz;

    // try the cache first
    List<Field> simpleSearchFieldList = SIMPLE_SEARCH_FIELDs_CACHE.get(clazz);
    if (simpleSearchFieldList == null) {
        simpleSearchFieldList = new LinkedList<Field>();
        while (tmpClass != null) {
            for (Field tmpField : tmpClass.getDeclaredFields()) {
                String fieldName = tmpField.getName();
                // if string and not excluded
                if (isAcceptableSimpleSearchFieldClass(tmpField)
                        && !tmpField.isAnnotationPresent(Transient.class)
                        && !tmpField.isAnnotationPresent(JsonIgnore.class)) {

                    simpleSearchTerms.put(fieldName, values);
                    simpleSearchFieldList.add(tmpField);
                }//w  w w.j a v a 2 s . c o m
            }
            tmpClass = tmpClass.getSuperclass();
        }
        // update the cache
        SIMPLE_SEARCH_FIELDs_CACHE.put(clazz, simpleSearchFieldList);
    } else {
        // use the caches field list
        for (Field tmpField : simpleSearchFieldList) {
            simpleSearchTerms.put(tmpField.getName(), values);
        }
    }
    return simpleSearchTerms;
}

---

From source file:ml.shifu.shifu.container.meta.MetaFactory.java

/**
 * Iterate each property of Object, get the value and validate
 * //from   w ww.j a va 2  s. c  om
 * @param isGridSearch
 *            - if grid search, ignore validation in train#params as they are set all as list
 * @param ptag
 *            - the prefix of key to search @MetaItem
 * @param obj
 *            - the object to validate
 * @return ValidateResult
 *         If all items are OK, the ValidateResult.status will be true;
 *         Or the ValidateResult.status will be false, ValidateResult.causes will contain the reasons
 * @throws Exception
 *             any exception in validaiton
 */
public static ValidateResult iterateCheck(boolean isGridSearch, String ptag, Object obj) throws Exception {
    ValidateResult result = new ValidateResult(true);
    if (obj == null) {
        return result;
    }

    Class<?> cls = obj.getClass();
    Field[] fields = cls.getDeclaredFields();

    Class<?> parentCls = cls.getSuperclass();
    if (!parentCls.equals(Object.class)) {
        Field[] pfs = parentCls.getDeclaredFields();
        fields = (Field[]) ArrayUtils.addAll(fields, pfs);
    }

    for (Field field : fields) {
        if (!field.isSynthetic() && !Modifier.isStatic(field.getModifiers()) && !isJsonIngoreField(field)) {
            Method method = cls.getMethod("get" + getMethodName(field.getName()));
            Object value = method.invoke(obj);

            encapsulateResult(result,
                    validate(isGridSearch, ptag + ITEM_KEY_SEPERATOR + field.getName(), value));
        }
    }

    return result;
}

---

From source file:com.mmj.app.lucene.solr.client.SolrClient.java

public static Object toBean(SolrDocument record, Class<?> clazz) {

    Object o = null;/*from  w  ww . jav  a  2  s  .  c om*/
    try {
        o = clazz.newInstance();
    } catch (InstantiationException e1) {
        e1.printStackTrace();
    } catch (IllegalAccessException e1) {
        e1.printStackTrace();
    }
    Field[] fields = clazz.getDeclaredFields();
    for (Field field : fields) {
        Object value = record.get(field.getName());
        ConvertUtils.register(new DateConverter(null), java.util.Date.class);
        try {
            BeanUtils.setProperty(o, field.getName(), value);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
    }
    return o;
}

---

From source file:ml.shifu.shifu.container.meta.MetaFactory.java

/**
 * Validate the ModelConfig object, to make sure each item follow the constrain
 * //  ww w.  j  av  a  2 s . co  m
 * @param modelConfig
 *            - object to validate
 * @return ValidateResult
 *         If all items are OK, the ValidateResult.status will be true;
 *         Or the ValidateResult.status will be false, ValidateResult.causes will contain the reasons
 * @throws Exception
 *             any exception in validaiton
 */
public static ValidateResult validate(ModelConfig modelConfig) throws Exception {
    ValidateResult result = new ValidateResult(true);

    GridSearch gs = new GridSearch(modelConfig.getTrain().getParams(),
            modelConfig.getTrain().getGridConfigFileContent());

    Class<?> cls = modelConfig.getClass();
    Field[] fields = cls.getDeclaredFields();

    for (Field field : fields) {
        // skip log instance
        if (field.getName().equalsIgnoreCase("log") || field.getName().equalsIgnoreCase("logger")) {
            continue;
        }
        if (!field.isSynthetic()) {
            Method method = cls.getMethod("get" + getMethodName(field.getName()));
            Object value = method.invoke(modelConfig);

            if (value instanceof List) {
                List<?> objList = (List<?>) value;
                for (Object obj : objList) {
                    encapsulateResult(result, iterateCheck(gs.hasHyperParam(), field.getName(), obj));
                }
            } else {
                encapsulateResult(result, iterateCheck(gs.hasHyperParam(), field.getName(), value));
            }
        }
    }

    return result;
}

---

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