Example usage for java.lang.reflect Field set

Introduction

In this page you can find the example usage for java.lang.reflect Field set.

Prototype

@CallerSensitive
@ForceInline 
public void set(Object obj, Object value) throws IllegalArgumentException, IllegalAccessException 

Source Link

Document

Sets the field represented by this Field object on the specified object argument to the specified new value.

Usage

From source file:io.pivotal.spring.xd.jdbcgpfdist.TestUtils.java

public static void setField(String name, Object target, Object value) throws Exception {
    Field field = null;
    Class<?> clazz = target.getClass();
    do {/* ww  w .  j  a v a  2s .c  om*/
        try {
            field = clazz.getDeclaredField(name);
        } catch (Exception ex) {
        }

        clazz = clazz.getSuperclass();
    } while (field == null && !clazz.equals(Object.class));

    if (field == null)
        throw new IllegalArgumentException(
                "Cannot find field '" + name + "' in the class hierarchy of " + target.getClass());
    field.setAccessible(true);
    field.set(target, value);
}

---

From source file:info.donsun.core.utils.Reflections.java

/**
 * , private/protected, ??setter./*  w w  w. j  a v  a  2 s.  com*/
 */
public static void setFieldValue(final Class<?> clazz, final String fieldName, final Object value) {
    Field field = getAccessibleField(clazz, fieldName);

    if (field == null) {
        throw new IllegalArgumentException(
                "Could not find field [" + fieldName + "] on target [" + clazz + "]");
    }

    try {
        field.set(clazz, value);
    } catch (IllegalAccessException e) {
        logger.error("setFieldValue:{}", e.getMessage());
    }
}

---

From source file:com.gson.WeChat.java

/**
 * ???//from ww  w.  j  av  a 2s .  c  o  m
 * @param oms
 * @param msg
 * @throws Exception
 */
private static void setMsgInfo(OutMessage oms, InMessage msg) throws Exception {
    if (oms != null) {
        Class<?> outMsg = oms.getClass().getSuperclass();
        Field CreateTime = outMsg.getDeclaredField("CreateTime");
        Field ToUserName = outMsg.getDeclaredField("ToUserName");
        Field FromUserName = outMsg.getDeclaredField("FromUserName");

        ToUserName.setAccessible(true);
        CreateTime.setAccessible(true);
        FromUserName.setAccessible(true);

        CreateTime.set(oms, new Date().getTime());
        ToUserName.set(oms, msg.getFromUserName());
        FromUserName.set(oms, msg.getToUserName());
    }
}

---

From source file:com.braffdev.server.core.container.injection.DependencyInjector.java

/**
 * Injects the given dependency to the given field of the given object.
 *
 * @param field the field to inject.//from   www .  j  av a 2s  .  co m
 * @param target the object.
 * @param dependencyName the name of the dependency.
 * @param dependency the dependency to inject.
 */
private static void injectFieldDependency(Field field, Object target, String dependencyName,
        Object dependency) {
    Class<?> fieldClass = field.getType();
    if (!dependency.getClass().isAssignableFrom(fieldClass)) {
        LOGGER.error("Dependency \"" + dependencyName + "\"  (class " + dependency.getClass().getName()
                + ") cannot be injected. This class is not assignable from the target field");
        return;
    }

    try {
        field.setAccessible(true);
        field.set(target, dependency);

        LOGGER.debug("Injected dependency \"" + dependencyName + "\" of class \"" + target.getClass() + "\"");
    } catch (Throwable t) {
        LOGGER.error("Cannot inject dependency \"" + dependencyName + "\"", t);
    }
}

---

From source file:edu.mit.csail.sdg.alloy4.Terminal.java

/** Copy the required files from the JAR into a temporary directory. */
private static void copyFromJAR() {
    // Compute the appropriate platform
    String os = System.getProperty("os.name").toLowerCase(Locale.US).replace(' ', '-');
    if (os.startsWith("mac-"))
        os = "mac";
    else if (os.startsWith("windows-"))
        os = "windows";
    String arch = System.getProperty("os.arch").toLowerCase(Locale.US).replace(' ', '-');
    if (arch.equals("powerpc"))
        arch = "ppc-" + os;
    else/*from   w  w  w . j av a 2s.com*/
        arch = arch.replaceAll("\\Ai[3456]86\\z", "x86") + "-" + os;
    if (os.equals("mac"))
        arch = "x86-mac"; // our pre-compiled binaries are all universal binaries
    // Find out the appropriate Alloy directory
    final String platformBinary = alloyHome() + fs + "binary";
    // Write a few test files
    try {
        (new File(platformBinary)).mkdirs();
        Util.writeAll(platformBinary + fs + "tmp.cnf", "p cnf 3 1\n1 0\n");
    } catch (Err er) {
        // The error will be caught later by the "berkmin" or "spear" test
    }
    // Copy the platform-dependent binaries
    Util.copy(true, false, platformBinary, arch + "/libminisat.so", arch + "/libminisatx1.so",
            arch + "/libminisat.jnilib", arch + "/libminisatprover.so", arch + "/libminisatproverx1.so",
            arch + "/libminisatprover.jnilib", arch + "/libzchaff.so", arch + "/libzchaffx1.so",
            arch + "/libzchaff.jnilib", arch + "/berkmin", arch + "/spear");
    Util.copy(false, false, platformBinary, arch + "/minisat.dll", arch + "/minisatprover.dll",
            arch + "/zchaff.dll", arch + "/berkmin.exe", arch + "/spear.exe");
    // Copy the model files
    Util.copy(false, true, alloyHome(), "models/book/appendixA/addressBook1.als",
            "models/book/appendixA/addressBook2.als", "models/book/appendixA/barbers.als",
            "models/book/appendixA/closure.als", "models/book/appendixA/distribution.als",
            "models/book/appendixA/phones.als", "models/book/appendixA/prison.als",
            "models/book/appendixA/properties.als", "models/book/appendixA/ring.als",
            "models/book/appendixA/spanning.als", "models/book/appendixA/tree.als",
            "models/book/appendixA/tube.als", "models/book/appendixA/undirected.als",
            "models/book/appendixE/hotel.thm", "models/book/appendixE/p300-hotel.als",
            "models/book/appendixE/p303-hotel.als", "models/book/appendixE/p306-hotel.als",
            "models/book/chapter2/addressBook1a.als", "models/book/chapter2/addressBook1b.als",
            "models/book/chapter2/addressBook1c.als", "models/book/chapter2/addressBook1d.als",
            "models/book/chapter2/addressBook1e.als", "models/book/chapter2/addressBook1f.als",
            "models/book/chapter2/addressBook1g.als", "models/book/chapter2/addressBook1h.als",
            "models/book/chapter2/addressBook2a.als", "models/book/chapter2/addressBook2b.als",
            "models/book/chapter2/addressBook2c.als", "models/book/chapter2/addressBook2d.als",
            "models/book/chapter2/addressBook2e.als", "models/book/chapter2/addressBook3a.als",
            "models/book/chapter2/addressBook3b.als", "models/book/chapter2/addressBook3c.als",
            "models/book/chapter2/addressBook3d.als", "models/book/chapter2/theme.thm",
            "models/book/chapter4/filesystem.als", "models/book/chapter4/grandpa1.als",
            "models/book/chapter4/grandpa2.als", "models/book/chapter4/grandpa3.als",
            "models/book/chapter4/lights.als", "models/book/chapter5/addressBook.als",
            "models/book/chapter5/lists.als", "models/book/chapter5/sets1.als",
            "models/book/chapter5/sets2.als", "models/book/chapter6/hotel.thm",
            "models/book/chapter6/hotel1.als", "models/book/chapter6/hotel2.als",
            "models/book/chapter6/hotel3.als", "models/book/chapter6/hotel4.als",
            "models/book/chapter6/mediaAssets.als", "models/book/chapter6/memory/abstractMemory.als",
            "models/book/chapter6/memory/cacheMemory.als", "models/book/chapter6/memory/checkCache.als",
            "models/book/chapter6/memory/checkFixedSize.als", "models/book/chapter6/memory/fixedSizeMemory.als",
            "models/book/chapter6/memory/fixedSizeMemory_H.als", "models/book/chapter6/ringElection.thm",
            "models/book/chapter6/ringElection1.als", "models/book/chapter6/ringElection2.als",
            "models/examples/algorithms/dijkstra.als", "models/examples/algorithms/dijkstra.thm",
            "models/examples/algorithms/messaging.als", "models/examples/algorithms/messaging.thm",
            "models/examples/algorithms/opt_spantree.als", "models/examples/algorithms/opt_spantree.thm",
            "models/examples/algorithms/peterson.als", "models/examples/algorithms/ringlead.als",
            "models/examples/algorithms/ringlead.thm", "models/examples/algorithms/s_ringlead.als",
            "models/examples/algorithms/stable_mutex_ring.als",
            "models/examples/algorithms/stable_mutex_ring.thm",
            "models/examples/algorithms/stable_orient_ring.als",
            "models/examples/algorithms/stable_orient_ring.thm",
            "models/examples/algorithms/stable_ringlead.als", "models/examples/algorithms/stable_ringlead.thm",
            "models/examples/case_studies/INSLabel.als", "models/examples/case_studies/chord.als",
            "models/examples/case_studies/chord2.als", "models/examples/case_studies/chordbugmodel.als",
            "models/examples/case_studies/com.als", "models/examples/case_studies/firewire.als",
            "models/examples/case_studies/firewire.thm", "models/examples/case_studies/ins.als",
            "models/examples/case_studies/iolus.als", "models/examples/case_studies/sync.als",
            "models/examples/case_studies/syncimpl.als", "models/examples/puzzles/farmer.als",
            "models/examples/puzzles/farmer.thm", "models/examples/puzzles/handshake.als",
            "models/examples/puzzles/handshake.thm", "models/examples/puzzles/hanoi.als",
            "models/examples/puzzles/hanoi.thm", "models/examples/systems/file_system.als",
            "models/examples/systems/file_system.thm", "models/examples/systems/javatypes_soundness.als",
            "models/examples/systems/lists.als", "models/examples/systems/lists.thm",
            "models/examples/systems/marksweepgc.als", "models/examples/systems/views.als",
            "models/examples/toys/birthday.als", "models/examples/toys/birthday.thm",
            "models/examples/toys/ceilingsAndFloors.als", "models/examples/toys/ceilingsAndFloors.thm",
            "models/examples/toys/genealogy.als", "models/examples/toys/genealogy.thm",
            "models/examples/toys/grandpa.als", "models/examples/toys/grandpa.thm",
            "models/examples/toys/javatypes.als", "models/examples/toys/life.als",
            "models/examples/toys/life.thm", "models/examples/toys/numbering.als",
            "models/examples/toys/railway.als", "models/examples/toys/railway.thm",
            "models/examples/toys/trivial.als", "models/examples/tutorial/farmer.als",
            "models/util/boolean.als", "models/util/graph.als", "models/util/integer.als",
            "models/util/natural.als", "models/util/ordering.als", "models/util/relation.als",
            "models/util/seqrel.als", "models/util/sequence.als", "models/util/sequniv.als",
            "models/util/ternary.als", "models/util/time.als");
    // Record the locations
    System.setProperty("alloy.theme0", alloyHome() + fs + "models");
    System.setProperty("alloy.home", alloyHome());

    try {
        // It doesn't work to set the env variable after java is started but this hack makes it work see
        // http://blog.cedarsoft.com/2010/11/setting-java-library-path-programmatically/
        System.setProperty("java.library.path", platformBinary);
        Field fieldSysPath = ClassLoader.class.getDeclaredField("sys_paths");
        fieldSysPath.setAccessible(true);
        fieldSysPath.set(null, null);
    } catch (SecurityException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (NoSuchFieldException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

---

From source file:com.evolveum.midpoint.repo.sql.util.RUtil.java

private static void fixCompositeIdentifierInMetaModel(SessionFactory sessionFactory, Class clazz) {
    ClassMetadata classMetadata = sessionFactory.getClassMetadata(clazz);
    if (classMetadata instanceof AbstractEntityPersister) {
        AbstractEntityPersister persister = (AbstractEntityPersister) classMetadata;
        EntityMetamodel model = persister.getEntityMetamodel();
        IdentifierProperty identifier = model.getIdentifierProperty();

        try {//w  w  w. j av  a  2s . c  o  m
            Field field = IdentifierProperty.class.getDeclaredField("hasIdentifierMapper");
            field.setAccessible(true);
            field.set(identifier, true);
            field.setAccessible(false);
        } catch (Exception ex) {
            throw new SystemException(
                    "Attempt to fix entity meta model with hack failed, reason: " + ex.getMessage(), ex);
        }
    }
}

---

From source file:com.fengduo.bee.commons.util.ObjectUtils.java

/**
 * string?trim?//ww w . ja  v a2  s.c  o  m
 * 
 * @param object
 * @throws Exception
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
private static void trimStringField(Object object, Class<?> clazz) throws Exception {
    if (object instanceof Map<?, ?>) {
        Map<Object, Object> target = new HashMap<Object, Object>();
        for (Entry<?, ?> entry : ((Map<?, ?>) object).entrySet()) {
            Object key = entry.getKey();
            Object value = entry.getValue();

            if (key instanceof String) {
                key = StringUtils.trim((String) key);
            } else {
                trim(key);
            }

            if (value instanceof String) {
                value = StringUtils.trim((String) value);
                value = StringUtils.replace((String) value, "\"", StringUtils.EMPTY);
            } else {
                trim(value);
            }
            target.put(key, value);
        }
        ((Map<?, ?>) object).clear();
        ((Map) object).putAll((Map) target);
        return;
    }
    Field[] fields = clazz.getDeclaredFields();
    for (Field field : fields) {
        if (field.getType() == String.class) {
            boolean isFoolback = false;
            if (field.isAccessible() == false) {
                isFoolback = true;
                field.setAccessible(true);
            }
            String value = (String) field.get(object);
            if (StringUtils.isNotEmpty(value)) {
                value = value.trim();
                field.set(object, value);
            }
            if (isFoolback) {
                field.setAccessible(false);
            }
        }
    }
}

---

From source file:com.mh.commons.utils.Reflections.java

/**
 * , private/protected, ??setter./* w w  w.j  av  a2  s .  c  om*/
 */
public static void setFieldValue(final Object object, final String fieldName, final Object value) {
    Field field = getDeclaredField(object, fieldName);

    if (field == null) {
        throw new IllegalArgumentException(
                "Could not find field [" + fieldName + "] on target [" + object + "]");
    }

    makeAccessible(field);

    try {
        field.set(object, value);
    } catch (IllegalAccessException e) {
        if (logger.isDebugEnabled()) {
            logger.error("" + e.getMessage() + ", [ReflectionUtils.setFieldValue]",
                    e);
        }
    }
}

---

From source file:com.plusub.lib.annotate.JsonParserUtils.java

/**
 * /*www. j a  va2  s  . c om*/
 * <p>Title: setFieldValue
 * <p>Description: 
 * @param object 
 * @param field 
 * @param value 
 */
private static void setFieldValue(Object object, Field field, Object value) {
    Object ov = null;
    try {
        ov = getType(field, value, field.getName());
        field.set(object, ov);
    } catch (IllegalAccessException e) {
        // TODO Auto-generated catch block
        if (showLog) {
            e.printStackTrace();
        }

        //fieldset
        try {
            Method m = object.getClass().getMethod(getSetMethodName(field), field.getType());
            if (m != null) {
                m.invoke(object, ov);
            }
        } catch (Exception e1) {
            // TODO Auto-generated catch block
            if (showLog) {
                Logger.e(TAG,
                        "set field value fail field:" + field.getName() + " method:" + getSetMethodName(field));
                e1.printStackTrace();
            }
        }
    } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        if (showLog) {
            e.printStackTrace();
        }
    } catch (Exception e) {
        if (showLog) {
            e.printStackTrace();
        }
    }
}

---

From source file:com.yahoo.egads.data.JsonEncoder.java

public static void fromJson(Object object, JSONObject json_obj) throws Exception {
    // for each json key-value, that has a corresponding variable in object ...
    for (Iterator k = json_obj.keys(); k.hasNext();) {
        String key = (String) k.next();
        Object value = json_obj.get(key);

        // try to access object variable
        Field field = null;
        try {/*from  w w  w .  j a v a  2s.c  om*/
            field = object.getClass().getField(key);
        } catch (Exception e) {
            continue;
        }
        if (Modifier.isStatic(field.getModifiers())) {
            continue;
        }
        if (Modifier.isPrivate(field.getModifiers())) {
            continue;
        }
        Object member = field.get(object);

        if (json_obj.isNull(key)) {
            field.set(object, null);
            continue;
            // if variable is container... recurse
        } else if (member instanceof JsonAble) {
            ((JsonAble) member).fromJson((JSONObject) value);
            // if variable is an array... recurse on sub-objects
        } else if (member instanceof ArrayList) {
            // Depends on existance of ArrayList<T> template parameter, and T constructor with no arguments.
            // May be better to use custom fromJson() in member class.
            ArrayList memberArray = (ArrayList) member;
            JSONArray jsonArray = (JSONArray) value;

            // find array element constructor
            ParameterizedType arrayType = null;
            if (field.getGenericType() instanceof ParameterizedType) {
                arrayType = (ParameterizedType) field.getGenericType();
            }
            for (Class c = member.getClass(); arrayType == null && c != null; c = c.getSuperclass()) {
                if (c.getGenericSuperclass() instanceof ParameterizedType) {
                    arrayType = (ParameterizedType) c.getGenericSuperclass();
                }
            }
            if (arrayType == null) {
                throw new Exception("could not find ArrayList element type for field 'key'");
            }
            Class elementClass = (Class) (arrayType.getActualTypeArguments()[0]);
            Constructor elementConstructor = elementClass.getConstructor();

            // for each element in JSON array ... append element to member array, recursively decode element
            for (int i = 0; i < jsonArray.length(); ++i) {
                Object element = elementConstructor.newInstance();
                fromJson(element, jsonArray.getJSONObject(i));
                memberArray.add(element);
            }
            // if variable is simple value... set
        } else if (field.getType() == float.class) {
            field.set(object, (float) json_obj.getDouble(key));
        } else {
            field.set(object, value);
        }
    }
}

---

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