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:com.helpinput.utils.Utils.java

public static void setFieldValue(Object target, Field theField, Object value) {
    if (theField != null) {
        accessible(theField);/*w  w  w.j ava  2  s.  co m*/
        try {
            Object newValue = ConvertUtils.convert(value, theField.getType());
            theField.set(target, newValue);
        } catch (Exception e) {
            e.printStackTrace();
            logger.info(MessageFormat.format("convert error:{0},{1},{2}", target, theField, value));
        }
    }
}

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From source file:com.evolveum.midpoint.prism.xjc.PrismForJAXBUtil.java

private static <T> T getPropertyValue(PrismProperty<?> property, Class<T> requestedType) {
    if (property == null) {
        return null;
    }//w w w  . j a  v  a 2s.  c om

    PrismPropertyValue<?> pvalue = property.getValue();
    if (pvalue == null) {
        return null;
    }

    Object propertyRealValue = pvalue.getValue();

    if (propertyRealValue instanceof Element) {
        if (requestedType.isAssignableFrom(Element.class)) {
            return (T) propertyRealValue;
        }
        Field anyField = getAnyField(requestedType);
        if (anyField == null) {
            throw new IllegalArgumentException("Attempt to read raw property " + property
                    + " while the requested class (" + requestedType + ") does not have 'any' field");
        }
        anyField.setAccessible(true);
        Collection<?> anyElementList = property.getRealValues();
        T requestedTypeInstance;
        try {
            requestedTypeInstance = requestedType.newInstance();
            anyField.set(requestedTypeInstance, anyElementList);
        } catch (InstantiationException e) {
            throw new IllegalArgumentException("Instantiate error while reading raw property " + property
                    + ", requested class (" + requestedType + "):" + e.getMessage(), e);
        } catch (IllegalAccessException e) {
            throw new IllegalArgumentException(
                    "Illegal access error while reading raw property " + property + ", requested class ("
                            + requestedType + ")" + ", field " + anyField + ": " + e.getMessage(),
                    e);
        }
        return requestedTypeInstance;
    }

    return JaxbTypeConverter.mapPropertyRealValueToJaxb(propertyRealValue);
}

---

From source file:com.helpinput.core.Utils.java

public static void setFieldValue(Object target, Field theField, Object value) {
    if (theField != null) {
        setAccess(theField);//from   w  w w  . j a v a 2  s.  co m
        try {
            Object newValue = ConvertUtils.convert(value, theField.getType());
            theField.set(target, newValue);
        } catch (Exception e) {
            e.printStackTrace();
            logger.info(MessageFormat.format("convert error:{0},{1},{2}", target, theField, value));
        }
    }
}

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From source file:com.github.dactiv.common.utils.ReflectionUtils.java

/**
 * , private/protected, ??setter.// www  . ja  v  a2 s  . com
 * 
 * @param target
 *            Object
 * @param fieldName
 *            ??
 * @param value
 *            
 */
public static void setFieldValue(final Object target, final String fieldName, final Object value) {
    Assert.notNull(target, "target?");
    Assert.notNull(fieldName, "fieldName?");

    Field field = getAccessibleField(target, fieldName);

    if (field == null) {
        throw new IllegalArgumentException(
                "? [" + fieldName + "]  [" + target + "] ");
    }

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

---

From source file:net.ceos.project.poi.annotated.core.CsvHandler.java

/**
 * Apply a String value to the object./*from ww w .j  a  v  a  2s  .  c o m*/
 * 
 * @param o
 *            the object
 * @param field
 *            the field
 * @param values
 *            the array with the content at one line
 * @param idx
 *            the index of the field
 * @throws ConverterException
 *             the conversion exception type
 */
protected static void stringReader(final Object o, final Field field, final String[] values, final int idx)
        throws ConverterException {
    try {
        field.set(o, values[idx]);
    } catch (IllegalArgumentException | IllegalAccessException e) {
        throw new ConverterException(ExceptionMessage.CONVERTER_STRING.getMessage(), e);
    }
}

---

From source file:io.github.wysohn.triggerreactor.tools.ReflectionUtil.java

/**
 * https://stackoverflow.com/questions/3301635/change-private-static-final-field-using-java-reflection
 * @param field//  www.  java2  s  . c  o  m
 * @param newValue
 * @throws SecurityException
 * @throws NoSuchFieldException
 * @throws Exception
 */
private static void setFinalField(Object target, Field field, Object newValue) throws NoSuchFieldException {
    field.setAccessible(true);

    Field modifiersField = null;
    try {
        modifiersField = Field.class.getDeclaredField("modifiers");
    } catch (SecurityException e1) {
        e1.printStackTrace();
    }

    modifiersField.setAccessible(true);
    try {
        modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
    } catch (IllegalArgumentException | IllegalAccessException e) {
        e.printStackTrace();
    }

    try {
        field.set(target, newValue);
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
}

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From source file:Main.java

public static void setField(Object object, String fieldName, Object fieldValue) {
    Class<?> objectClass = object.getClass();
    if (objectClass != null) {
        try {/* w  ww  .ja v  a2s  . c  om*/
            Field field = objectClass.getDeclaredField(fieldName);
            field.setAccessible(true);
            Type type = field.getGenericType();

            //This is bad, but dear God I can't figure out how to convert a runtime Type to its actual type through reflection. I know how in C#....
            if (type.toString().toLowerCase().contains("short")) {
                fieldValue = Short.parseShort((String) fieldValue);
            }

            else if (type.toString().toLowerCase().contains("integer")) {
                fieldValue = Integer.parseInt((String) fieldValue);
            }

            else if (type.toString().toLowerCase().contains("long")) {
                fieldValue = Long.parseLong((String) fieldValue);
            }

            else if (type.toString().toLowerCase().contains("boolean")) {
                fieldValue = "1".equals(fieldValue); //Java, you're the worst language. And SQLite isn't helping.
            }

            field.set(object, fieldValue);
        }

        catch (NoSuchFieldException e) {
            return;
        }

        catch (Exception e) {
            throw new IllegalStateException(e);
        }
    }
}

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From source file:net.java.sip.communicator.impl.certificate.CertificateServiceImpl.java

/**
 * Appends an index number to the alias of each entry in the KeyStore.
 * /*w w  w  .j a  va 2 s .com*/
 * The Windows TrustStore might contain multiple entries with the same
 * "Friendly Name", which is directly used as the "Alias" for the KeyStore.
 * As all operations of the KeyStore operate with these non-unique names,
 * PKIX path building could fail and in the end lead to certificate warnings
 * for perfectly valid certificates.
 * 
 * @throws Exception when the aliases could not be renamed.
 */
private static int keyStoreAppendIndex(KeyStore ks) throws Exception {
    Field keyStoreSpiField = ks.getClass().getDeclaredField("keyStoreSpi");
    keyStoreSpiField.setAccessible(true);
    KeyStoreSpi keyStoreSpi = (KeyStoreSpi) keyStoreSpiField.get(ks);

    if ("sun.security.mscapi.KeyStore$ROOT".equals(keyStoreSpi.getClass().getName())) {
        Field entriesField = keyStoreSpi.getClass().getEnclosingClass().getDeclaredField("entries");
        entriesField.setAccessible(true);
        Collection<?> entries = (Collection<?>) entriesField.get(keyStoreSpi);

        int i = 0;
        for (Object entry : entries) {
            Field aliasField = entry.getClass().getDeclaredField("alias");
            aliasField.setAccessible(true);
            String alias = (String) aliasField.get(entry);
            aliasField.set(entry, alias.concat("_").concat(Integer.toString(i++)));
        }

        return i;
    }

    return -1;
}

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From source file:model.BaseModel.java

public boolean setAttribute(String key, String value) {
    try {//from ww  w  .  jav a2s .com
        Field field = this.getClass().getDeclaredField(key);
        field.setAccessible(true);
        field.set(this, value);
    } catch (SecurityException | IllegalAccessException | NoSuchFieldException ex) {
        return false;
    }
    return true;
}

---

From source file:cn.aposoft.util.spring.ReflectionUtils.java

/**
 * Given the source object and the destination, which must be the same class
 * or a subclass, copy all fields, including inherited fields. Designed to
 * work on objects with public no-arg constructors.
 *//* ww w  .  j a va 2 s  .  c  om*/
public static void shallowCopyFieldState(final Object src, final Object dest) {
    if (src == null) {
        throw new IllegalArgumentException("Source for field copy cannot be null");
    }
    if (dest == null) {
        throw new IllegalArgumentException("Destination for field copy cannot be null");
    }
    if (!src.getClass().isAssignableFrom(dest.getClass())) {
        throw new IllegalArgumentException("Destination class [" + dest.getClass().getName()
                + "] must be same or subclass as source class [" + src.getClass().getName() + "]");
    }
    doWithFields(src.getClass(), new FieldCallback() {
        @Override
        public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
            makeAccessible(field);
            Object srcValue = field.get(src);
            field.set(dest, srcValue);
        }
    }, COPYABLE_FIELDS);
}

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