Example usage for org.apache.commons.lang3.reflect FieldUtils getField

Introduction

In this page you can find the example usage for org.apache.commons.lang3.reflect FieldUtils getField.

Prototype

public static Field getField(final Class<?> cls, final String fieldName) 

Source Link

Document

Gets an accessible Field by name respecting scope.

Usage

From source file:com.github.daddo.validation.validator.Util.java

public static Object accessStaticFieldByName(Class<?> clasz, String fieldName) {
    try {/*from  w  w w  .ja va2 s  .  c o  m*/
        Field field = FieldUtils.getField(clasz, fieldName);
        return FieldUtils.readStaticField(field);
    } catch (IllegalAccessException ex) {
        throw new StaticFieldAccessException("Unable to access field " + clasz.getName() + "#" + fieldName, ex);
    } catch (IllegalArgumentException ex) {
        throw new StaticFieldAccessException("Unable to access field " + clasz.getName() + "#" + fieldName, ex);
    }
}

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From source file:com.boozallen.cognition.ingest.storm.topology.ConfigurableIngestTopology.java

protected void configureStorm(Configuration conf, Config stormConf) throws IllegalAccessException {
    stormConf.registerSerialization(LogRecord.class);
    //stormConf.registerSerialization(Entity.class);
    stormConf.registerMetricsConsumer(LoggingMetricsConsumer.class);

    for (Iterator<String> iter = conf.getKeys(); iter.hasNext();) {
        String key = iter.next();

        String keyString = key.toString();
        String cleanedKey = keyString.replaceAll("\\.\\.", ".");

        String schemaFieldName = cleanedKey.replaceAll("\\.", "_").toUpperCase() + "_SCHEMA";
        Field field = FieldUtils.getField(Config.class, schemaFieldName);
        Object fieldObject = field.get(null);

        if (fieldObject == Boolean.class)
            stormConf.put(cleanedKey, conf.getBoolean(keyString));
        else if (fieldObject == String.class)
            stormConf.put(cleanedKey, conf.getString(keyString));
        else if (fieldObject == ConfigValidation.DoubleValidator)
            stormConf.put(cleanedKey, conf.getDouble(keyString));
        else if (fieldObject == ConfigValidation.IntegerValidator)
            stormConf.put(cleanedKey, conf.getInt(keyString));
        else if (fieldObject == ConfigValidation.PowerOf2Validator)
            stormConf.put(cleanedKey, conf.getLong(keyString));
        else if (fieldObject == ConfigValidation.StringOrStringListValidator)
            stormConf.put(cleanedKey, Arrays.asList(conf.getStringArray(keyString)));
        else if (fieldObject == ConfigValidation.StringsValidator)
            stormConf.put(cleanedKey, Arrays.asList(conf.getStringArray(keyString)));
        else {/*from w w  w .j  ava 2 s.c om*/
            logger.error(
                    "{} cannot be configured from XML. Consider configuring in navie storm configuration.");
            throw new UnsupportedOperationException(cleanedKey + " cannot be configured from XML");
        }
    }
}

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From source file:lineage2.gameserver.scripts.Scripts.java

/**
 * Method callScripts.//from  ww  w .j a va2 s .c  om
 * @param caller Player
 * @param className String
 * @param methodName String
 * @param args Object[]
 * @param variables Map<String,Object>
 * @return Object
 */
public Object callScripts(Player caller, String className, String methodName, Object[] args,
        Map<String, Object> variables) {
    Object o;
    Class<?> clazz;

    clazz = _classes.get(className);
    if (clazz == null) {
        _log.error("Script class " + className + " not found!");
        return null;
    }

    try {
        o = clazz.newInstance();
    } catch (Exception e) {
        _log.error("Scripts: Failed creating instance of " + clazz.getName(), e);
        return null;
    }

    if ((variables != null) && !variables.isEmpty()) {
        for (Map.Entry<String, Object> param : variables.entrySet()) {
            try {
                FieldUtils.writeField(o, param.getKey(), param.getValue());
            } catch (Exception e) {
                _log.error("Scripts: Failed setting fields for " + clazz.getName(), e);
            }
        }
    }

    if (caller != null) {
        try {
            Field field = null;
            if ((field = FieldUtils.getField(clazz, "self")) != null) {
                FieldUtils.writeField(field, o, caller.getRef());
            }
        } catch (Exception e) {
            _log.error("Scripts: Failed setting field for " + clazz.getName(), e);
        }
    }

    Object ret = null;
    try {
        Class<?>[] parameterTypes = new Class<?>[args.length];
        for (int i = 0; i < args.length; i++) {
            parameterTypes[i] = args[i] != null ? args[i].getClass() : null;
        }

        ret = MethodUtils.invokeMethod(o, methodName, args, parameterTypes);
    } catch (NoSuchMethodException nsme) {
        _log.error("Scripts: No such method " + clazz.getName() + "." + methodName + "()!");
    } catch (InvocationTargetException ite) {
        _log.error("Scripts: Error while calling " + clazz.getName() + "." + methodName + "()",
                ite.getTargetException());
    } catch (Exception e) {
        _log.error("Scripts: Failed calling " + clazz.getName() + "." + methodName + "()", e);
    }

    return ret;
}

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From source file:lineage2.gameserver.Config.java

/**
 * Method getField./*from  www.  ja  va  2 s. c  o  m*/
 * @param fieldName String
 * @return String
 */
public static String getField(String fieldName) {
    Field field = FieldUtils.getField(Config.class, fieldName);
    if (field == null) {
        return null;
    }
    try {
        return String.valueOf(field.get(null));
    } catch (IllegalArgumentException e) {
    } catch (IllegalAccessException e) {
    }
    return null;
}

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From source file:lineage2.gameserver.Config.java

/**
 * Method setField.// w w w .j  ava  2 s  . c o  m
 * @param fieldName String
 * @param value String
 * @return boolean
 */
public static boolean setField(String fieldName, String value) {
    Field field = FieldUtils.getField(Config.class, fieldName);
    if (field == null) {
        return false;
    }
    try {
        if (field.getType() == boolean.class) {
            field.setBoolean(null, BooleanUtils.toBoolean(value));
        } else if (field.getType() == int.class) {
            field.setInt(null, NumberUtils.toInt(value));
        } else if (field.getType() == long.class) {
            field.setLong(null, NumberUtils.toLong(value));
        } else if (field.getType() == double.class) {
            field.setDouble(null, NumberUtils.toDouble(value));
        } else if (field.getType() == String.class) {
            field.set(null, value);
        } else {
            return false;
        }
    } catch (IllegalArgumentException e) {
        return false;
    } catch (IllegalAccessException e) {
        return false;
    }
    return true;
}

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From source file:org.evosuite.setup.TestAccessField.java

@Test
public void testPublicField() {
    Properties.CLASS_PREFIX = "some.package";
    Properties.TARGET_CLASS = "some.package.Foo";
    Field f = FieldUtils.getField(com.examples.with.different.packagename.AccessExamples.class, "publicField");
    boolean result = TestUsageChecker.canUse(f);
    Assert.assertTrue(result);/*from  w  w w  .  ja v a2s .co  m*/
}

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From source file:org.evosuite.setup.TestAccessField.java

@Test
public void testPublicFieldTargetPackage() {
    Properties.CLASS_PREFIX = "com.examples.with.different.packagename";
    Properties.TARGET_CLASS = "com.examples.with.different.packagename.Foo";
    Field f = FieldUtils.getField(com.examples.with.different.packagename.AccessExamples.class, "publicField");
    boolean result = TestUsageChecker.canUse(f);
    Assert.assertTrue(result);//from   w  w  w .  ja  v  a 2 s . c om
}

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From source file:org.lambdamatic.analyzer.ast.node.FieldAccess.java

/**
 * Returns the underlying Java field.//from  ww  w. j av a  2s  .c  o  m
 */
@Override
public Object getValue() {
    try {
        return FieldUtils.getField(this.source.getJavaType(), getFieldName());
    } catch (IllegalArgumentException e) {
        throw new AnalyzeException(
                "Cannot retrieve field named '" + this.fieldName + "' on class " + this.source.getJavaType(),
                e);
    }
}

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