Example usage for java.beans Introspector getBeanInfo

Introduction

In this page you can find the example usage for java.beans Introspector getBeanInfo.

Prototype

public static BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException 

Source Link

Document

Introspect on a Java Bean and learn about all its properties, exposed methods, and events.

Usage

From source file:com.github.hateoas.forms.spring.uber.UberUtils.java

private static PropertyDescriptor[] getPropertyDescriptors(Object bean) {
    try {/*from   w  w w .j  av a 2  s. c o m*/
        return Introspector.getBeanInfo(bean.getClass()).getPropertyDescriptors();
    } catch (IntrospectionException e) {
        throw new RuntimeException("failed to get property descriptors of bean " + bean, e);
    }
}

---

From source file:BeanUtility.java

public static Class getPropertyType(Object o, String propertyName) throws Exception {
    PropertyDescriptor[] pds = Introspector.getBeanInfo(o.getClass()).getPropertyDescriptors();
    for (int i = 0; i < pds.length; i++) {
        if (pds[i].getName().equals(propertyName)) {
            return pds[i].getPropertyType();
        }// www . j a  v  a  2 s.  c  o  m
    }
    throw new Exception("Property not found.");
}

---

From source file:org.dphibernate.serialization.HibernateDeserializer.java

private Object readBean(Object obj) {
    try {/*  www. j  ava2 s  .  c  o m*/
        BeanInfo info = Introspector.getBeanInfo(obj.getClass());
        for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
            String propName = pd.getName();
            if (!"class".equals(propName) && !"annotations".equals(propName)
                    && !"hibernateLazyInitializer".equals(propName)) {
                Object val = pd.getReadMethod().invoke(obj, null);
                if (val != null) {
                    Object newVal = translate(val, pd.getPropertyType());
                    try {
                        Method writeMethod = pd.getWriteMethod();
                        if (writeMethod != null) {
                            writeMethod.invoke(obj, newVal);
                        }
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                        throw new RuntimeException(e);
                    } catch (NullPointerException npe) {
                        throw npe;
                    }

                }
            }
        }
    } catch (Exception ex) {
        ex.printStackTrace();
        throw new RuntimeException(ex);
    }
    return obj;
}

---

From source file:org.geotools.filter.function.PropertyExistsFunction.java

/**
 * @return {@link Boolean#TRUE} if the Class of the object passed as
 *         argument defines a property names as the property name passed as
 *         this function argument, following the standard Java Beans naming
 *         conventions for getters. {@link Boolean#FALSE} otherwise.
 *///from  w  w  w .j  a  va2s . co  m
public Object evaluate(Object bean) {
    if (bean instanceof SimpleFeature) {
        return evaluate((SimpleFeature) bean);
    }

    final String propName = getPropertyName();

    try {
        Class type = bean.getClass();
        //quick 1
        //            try {
        //                String getName = "get"+propName.substring(0,1).toUpperCase()+propName.substring(1);
        //                if (type.getMethod(getName, new Class[0]) != null) {
        //                    return true;
        //                }
        //            } catch (Exception ignore) {
        //            }
        //            // quick 2
        //            try {
        //                String isName = "is"+propName.substring(0,1).toUpperCase()+propName.substring(1);
        //                if (type.getMethod(isName, new Class[0]) != null) {
        //                    return true;
        //                }
        //            } catch (Exception ignore) {
        //            }
        // okay go for real
        BeanInfo info = Introspector.getBeanInfo(type);
        for (PropertyDescriptor descriptor : info.getPropertyDescriptors()) {
            if (descriptor.getName().equals(propName)) {
                if (descriptor.getReadMethod() != null) {
                    return true;
                } else {
                    return false; // property found but not writable
                }
            }
        }
        //PropertyUtils.getProperty(bean, propName);
        //return true;
    } catch (IntrospectionException ignore) {
    }
    return false;
}

---

From source file:com.ebay.pulsar.analytics.dao.service.BaseDBService.java

public static Map<String, Object> describe(Object obj) {
    if (obj == null) {
        return null;
    }/* ww  w .j a  va2 s.c  o  m*/
    Map<String, Object> map = new HashMap<String, Object>();
    try {
        BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());
        PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
        for (PropertyDescriptor property : propertyDescriptors) {
            String key = property.getName();
            if (!key.equals("class")) {
                try {
                    Method getter = property.getReadMethod();
                    Object value = getter.invoke(obj);
                    if (value != null) {

                        if ("properties".equalsIgnoreCase(key) || "config".equalsIgnoreCase(key)) {
                            value = new SerialBlob(((String) value).getBytes());
                        }
                        map.put(key, value);
                    }
                } catch (Exception e) {
                    logger.error("transBean1Map Error " + e);
                }
            }

        }
    } catch (Exception e) {
        logger.error("transBean2Map Error " + e);
    }
    return map;

}

---

From source file:org.theospi.portfolio.shared.model.impl.GenericXmlRenderer.java

protected void addObjectNodeInfo(Element parentNode, Object object, Element structure, String container,
        String site, String context) throws IntrospectionException {
    if (object == null)
        return;/*from ww w . j a  v a  2  s  .co m*/
    // go through each property... put each one in...
    logger.debug("adding object of class " + object.getClass());

    BeanInfo info = Introspector.getBeanInfo(object.getClass());

    PropertyDescriptor[] props = info.getPropertyDescriptors();

    for (int i = 0; i < props.length; i++) {
        PropertyDescriptor property = props[i];
        logger.debug("examining property: " + property.getName());
        if (isTraversableType(property, structure)) {
            if (isCollection(property, structure)) {
                addCollectionItems(parentNode, property, object, structure, container, site, context);
            } else if (isArtifact(property, structure)) {
                addArtifactItem(parentNode, property, object, container, site, context);
            } else {
                addItem(parentNode, property, object, structure, container, site, context);
            }
        } else {
            addItemToXml(parentNode, property, object);
        }

    }
}

---

From source file:com.hubspot.jinjava.lib.tag.ForTag.java

@SuppressWarnings("unchecked")
@Override//www .  j a  va  2s.co m
public String interpret(TagNode tagNode, JinjavaInterpreter interpreter) {
    List<String> helper = new HelperStringTokenizer(tagNode.getHelpers()).splitComma(true).allTokens();

    List<String> loopVars = Lists.newArrayList();
    int inPos = 0;
    while (inPos < helper.size()) {
        String val = helper.get(inPos);

        if ("in".equals(val)) {
            break;
        } else {
            loopVars.add(val);
            inPos++;
        }
    }

    if (inPos >= helper.size()) {
        throw new TemplateSyntaxException(tagNode.getMaster().getImage(),
                "Tag 'for' expects valid 'in' clause, got: " + tagNode.getHelpers(), tagNode.getLineNumber());
    }

    String loopExpr = StringUtils.join(helper.subList(inPos + 1, helper.size()), ",");
    Object collection = interpreter.resolveELExpression(loopExpr, tagNode.getLineNumber());
    ForLoop loop = ObjectIterator.getLoop(collection);

    try (InterpreterScopeClosable c = interpreter.enterScope()) {
        interpreter.getContext().put(LOOP, loop);

        StringBuilder buff = new StringBuilder();
        while (loop.hasNext()) {
            Object val = loop.next();

            // set item variables
            if (loopVars.size() == 1) {
                interpreter.getContext().put(loopVars.get(0), val);
            } else {
                for (String loopVar : loopVars) {
                    if (Map.Entry.class.isAssignableFrom(val.getClass())) {
                        Map.Entry<String, Object> entry = (Entry<String, Object>) val;
                        Object entryVal = null;

                        if ("key".equals(loopVar)) {
                            entryVal = entry.getKey();
                        } else if ("value".equals(loopVar)) {
                            entryVal = entry.getValue();
                        }

                        interpreter.getContext().put(loopVar, entryVal);
                    } else {
                        try {
                            PropertyDescriptor[] valProps = Introspector.getBeanInfo(val.getClass())
                                    .getPropertyDescriptors();
                            for (PropertyDescriptor valProp : valProps) {
                                if (loopVar.equals(valProp.getName())) {
                                    interpreter.getContext().put(loopVar, valProp.getReadMethod().invoke(val));
                                    break;
                                }
                            }
                        } catch (Exception e) {
                            throw new InterpretException(e.getMessage(), e, tagNode.getLineNumber());
                        }
                    }
                }
            }

            for (Node node : tagNode.getChildren()) {
                buff.append(node.render(interpreter));
            }
        }

        return buff.toString();
    }

}

---

From source file:ch.ifocusit.plantuml.utils.ClassUtils.java

public static boolean isSetter(Method method) {
    try {/*w w w . j  a  v a  2 s.c om*/
        return Stream.of(Introspector.getBeanInfo(method.getDeclaringClass()).getPropertyDescriptors())
                .map(desc -> desc.getWriteMethod()).filter(Objects::nonNull)
                .anyMatch(setter -> setter.equals(method));
    } catch (IntrospectionException e) {
        throw new IllegalStateException(e);
    }
}

---

From source file:no.sesat.search.datamodel.DataModelFactoryImplTest.java

/**
 *
 * @throws java.lang.Exception//from ww w.ja va 2  s . c  om
 */
@Test
public void testDataObjectGetters() throws Exception {

    LOG.info("testDataObjectGetters()");
    scan(DataObject.class, DataModel.class, new Command() {
        public void execute(Object... args) {

            try {
                final Class<?> cls = (Class<?>) args[0];
                final Object dataObject = testInstantiate(cls);

                final PropertyDescriptor[] properties = Introspector.getBeanInfo(cls).getPropertyDescriptors();
                for (PropertyDescriptor property : properties) {
                    if (null != property.getReadMethod()) {
                        final Object value = invoke(property.getReadMethod(), dataObject, new Object[0]);
                        LOG.info("        Getter on " + property.getName() + " returned " + value);
                    }
                    if (property instanceof MappedPropertyDescriptor) {
                        final MappedPropertyDescriptor mappedProperty = (MappedPropertyDescriptor) property;
                        if (null != mappedProperty.getReadMethod()) {
                            final Object value = invoke(mappedProperty.getMappedReadMethod(), dataObject, "");
                            LOG.info("        Getter on " + mappedProperty.getName() + " returned " + value);
                        }
                    }
                }
            } catch (IntrospectionException ie) {
                LOG.info(ie.getMessage(), ie);
                throw new RuntimeException(ie.getMessage(), ie);
            }
        }
    });
}

---

From source file:de.micromata.genome.db.jpa.logging.BaseJpaLoggingImpl.java

/**
 * Inits the.//from   ww w . j  a  va2  s . com
 */
protected void initProps() {
    final BeanInfo bi;
    try {
        bi = Introspector.getBeanInfo(getMasterClass());
    } catch (IntrospectionException e) {
        log.error("unable to introspect hibernate DO for logging -> no searchable fields will be available", e);
        return;
    }

    for (PropertyDescriptor pd : bi.getPropertyDescriptors()) {
        if (pd.getReadMethod() == null || pd.getWriteMethod() == null) {
            continue;
        }
        EntityLogSearchAttribute ent = pd.getReadMethod().getAnnotation(EntityLogSearchAttribute.class);
        if (ent == null) {
            continue;
        }
        Column col = pd.getReadMethod().getAnnotation(Column.class);
        if (col == null) {
            log.warn("Found EntityLogSearchAttribute but no Column: " + pd);
            continue;
        }
        for (String en : ent.enumName()) {
            searchableAttributeProperties.put(en, new SearchColumnDesc(pd, col.length()));
        }
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• »