Example usage for java.beans Introspector getBeanInfo

List of usage examples for java.beans Introspector getBeanInfo

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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:org.apache.jcs.config.PropertySetter.java

/**
 * Uses JavaBeans {@link Introspector}to computer setters of object to be
 * configured./* ww w .j  a va  2s .  c o m*/
 */
protected void introspect() {
    try {
        BeanInfo bi = Introspector.getBeanInfo(obj.getClass());
        props = bi.getPropertyDescriptors();
    } catch (IntrospectionException ex) {
        log.error("Failed to introspect " + obj + ": " + ex.getMessage());
        props = new PropertyDescriptor[0];
    }
}

From source file:eu.qualityontime.commons.DefaultBeanIntrospector.java

/**
 * Performs introspection of a specific Java class. This implementation uses
 * the {@code java.beans.Introspector.getBeanInfo()} method to obtain all
 * property descriptors for the current class and adds them to the passed in
 * introspection context./* www.jav a2 s  .  co m*/
 *
 * @param icontext
 *            the introspection context
 */
@Override
public void introspect(final IntrospectionContext icontext) {
    BeanInfo beanInfo = null;
    try {
        beanInfo = Introspector.getBeanInfo(icontext.getTargetClass());
    } catch (final IntrospectionException e) {
        // no descriptors are added to the context
        log.error("Error when inspecting class " + icontext.getTargetClass(), e);
        return;
    }

    PropertyDescriptor[] descriptors = beanInfo.getPropertyDescriptors();
    if (descriptors == null) {
        descriptors = new PropertyDescriptor[0];
    }

    handleIndexedPropertyDescriptors(icontext.getTargetClass(), descriptors);
    icontext.addPropertyDescriptors(descriptors);
}

From source file:org.lambdamatic.internal.elasticsearch.codec.DocumentCodec.java

/**
 * Constructor.//from  w w  w. j a v a  2 s. c  o m
 * 
 * @param domainType The domain type to encode/decode. Must be annotated with {@link Document} or
 *        {@link EmbeddedDocument}
 * @param objectMapper the {@link ObjectMapper} to encode/decode documents
 * @throws DomainTypeException if an exception occurs during introspection of the given domain
 *         type.
 */
public DocumentCodec(final Class<T> domainType, final ObjectMapper objectMapper) throws DomainTypeException {
    this.domainType = domainType;
    this.objectMapper = objectMapper;
    try {
        this.domainTypeBeanInfo = Introspector.getBeanInfo(domainType);
    } catch (IntrospectionException e) {
        throw new DomainTypeException("Failed to analyse domain type '" + domainType.getName() + "'", e);
    }
}

From source file:com.searchbox.core.search.AbstractSearchCondition.java

@Override
public boolean equals(Object other) {
    if (!this.getClass().equals(other.getClass())) {
        return false;
    } else {/*w  ww  .ja  v  a  2  s . co m*/
        try {
            for (PropertyDescriptor propertyDescriptor : Introspector.getBeanInfo(this.getClass())
                    .getPropertyDescriptors()) {

                Method method = propertyDescriptor.getReadMethod();
                Object res1 = method.invoke(this);
                Object res2 = method.invoke(other);

                if ((res1 == null && res2 != null) || (res1 != null && res2 == null)) {
                    return false;
                }
                if (res1 != null && res2 != null && !res1.equals(res2)) {
                    return false;
                }
            }
        } catch (Exception e) {
            LOGGER.error("Could not compare Objects", e);
            return false;
        }
    }
    return true;
}

From source file:org.apache.syncope.core.misc.jexl.JexlUtils.java

public static JexlContext addFieldsToContext(final Object object, final JexlContext jexlContext) {
    JexlContext context = jexlContext == null ? new MapContext() : jexlContext;

    try {/*  www . j  a  v  a2  s  .  c om*/
        for (PropertyDescriptor desc : Introspector.getBeanInfo(object.getClass()).getPropertyDescriptors()) {
            Class<?> type = desc.getPropertyType();
            String fieldName = desc.getName();

            if ((!fieldName.startsWith("pc")) && (!ArrayUtils.contains(IGNORE_FIELDS, fieldName))
                    && (!Iterable.class.isAssignableFrom(type)) && (!type.isArray())) {

                try {
                    Object fieldValue;
                    if (desc.getReadMethod() == null) {
                        final Field field = object.getClass().getDeclaredField(fieldName);
                        field.setAccessible(true);
                        fieldValue = field.get(object);
                    } else {
                        fieldValue = desc.getReadMethod().invoke(object);
                    }

                    context.set(fieldName,
                            fieldValue == null ? StringUtils.EMPTY
                                    : (type.equals(Date.class) ? DataFormat.format((Date) fieldValue, false)
                                            : fieldValue));

                    LOG.debug("Add field {} with value {}", fieldName, fieldValue);
                } catch (Exception iae) {
                    LOG.error("Reading '{}' value error", fieldName, iae);
                }
            }
        }
    } catch (IntrospectionException ie) {
        LOG.error("Reading class attributes error", ie);
    }

    if (object instanceof Any) {
        Any<?, ?, ?> any = (Any<?, ?, ?>) object;
        if (any.getRealm() != null) {
            context.set("realm", any.getRealm().getName());
        }
    }

    return context;
}

From source file:org.lnicholls.galleon.gui.HMEConfigurationPanel.java

public HMEConfigurationPanel(Object bean) {

    setLayout(new GridLayout(0, 1));

    target = bean;/*from ww w  .ja  v  a2s . c  om*/

    try {

        BeanInfo bi = Introspector.getBeanInfo(target.getClass());

        properties = bi.getPropertyDescriptors();

    } catch (IntrospectionException ex) {

        Tools.logException(HMEConfigurationPanel.class, ex, "PropertySheet: Couldn't introspect");

        return;

    }

    editors = new PropertyEditor[properties.length];

    values = new Object[properties.length];

    views = new Component[properties.length];

    labels = new JLabel[properties.length];

    for (int i = 0; i < properties.length; i++) {

        // Don't display hidden or expert properties.

        if (properties[i].isHidden() || properties[i].isExpert()) {

            continue;

        }

        String name = properties[i].getDisplayName();

        Class type = properties[i].getPropertyType();

        Method getter = properties[i].getReadMethod();

        Method setter = properties[i].getWriteMethod();

        // Only display read/write properties.

        if (getter == null || setter == null) {

            continue;

        }

        Component view = null;

        try {

            Object args[] = {};

            Object value = getter.invoke(target, args);

            values[i] = value;

            PropertyEditor editor = null;

            Class pec = properties[i].getPropertyEditorClass();

            if (pec != null) {

                try {

                    editor = (PropertyEditor) pec.newInstance();

                } catch (Exception ex) {

                    // Drop through.

                }

            }

            if (editor == null) {

                editor = PropertyEditorManager.findEditor(type);

            }

            editors[i] = editor;

            // If we can't edit this component, skip it.

            if (editor == null) {

                // If it's a user-defined property we give a warning.

                String getterClass = properties[i].getReadMethod().getDeclaringClass().getName();

                if (getterClass.indexOf("java.") != 0) {

                    log.error("Warning: Can't find public property editor for property \"" + name

                            + "\".  Skipping.");

                }

                continue;

            }

            // Don't try to set null values:

            if (value == null) {

                // If it's a user-defined property we give a warning.

                String getterClass = properties[i].getReadMethod().getDeclaringClass().getName();

                if (getterClass.indexOf("java.") != 0) {

                    log.error("Warning: Property \"" + name + "\" has null initial value.  Skipping.");

                }

                continue;

            }

            editor.setValue(value);

            // editor.addPropertyChangeListener(adaptor);

            // Now figure out how to display it...

            if (editor.isPaintable() && editor.supportsCustomEditor()) {

                view = new PropertyCanvas(frame, editor);

            } else if (editor.getTags() != null) {

                view = new PropertySelector(editor);

            } else if (editor.getAsText() != null) {

                String init = editor.getAsText();

                view = new PropertyText(editor);

            } else {

                log.error("Warning: Property \"" + name + "\" has non-displayabale editor.  Skipping.");

                continue;

            }

        } catch (InvocationTargetException ex) {

            Tools.logException(HMEConfigurationPanel.class, ex.getTargetException(),
                    "Skipping property " + name);

            continue;

        } catch (Exception ex) {

            Tools.logException(HMEConfigurationPanel.class, ex, "Skipping property " + name);

            continue;

        }

        labels[i] = new JLabel(WordUtils.capitalize(name), JLabel.RIGHT);

        // add(labels[i]);

        views[i] = view;

        // add(views[i]);

    }

    int validCounter = 0;

    for (int i = 0; i < labels.length; i++) {

        if (labels[i] != null)

            validCounter++;

    }

    String rowStrings = ""; // general

    if (validCounter > 0)

        rowStrings = "pref, ";

    else

        rowStrings = "pref";

    int counter = 0;

    for (int i = 0; i < labels.length; i++) {

        if (labels[i] != null) {

            if (++counter == (validCounter))

                rowStrings = rowStrings + "9dlu, " + "pref";

            else

                rowStrings = rowStrings + "9dlu, " + "pref, ";

        }

    }

    FormLayout layout = new FormLayout("right:pref, 3dlu, 50dlu:g, right:pref:grow", rowStrings);

    PanelBuilder builder = new PanelBuilder(layout);

    //DefaultFormBuilder builder = new DefaultFormBuilder(new FormDebugPanel(), layout);

    builder.setDefaultDialogBorder();

    CellConstraints cc = new CellConstraints();

    builder.addSeparator("General", cc.xyw(1, 1, 4));

    counter = 0;

    for (int i = 0; i < labels.length; i++) {

        if (labels[i] != null) {

            counter++;

            builder.add(labels[i], cc.xy(1, counter * 2 + 1));

            builder.add(views[i], cc.xy(3, counter * 2 + 1));

        }

    }

    JPanel panel = builder.getPanel();

    //FormDebugUtils.dumpAll(panel);

    add(panel);

}

From source file:kelly.util.BeanUtils.java

/**
 * Retrieve the JavaBeans {@code PropertyDescriptor}s of a given class.
 * @param clazz the Class to retrieve the PropertyDescriptors for
 * @return an array of {@code PropertyDescriptors} for the given class
 *///from w  w  w  . j a  v  a2  s. co  m
public static PropertyDescriptor[] getPropertyDescriptors(Class<?> clazz) {
    Validate.notNull(clazz, "Class must not be null");
    try {
        BeanInfo beanInfo = Introspector.getBeanInfo(clazz);
        return beanInfo.getPropertyDescriptors();
    } catch (IntrospectionException e) {
        throw new BeanException(e.getMessage(), e);
    }
}

From source file:org.apache.syncope.core.util.jexl.JexlUtil.java

public static JexlContext addFieldsToContext(final Object attributable, final JexlContext jexlContext) {
    JexlContext context = jexlContext == null ? new MapContext() : jexlContext;

    try {/*from  ww  w .  j av  a 2s .c om*/
        for (PropertyDescriptor desc : Introspector.getBeanInfo(attributable.getClass())
                .getPropertyDescriptors()) {
            final Class<?> type = desc.getPropertyType();
            final String fieldName = desc.getName();

            if ((!fieldName.startsWith("pc")) && (!ArrayUtils.contains(IGNORE_FIELDS, fieldName))
                    && (!Iterable.class.isAssignableFrom(type)) && (!type.isArray())) {
                try {
                    final Method getter = desc.getReadMethod();

                    final Object fieldValue;

                    if (getter == null) {
                        final Field field = attributable.getClass().getDeclaredField(fieldName);
                        field.setAccessible(true);
                        fieldValue = field.get(attributable);
                    } else {
                        fieldValue = getter.invoke(attributable);
                    }

                    context.set(fieldName,
                            fieldValue == null ? ""
                                    : (type.equals(Date.class) ? DataFormat.format((Date) fieldValue, false)
                                            : fieldValue));

                    LOG.debug("Add field {} with value {}", fieldName, fieldValue);

                } catch (Exception iae) {
                    LOG.error("Reading '{}' value error", fieldName, iae);
                }
            }
        }
    } catch (IntrospectionException ie) {
        LOG.error("Reading class attributes error", ie);
    }

    return context;
}

From source file:cn.fql.utility.ClassUtility.java

/**
 * Export property desc of specified class
 *
 * @param beanClass specified class/*  w ww.j a v  a2 s . c om*/
 * @return @see java.beans.BeanInfo#getPropertyDescriptors
 * @throws java.beans.IntrospectionException
 *          if there is exception occurs
 */
public static PropertyDescriptor[] exportPropertyDesc(Class beanClass) throws IntrospectionException {
    BeanInfo bi;
    PropertyDescriptor[] pds;
    bi = Introspector.getBeanInfo(beanClass);
    pds = bi.getPropertyDescriptors();
    return pds;
}

From source file:org.apache.syncope.core.misc.jexl.JexlUtil.java

public static JexlContext addFieldsToContext(final Object object, final JexlContext jexlContext) {
    JexlContext context = jexlContext == null ? new MapContext() : jexlContext;

    try {//  w w w. j a  va2  s  . c  om
        for (PropertyDescriptor desc : Introspector.getBeanInfo(object.getClass()).getPropertyDescriptors()) {
            final Class<?> type = desc.getPropertyType();
            final String fieldName = desc.getName();

            if ((!fieldName.startsWith("pc")) && (!ArrayUtils.contains(IGNORE_FIELDS, fieldName))
                    && (!Iterable.class.isAssignableFrom(type)) && (!type.isArray())) {
                try {
                    final Method getter = desc.getReadMethod();

                    final Object fieldValue;

                    if (getter == null) {
                        final Field field = object.getClass().getDeclaredField(fieldName);
                        field.setAccessible(true);
                        fieldValue = field.get(object);
                    } else {
                        fieldValue = getter.invoke(object);
                    }

                    context.set(fieldName,
                            fieldValue == null ? StringUtils.EMPTY
                                    : (type.equals(Date.class) ? DataFormat.format((Date) fieldValue, false)
                                            : fieldValue));

                    LOG.debug("Add field {} with value {}", fieldName, fieldValue);

                } catch (Exception iae) {
                    LOG.error("Reading '{}' value error", fieldName, iae);
                }
            }
        }
    } catch (IntrospectionException ie) {
        LOG.error("Reading class attributes error", ie);
    }

    return context;
}