import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Map;

/**
 * Interface for handling properties.
 *
 * @author higa
 */
public interface PropertyDesc {

    /**
     * Returns the property name.
     *
     * @return the property name
     */
    String getPropertyName();

    /**
     * Returns the property type.
     *
     * @param <T>

        }
    }

    /**
     * Adds a {@link PropertyDesc}.
     *
     * @param propertyDesc
     *            {@link PropertyDesc}
     */
    protected void addPropertyDesc(final PropertyDescImpl propertyDesc) {
        assertArgumentNotNull("propertyDesc", propertyDesc);
        propertyDescCache.put(propertyDesc.getPropertyName(), propertyDesc);
    }

    /**
     * Prepares the constructors.

     * @return {@link PropertyDesc}
     */
    PropertyDesc getPropertyDesc(String propertyName);

    /**
     * Returns the {@link PropertyDesc}.
     *
     * @param index
     *            The index of the {@link PropertyDesc}
     * @return {@link PropertyDesc}
     */
    PropertyDesc getPropertyDesc(int index);

    /**
     * Returns the number of {@link PropertyDesc}.
     *

import org.codelibs.core.beans.BeanDesc;
import org.codelibs.core.beans.FieldDesc;
import org.codelibs.core.beans.MethodDesc;
import org.codelibs.core.beans.ParameterizedClassDesc;
import org.codelibs.core.beans.PropertyDesc;
import org.codelibs.core.beans.factory.BeanDescFactory;
import org.codelibs.core.exception.MethodNotFoundRuntimeException;
import org.junit.Test;

/**
 * @author higa
 * @author manhole
 */

        final PropertyDesc propDesc = beanDesc.getPropertyDesc("url");
        propDesc.setValue(myBean, new Object());
    }

    /**
     * @throws Exception
     */
    @Test(expected = IllegalPropertyRuntimeException.class)
    public void testGetValue_notReable() throws Exception {
        final MyBean myBean = new MyBean();
        final BeanDesc beanDesc = new BeanDescImpl(MyBean.class);

import java.util.Map;
import java.util.Map.Entry;
import java.util.function.Consumer;

import org.codelibs.core.beans.BeanDesc;
import org.codelibs.core.beans.PropertyDesc;
import org.codelibs.core.beans.factory.BeanDescFactory;
import org.codelibs.core.lang.ClassUtil;

/**
 * Utility for copying properties between JavaBeans or between JavaBeans and {@link Map}.
 * <p>

import org.codelibs.core.lang.FieldUtil;
import org.codelibs.core.lang.MethodUtil;
import org.codelibs.core.lang.ModifierUtil;

/**
 * Implementation class of {@link PropertyDesc}.
 *
 * @author higa
 */
public class PropertyDescImpl implements PropertyDesc {

    private static final Object[] EMPTY_ARGS = new Object[0];

    private final String propertyName;

    private final Class<?> propertyType;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.beans.util.CopyOptions;

// Bean metadata introspection
BeanDesc beanDesc = BeanDescFactory.getBeanDesc(MyBean.class);
PropertyDesc nameProperty = beanDesc.getPropertyDesc("name");
nameProperty.setValue(bean, "John Doe");

// Bean copying with flexible options
BeanUtil.copyBeanToBean(source, destination);