org.gameye.psp.image.utils.TBeanUtilsBean.java Source code

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/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gameye.psp.image.utils;

import java.beans.IndexedPropertyDescriptor;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Array;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.beanutils.BeanUtilsBean;
import org.apache.commons.beanutils.ContextClassLoaderLocal;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.beanutils.ConvertUtilsBean;
import org.apache.commons.beanutils.Converter;
import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaClass;
import org.apache.commons.beanutils.DynaProperty;
import org.apache.commons.beanutils.MappedPropertyDescriptor;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.beanutils.PropertyUtilsBean;
import org.apache.commons.beanutils.converters.SqlTimestampConverter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.feipy.framework.web.servlet.SqlDateConverter;

/**
 * <p>JavaBean property population methods.</p>
 *
 * <p>This class provides implementations for the utility methods in
 * {@link TBeanUtils}.
 * Different instances can be used to isolate caches between classloaders
 * and to vary the value converters registered.</p>
 *
 * @author Craig R. McClanahan
 * @author Ralph Schaer
 * @author Chris Audley
 * @author Rey Franois
 * @author Gregor Raman
 * @version $Revision: 1.16 $ $Date: 2004/02/28 13:18:33 $
 * @see TBeanUtils
 * @since 1.7
 */

public class TBeanUtilsBean extends BeanUtilsBean {
    // ------------------------------------------------------ Private Class Variables

    /** 
     * Contains <code>BeanUtilsBean</code> instances indexed by context classloader.
     */
    private static final ContextClassLoaderLocal beansByClassLoader = new ContextClassLoaderLocal() {
        // Creates the default instance used when the context classloader is unavailable
        protected Object initialValue() {
            return new TBeanUtilsBean();
        }
    };

    /** 
     * Sets the instance which provides the functionality for {@link TBeanUtils}.
     * This is a pseudo-singleton - an single instance is provided per (thread) context classloader.
     * This mechanism provides isolation for web apps deployed in the same container. 
     */
    public synchronized static void setInstance(TBeanUtilsBean newInstance) {
        beansByClassLoader.set(newInstance);
    }

    // --------------------------------------------------------- Attributes

    /**
     * Logging for this instance
     */
    private Log log = LogFactory.getLog(TBeanUtils.class);

    /** Used to perform conversions between object types when setting properties */
    private ConvertUtilsBean convertUtilsBean;

    /** Used to access properties*/
    private TPropertyUtilsBean propertyUtilsBean;

    // --------------------------------------------------------- Constuctors

    /** 
     * <p>Constructs an instance using new property 
     * and conversion instances.</p>
     */
    public TBeanUtilsBean() {
        this(new ConvertUtilsBean(), new TPropertyUtilsBean());
    }

    /** 
     * <p>Constructs an instance using given property and conversion instances.</p>
     *
     * @param convertUtilsBean use this <code>ConvertUtilsBean</code> 
     * to perform conversions from one object to another
     * @param propertyUtilsBean use this <code>PropertyUtilsBean</code>
     * to access properties
     */
    public TBeanUtilsBean(ConvertUtilsBean convertUtilsBean, TPropertyUtilsBean propertyUtilsBean) {

        this.convertUtilsBean = convertUtilsBean;
        this.propertyUtilsBean = propertyUtilsBean;
    }

    // --------------------------------------------------------- Public Methods

    /** 
     * Gets the instance which provides the functionality for {@link BeanUtils}.
     * This is a pseudo-singleton - an single instance is provided per (thread) context classloader.
     * This mechanism provides isolation for web apps deployed in the same container. 
     */
    public synchronized static BeanUtilsBean getInstance() {
        return (TBeanUtilsBean) beansByClassLoader.get();
    }

    public void copyProperties(Object dest, Object orig) throws IllegalAccessException, InvocationTargetException {

        // Validate existence of the specified beans
        if (dest == null) {
            throw new IllegalArgumentException("No destination bean specified");
        }
        if (orig == null) {
            throw new IllegalArgumentException("No origin bean specified");
        }
        if (log.isDebugEnabled()) {
            log.debug("BeanUtils.copyProperties(" + dest + ", " + orig + ")");
        }

        // Copy the properties, converting as necessary
        if (orig instanceof DynaBean) {
            DynaProperty origDescriptors[] = ((DynaBean) orig).getDynaClass().getDynaProperties();
            for (int i = 0; i < origDescriptors.length; i++) {
                String name = origDescriptors[i].getName();
                if (getPropertyUtils().isWriteable(dest, name)) {
                    Object value = ((DynaBean) orig).get(name);
                    copyProperty(dest, name, value);
                }
            }
        } else if (orig instanceof Map) {
            Iterator names = ((Map) orig).keySet().iterator();
            while (names.hasNext()) {
                String name = (String) names.next();
                if (getPropertyUtils().isWriteable(dest, name)) {
                    Object value = ((Map) orig).get(name);
                    copyProperty(dest, name, value);
                }
            }
        } else /* if (orig is a standard JavaBean) */ {
            PropertyDescriptor origDescriptors[] = getPropertyUtils().getPropertyDescriptors(orig);
            for (int i = 0; i < origDescriptors.length; i++) {
                String name = origDescriptors[i].getName();

                if ("class".equals(name)) {
                    continue; // No point in trying to set an object's class
                }

                Class orgtype = origDescriptors[i].getPropertyType();
                String orgtypeName = orgtype.getName();

                Class desttype = ((TPropertyUtilsBean) getPropertyUtils()).getDestType(dest, name);
                if (desttype == null)
                    continue;
                String desttypeName = desttype.getName();

                //end 
                if (orgtypeName.equals(desttypeName) && getPropertyUtils().isReadable(orig, name)
                        && getPropertyUtils().isWriteable(dest, name)) {
                    try {
                        Object value = getPropertyUtils().getSimpleProperty(orig, name);
                        copyProperty(dest, name, value);
                    } catch (NoSuchMethodException e) {
                        ; // Should not happen
                    }
                }
            }
        }

    }

    public void copyProperty(Object bean, String name, Object value)
            throws IllegalAccessException, InvocationTargetException {

        // Trace logging (if enabled)
        if (log.isTraceEnabled()) {
            StringBuffer sb = new StringBuffer("  copyProperty(");
            sb.append(bean);
            sb.append(", ");
            sb.append(name);
            sb.append(", ");
            if (value == null) {
                sb.append("<NULL>");
            } else if (value instanceof String) {
                sb.append((String) value);
            } else if (value instanceof String[]) {
                String values[] = (String[]) value;
                sb.append('[');
                for (int i = 0; i < values.length; i++) {
                    if (i > 0) {
                        sb.append(',');
                    }
                    sb.append(values[i]);
                }
                sb.append(']');
            } else {
                sb.append(value.toString());
            }
            sb.append(')');
            log.trace(sb.toString());
        }

        // Resolve any nested expression to get the actual target bean
        Object target = bean;
        int delim = name.lastIndexOf(PropertyUtils.NESTED_DELIM);
        if (delim >= 0) {
            try {
                target = getPropertyUtils().getProperty(bean, name.substring(0, delim));
            } catch (NoSuchMethodException e) {
                return; // Skip this property setter
            }
            name = name.substring(delim + 1);
            if (log.isTraceEnabled()) {
                log.trace("    Target bean = " + target);
                log.trace("    Target name = " + name);
            }
        }

        // Declare local variables we will require
        String propName = null; // Simple name of target property
        Class type = null; // Java type of target property
        int index = -1; // Indexed subscript value (if any)
        String key = null; // Mapped key value (if any)

        // Calculate the target property name, index, and key values
        propName = name;
        int i = propName.indexOf(PropertyUtils.INDEXED_DELIM);
        if (i >= 0) {
            int k = propName.indexOf(PropertyUtils.INDEXED_DELIM2);
            try {
                index = Integer.parseInt(propName.substring(i + 1, k));
            } catch (NumberFormatException e) {
                ;
            }
            propName = propName.substring(0, i);
        }
        int j = propName.indexOf(PropertyUtils.MAPPED_DELIM);
        if (j >= 0) {
            int k = propName.indexOf(PropertyUtils.MAPPED_DELIM2);
            try {
                key = propName.substring(j + 1, k);
            } catch (IndexOutOfBoundsException e) {
                ;
            }
            propName = propName.substring(0, j);
        }

        // Calculate the target property type
        if (target instanceof DynaBean) {
            DynaClass dynaClass = ((DynaBean) target).getDynaClass();
            DynaProperty dynaProperty = dynaClass.getDynaProperty(propName);
            if (dynaProperty == null) {
                return; // Skip this property setter
            }
            type = dynaProperty.getType();
        } else {
            PropertyDescriptor descriptor = null;
            try {
                descriptor = getPropertyUtils().getPropertyDescriptor(target, name);
                if (descriptor == null) {
                    return; // Skip this property setter
                }
            } catch (NoSuchMethodException e) {
                return; // Skip this property setter
            }
            type = descriptor.getPropertyType();
            if (type == null) {
                // Most likely an indexed setter on a POJB only
                if (log.isTraceEnabled()) {
                    log.trace("    target type for property '" + propName + "' is null, so skipping ths setter");
                }
                return;
            }
        }
        if (log.isTraceEnabled()) {
            log.trace("    target propName=" + propName + ", type=" + type + ", index=" + index + ", key=" + key);
        }

        // Convert the specified value to the required type and store it
        if (index >= 0) { // Destination must be indexed
            Converter converter = getConvertUtils().lookup(type.getComponentType());
            if (converter != null) {
                log.trace("        USING CONVERTER " + converter);
                value = converter.convert(type, value);
            }
            try {
                getPropertyUtils().setIndexedProperty(target, propName, index, value);
            } catch (NoSuchMethodException e) {
                throw new InvocationTargetException(e, "Cannot set " + propName);
            }
        } else if (key != null) { // Destination must be mapped
            // Maps do not know what the preferred data type is,
            // so perform no conversions at all
            // FIXME - should we create or support a TypedMap?
            try {
                getPropertyUtils().setMappedProperty(target, propName, key, value);
            } catch (NoSuchMethodException e) {
                throw new InvocationTargetException(e, "Cannot set " + propName);
            }
        } else { // Destination must be simple
            Converter converter = getConvertUtils().lookup(type);
            if (converter != null) {
                log.trace("        USING CONVERTER " + converter);
                value = converter.convert(type, value);
            }
            try {
                getPropertyUtils().setSimpleProperty(target, propName, value);
            } catch (NoSuchMethodException e) {
                throw new InvocationTargetException(e, "Cannot set " + propName);
            }
        }

    }

    /**
     * <p>Return the entire set of properties for which the specified bean
     * provides a read method. This map contains the to <code>String</code>
     * converted property values for all properties for which a read method
     * is provided (i.e. where the getReadMethod() returns non-null).</p>
     *
     * <p>This map can be fed back to a call to
     * <code>BeanUtils.populate()</code> to reconsitute the same set of
     * properties, modulo differences for read-only and write-only
     * properties, but only if there are no indexed properties.</p>
     *
     * @param bean Bean whose properties are to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public Map describe(Object bean)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        if (bean == null) {
            //            return (Collections.EMPTY_MAP);
            return (new java.util.HashMap());
        }

        if (log.isDebugEnabled()) {
            log.debug("Describing bean: " + bean.getClass().getName());
        }

        Map description = new HashMap();
        if (bean instanceof DynaBean) {
            DynaProperty descriptors[] = ((DynaBean) bean).getDynaClass().getDynaProperties();
            for (int i = 0; i < descriptors.length; i++) {
                String name = descriptors[i].getName();
                description.put(name, getProperty(bean, name));
            }
        } else {
            PropertyDescriptor descriptors[] = getPropertyUtils().getPropertyDescriptors(bean);
            for (int i = 0; i < descriptors.length; i++) {
                String name = descriptors[i].getName();
                if (descriptors[i].getReadMethod() != null)
                    description.put(name, getProperty(bean, name));
            }
        }
        return (description);

    }

    /**
     * Return the value of the specified array property of the specified
     * bean, as a String array.
     *
     * @param bean Bean whose property is to be extracted
     * @param name Name of the property to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String[] getArrayProperty(Object bean, String name)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getProperty(bean, name);
        if (value == null) {
            return (null);
        } else if (value instanceof Collection) {
            ArrayList values = new ArrayList();
            Iterator items = ((Collection) value).iterator();
            while (items.hasNext()) {
                Object item = items.next();
                if (item == null) {
                    values.add((String) null);
                } else {
                    // convert to string using convert utils
                    values.add(getConvertUtils().convert(item));
                }
            }
            return ((String[]) values.toArray(new String[values.size()]));
        } else if (value.getClass().isArray()) {
            int n = Array.getLength(value);
            String results[] = new String[n];
            for (int i = 0; i < n; i++) {
                Object item = Array.get(value, i);
                if (item == null) {
                    results[i] = null;
                } else {
                    // convert to string using convert utils
                    results[i] = getConvertUtils().convert(item);
                }
            }
            return (results);
        } else {
            String results[] = new String[1];
            results[0] = value.toString();
            return (results);
        }

    }

    /**
     * Return the value of the specified indexed property of the specified
     * bean, as a String.  The zero-relative index of the
     * required value must be included (in square brackets) as a suffix to
     * the property name, or <code>IllegalArgumentException</code> will be
     * thrown.
     *
     * @param bean Bean whose property is to be extracted
     * @param name <code>propertyname[index]</code> of the property value
     *  to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getIndexedProperty(Object bean, String name)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getIndexedProperty(bean, name);
        return (getConvertUtils().convert(value));

    }

    /**
     * Return the value of the specified indexed property of the specified
     * bean, as a String.  The index is specified as a method parameter and
     * must *not* be included in the property name expression
     *
     * @param bean Bean whose property is to be extracted
     * @param name Simple property name of the property value to be extracted
     * @param index Index of the property value to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getIndexedProperty(Object bean, String name, int index)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getIndexedProperty(bean, name, index);
        return (getConvertUtils().convert(value));

    }

    /**
     * Return the value of the specified indexed property of the specified
     * bean, as a String.  The String-valued key of the required value
     * must be included (in parentheses) as a suffix to
     * the property name, or <code>IllegalArgumentException</code> will be
     * thrown.
     *
     * @param bean Bean whose property is to be extracted
     * @param name <code>propertyname(index)</code> of the property value
     *  to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getMappedProperty(Object bean, String name)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getMappedProperty(bean, name);
        return (getConvertUtils().convert(value));

    }

    /**
     * Return the value of the specified mapped property of the specified
     * bean, as a String.  The key is specified as a method parameter and
     * must *not* be included in the property name expression
     *
     * @param bean Bean whose property is to be extracted
     * @param name Simple property name of the property value to be extracted
     * @param key Lookup key of the property value to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getMappedProperty(Object bean, String name, String key)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getMappedProperty(bean, name, key);
        return (getConvertUtils().convert(value));

    }

    /**
     * Return the value of the (possibly nested) property of the specified
     * name, for the specified bean, as a String.
     *
     * @param bean Bean whose property is to be extracted
     * @param name Possibly nested name of the property to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception IllegalArgumentException if a nested reference to a
     *  property returns null
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getNestedProperty(Object bean, String name)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getNestedProperty(bean, name);
        return (getConvertUtils().convert(value));

    }

    /**
     * Return the value of the specified property of the specified bean,
     * no matter which property reference format is used, as a String.
     *
     * @param bean Bean whose property is to be extracted
     * @param name Possibly indexed and/or nested name of the property
     *  to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getProperty(Object bean, String name)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        return (getNestedProperty(bean, name));

    }

    /**
     * Return the value of the specified simple property of the specified
     * bean, converted to a String.
     *
     * @param bean Bean whose property is to be extracted
     * @param name Name of the property to be extracted
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     * @exception NoSuchMethodException if an accessor method for this
     *  property cannot be found
     */
    public String getSimpleProperty(Object bean, String name)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Object value = getPropertyUtils().getSimpleProperty(bean, name);
        return (getConvertUtils().convert(value));

    }

    /**
     * <p>Populate the JavaBeans properties of the specified bean, based on
     * the specified name/value pairs.  This method uses Java reflection APIs
     * to identify corresponding "property setter" method names, and deals
     * with setter arguments of type <code>String</code>, <code>boolean</code>,
     * <code>int</code>, <code>long</code>, <code>float</code>, and
     * <code>double</code>.  In addition, array setters for these types (or the
     * corresponding primitive types) can also be identified.</p>
     * 
     * <p>The particular setter method to be called for each property is
     * determined using the usual JavaBeans introspection mechanisms.  Thus,
     * you may identify custom setter methods using a BeanInfo class that is
     * associated with the class of the bean itself.  If no such BeanInfo
     * class is available, the standard method name conversion ("set" plus
     * the capitalized name of the property in question) is used.</p>
     * 
     * <p><strong>NOTE</strong>:  It is contrary to the JavaBeans Specification
     * to have more than one setter method (with different argument
     * signatures) for the same property.</p>
     *
     * <p><strong>WARNING</strong> - The logic of this method is customized
     * for extracting String-based request parameters from an HTTP request.
     * It is probably not what you want for general property copying with
     * type conversion.  For that purpose, check out the
     * <code>copyProperties()</code> method instead.</p>
     *
     * @param bean JavaBean whose properties are being populated
     * @param properties Map keyed by property name, with the
     *  corresponding (String or String[]) value(s) to be set
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     */
    public void populate(Object bean, Map properties) throws IllegalAccessException, InvocationTargetException {

        // Do nothing unless both arguments have been specified
        if ((bean == null) || (properties == null)) {
            return;
        }
        if (log.isDebugEnabled()) {
            log.debug("BeanUtils.populate(" + bean + ", " + properties + ")");
        }

        // Loop through the property name/value pairs to be set
        Iterator names = properties.keySet().iterator();
        while (names.hasNext()) {

            // Identify the property name and value(s) to be assigned
            String name = (String) names.next();
            if (name == null) {
                continue;
            }
            Object value = properties.get(name);

            // Perform the assignment for this property
            setProperty(bean, name, value);

        }

    }

    /**
     * <p>Set the specified property value, performing type conversions as
     * required to conform to the type of the destination property.</p>
     *
     * <p>If the property is read only then the method returns 
     * without throwing an exception.</p>
     *
     * <p>If <code>null</code> is passed into a property expecting a primitive value,
     * then this will be converted as if it were a <code>null</code> string.</p>
     *
     * <p><strong>WARNING</strong> - The logic of this method is customized
     * to meet the needs of <code>populate()</code>, and is probably not what
     * you want for general property copying with type conversion.  For that
     * purpose, check out the <code>copyProperty()</code> method instead.</p>
     *
     * <p><strong>WARNING</strong> - PLEASE do not modify the behavior of this
     * method without consulting with the Struts developer community.  There
     * are some subtleties to its functionality that are not documented in the
     * Javadoc description above, yet are vital to the way that Struts utilizes
     * this method.</p>
     *
     * @param bean Bean on which setting is to be performed
     * @param name Property name (can be nested/indexed/mapped/combo)
     * @param value Value to be set
     *
     * @exception IllegalAccessException if the caller does not have
     *  access to the property accessor method
     * @exception InvocationTargetException if the property accessor method
     *  throws an exception
     */
    public void setProperty(Object bean, String name, Object value)
            throws IllegalAccessException, InvocationTargetException {

        // Trace logging (if enabled)
        if (log.isTraceEnabled()) {
            StringBuffer sb = new StringBuffer("  setProperty(");
            sb.append(bean);
            sb.append(", ");
            sb.append(name);
            sb.append(", ");
            if (value == null) {
                sb.append("<NULL>");
            } else if (value instanceof String) {
                sb.append((String) value);
            } else if (value instanceof String[]) {
                String values[] = (String[]) value;
                sb.append('[');
                for (int i = 0; i < values.length; i++) {
                    if (i > 0) {
                        sb.append(',');
                    }
                    sb.append(values[i]);
                }
                sb.append(']');
            } else {
                sb.append(value.toString());
            }
            sb.append(')');
            log.trace(sb.toString());
        }

        // Resolve any nested expression to get the actual target bean
        Object target = bean;
        int delim = findLastNestedIndex(name);
        if (delim >= 0) {
            try {
                target = getPropertyUtils().getProperty(bean, name.substring(0, delim));
            } catch (NoSuchMethodException e) {
                return; // Skip this property setter
            }
            name = name.substring(delim + 1);
            if (log.isTraceEnabled()) {
                log.trace("    Target bean = " + target);
                log.trace("    Target name = " + name);
            }
        }

        // Declare local variables we will require
        String propName = null; // Simple name of target property
        Class type = null; // Java type of target property
        int index = -1; // Indexed subscript value (if any)
        String key = null; // Mapped key value (if any)

        // Calculate the property name, index, and key values
        propName = name;
        int i = propName.indexOf(PropertyUtils.INDEXED_DELIM);
        if (i >= 0) {
            int k = propName.indexOf(PropertyUtils.INDEXED_DELIM2);
            try {
                index = Integer.parseInt(propName.substring(i + 1, k));
            } catch (NumberFormatException e) {
                ;
            }
            propName = propName.substring(0, i);
        }
        int j = propName.indexOf(PropertyUtils.MAPPED_DELIM);
        if (j >= 0) {
            int k = propName.indexOf(PropertyUtils.MAPPED_DELIM2);
            try {
                key = propName.substring(j + 1, k);
            } catch (IndexOutOfBoundsException e) {
                ;
            }
            propName = propName.substring(0, j);
        }

        // Calculate the property type
        if (target instanceof DynaBean) {
            DynaClass dynaClass = ((DynaBean) target).getDynaClass();
            DynaProperty dynaProperty = dynaClass.getDynaProperty(propName);
            if (dynaProperty == null) {
                return; // Skip this property setter
            }
            type = dynaProperty.getType();
        } else {
            PropertyDescriptor descriptor = null;
            try {
                descriptor = getPropertyUtils().getPropertyDescriptor(target, name);
                if (descriptor == null) {
                    return; // Skip this property setter
                }
            } catch (NoSuchMethodException e) {
                return; // Skip this property setter
            }
            if (descriptor instanceof MappedPropertyDescriptor) {
                if (((MappedPropertyDescriptor) descriptor).getMappedWriteMethod() == null) {
                    if (log.isDebugEnabled()) {
                        log.debug("Skipping read-only property");
                    }
                    return; // Read-only, skip this property setter
                }
                type = ((MappedPropertyDescriptor) descriptor).getMappedPropertyType();
            } else if (descriptor instanceof IndexedPropertyDescriptor) {
                if (((IndexedPropertyDescriptor) descriptor).getIndexedWriteMethod() == null) {
                    if (log.isDebugEnabled()) {
                        log.debug("Skipping read-only property");
                    }
                    return; // Read-only, skip this property setter
                }
                type = ((IndexedPropertyDescriptor) descriptor).getIndexedPropertyType();
            } else {
                if (descriptor.getWriteMethod() == null) {
                    if (log.isDebugEnabled()) {
                        log.debug("Skipping read-only property");
                    }
                    return; // Read-only, skip this property setter
                }
                type = descriptor.getPropertyType();
            }
        }

        // Convert the specified value to the required type
        Object newValue = null;
        if (type.isArray() && (index < 0)) { // Scalar value into array
            if (value == null) {
                String values[] = new String[1];
                values[0] = (String) value;
                newValue = getConvertUtils().convert((String[]) values, type);
            } else if (value instanceof String) {
                String values[] = new String[1];
                values[0] = (String) value;
                newValue = getConvertUtils().convert((String[]) values, type);
            } else if (value instanceof String[]) {
                newValue = getConvertUtils().convert((String[]) value, type);
            } else {
                newValue = value;
            }
        } else if (type.isArray()) { // Indexed value into array
            if (value instanceof String) {
                newValue = getConvertUtils().convert((String) value, type.getComponentType());
            } else if (value instanceof String[]) {
                newValue = getConvertUtils().convert(((String[]) value)[0], type.getComponentType());
            } else {
                newValue = value;
            }
        } else { // Value into scalar
            if ((value instanceof String) || (value == null)) {
                newValue = getConvertUtils().convert((String) value, type);
            } else if (value instanceof String[]) {
                newValue = getConvertUtils().convert(((String[]) value)[0], type);
            } else if (getConvertUtils().lookup(value.getClass()) != null) {
                newValue = getConvertUtils().convert(value.toString(), type);
            } else {
                newValue = value;
            }
        }

        // Invoke the setter method
        try {
            if (index >= 0) {
                getPropertyUtils().setIndexedProperty(target, propName, index, newValue);
            } else if (key != null) {
                getPropertyUtils().setMappedProperty(target, propName, key, newValue);
            } else {
                getPropertyUtils().setProperty(target, propName, newValue);
            }
        } catch (NoSuchMethodException e) {
            throw new InvocationTargetException(e, "Cannot set " + propName);
        }

    }

    private int findLastNestedIndex(String expression) {
        // walk back from the end to the start 
        // and find the first index that 
        int bracketCount = 0;
        for (int i = expression.length() - 1; i >= 0; i--) {
            char at = expression.charAt(i);
            switch (at) {
            case PropertyUtils.NESTED_DELIM:
                if (bracketCount < 1) {
                    return i;
                }
                break;

            case PropertyUtils.MAPPED_DELIM:
            case PropertyUtils.INDEXED_DELIM:
                // not bothered which
                --bracketCount;
                break;

            case PropertyUtils.MAPPED_DELIM2:
            case PropertyUtils.INDEXED_DELIM2:
                // not bothered which
                ++bracketCount;
                break;
            }
        }
        // can't find any
        return -1;
    }

    /** 
     * Gets the <code>ConvertUtilsBean</code> instance used to perform the conversions.
     */
    public ConvertUtilsBean getConvertUtils() {
        return convertUtilsBean;
    }

    /**
     * Gets the <code>PropertyUtilsBean</code> instance used to access properties.
     */
    public PropertyUtilsBean getPropertyUtils() {
        return (TPropertyUtilsBean) propertyUtilsBean;
    }
}