org.jdal.beans.PropertyUtils.java Source code

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Here is the source code for org.jdal.beans.PropertyUtils.java

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/*
 * Copyright 2008-2010 the original author or authors.
 *
 * 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.jdal.beans;

import java.beans.PropertyDescriptor;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;
import org.jdal.util.BeanUtils;

/**
 * Utility class for dealing with bean properties.
 * 
 * @author Jose Luis Martin
 */
public abstract class PropertyUtils {

    public static String PROPERTY_SEPARATOR = ".";

    public static String getPropertyName(String propertyPath) {
        if (propertyPath.contains(PROPERTY_SEPARATOR))
            return StringUtils.substringAfterLast(propertyPath, PROPERTY_SEPARATOR);

        return propertyPath;
    }

    public static String getPath(String propertyPath) {
        return StringUtils.substringBeforeLast(propertyPath, PROPERTY_SEPARATOR);
    }

    public static boolean isNested(String propertyPath) {
        return propertyPath.contains(PROPERTY_SEPARATOR);
    }

    public static String getFirstPropertyName(String propertyPath) {
        return isNested(propertyPath) ? StringUtils.substringBefore(propertyPath, PROPERTY_SEPARATOR)
                : propertyPath;
    }

    public static String getNestedPath(String propertyPath) {
        return StringUtils.substringAfter(propertyPath, PROPERTY_SEPARATOR);
    }

    public static String toHumanReadable(String propertyName) {
        String humanReadable = getPropertyName(propertyName).replaceAll("([A-Z])", " $1").trim();
        return WordUtils.capitalize(humanReadable);
    }

    public static PropertyDescriptor getPropertyDescriptor(Class<?> clazz, String propertyPath) {
        PropertyDescriptor pd = BeanUtils.getPropertyDescriptor(clazz,
                getFirstPropertyName(getFirstPropertyName(propertyPath)));

        if (isNested(propertyPath)) // recurse
            return getPropertyDescriptor(pd.getPropertyType(), getNestedPath(propertyPath));

        return pd;
    }
}