org.sakaiproject.metaobj.shared.model.ElementListBeanWrapper.java Source code

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Here is the source code for org.sakaiproject.metaobj.shared.model.ElementListBeanWrapper.java

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/*******************************************************************************
 * $URL$
 * $Id$
 * **********************************************************************************
 *
 * Copyright (c) 2004, 2005, 2006, 2007, 2008 The Sakai Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ECL-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.sakaiproject.metaobj.shared.model;

import org.sakaiproject.metaobj.utils.mvc.intf.FieldValueWrapper;
import org.sakaiproject.metaobj.utils.TypedMap;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;

import java.util.*;
import java.beans.PropertyDescriptor;
import java.beans.IntrospectionException;

/**
 * Created by IntelliJ IDEA.
 * User: johnellis
 * Date: Jan 15, 2007
 * Time: 10:46:04 AM
 * To change this template use File | Settings | File Templates.
 */
public class ElementListBeanWrapper extends HashMap implements TypedMap {

    private ElementListBean list;
    private FieldValueWrapper wrapper;
    private List wrapperList;
    private HashMap<Object, PropertyDescriptor> descriptors = new HashMap<Object, PropertyDescriptor>();

    public ElementListBeanWrapper(ElementListBean list, FieldValueWrapper wrapper) {
        this.list = list;
        this.wrapper = wrapper;
        this.wrapperList = new ArrayList();
    }

    public Object get(Object key) {
        return super.get(key);
    }

    public Object put(Object key, Object newValue) {
        List values = new ArrayList();

        if (newValue instanceof String[]) {
            values = Arrays.asList((String[]) newValue);
        } else if (newValue != null) {
            values = new ArrayList();
            values.add(newValue);
        }

        processValues(key, values);

        return super.put(key, newValue);
    }

    protected void processValues(Object key, List values) {
        boolean createWrappers = false;
        if (wrapperList.size() != values.size()) {
            wrapperList.clear();
            createWrappers = true;
        }

        for (int i = 0; i < values.size(); i++) {
            BeanWrapper wrapper;
            if (createWrappers) {
                wrapper = new BeanWrapperImpl(getWrapper().clone());
                wrapperList.add(wrapper);
            } else {
                wrapper = (BeanWrapper) wrapperList.get(i);
            }

            setValue(wrapper, key, values.get(i));
        }

    }

    protected void setValue(BeanWrapper wrapper, Object key, Object value) {
        wrapper.setPropertyValue((String) key, value);
    }

    public void validate(List errors) {
        getList().clear();
        for (Iterator<BeanWrapper> i = wrapperList.iterator(); i.hasNext();) {
            FieldValueWrapper fieldWrapper = (FieldValueWrapper) i.next().getWrappedInstance();

            if (fieldWrapper.getValue() != null) {
                ElementBean bean = getList().createBlank();
                fieldWrapper.validate(bean.getCurrentSchema().getName(), errors,
                        bean.getCurrentSchema().getLabel());
                bean.getBaseElement()
                        .addContent(bean.getCurrentSchema().getSchemaNormalizedValue(fieldWrapper.getValue()));
                getList().add(bean);
            }
        }
    }

    protected PropertyDescriptor getPropertyDescriptor(Object key) {
        PropertyDescriptor descriptor = descriptors.get(key);
        if (descriptor == null) {
            try {
                descriptor = new PropertyDescriptor((String) key, getWrapper().getClass());
                descriptors.put(key, descriptor);
            } catch (IntrospectionException e) {
                throw new RuntimeException(e);
            }
        }
        return descriptor;
    }

    public ElementListBean getList() {
        return list;
    }

    public void setList(ElementListBean list) {
        this.list = list;
    }

    public FieldValueWrapper getWrapper() {
        return wrapper;
    }

    public void setWrapper(FieldValueWrapper wrapper) {
        this.wrapper = wrapper;
    }

    public Class getType(String key) {
        return getPropertyDescriptor(key).getPropertyType();
    }

}