/*
 * Copyright 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.apache.commons.betwixt.schema;

import java.beans.IntrospectionException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.betwixt.AttributeDescriptor;
import org.apache.commons.betwixt.ElementDescriptor;
import org.apache.commons.betwixt.XMLBeanInfo;

/**
 * @author <a href='http://jakarta.apache.org/'>Jakarta Commons Team</a>
 * @version $Revision: 1.2 $
 */
public abstract class ComplexType {

    protected List elements = new ArrayList();

    protected List attributes = new ArrayList();

    public ComplexType() {}

    public ComplexType(TranscriptionConfiguration configuration, ElementDescriptor elementDescriptor, Schema schema) throws IntrospectionException {
        if (elementDescriptor.isHollow()) {
            // need to introspector for filled descriptor
            Class type = elementDescriptor.getSingularPropertyType();
            if (type == null) {
                type = elementDescriptor.getPropertyType();
            }
            XMLBeanInfo filledBeanInfo = schema.introspect(type);
            elementDescriptor = filledBeanInfo.getElementDescriptor();
        }
        init(configuration, elementDescriptor, schema);      
    }

    protected void init(TranscriptionConfiguration configuration, ElementDescriptor elementDescriptor, Schema schema) throws IntrospectionException {
        
        AttributeDescriptor[] attributeDescriptors = elementDescriptor.getAttributeDescriptors();
        for (int i=0,length=attributeDescriptors.length; i<length ; i++) {
            //TODO: need to think about computing schema types from descriptors
            // this will probably depend on the class mapped to
            String uri = attributeDescriptors[i].getURI();
            if (! SchemaTranscriber.W3C_SCHEMA_INSTANCE_URI.equals(uri)) {
                attributes.add(new Attribute(attributeDescriptors[i]));
            }
        }
        
        //TODO: add support for spacing elements
        ElementDescriptor[] elementDescriptors = elementDescriptor.getElementDescriptors();
        for (int i=0,length=elementDescriptors.length; i<length ; i++) {
            if (elementDescriptors[i].isHollow()) {
                elements.add(new ElementReference(configuration, elementDescriptors[i], schema));
            } else if (elementDescriptors[i].isSimple()){
                elements.add(new SimpleLocalElement(configuration, elementDescriptors[i], schema));
            } else {
                elements.add(new ComplexLocalElement(configuration, elementDescriptors[i], schema));
            }
        } 
    }

    /**
    	 * Gets the elements contained by this type
    	 * @return 
    	 */
    public List getElements() {
    	return elements;
    }

    /**
    	 * Adds an element to those contained by this type
    	 * @param element
    	 */
    public void addElement(ElementReference element) {
    	elements.add(element);
    }
    
    /**
          * Adds an element to those contained by this type
          * @param element
          */
     public void addElement(LocalElement element) {
         elements.add(element);
     }


    /**
    	 * Gets the attributes contained by this type.
    	 * @return
    	 */
    public List getAttributes() {
    	return attributes;
    }

    /**
    	 * Adds an attribute to those contained by this type
    	 * @param attribute
    	 */
    public void addAttribute(Attribute attribute) {
    	attributes.add(attribute);
    }

}