/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.envers.configuration.metadata;

import java.util.Properties;

import org.dom4j.Element;

import org.hibernate.envers.configuration.metadata.reader.PropertyAuditingData;
import org.hibernate.envers.entities.mapper.SimpleMapperBuilder;
import org.hibernate.mapping.SimpleValue;
import org.hibernate.mapping.Value;
import org.hibernate.type.BasicType;
import org.hibernate.type.SerializableToBlobType;
import org.hibernate.type.Type;

/**
 * Generates metadata for basic properties: immutable types (including enums).
 * @author Adam Warski (adam at warski dot org)
 */
public final class BasicMetadataGenerator {
    @SuppressWarnings({"unchecked"})
	boolean addBasic(Element parent, PropertyAuditingData propertyAuditingData,
					 Value value, SimpleMapperBuilder mapper, boolean insertable, boolean key) {
		Type type = value.getType();

		if (type instanceof BasicType || type instanceof SerializableToBlobType ||
                "org.hibernate.type.PrimitiveByteArrayBlobType".equals(type.getClass().getName())) {
            if (parent != null) {
                boolean addNestedType = (value instanceof SimpleValue) && ((SimpleValue) value).getTypeParameters() != null;

                String typeName = type.getName();
                if (typeName == null) {
                    typeName = type.getClass().getName();
                }

                Element prop_mapping = MetadataTools.addProperty(parent, propertyAuditingData.getName(),
                        addNestedType ? null : typeName, propertyAuditingData.isForceInsertable() || insertable, key);
                MetadataTools.addColumns(prop_mapping, value.getColumnIterator());

                if (addNestedType) {
                    Properties typeParameters = ((SimpleValue) value).getTypeParameters();
                    Element type_mapping = prop_mapping.addElement("type");
                    type_mapping.addAttribute("name", typeName);

					for ( Object object : typeParameters.keySet() ) {
						String keyType = (String) object;
						String property = typeParameters.getProperty( keyType );

						if ( property != null ) {
							Element type_param = type_mapping.addElement( "param" );
							type_param.addAttribute( "name", keyType );
							type_param.setText( property );
						}
					}
				}
            }

            // A null mapper means that we only want to add xml mappings
            if (mapper != null) {
                mapper.add(propertyAuditingData.getPropertyData());
            }
		} else {
			return false;
		}

		return true;
	}

    @SuppressWarnings({"unchecked"})
    boolean addKeyManyToOne(Element parent, PropertyAuditingData propertyAuditingData, Value value,
                            SimpleMapperBuilder mapper) {
        Type type = value.getType();

        Element manyToOneElement = parent.addElement("key-many-to-one");
        manyToOneElement.addAttribute("name", propertyAuditingData.getName());
        manyToOneElement.addAttribute("class", type.getName());
        MetadataTools.addColumns(manyToOneElement, value.getColumnIterator());

        // A null mapper means that we only want to add xml mappings
        if (mapper != null) {
            mapper.add(propertyAuditingData.getPropertyData());
        }
        return true;
    }
}