kalumet-modules/common/src/main/java/org/apache/kalumet/model/Access.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.kalumet.model;

import org.apache.xerces.dom.CoreDocumentImpl;
import org.apache.xerces.dom.ElementImpl;
import org.w3c.dom.Element;

import java.io.Serializable;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

/**
 * Represents the <code>access</code> tag in the Kalumet XML DOM.
 */
public class Access
    implements Serializable, Cloneable
{

    private static final long serialVersionUID = -3233389055334111823L;

    private String group;

    private List properties;

    public Access()
    {
        properties = new LinkedList();
    }

    public String getGroup()
    {
        return this.group;
    }

    public void setGroup( String group )
    {
        this.group = group;
    }

    public List getProperties()
    {
        return properties;
    }

    public void setProperties( List properties )
    {
        this.properties = properties;
    }

    /**
     * Add a new <code>Property</code> in the <code>Access</code>.
     *
     * @param property the <code>Property</code> to add.
     */
    public void addProperty( Property property )
        throws ModelObjectAlreadyExistsException
    {
        if ( this.getProperty( property.getName() ) != null )
        {
            throw new ModelObjectAlreadyExistsException( "Property name already exists in access." );
        }
        this.properties.add( property );
    }

    /**
     * Get the <code>Property</code> identified by a given name in the <code>Access</code>.
     *
     * @param name the <code>Property</code> name.
     * @return the <code>Property</code> found or null if no <code>Property</code> found.
     */
    public Property getProperty( String name )
    {
        for ( Iterator propertyIterator = this.properties.iterator(); propertyIterator.hasNext(); )
        {
            Property property = (Property) propertyIterator.next();
            if ( property.getName().equals( name ) )
            {
                return property;
            }
        }
        return null;
    }

    /**
     * @see java.lang.Object#clone()
     */
    public Object clone()
        throws CloneNotSupportedException
    {
        Access clone = new Access();
        clone.setGroup( this.getGroup() );
        for ( Iterator propertyIterator = this.getProperties().iterator(); propertyIterator.hasNext(); )
        {
            Property property = (Property) propertyIterator.next();
            clone.properties.add( (Property) property.clone() );
        }
        return clone;
    }

    /**
     * Transforms the <code>Access</code> POJO into a DOM element.
     *
     * @param document the core DOM document.
     * @return the DOM element.
     */
    protected Element toDOMElement( CoreDocumentImpl document )
    {
        ElementImpl element = new ElementImpl( document, "access" );
        element.setAttribute( "group", this.getGroup() );
        // properties
        ElementImpl properties = new ElementImpl( document, "properties" );
        for ( Iterator propertyIterator = this.getProperties().iterator(); propertyIterator.hasNext(); )
        {
            Property property = (Property) propertyIterator.next();
            properties.appendChild( property.toDOMElement( document ) );
        }
        element.appendChild( properties );
        return element;
    }

}