core/runtime/src/main/java/org/apache/zest/runtime/property/PropertiesModel.java

/*
 * Copyright (c) 2007-2011, Rickard Öberg. All Rights Reserved.
 *
 * 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.zest.runtime.property;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Member;
import java.util.LinkedHashMap;
import java.util.Map;
import org.apache.zest.api.common.QualifiedName;
import org.apache.zest.functional.HierarchicalVisitor;
import org.apache.zest.functional.VisitableHierarchy;

/**
 * Base class for properties model
 */
public class PropertiesModel
    implements VisitableHierarchy<Object, Object>
{
    protected final Map<AccessibleObject, PropertyModel> mapAccessiblePropertyModel = new LinkedHashMap<>();

    public PropertiesModel()
    {
    }

    public void addProperty( PropertyModel property )
    {
        mapAccessiblePropertyModel.put( property.accessor(), property );
    }

    @Override
    public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> visitor )
        throws ThrowableType
    {
        if( visitor.visitEnter( this ) )
        {
            for( PropertyModel propertyModel : mapAccessiblePropertyModel.values() )
            {
                if( !propertyModel.accept( visitor ) )
                {
                    break;
                }
            }
        }

        return visitor.visitLeave( this );
    }

    public Iterable<PropertyModel> properties()
    {
        return mapAccessiblePropertyModel.values();
    }

    public PropertyModel getProperty( AccessibleObject accessor )
    {
        PropertyModel propertyModel = mapAccessiblePropertyModel.get( accessor );
        if( propertyModel == null )
        {
            throw new IllegalArgumentException( "No property found with name: " + ( (Member) accessor ).getName() );
        }

        return propertyModel;
    }

    public PropertyModel getPropertyByName( String name )
        throws IllegalArgumentException
    {
        for( PropertyModel propertyModel : mapAccessiblePropertyModel.values() )
        {
            if( propertyModel.qualifiedName().name().equals( name ) )
            {
                return propertyModel;
            }
        }
        throw new IllegalArgumentException( "No property found with name: " + name );
    }

    public PropertyModel getPropertyByQualifiedName( QualifiedName name )
        throws IllegalArgumentException
    {
        for( PropertyModel propertyModel : mapAccessiblePropertyModel.values() )
        {
            if( propertyModel.qualifiedName().equals( name ) )
            {
                return propertyModel;
            }
        }
        throw new IllegalArgumentException( "No property found with qualified name: " + name );
    }
}