org.atemsource.atem.utility.common.AttributeOperationBuilder Maven / Gradle / Ivy

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/*******************************************************************************
 * Stefan Meyer, 2012 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.atemsource.atem.utility.common;

import org.atemsource.atem.api.attribute.Attribute;
import org.atemsource.atem.api.type.Type;


public abstract class AttributeOperationBuilder, V extends EntityTypeOperationBuilder>
{
	private Attribute attribute;

	private V entityOperationBuilder;

	private EntityTypeOperationBuilder parent;

	private final EntityOperationSelector selector = new EntityOperationSelector();

	public V cascade()
	{
		if (getAttribute().getTargetType() == null)
		{
			throw new IllegalArgumentException("cannot cascade comparison on attribute " + attribute.getCode()
				+ " because target type is unknown");
		}
		this.entityOperationBuilder = parent.cascade(this);
		return this.entityOperationBuilder;
	}

	public void cascade(O entityOperation)
	{
		this.selector.setDefaultOperation(entityOperation);
	}

	public void cascadeDynamically(Type type, EntityOperationReference ref)
	{
		this.selector.put(type, ref);
	}

	public void cascadeDynamically(Type type, O entityOperation)
	{
		this.selector.put(type, entityOperation);
	}

	protected EntityOperationSelector createEntityOperation()
	{
		if (entityOperationBuilder != null)
		{
			O entityOperation = entityOperationBuilder.create();
			selector.setDefaultOperation(entityOperation);
		}
		return selector;
	}

	protected abstract P createOperation();

	public Attribute getAttribute()
	{
		return attribute;
	}

	public void setAttribute(Attribute attribute)
	{
		this.attribute = attribute;
	}

	public void setParent(EntityTypeOperationBuilder parent)
	{
		this.parent = parent;
	}
}