de.intarsys.pdf.pd.PDTransformMethod Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.pdf.pd;

import de.intarsys.pdf.cos.COSBasedObject;
import de.intarsys.pdf.cos.COSName;
import de.intarsys.pdf.cos.COSObject;

/**
 * An abstract implementation of the strategy for computing a signature.
 * 
 */
public class PDTransformMethod extends PDObject {
	/**
	 * The meta class implementation
	 */
	public static class MetaClass extends PDObject.MetaClass {
		protected MetaClass(Class instanceClass) {
			super(instanceClass);
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see de.intarsys.pdf.cos.COSBasedObject.MetaClass#doCreateCOSBasedObject(de.intarsys.pdf.cos.COSObject)
		 */
		@Override
		protected COSBasedObject doCreateCOSBasedObject(COSObject object) {
			return getSingleton((COSName) object);
		}

		@Override
		public Class getRootClass() {
			return PDTransformMethod.class;
		}
	}

	public static final COSName DK_DocMDP = COSName.constant("DocMDP");

	public static final COSName DK_UR = COSName.constant("UR");

	public static final COSName DK_FieldMDP = COSName.constant("FieldMDP");

	public static final COSName DK_Identity = COSName.constant("Identity");

	/** The meta class instance */
	public static final MetaClass META = new MetaClass(MetaClass.class
			.getDeclaringClass());

	public static PDTransformMethod getSingleton(COSName name) {
		if (DK_DocMDP.equals(name)) {
			return PDTransformMethodDocMDP.SINGLETON;
		} else if (DK_UR.equals(name)) {
			return PDTransformMethodUR.SINGLETON;
		} else if (DK_FieldMDP.equals(name)) {
			return PDTransformMethodFieldMDP.SINGLETON;
		} else if (DK_Identity.equals(name)) {
			return PDTransformMethodIdentity.SINGLETON;
		} else {
			return null;
		}
	}

	protected PDTransformMethod(COSName name) {
		super(name);
	}
}