org.apache.xmlgraphics.ps.dsc.DSCCommentFactory Maven / Gradle / Ivy
/*
* 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.
*/
/* $Id: DSCCommentFactory.java 1780540 2017-01-27 11:10:50Z ssteiner $ */
package org.apache.xmlgraphics.ps.dsc;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import org.apache.xmlgraphics.ps.DSCConstants;
import org.apache.xmlgraphics.ps.dsc.events.DSCComment;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentBeginDocument;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentBeginResource;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentBoundingBox;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentDocumentNeededResources;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentDocumentSuppliedResources;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentEndComments;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentEndOfFile;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentHiResBoundingBox;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentIncludeResource;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentLanguageLevel;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPage;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPageBoundingBox;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPageHiResBoundingBox;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPageResources;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentPages;
import org.apache.xmlgraphics.ps.dsc.events.DSCCommentTitle;
/**
* Factory for DSCComment subclasses.
*/
public final class DSCCommentFactory {
private DSCCommentFactory() {
}
private static final Map DSC_FACTORIES = new java.util.HashMap();
static {
DSC_FACTORIES.put(DSCConstants.END_COMMENTS,
DSCCommentEndComments.class);
DSC_FACTORIES.put(DSCConstants.BEGIN_RESOURCE,
DSCCommentBeginResource.class);
DSC_FACTORIES.put(DSCConstants.INCLUDE_RESOURCE,
DSCCommentIncludeResource.class);
DSC_FACTORIES.put(DSCConstants.PAGE_RESOURCES,
DSCCommentPageResources.class);
DSC_FACTORIES.put(DSCConstants.BEGIN_DOCUMENT,
DSCCommentBeginDocument.class);
DSC_FACTORIES.put(DSCConstants.PAGE,
DSCCommentPage.class);
DSC_FACTORIES.put(DSCConstants.PAGES,
DSCCommentPages.class);
DSC_FACTORIES.put(DSCConstants.BBOX,
DSCCommentBoundingBox.class);
DSC_FACTORIES.put(DSCConstants.HIRES_BBOX,
DSCCommentHiResBoundingBox.class);
DSC_FACTORIES.put(DSCConstants.PAGE_BBOX,
DSCCommentPageBoundingBox.class);
DSC_FACTORIES.put(DSCConstants.PAGE_HIRES_BBOX,
DSCCommentPageHiResBoundingBox.class);
DSC_FACTORIES.put(DSCConstants.LANGUAGE_LEVEL,
DSCCommentLanguageLevel.class);
DSC_FACTORIES.put(DSCConstants.DOCUMENT_NEEDED_RESOURCES,
DSCCommentDocumentNeededResources.class);
DSC_FACTORIES.put(DSCConstants.DOCUMENT_SUPPLIED_RESOURCES,
DSCCommentDocumentSuppliedResources.class);
DSC_FACTORIES.put(DSCConstants.TITLE,
DSCCommentTitle.class);
DSC_FACTORIES.put(DSCConstants.EOF,
DSCCommentEndOfFile.class);
//TODO Add additional implementations as needed
}
/**
* Creates and returns new instances for DSC comments with a given name.
* @param name the name of the DSCComment (without the "%%" prefix)
* @return the new instance or null if no particular subclass registered for the given
* DSC comment.
*/
public static DSCComment createDSCCommentFor(String name) {
Class clazz = (Class)DSC_FACTORIES.get(name);
if (clazz == null) {
return null;
}
try {
return (DSCComment)clazz.getDeclaredConstructor().newInstance();
} catch (InstantiationException e) {
throw new RuntimeException("Error instantiating instance for '" + name + "': "
+ e.getMessage());
} catch (IllegalAccessException e) {
throw new RuntimeException("Illegal Access error while instantiating instance for '"
+ name + "': " + e.getMessage());
} catch (NoSuchMethodException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
throw new RuntimeException(e);
}
}
}