/* * BioJava development code * * This code may be freely distributed and modified under the * terms of the GNU Lesser General Public Licence. This should * be distributed with the code. If you do not have a copy, * see: * * http://www.gnu.org/copyleft/lesser.html * * Copyright for this code is held jointly by the individual * authors. These should be listed in @author doc comments. * * For more information on the BioJava project and its aims, * or to join the biojava-l mailing list, visit the home page * at: * * http://www.biojava.org/ * */ package org.biojava.bio.program.tagvalue; import org.biojava.utils.ParserException; /** *
* Helper class to wrap one TagValueListener inside another one. *
* ** Implementations will tend to intercept the tags or values as they stream * through and modify them in some manner before forwarding them to the delegate * listener. Using classes derived from SimpleTagValueWrapper, it is possible to build * up complex chains of handlers that process and collate information as it * streams through. *
* * @author Matthew Pocock * @author David Huen (change of TagValueWrapper to interface) * @since 1.2 */ public abstract class SimpleTagValueWrapper implements TagValueWrapper { private TagValueListener delegate; /** * Build a SimpleTagValueWrapper that will forward everything to a delegate. * * @param delegate the SimpleTagValueWrapper to forward events to */ public SimpleTagValueWrapper(TagValueListener delegate) { this.delegate = delegate; } public SimpleTagValueWrapper() { delegate = null; } public TagValueListener getDelegate() { return delegate; } public void setDelegate(TagValueListener delegate) { this.delegate = delegate; } public void startRecord() throws ParserException { delegate.startRecord(); } public void endRecord() throws ParserException { delegate.endRecord(); } public void startTag(Object tag) throws ParserException { delegate.startTag(tag); } public void endTag() throws ParserException { delegate.endTag(); } public void value(TagValueContext ctxt, Object value) throws ParserException { delegate.value(ctxt, value); } }