org.jibx.schema.generator.FormatterCache Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2009, Dennis M. Sosnoski. All rights reserved.
*
* 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
* JiBX 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 org.jibx.schema.generator;
import java.util.HashMap;
import java.util.Map;
import org.jibx.custom.classes.IDocumentFormatter;
import org.jibx.custom.classes.SharedNestingBase;
import org.jibx.util.IClassLocator;
/**
* Cache of JavaDoc formatter instances.
*/
public class FormatterCache
{
/** Locator for class information (null if none). */
private final IClassLocator m_locator;
/** Map from class name to instance. This is used to keep track of JavaDoc formatter instances. */
private final Map m_classInstances;
/**
* Constructor.
*
* @param loc locator for class information (null if none)
*/
public FormatterCache(IClassLocator loc) {
m_locator = loc;
m_classInstances = new HashMap();
}
/**
* Get the JavaDoc formatter instance for a customization.
*
* @param custom customization information
* @return formatter
*/
public IDocumentFormatter getFormatter(SharedNestingBase custom) {
String cname = custom.getFormatterClass();
IDocumentFormatter format = (IDocumentFormatter)m_classInstances.get(cname);
if (format == null) {
Class clas = m_locator.loadClass(cname);
if (clas == null) {
throw new IllegalStateException("Cannot load document formatter class " + cname);
}
try {
Object inst = clas.newInstance();
if (!(inst instanceof IDocumentFormatter)) {
throw new IllegalStateException("Specified document formatter class does not implement IDocumentFormatter interface: " + cname);
}
m_classInstances.put(cname, inst);
format = (IDocumentFormatter)inst;
} catch (InstantiationException e) {
throw new IllegalStateException("Cannot create instance of document formatter class " + cname);
} catch (IllegalAccessException e) {
throw new IllegalStateException("Cannot access document formatter class " + cname);
}
}
return format;
}
}