/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.internal.service.pipeline;
import java.util.HashMap;
import java.util.Map;
import org.geomajas.global.ExceptionCode;
import org.geomajas.global.GeomajasException;
import org.geomajas.service.pipeline.PipelineContext;
/**
* Context which is provided to a pipeline context to help execute.
*
* @author Joachim Van der Auwera
*/
public class PipelineContextImpl implements PipelineContext {
private Map<String, Object> map = new HashMap<String, Object>();
private boolean finished;
public boolean containsKey(String key) {
return map.containsKey(key);
}
public Object get(String key) throws GeomajasException {
Object res = getOptional(key);
if (null == res) {
throw new GeomajasException(ExceptionCode.PIPELINE_CONTEXT_MISSING, key);
}
return res;
}
public Object getOptional(String key) {
return map.get(key);
}
public <TYPE> TYPE get(String key, Class<TYPE> type) throws GeomajasException {
TYPE res = getOptional(key, type);
if (null == res) {
throw new GeomajasException(ExceptionCode.PIPELINE_CONTEXT_MISSING, key);
}
return res;
}
public <TYPE> TYPE getOptional(String key, Class<TYPE> type) {
Object obj = map.get(key);
if (null != obj && type.isAssignableFrom(obj.getClass())) {
return (TYPE) obj;
}
return null;
}
public Object put(String key, Object value) {
if (null != key) {
return map.put(key, value);
}
return null;
}
public boolean isFinished() {
return finished;
}
public void setFinished(boolean finished) {
this.finished = finished;
}
}