01: /* ================================================================
02: * Cewolf : Chart enabling Web Objects Framework
03: * ================================================================
04: *
05: * Project Info: http://cewolf.sourceforge.net
06: * Project Lead: Guido Laures (guido@laures.de);
07: *
08: * (C) Copyright 2002, by Guido Laures
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: */
22:
23: package de.laures.cewolf.taglib.tags;
24:
25: import javax.servlet.jsp.JspException;
26:
27: import de.laures.cewolf.DatasetProducer;
28: import de.laures.cewolf.taglib.DataAware;
29:
30: /**
31: * Tag <producer> which defines a DatasetProducer.
32: * @see DataTag
33: * @author Guido Laures
34: */
35: public class ProducerTag extends AbstractParameterizedObjectTag {
36:
37: private boolean useCache = true;
38:
39: public int doEndTag() throws JspException {
40: DatasetProducer dataProducer = null;
41: try {
42: dataProducer = (DatasetProducer) getObject();
43: if (dataProducer == null) {
44: throw new JspException(
45: "Could not find datasetproducer under ID '"
46: + getId() + "'");
47: }
48: } catch (ClassCastException cce) {
49: throw new JspException("Bean under ID '" + getId()
50: + "' is of type '"
51: + getObject().getClass().getName()
52: + "'.\nType expected:"
53: + DatasetProducer.class.getName());
54: }
55: DataAware dw = (DataAware) findAncestorWithClass(this ,
56: DataAware.class);
57: log.debug("setting data config on " + dw);
58: log.debug("useCache = " + useCache);
59: addParameter(DatasetProducer.PRODUCER_ATTRIBUTE_NAME, getId());
60: dw.setDataProductionConfig(dataProducer, getParameters(),
61: useCache);
62: return doAfterEndTag(EVAL_BODY_INCLUDE);
63: }
64:
65: /**
66: * Sets the useCache.
67: * @param useCache The useCache to set
68: */
69: public void setUsecache(boolean useCache) {
70: this.useCache = useCache;
71: }
72:
73: }
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