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1 package org.sapia.soto.state.cocoon.view;
2
3 import org.apache.commons.lang.ClassUtils;
4 import org.infohazard.domify.DOMAdapter;
5
6 import org.sapia.soto.state.Result;
7 import org.sapia.soto.state.StateRuntimeException;
8 import org.sapia.soto.state.Step;
9 import org.sapia.soto.state.cocoon.CocoonContext;
10 import org.sapia.soto.state.xml.StyleStep;
11 import org.sapia.soto.state.xml.TransformState;
12 import org.sapia.soto.state.xml.XMLContext;
13
14 import org.sapia.util.xml.confix.ConfigurationException;
15
16 import org.xml.sax.ContentHandler  ;
17
18 import java.io.IOException ;
19 import java.util.Map ;
20
21 import javax.xml.transform.Transformer ;
22 import javax.xml.transform.TransformerConfigurationException ;
23 import javax.xml.transform.TransformerFactory ;
24 import javax.xml.transform.dom.DOMSource ;
25 import javax.xml.transform.sax.SAXResult ;
26
27
44 public class DomifyView extends TransformState implements Step{
45 private String _uri;
46 private String _name;
47 private String _id;
48 private TransformerFactory _fac;
49
50 public DomifyView() {
51 _fac = TransformerFactory.newInstance();
52 }
53
54
57 public String getName() {
58 return ClassUtils.getShortClassName(getClass());
59 }
60
61
62
66 public void setRootName(String name) {
67 _name = name;
68 }
69
70
73 protected void process(Result res, ContentHandler handler) {
74 XMLContext ctx = (XMLContext) res.getContext();
75
76 if (ctx.getContentHandler() == null) {
77 return;
78 }
79
80 Object model = null;
81
82 if (ctx.hasCurrentObject()) {
83 model = ctx.currentObject();
84 } else {
85 model = new NullObject();
86 }
87
88 try {
89 execute(model, ctx.getViewParams(), handler);
90 } catch (Throwable t) {
91 throw new StateRuntimeException("Could not execute XSL pipeline", t);
92 }
93 }
94
95 protected void execute(Object model, Map viewParams, ContentHandler handler)
96 throws Throwable {
97
98 if (_name == null) {
99 _name = CocoonContext.MODEL_KEY;
100 }
101
102 DOMSource src = new DOMSource (new DOMAdapter().adapt(model, _name));
103 SAXResult res = new SAXResult (handler);
104 Transformer tx = _fac.newTransformer();
105 tx.transform(src, res);
106 }
107
108
111 public void handleObject(String name, Object obj)
112 throws ConfigurationException {
113 if (obj instanceof XslSource) {
114 try{
115 XslSource xsl = (XslSource)obj;
116 StyleStep step = new StyleStep();
117 step.setEnv(env());
118 step.setSrc(xsl.getUri());
119 }catch(TransformerConfigurationException e){
120 throw new ConfigurationException("Could not instantiate StyleStep", e);
121 }catch(IOException e){
122 throw new ConfigurationException("Could not inialize stylesheet", e);
123 }
124 }
125 else{
126 super.handleObject(name, obj);
127 }
128 }
129
130 public static class NullObject {
132 }
133 }
134 |
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