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1
64
65 package com.jcorporate.expresso.kernel.management;
66
67 import com.jcorporate.expresso.kernel.exception.ExpressoRuntimeException;
68 import com.jcorporate.expresso.kernel.util.ClassLocator;
69 import org.w3c.dom.Document  ;
70
71 import javax.xml.transform.Result ;
72 import javax.xml.transform.Source ;
73 import javax.xml.transform.Transformer ;
74 import javax.xml.transform.TransformerException ;
75 import javax.xml.transform.TransformerFactory ;
76 import javax.xml.transform.TransformerFactoryConfigurationError ;
77 import javax.xml.transform.dom.DOMSource ;
78 import javax.xml.transform.stream.StreamResult ;
79 import java.io.OutputStream ;
80
81
89
90 public class TraxDOMWriter implements DOMWriter {
91
92 public TraxDOMWriter() {
93 }
94
95 public void saveDocument(OutputStream os, Document document) throws ExpressoRuntimeException {
96 if (!isTraxInstalled()) {
97 throw new ExpressoRuntimeException(
98 "Must have javax.xml.transform.TransformerFactory in classpath. EX: Xalan");
99 }
100
101 try {
102 TransformerFactory xformFactory = TransformerFactory.newInstance();
103 Transformer idTransform = xformFactory.newTransformer();
104 Source input = new DOMSource (document);
105 Result output = new StreamResult (os);
106 idTransform.transform(input, output);
107 } catch (TransformerException ex) {
108 throw new ExpressoRuntimeException("Unable to save config file", ex);
109 } catch (TransformerFactoryConfigurationError ex) {
110 throw new ExpressoRuntimeException("Unable to save config file", ex);
111 }
112 }
113
114
120 public String getRequiredClass() {
121 return "javax.xml.transform.TransformerFactory";
122 }
123
124
125
131 protected boolean isTraxInstalled() {
132 try {
133 ClassLocator.loadClass(getRequiredClass());
134 } catch (ClassNotFoundException ex) {
135 return false;
136 }
137
138 return true;
139
140 }
141 } |
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