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1
22 package org.jboss.resource.statistic.pool;
23
24 import java.io.StringWriter  ;
25 import java.util.Collection ;
26 import java.util.Iterator ;
27
28 import javax.xml.parsers.DocumentBuilderFactory ;
29 import javax.xml.parsers.ParserConfigurationException ;
30 import javax.xml.transform.Source ;
31 import javax.xml.transform.TransformerException ;
32 import javax.xml.transform.TransformerFactory ;
33 import javax.xml.transform.dom.DOMSource ;
34 import javax.xml.transform.stream.StreamResult ;
35
36 import org.jboss.resource.statistic.JBossStatistics;
37 import org.jboss.resource.statistic.formatter.StatisticsFormatter;
38 import org.jboss.resource.statistic.formatter.StatisticsFormatterException;
39 import org.w3c.dom.Document ;
40 import org.w3c.dom.Element ;
41 import org.w3c.dom.Text ;
42
43
49 public class JBossXmlSubPoolStatisticFormatter implements StatisticsFormatter
50 {
51
52 public Object formatSubPoolStatistics(Collection subPoolStatistics)
53 {
54 final Document doc = createDocument();
55 final Element root = doc.createElement("subpool-statistics");
56 doc.appendChild(root);
57
58 for(Iterator iter = subPoolStatistics.iterator(); iter.hasNext();){
59
60 JBossSubPoolStatistics stat = (JBossSubPoolStatistics)iter.next();
61 createChildNode(doc, root, stat);
62
63 }
64
65 return getDocumentAsString(doc);
66 }
67
68 public Object formatSubPoolStatistics(ManagedConnectionPoolStatistics stats)
69 {
70 return formatSubPoolStatistics(stats.getSubPools());
71 }
72
73 private void createChildNode(Document doc, Element root, JBossSubPoolStatistics stat){
74
75 root.appendChild(createTextNode(doc, "max-connections-in-use", String.valueOf(stat.getMaxConnectionsInUse())));
76 root.appendChild(createTextNode(doc, "track-by-txn", String.valueOf(stat.getTrackByTxn())));
77 root.appendChild(createTextNode(doc, "connections-in-use", String.valueOf(stat.getConnectionsInUse())));
78 root.appendChild(createTextNode(doc, "connections-destroyed", String.valueOf(stat.getConnectionsDestroyed())));
79 root.appendChild(createTextNode(doc, "available-connections", String.valueOf(stat.getAvailableConnections())));
80
81 }
82
83 private Element createTextNode(Document doc, String name, String value){
84
85 Text node = doc.createTextNode(name);
86 node.setNodeValue(String.valueOf(value));
87 Element child = doc.createElement(name);
88 child.appendChild(node);
89 return child;
90
91
92 }
93
94 private Document createDocument(){
95
96 try
97 {
98 Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
99 return doc;
100 }
101 catch (ParserConfigurationException e)
102 {
103 throw new StatisticsFormatterException(e.getMessage());
104
105 }
106
107 }
108
109 private String getDocumentAsString(Document doc){
110
111 try
112 {
113 final Source source = new DOMSource (doc);
114 final StringWriter writer = new StringWriter ();
115 final StreamResult result = new StreamResult (writer);
116 TransformerFactory.newInstance().newTransformer().transform(source, result);
117 return writer.toString();
118 }
119 catch (TransformerException e)
120 {
121 throw new StatisticsFormatterException(e.getMessage());
122
123 }
124
125 }
126
127 public Object formatStatistics(JBossStatistics stats)
128 {
129 if(!(stats instanceof ManagedConnectionPoolStatistics)){
130
131 throw new IllegalArgumentException ("Error: invalid statistics implementaiton for formatter.");
132
133 }
134
135 final ManagedConnectionPoolStatistics poolStats = (ManagedConnectionPoolStatistics)stats;
136 return formatSubPoolStatistics(poolStats);
137 }
138
139 }
140 |
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