sboag 00/12/15 12:01:38
Modified: java/samples/ApplyXPath ApplyXPath.java
Log:
Fixed serialization to use TrAX.
Revision Changes Path
1.15 +34 -65 xml-xalan/java/samples/ApplyXPath/ApplyXPath.java
Index: ApplyXPath.java
===================================================================
RCS file: /home/cvs/xml-xalan/java/samples/ApplyXPath/ApplyXPath.java,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -r1.14 -r1.15
--- ApplyXPath.java 2000/12/08 15:04:05 1.14
+++ ApplyXPath.java 2000/12/15 20:01:38 1.15
@@ -58,6 +58,7 @@
import java.io.FileInputStream;
import java.io.FileNotFoundException;
+import java.util.Properties;
import org.apache.xerces.parsers.DOMParser;
import org.apache.xpath.XPathAPI;
import org.apache.xml.utils.TreeWalker;
@@ -77,11 +78,9 @@
import javax.xml.parsers.ParserConfigurationException;
// Imported Serializer classes
-import org.apache.xalan.serialize.Serializer;
-import org.apache.xalan.serialize.SerializerFactory;
-import org.apache.xalan.serialize.DOMSerializer;
-import org.apache.xalan.serialize.Method;
-import org.apache.xalan.templates.OutputProperties;
+import javax.xml.transform.*;
+import javax.xml.transform.stream.*;
+import javax.xml.transform.dom.*;
/**
* Very basic utility for applying an XPath epxression to an xml file and
printing information
@@ -101,6 +100,7 @@
/** Process input args and execute the XPath. */
public void doMain(String[] args)
+ throws Exception
{
filename = args[0];
xpath = args[1];
@@ -108,65 +108,34 @@
if ((filename != null) && (filename.length() > 0)
&& (xpath != null) && (xpath.length() > 0))
{
- InputSource in;
- try
- {
- in = new InputSource(new FileInputStream(filename));
- }
- catch (FileNotFoundException fnf)
- {
- System.err.println("FileInputStream of " + filename + " threw: " +
fnf.toString());
- fnf.printStackTrace();
- return;
- }
- Document doc = null;
- try
- {
- DocumentBuilderFactory dfactory =
DocumentBuilderFactory.newInstance();
- DocumentBuilder docBuilder = dfactory.newDocumentBuilder();
- doc = docBuilder.parse(in);
- }
- catch (ParserConfigurationException pce)
- {
- pce.printStackTrace();
- }
- catch(Exception e1)
- {
- System.err.println("Parsing " + filename + " threw: " +
e1.toString());
- e1.printStackTrace();
- return;
- }
- NodeIterator nl = null;
- try
- {
- // Use the simple XPath API to select a nodeIterator.
- nl = XPathAPI.selectNodeIterator(doc, xpath);
- }
- catch (Exception e2)
- {
- System.err.println("selectNodeIterator threw: " + e2.toString() + "
perhaps your xpath didn't select any nodes");
- e2.printStackTrace();
- return;
- }
- try
- {
- // Get a Serializer
- Serializer ser = SerializerFactory.getSerializer
-
(OutputProperties.getDefaultMethodProperties("xml"));
- // Serialize to the screen.
- ser.setOutputStream(System.out);
-
- Node n = null;
- while ((n = nl.nextNode())!= null)
- { //System.out.println("Node is " + n.getNodeName());
- ser.asDOMSerializer().serialize(n);
- }
- }
- catch (Exception e3)
- {
- e3.printStackTrace();
- return;
+ // Tell that we're loading classes and parsing, so the time it
+ // takes to do this doesn't get confused with the time to do
+ // the actual query and serialization.
+ System.out.println("Loading classes, parsing "+filename+", and setting
up serializer");
+
+ // Set up a DOM tree to query.
+ InputSource in = new InputSource(new FileInputStream(filename));
+ DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
+ Document doc = dfactory.newDocumentBuilder().parse(in);
+
+ // Set up an identity transformer to use as serializer.
+ Transformer serializer =
TransformerFactory.newInstance().newTransformer();
+ serializer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
+
+ // Use the simple XPath API to select a nodeIterator.
+ System.out.println("Querying DOM using "+xpath);
+ NodeIterator nl = XPathAPI.selectNodeIterator(doc, xpath);
+
+ // Serialize the found nodes to System.out.
+ System.out.println("<output>");
+
+ Node n;
+ while ((n = nl.nextNode())!= null)
+ {
+ serializer.transform(new DOMSource(n), new StreamResult(System.out));
+ System.out.println();
}
+ System.out.println("</output>");
}
else
{
@@ -176,6 +145,7 @@
/** Main method to run from the command line. */
public static void main (String[] args)
+ throws Exception
{
if (args.length != 2)
{
@@ -183,10 +153,9 @@
+ "Reads filename.xml and applies the xpath; prints
the nodelist found.");
return;
}
+
ApplyXPath app = new ApplyXPath();
- System.out.println("<output>");
app.doMain(args);
- System.out.println("</output>");
}
} // end of class ApplyXPath
