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hrmsEjb/net/sf/jasperreports/engine/xml/JRXmlTemplateLoader.java

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+package net.sf.jasperreports.engine.xml;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import net.sf.jasperreports.engine.JRException;
+import net.sf.jasperreports.engine.JRRuntimeException;
+import net.sf.jasperreports.engine.JRTemplate;
+import net.sf.jasperreports.engine.util.JRLoader;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.xml.sax.SAXException;
+
+public class JRXmlTemplateLoader {
+  private static final Log log = LogFactory.getLog(JRXmlTemplateLoader.class);
+  
+  public static JRTemplate load(String location) throws JRException {
+    byte[] data = JRLoader.loadBytesFromLocation(location);
+    return load(new ByteArrayInputStream(data));
+  }
+  
+  public static JRTemplate load(File file) {
+    BufferedInputStream fileIn;
+    try {
+      fileIn = new BufferedInputStream(new FileInputStream(file));
+    } catch (FileNotFoundException e) {
+      throw new JRRuntimeException("Template XML file not found", e);
+    } 
+    try {
+      return load(fileIn);
+    } finally {
+      try {
+        fileIn.close();
+      } catch (IOException e) {
+        log.warn("Error closing XML file", e);
+      } 
+    } 
+  }
+  
+  public static JRTemplate load(URL url) {
+    InputStream input;
+    try {
+      input = url.openStream();
+    } catch (IOException e) {
+      throw new JRRuntimeException("Error opening connection to template URL " + url, e);
+    } 
+    try {
+      return load(input);
+    } finally {
+      try {
+        input.close();
+      } catch (IOException e) {
+        log.warn("Error closing connection to template URL " + url, e);
+      } 
+    } 
+  }
+  
+  public static JRTemplate load(InputStream data) {
+    JRXmlTemplateLoader loader = new JRXmlTemplateLoader();
+    return loader.loadTemplate(data);
+  }
+  
+  protected JRTemplate loadTemplate(InputStream data) {
+    JRXmlDigester digester = JRXmlTemplateDigesterFactory.instance().createDigester();
+    try {
+      JRTemplate template = (JRTemplate)digester.parse(data);
+      return template;
+    } catch (IOException e) {
+      throw new JRRuntimeException("Error reading template XML", e);
+    } catch (SAXException e) {
+      throw new JRRuntimeException("Error parsing template XML", e);
+    } 
+  }
+}