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hrmsEjb/net/sf/jasperreports/engine/fill/JRFillReportTemplate.java

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+package net.sf.jasperreports.engine.fill;
+
+import java.io.File;
+import java.io.InputStream;
+import java.net.URL;
+import net.sf.jasperreports.engine.JRException;
+import net.sf.jasperreports.engine.JRExpression;
+import net.sf.jasperreports.engine.JRReportTemplate;
+import net.sf.jasperreports.engine.JRRuntimeException;
+import net.sf.jasperreports.engine.JRTemplate;
+import net.sf.jasperreports.engine.xml.JRXmlTemplateLoader;
+
+public class JRFillReportTemplate implements JRReportTemplate {
+  private final JRReportTemplate parent;
+  
+  private final JRBaseFiller filler;
+  
+  public JRFillReportTemplate(JRReportTemplate template, JRBaseFiller filler, JRFillObjectFactory factory) {
+    factory.put(template, this);
+    this.parent = template;
+    this.filler = filler;
+  }
+  
+  public JRExpression getSourceExpression() {
+    return this.parent.getSourceExpression();
+  }
+  
+  public JRTemplate evaluate() throws JRException {
+    JRTemplate template;
+    JRExpression sourceExpression = getSourceExpression();
+    Object source = this.filler.evaluateExpression(sourceExpression, (byte)3);
+    if (source == null) {
+      template = null;
+    } else {
+      Class sourceType = sourceExpression.getValueClass();
+      if (JRTemplate.class.isAssignableFrom(sourceType)) {
+        template = (JRTemplate)source;
+      } else {
+        template = loadTemplate(source, sourceType, this.filler.fillContext);
+      } 
+    } 
+    return template;
+  }
+  
+  protected static JRTemplate loadTemplate(Object source, Class sourceType, JRFillContext fillContext) throws JRException {
+    JRTemplate template;
+    if (fillContext.hasLoadedTemplate(source)) {
+      template = fillContext.getLoadedTemplate(source);
+    } else {
+      if (String.class.equals(sourceType)) {
+        template = JRXmlTemplateLoader.load((String)source);
+      } else if (File.class.isAssignableFrom(sourceType)) {
+        template = JRXmlTemplateLoader.load((File)source);
+      } else if (URL.class.isAssignableFrom(sourceType)) {
+        template = JRXmlTemplateLoader.load((URL)source);
+      } else if (InputStream.class.isAssignableFrom(sourceType)) {
+        template = JRXmlTemplateLoader.load((InputStream)source);
+      } else {
+        throw new JRRuntimeException("Unknown template source class " + sourceType.getName());
+      } 
+      fillContext.registerLoadedTemplate(source, template);
+    } 
+    return template;
+  }
+}