svn commit: r772517 - /ofbiz/trunk/framework/base/src/org/ofbiz/base/util/string/UelFunctions.java

[adrianc]

Author: adrianc
Date: Thu May  7 06:43:53 2009
New Revision: 772517

URL: http://svn.apache.org/viewvc?rev=772517&view=rev
Log:
Added UEL functions to read and write XML files.

Modified:
    ofbiz/trunk/framework/base/src/org/ofbiz/base/util/string/UelFunctions.java

Modified: ofbiz/trunk/framework/base/src/org/ofbiz/base/util/string/UelFunctions.java
URL: http://svn.apache.org/viewvc/ofbiz/trunk/framework/base/src/org/ofbiz/base/util/string/UelFunctions.java?rev=772517&r1=772516&r2=772517&view=diff
==============================================================================
--- ofbiz/trunk/framework/base/src/org/ofbiz/base/util/string/UelFunctions.java (original)
+++ ofbiz/trunk/framework/base/src/org/ofbiz/base/util/string/UelFunctions.java Thu May  7 06:43:53 2009
@@ -18,7 +18,9 @@
  *******************************************************************************/
 package org.ofbiz.base.util.string;
 
+import java.io.File;
 import java.io.InputStream;
+import java.io.FileOutputStream;
 import java.lang.reflect.Method;
 import java.net.URL;
 import java.text.DateFormat;
@@ -33,7 +35,13 @@
 
 import org.ofbiz.base.location.FlexibleLocation;
 import org.ofbiz.base.util.Debug;
+import org.ofbiz.base.util.FileUtil;
 import org.ofbiz.base.util.UtilDateTime;
+import org.ofbiz.base.util.UtilXml;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
 
 /** Implements Unified Expression Language functions.
  * <p>Built-in functions are divided into a number of
@@ -130,6 +138,9 @@
  * <tr><td><code>util:size(Object)</code></td><td>Returns the size of <code>Maps</code>,
  * <code>Collections</code>, and <code>Strings</code>. Invalid <code>Object</code> types return -1.</td></tr>
  * <tr><td><code>util:urlExists(String)</code></td><td>Returns <code>true</code> if the specified URL exists.</td></tr>
+ * <tr><td colspan="2"><b><code>dom:</code> contains <code>org.w3c.dom.*</code> functions</b></td></tr>
+ * <tr><td><code>dom:readXmlDocument(String)</code></td><td>Reads an XML file and returns a <code>org.w3c.dom.Document</code> instance.</td></tr>
+ * <tr><td><code>dom:writeXmlDocument(String, Node, String encoding, boolean omitXmlDeclaration, boolean indent, int indentAmount)</code></td><td>Writes a <code>org.w3c.dom.Node</code> to an XML file and returns <code>true</code> if successful.</td></tr>
  * </table>
  */
 public class UelFunctions {
@@ -233,8 +244,10 @@
                 this.functionMap.put("util:defaultLocale", Locale.class.getMethod("getDefault"));
                 this.functionMap.put("util:defaultTimeZone", TimeZone.class.getMethod("getDefault"));
                 this.functionMap.put("util:urlExists", UelFunctions.class.getMethod("urlExists", String.class));
+                this.functionMap.put("dom:readXmlDocument", UelFunctions.class.getMethod("readXmlDocument", String.class));
+                this.functionMap.put("dom:writeXmlDocument", UelFunctions.class.getMethod("writeXmlDocument", String.class, Node.class, String.class, boolean.class, boolean.class, int.class));
             } catch (Exception e) {
-                Debug.logError("Error while initializing UelFunctions.Functions instance: " + e, module);
+                Debug.logError(e, "Error while initializing UelFunctions.Functions instance", module);
             }
             Debug.logVerbose("UelFunctions.Functions loaded " + this.functionMap.size() + " functions", module);
         }
@@ -404,4 +417,52 @@
         } catch (Exception e) {}
         return result;
     }
+
+    public static Document readXmlDocument(String str) {
+        Document document = null;
+        try {
+            URL url = FlexibleLocation.resolveLocation(str);
+            if (url != null) {
+                InputStream is = url.openStream();
+                document = UtilXml.readXmlDocument(is, str);
+                is.close();
+            } else {
+                Debug.logError("Unable to locate XML document " + str, module);
+            }
+        } catch (Exception e) {
+            Debug.logError(e, "Error while reading XML document " + str, module);
+        }
+        return document;
+    }
+
+    public static boolean writeXmlDocument(String str, Node node, String encoding, boolean omitXmlDeclaration, boolean indent, int indentAmount) {
+        Element element = null;
+        if (node instanceof Document) {
+            element = ((Document) node).getDocumentElement();
+        } else {
+            try {
+                element = (Element) node;
+            } catch (Exception e) {}
+        }
+        if (element != null) {
+            try {
+                File file = FileUtil.getFile(str);
+                if (file != null) {
+                    FileOutputStream os = new FileOutputStream(file);
+                    UtilXml.writeXmlDocument(element, os, encoding, omitXmlDeclaration, indent, indentAmount);
+                    os.close();
+                    return true;
+                } else {
+                    Debug.logError("Unable to create XML document " + str, module);
+                }
+            } catch (Exception e) {
+                Debug.logError(e, "Error while writing XML document " + str, module);
+            }
+        } else {
+            Debug.logError("Error while writing XML document " + str +
+                    ": Node is not an instance of Document or Element - " +
+                    node.getClass().getName(), module);
+        }
+        return false;
+    }
 }