Initial revision

[mir.git] / source / mir / misc / XslStyleCache.java

diff --git a/source/mir/misc/XslStyleCache.java b/source/mir/misc/XslStyleCache.java
new file mode 100755 (executable)
index 0000000..b0bfa42
--- /dev/null
+++ b/source/mir/misc/XslStyleCache.java
@@ -0,0 +1,93 @@
+package mir.misc;
+
+import java.io.IOException;
+
+import com.icl.saxon.PreparedStyleSheet;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import com.icl.saxon.trax.Transformer;
+
+import java.util.Hashtable;
+
+/**
+ * Title:
+ * Description:
+ * Copyright:    Copyright (c) 2001
+ * Company:
+ * @author
+ * @version 1.0
+ */
+
+
+public class XslStyleCache {
+
+  private static Hashtable cache;
+  private static XslStyleCache single = new XslStyleCache();
+
+
+  /**
+   * XSLStyleCache constructor comment.
+  */
+  private XslStyleCache() {
+    cache = new Hashtable();
+  }
+
+  /**
+   * singleton constructor
+   */
+  private static synchronized XslStyleCache getInstance() {
+    return single;
+  }
+
+
+  /**
+   * Clear Cache
+   */
+  public static void clear() {
+    cache.clear();
+  }
+
+  /**
+   * This method was created in VisualAge.
+   * @return
+   * @param key java.lang.String
+   */
+  public static PreparedStyleSheet getPreparedStyleSheet( String key )
+    throws SAXException {
+
+    PreparedStyleSheet styleSheet = (PreparedStyleSheet)single.cache.get( key );
+    try {
+      if ( styleSheet == null ) {
+        styleSheet = new PreparedStyleSheet();
+        styleSheet.prepare( InputSourceResolver.resolve( key ) );
+        single.cache.put( key, styleSheet );
+      }
+    } catch ( IOException ex ) {
+      throw new SAXException( "tunneld IOExcpetion:" + ex.getMessage() );
+    }
+
+    return styleSheet;
+  }
+
+  /**
+   * This method was created in VisualAge.
+   * @return
+   * @param key java.lang.String
+   */
+  public static Transformer getTransformer( String key ){
+
+    PreparedStyleSheet styleSheet = (PreparedStyleSheet)single.cache.get( key );
+    try {
+      if ( styleSheet == null ) {
+        styleSheet = new PreparedStyleSheet();
+        styleSheet.prepare( InputSourceResolver.resolve( key ) );
+        single.cache.put( key, styleSheet );
+      }
+    } catch ( IOException ex ) {
+      //throw new SAXException( "tunneld IOExcpetion:" + ex.getMessage() );
+    } catch (SAXException ex) {}
+
+    return styleSheet.newTransformer();
+  }
+
+}
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