[Pzfilereader-svn] SF.net SVN: pzfilereader: [230] trunk/PZFileReader/src/main/java/net/sf/ pzfilereader/brparse/BuffReaderPZDataSet.java

[<zep...@us...>]

Revision: 230
          http://svn.sourceforge.net/pzfilereader/?rev=230&view=rev
Author:   zepernick
Date:     2006-12-16 06:10:23 -0800 (Sat, 16 Dec 2006)

Log Message:
-----------


Added Paths:
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    trunk/PZFileReader/src/main/java/net/sf/pzfilereader/brparse/BuffReaderPZDataSet.java

Added: trunk/PZFileReader/src/main/java/net/sf/pzfilereader/brparse/BuffReaderPZDataSet.java
===================================================================
--- trunk/PZFileReader/src/main/java/net/sf/pzfilereader/brparse/BuffReaderPZDataSet.java	                        (rev 0)
+++ trunk/PZFileReader/src/main/java/net/sf/pzfilereader/brparse/BuffReaderPZDataSet.java	2006-12-16 14:10:23 UTC (rev 230)
@@ -0,0 +1,102 @@
+/*
+ * ObjectLab, http://www.objectlab.co.uk/open is supporting PZFileReader.
+ * 
+ * Based in London, we are world leaders in the design and development 
+ * of bespoke applications for the securities financing markets.
+ * 
+ * <a href="http://www.objectlab.co.uk/open">Click here to learn more</a>
+ *           ___  _     _           _   _          _
+ *          / _ \| |__ (_) ___  ___| |_| |    __ _| |__
+ *         | | | | '_ \| |/ _ \/ __| __| |   / _` | '_ \
+ *         | |_| | |_) | |  __/ (__| |_| |__| (_| | |_) |
+ *          \___/|_.__// |\___|\___|\__|_____\__,_|_.__/
+ *                   |__/
+ *
+ *                     www.ObjectLab.co.uk
+ *
+ * $Id: ColorProvider.java 74 2006-10-24 22:19:05Z benoitx $
+ * 
+ * Copyright 2006 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package net.sf.pzfilereader.brparse;
+
+import java.io.IOException;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.TreeMap;
+
+import net.sf.pzfilereader.DefaultDataSet;
+import net.sf.pzfilereader.structure.Row;
+
+public class BuffReaderPZDataSet extends DefaultDataSet{
+    private BuffReaderDelimPZParser brDelimPzParser;
+    
+    private BuffReaderFixedPZParser brFixedPzParser;
+    
+    public BuffReaderPZDataSet(final Map columnMD2, BuffReaderDelimPZParser brDelimPzParser) {
+        super(columnMD2);
+        //register the parser with the dataset so we can fetch rows from 
+        //the bufferedreader as needed
+        this.brDelimPzParser = brDelimPzParser;        
+    }
+    
+    public BuffReaderPZDataSet(final Map columnMD2, BuffReaderFixedPZParser brFixedPzParser) {
+        super(columnMD2);
+        //register the parser with the dataset so we can fetch rows from 
+        //the bufferedreader as needed
+        this.brFixedPzParser = brFixedPzParser;        
+    }
+    
+    public boolean next() {
+        try {
+            Row r = null;
+            
+            if (brDelimPzParser != null) {
+                brDelimPzParser.buildRow(this);
+            } else if (brFixedPzParser != null) {
+                brFixedPzParser.buildRow(this);
+            } else {
+                //this should not happen, throw exception
+                throw new RuntimeException("No parser available to fetch row");
+            }
+                
+            
+            if (r == null) {
+                setPointer(-1);
+                return false;
+            }
+                    
+            //make sure we have some MD
+            if (getColumnMD() == null) {
+                //create a new map so the user cannot change the internal 
+                //DataSet representation of the MD through the parser
+                setColumnMD(new LinkedHashMap(brDelimPzParser.getColumnMD()));
+            }   
+            
+            clearRows();
+            addRow(r);
+            
+            setPointer(0);
+            
+            return true;
+            
+        } catch(IOException ex) {
+            //TODO real logging here
+            ex.printStackTrace();
+        }
+       
+        return false;
+    }
+}


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