initial import

src/id/iptek/utms/agent/model/FileReaderCacheObj.java

@@ -0,0 +1,75 @@
+package id.iptek.utms.agent.model;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.Serializable;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ *
+ * @author jakar
+ */
+public class FileReaderCacheObj implements Serializable {
+    
+    private File file;
+    private BufferedReader reader;
+    private final AtomicInteger currentReadRowNum = new AtomicInteger(0);
+
+    public FileReaderCacheObj() {
+    }
+
+    /**
+     * @return the file
+     */
+    public File getFile() {
+        return file;
+    }
+
+    /**
+     * @param file the file to set
+     */
+    public void setFile(File file) {
+        this.file = file;
+    }
+
+    /**
+     * @return the reader
+     */
+    public BufferedReader getReader() {
+        return reader;
+    }
+
+    /**
+     * @return the currentReadRowNum
+     */
+    public AtomicInteger getCurrentReadRowNum() {
+        return currentReadRowNum;
+    }
+    
+    public void pointToFile(File file) throws IOException {
+        if(file == null) {
+            throw new IllegalArgumentException("File cannot be null!");
+        }
+        if(!file.exists()) {
+            throw new IOException("File not exists!");
+        }
+        if(!file.canRead()) {
+            throw new IOException("File not readable!");
+        }
+        this.file = file;
+        this.reader = new BufferedReader(new FileReader(this.file));
+        this.currentReadRowNum.set(0);
+    }
+    
+    public void closeReader() throws IOException {
+        if(this.reader != null) {
+            this.reader.close();
+            this.file = null;
+            this.currentReadRowNum.set(0);
+        } else {
+            // ignore null reader
+        }
+    }
+}