From 3d982813b34f6f230baf4a467cdc37ec92a77595 Mon Sep 17 00:00:00 2001
From: netconomy <netconomy@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 17 Aug 2007 06:10:56 +0000
Subject: Performance

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@167 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../egiz/pdfas/impl/input/TextDataSourceImpl.java  | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/main/java/at/gv/egiz/pdfas/impl/input/TextDataSourceImpl.java

(limited to 'src/main/java/at/gv/egiz/pdfas/impl/input/TextDataSourceImpl.java')

diff --git a/src/main/java/at/gv/egiz/pdfas/impl/input/TextDataSourceImpl.java b/src/main/java/at/gv/egiz/pdfas/impl/input/TextDataSourceImpl.java
new file mode 100644
index 0000000..b259a3e
--- /dev/null
+++ b/src/main/java/at/gv/egiz/pdfas/impl/input/TextDataSourceImpl.java
@@ -0,0 +1,82 @@
+/**
+ * 
+ */
+package at.gv.egiz.pdfas.impl.input;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.io.UnsupportedEncodingException;
+
+import at.gv.egiz.pdfas.framework.input.TextDataSource;
+
+/**
+ * A TextDataSource that keeps the text in memory.
+ * 
+ * <p>
+ * Keeping the text in memory is fast as long as the text is short, but may
+ * result in bad memory performance when the text is longer. Use a FileBased
+ * TextDataSource instead if memory is an issue.
+ * </p>
+ * 
+ * @author wprinz
+ */
+public class TextDataSourceImpl implements TextDataSource
+{
+  /**
+   * The text.
+   */
+  protected String text = null;
+
+  /**
+   * Constructor that sets the text.
+   * 
+   * @param text
+   *          The text.
+   */
+  public TextDataSourceImpl(String text)
+  {
+    this.text = text;
+  }
+
+  /**
+   * @see at.gv.egiz.pdfas.framework.input.TextDataSource#getText()
+   */
+  public String getText()
+  {
+    return this.text;
+  }
+
+  /**
+   * @see at.gv.egiz.pdfas.framework.input.DataSource#createInputStream()
+   */
+  public InputStream createInputStream()
+  {
+    try
+    {
+      byte[] data = getText().getBytes("UTF-8");
+      // PERF: if memory is an issue (e.g. in web), use a FileBased TextDataSource instead.
+      return new ByteArrayInputStream(data);
+    }
+    catch (UnsupportedEncodingException e)
+    {
+      throw new RuntimeException(e);
+    }
+  }
+
+  /**
+   * @see at.gv.egiz.pdfas.framework.input.DataSource#getLength()
+   */
+  public int getLength()
+  {
+    try
+    {
+      byte[] data = getText().getBytes("UTF-8");
+      return data.length;
+    }
+    catch (UnsupportedEncodingException e)
+    {
+      throw new RuntimeException(e);
+    }
+  }
+
+}
-- 
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