Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / scratch / org / simantics / databoard / tests / StringUTFTest.java

diff --git a/bundles/org.simantics.databoard/scratch/org/simantics/databoard/tests/StringUTFTest.java b/bundles/org.simantics.databoard/scratch/org/simantics/databoard/tests/StringUTFTest.java
new file mode 100644 (file)
index 0000000..1a59ed3
--- /dev/null
+++ b/bundles/org.simantics.databoard/scratch/org/simantics/databoard/tests/StringUTFTest.java
@@ -0,0 +1,78 @@
+package org.simantics.databoard.tests;\r
+\r
+import java.io.ByteArrayInputStream;\r
+import java.io.ByteArrayOutputStream;\r
+import java.io.DataInputStream;\r
+import java.io.DataOutputStream;\r
+import java.nio.charset.Charset;\r
+\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.databoard.binding.StringBinding;\r
+\r
+/**\r
+ *\r
+ * @author Toni Kalajainen <toni.kalajainen@iki.fi>\r
+ */\r
+public class StringUTFTest {\r
+       \r
+       public static void main(String[] args) throws Exception {\r
+               \r
+               StringBinding b = Bindings.STRING;\r
+               int c = 10000;\r
+               String[] strs = new String[c];\r
+               for (int i=0; i<c; i++) strs[i] = (String) b.createRandom(i);\r
+               \r
+                               \r
+               {\r
+                       ByteArrayOutputStream baos = new ByteArrayOutputStream( 10*1024*1024 );\r
+                       DataOutputStream dos = new DataOutputStream( baos );            \r
+                       System.gc();\r
+                       long x = System.nanoTime();\r
+                       for (int i=0; i<c; i++) {\r
+                               dos.writeUTF(strs[i]);\r
+                       }\r
+                       long y = System.nanoTime() - x;\r
+                       System.out.println("DataOutputStream.writeUTF: "+y);\r
+\r
+                       byte[] data = baos.toByteArray();\r
+                       DataInputStream dis = new DataInputStream( new ByteArrayInputStream( data ) );\r
+                       x = System.nanoTime();\r
+                       for (int i=0; i<c; i++) {\r
+                               dis.readUTF();\r
+                       }\r
+                       y = System.nanoTime() - x;\r
+                       System.out.println("DataOutputStream.readUTF : "+y);\r
+               }\r
+               \r
+               {\r
+                       Charset cs = Charset.forName("UTF8");\r
+                       ByteArrayOutputStream baos = new ByteArrayOutputStream( 10*1024*1024 );\r
+                       DataOutputStream dos = new DataOutputStream( baos );            \r
+                       System.gc();\r
+                       long x = System.nanoTime();\r
+                       for (int i=0; i<c; i++) {\r
+                               byte[] data = strs[i].getBytes(cs);\r
+                               dos.writeInt(data.length);\r
+                               dos.write(data);\r
+                       }\r
+                       long y = System.nanoTime() - x;\r
+                       System.out.println("String#getBytes(cs)      : "+y);\r
+\r
+                       \r
+                       byte[] strData = new byte[1024];\r
+                       byte[] data = baos.toByteArray();\r
+                       DataInputStream dis = new DataInputStream( new ByteArrayInputStream( data ) );\r
+                       x = System.nanoTime();\r
+                       for (int i=0; i<c; i++) {\r
+                               int len = dis.readInt();\r
+                               dis.read(strData, 0, len);\r
+                               new String(strData, cs);\r
+                       }\r
+                       y = System.nanoTime() - x;\r
+                       System.out.println("new String(byte[], cs)   : "+y);\r
+               }\r
+               \r
+               \r
+       }\r
+\r
+}\r