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-rw-r--r--java/FileExample.java94
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1import com.xagasoft.gats.*;
2
3import java.io.FileInputStream;
4import java.io.FileOutputStream;
5
6import java.io.FileNotFoundException;
7import java.io.IOException;
8
9class FileExample
10{
11 public static void writeFile()
12 {
13 System.out.println();
14 System.out.println("Creating a new gats object tree...");
15
16 GatsDictionary root = new GatsDictionary();
17
18 // Automatically determine the type of gats object and insert it
19 // for you
20 root.put("String", "This is a string");
21 root.put("Integer", 445 );
22 root.put("Float", 44.5 );
23 root.put("Boolean", true );
24
25 // Ensure the correct type and insert it yourself
26 root.put("ExplicitFloat", new GatsFloat( 44 ) );
27
28 GatsList lst = new GatsList();
29 lst.add( new GatsString("Hello") );
30 lst.add( new GatsInteger( 314159 ) );
31 lst.add( new GatsFloat( 3.14159 ) );
32
33 root.put("List", lst );
34
35 GatsDictionary subDict = new GatsDictionary();
36 subDict.put("name", "Bob");
37 root.put("Dictionary", subDict );
38
39 try
40 {
41 System.out.println("Writing tree to file: test.gats");
42 FileOutputStream fos = new FileOutputStream("test.gats");
43 GatsOutputStream gos = new GatsOutputStream( fos );
44 int iBytes = gos.writeObject( root );
45 System.out.println("Wrote " + iBytes + " total bytes.");
46 }
47 catch( FileNotFoundException e )
48 {
49 System.out.println("Error opening file.");
50 }
51 catch( IOException e )
52 {
53 System.out.println("Error writing data.");
54 }
55 }
56
57 public static void readFile()
58 {
59 System.out.println();
60 try
61 {
62 System.out.println("Reading in gats file: test.gats");
63 FileInputStream fis = new FileInputStream("test.gats");
64 GatsInputStream gis = new GatsInputStream( fis );
65 GatsObject obj = gis.readObject();
66 System.out.println("Full object: " + obj );
67
68 GatsDictionary root = (GatsDictionary)obj;
69 System.out.println("An integer: " + root.getInt("Integer") );
70
71 // This is a little akward since getString returns a byte array,
72 // so if you want to use the data as a java string you have to build
73 // the string object yourself.
74 System.out.println("Sub string: " + new String(
75 root.getDict("Dictionary").getString("name") ) );
76 }
77 catch( FileNotFoundException e )
78 {
79 System.out.println("Error opening file.");
80 }
81 catch( IOException e )
82 {
83 System.out.println("Error reading data.");
84 }
85 }
86
87 public static void main( String args[] )
88 {
89 System.out.println("GATS file example.");
90 writeFile();
91 readFile();
92 }
93}
94