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Java > Open Source Codes > org > jboss > axis > components > image > ImageIOFactory


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55
56 package org.jboss.axis.components.image;
57
58 import org.jboss.axis.AxisProperties;
59 import org.jboss.logging.Logger;
60
61 /**
62  * This class implements a factory to instantiate an ImageIO component.
63  *
64  * @author <a HREF="mailto:dims@yahoo.com">Davanum Srinivas</a>
65  * @version $Revision: 1.1.2.1 $ $Date: 2005/03/02 14:28:48 $
66  * @since 2.0
67  */
68 public class ImageIOFactory
69 {
70    private static Logger log = Logger.getLogger(ImageIOFactory.class.getName());
71
72    static
73    {
74       AxisProperties.setClassOverrideProperty(ImageIO.class, "axis.ImageIO");
75
76       // If the imageIO is not configured look for the following:
77 // 1. Try the JDK 1.4 classes
78 // 2. Try the JIMI classes
79 // 3. If all else fails, try the JDK 1.3 classes
80 AxisProperties.setClassDefaults(ImageIO.class,
81               new String JavaDoc[]{
82                  "org.jboss.axis.components.image.MerlinIO",
83                  "org.jboss.axis.components.image.JimiIO",
84                  "org.jboss.axis.components.image.JDK13IO",
85               });
86    }
87
88    /**
89     * Get the ImageIO implementation. This method follows a precedence:
90     * 1. Use the class defined by the System property axis.ImageIO.
91     * 2. If that isn't set, try instantiating MerlinIO, the JDK 1.4 ImageIO implementation.
92     * 3. If that fails try JimiIO, the JIMI ImageIO implementation.
93     * 4. If that fails, instantiate the limited JDK13IO implementation.
94     */
95    public static ImageIO getImageIO()
96    {
97       ImageIO imageIO = (ImageIO)AxisProperties.newInstance(ImageIO.class);
98
99       /**
100        * This shouldn't be needed, but seems to be a common feel-good:
101        */
102       if (imageIO == null)
103       {
104          imageIO = new JDK13IO();
105       }
106
107       log.debug("axis.ImageIO: " + imageIO.getClass().getName());
108       return imageIO;
109    }
110 }
111
112
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