INTEGRATION: CWS sdk02 (1.1.2); FILE ADDED

2003/05/09 11:44:00 jsc 1.1.2.1: #109045# insert new and remove example zip file

1 files changed, 122 insertions, 0 deletions

diff --git a/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java b/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java
new file mode 100644
index 000000000000..233745622d95
--- /dev/null
+++ b/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java
@@ -0,0 +1,122 @@
+
+import com.sun.star.lang.XSingleServiceFactory;
+import com.sun.star.lang.XServiceInfo;
+import com.sun.star.lang.XInitialization;
+import com.sun.star.lang.XMultiServiceFactory;
+import com.sun.star.beans.XPropertySet;
+import com.sun.star.uno.XInterface;
+import com.sun.star.uno.Any;
+import com.sun.star.uno.UnoRuntime;
+
+import java.lang.reflect.Constructor;
+
+//
+// purpose of this class is to provide a service factory that instantiates
+// the services only once (as long as this factory itself exists)
+// and returns only reference to that instance.
+//
+
+public class OneInstanceFactory implements
+        XSingleServiceFactory,
+        XServiceInfo
+{
+    Class       aMyClass;
+    String      aSvcImplName;
+    String[]    aSupportedSvcNames;
+    XInterface  xInstantiatedService;
+    XMultiServiceFactory    xMultiFactory;
+
+    public OneInstanceFactory(
+            Class       aMyClass,
+            String      aSvcImplName,
+            String[]    aSupportedSvcNames,
+            XMultiServiceFactory    xMultiFactory )
+    {
+        this.aMyClass           = aMyClass;
+        this.aSvcImplName       = aSvcImplName;
+        this.aSupportedSvcNames = aSupportedSvcNames;
+        this.xMultiFactory      = xMultiFactory;
+        xInstantiatedService = null;
+    }
+
+    //**********************
+    // XSingleServiceFactory
+    //**********************
+    public Object createInstance()
+        throws com.sun.star.uno.Exception,
+               com.sun.star.uno.RuntimeException
+    {
+        if (xInstantiatedService == null)
+        {
+            //!! the here used services all have exact one constructor!!
+            Constructor [] aCtor = aMyClass.getConstructors();
+            try {
+                xInstantiatedService = (XInterface) aCtor[0].newInstance( null );
+            }
+            catch( Exception e ) {
+            }
+
+            //!! workaround for services not always being created
+            //!! via 'createInstanceWithArguments'
+            XInitialization xIni = (XInitialization) UnoRuntime.queryInterface(
+                XInitialization.class, createInstance());
+            if (xIni != null)
+            {
+                Object[] aArguments = new Object[]{ null, null };
+                if (xMultiFactory != null)
+                {
+                    XPropertySet xPropSet = (XPropertySet) UnoRuntime.queryInterface(
+                        XPropertySet.class ,  xMultiFactory.createInstance(
+                            "com.sun.star.linguistic2.LinguProperties" ) );
+                    aArguments[0] = xPropSet;
+                }
+                xIni.initialize( aArguments );
+            }
+        }
+        return xInstantiatedService;
+    }
+
+    public Object createInstanceWithArguments( Object[] aArguments )
+        throws com.sun.star.uno.Exception,
+               com.sun.star.uno.RuntimeException
+    {
+        if (xInstantiatedService == null)
+        {
+            XInitialization xIni = (XInitialization) UnoRuntime.queryInterface(
+                XInitialization.class, createInstance());
+            if (xIni != null)
+                xIni.initialize( aArguments );
+        }
+        return xInstantiatedService;
+    }
+
+
+    //*************
+    // XServiceInfo
+    //*************
+    public boolean supportsService( String aServiceName )
+        throws com.sun.star.uno.RuntimeException
+    {
+        boolean bFound = false;
+        int nCnt = aSupportedSvcNames.length;
+        for (int i = 0;  i < nCnt && !bFound;  ++i)
+        {
+            if (aServiceName.equals( aSupportedSvcNames[i] ))
+                bFound = true;
+        }
+        return bFound;
+    }
+
+    public String getImplementationName()
+        throws com.sun.star.uno.RuntimeException
+    {
+        return aSvcImplName;
+    }
+
+    public String[] getSupportedServiceNames()
+        throws com.sun.star.uno.RuntimeException
+    {
+        return aSupportedSvcNames;
+    }
+};
+