diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/CORBA/SimpleCommunication/communication/DirectTest.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/CORBA/SimpleCommunication/communication/DirectTest.java | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/CORBA/SimpleCommunication/communication/DirectTest.java b/gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/CORBA/SimpleCommunication/communication/DirectTest.java new file mode 100644 index 000000000..843530de5 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/CORBA/SimpleCommunication/communication/DirectTest.java @@ -0,0 +1,344 @@ +/* DirectTest.java -- + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.classpath.examples.CORBA.SimpleCommunication.communication; + +import org.omg.CORBA.BAD_OPERATION; +import org.omg.CORBA.ByteHolder; +import org.omg.CORBA.DoubleHolder; +import org.omg.CORBA.ORB; +import org.omg.CORBA.ShortHolder; +import org.omg.CORBA.StringHolder; +import org.omg.CORBA.UserException; + +import java.io.File; +import java.io.FileReader; +import java.io.IOException; + +/** + * This code uses CORBA to call various methods of the remote object, + * passing data structures in both directions. It finds the server by + * reading the IOR.txt file that must be present in the folder, + * where the program has been started. + * + * The IOR.txt file is written by the server + * {@link gnu.classpath.examples.CORBA.SimpleCommunication.DemoServer}. + * The server should be reachable over Internet, unless blocked by + * security tools. + * + * This code is tested for interoperability with Sun Microsystems + * java implementation 1.4.2 (08.b03). Server, client of both can + * be started either on Sun's or on Classpath CORBA implementation, + * in any combinations. + * + * BE SURE TO START THE SERVER BEFORE STARTING THE CLIENT. + * + * This version uses direct casting. This is the most convenient + * method, but it is normally used together with the IDL compiler. + * + * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) + */ +public class DirectTest +{ + /* + * The IOR.txt file, used to find the server and the object on the server. is written when starting the accompanying + */ + public static final String IOR_FILE = "IOR.txt"; + + /** + * The invocation target. + */ + DemoTester object; + + /** + * Get the object reference. + */ + public static void main(String[] args) + { + try + { + ORB orb = org.omg.CORBA.ORB.init(args, null); + + File f = new File(IOR_FILE); + char[] c = new char[ (int) f.length() ]; + FileReader fr = new FileReader(f); + fr.read(c); + fr.close(); + + String ior = new String(c); + DirectTest we = new DirectTest(); + we.object = (DemoTester) orb.string_to_object(ior); + we.Demo(); + orb.shutdown(false); + } + catch (IOException ex) + { + System.out.println("Cannot find or read the IOR file " + + "in the current folder" + ); + ex.printStackTrace(); + } + } + + /** Run all demos. */ + public void Demo() + { + testHello(); + testField(); + testParameters(); + testStringArray(); + testStructure(); + testWideNarrowStrings(); + testTree(); + testSystemException(); + testUserException(); + } + + /** + * Test the field getter/setter. + */ + public void testField() + { + System.out.println("***** Test the remote field getter/setter."); + System.out.println("The field value is now " + object.theField()); + System.out.println("Setting it to 555"); + object.theField(555); + System.out.println("The field value is now " + object.theField()); + } + + /** The simple invocation of the parameterless remote method. */ + public void testHello() + { + System.out.println("***** Say hello (see the server console)."); + object.sayHello(); + } + + /** + * Test passing multiple parameters in both directions. + */ + public void testParameters() + { + System.out.println("***** Pass multiple parameters."); + + // Holder classes are required to simulate passing + // "by reference" (modification is returned back to the server). + ByteHolder a_byte = new ByteHolder((byte) 0); + ShortHolder a_short = new ShortHolder((short) 3); + StringHolder a_string = new StringHolder("[string 4]"); + + // This is an 'out' parameter; the value must not be passed to servant. + DoubleHolder a_double = new DoubleHolder(56.789); + + int returned = object.passSimple(a_byte, 2, a_short, a_string, a_double); + + System.out.println(" Returned value " + returned); + System.out.println(" Returned parameters: "); + System.out.println(" octet " + a_byte.value); + System.out.println(" short " + a_short.value); + System.out.println(" string '" + a_string.value+"'"); + System.out.println(" double " + a_double.value); + } + + /** + * Test passing the string array, flexible size. + */ + public void testStringArray() + { + System.out.println("***** Pass string array."); + + String[] x = new String[] { "one", "two" }; + + // The array is passed as CORBA sequence, variable size is supported. + String[] y = object.passStrings(x); + + for (int i = 0; i < y.length; i++) + { + System.out.println(" Passed " + x [ i ] + ", returned: " + y [ i ]); + } + } + + /** + * Test passing the structures. + */ + public void testStructure() + { + System.out.println("***** Pass structure"); + + StructureToPass arg = new StructureToPass(); + arg.a = "A"; + arg.b = "B"; + + StructureToReturn r = object.passStructure(arg); + + System.out.println(" Fields of the returned structure:"); + + System.out.println(" c: " + r.c); + System.out.println(" n: " + r.n); + + // The field r.arra is declared as the fixed size CORBA array. + System.out.println(" r[0]: " + r.arra [ 0 ]); + System.out.println(" r[1]: " + r.arra [ 1 ]); + System.out.println(" r[3]: " + r.arra [ 2 ]); + } + + /** + * Test catching the system exception, thrown on the remote side. + */ + public void testSystemException() + { + System.out.println("**** Test system exception:"); + try + { + // Negative parameter = system exception. + object.throwException(-55); + } + catch (BAD_OPERATION ex) + { + System.out.println(" The expected BAD_OPERATION, minor code " + + ex.minor + ", has been thrown on remote side." + ); + } + catch (UserException uex) + { + throw new InternalError(); + } + } + + /** + * Test passing the tree structure. Any shape of the tree is + * supported without rewriting the code. + */ + public void testTree() + { + // Manually create the tree of nodes: + // Root + // +-- a + // | + // +-- b + // +-- ba + // | | + // | +-- bac + // | + // +-- bb + System.out.println("***** Pass and return the tree."); + + TreeNode n = nod("Root"); + + n.children = new TreeNode[] { nod("a"), nod("b") }; + n.children [ 1 ].children = new TreeNode[] { nod("ba"), nod("bb") }; + n.children [ 1 ].children [ 0 ].children = new TreeNode[] { nod("bac") }; + + TreeNodeHolder nh = new TreeNodeHolder(n); + + // The server should add '++' to each TreeNode name. + object.passTree(nh); + + // Convert the returned tree to some strig representation. + StringBuilder img = new StringBuilder(); + getImage(img, nh.value); + + System.out.println("Returned tree: " + img.toString()); + } + + /** + * Test catching the user exception, thrown on the remote side. + */ + public void testUserException() + { + System.out.println("**** Test user exception:"); + try + { + // The user exception contains one user-defined field that will + // be initialised to the passed parameter. + object.throwException(123); + throw new InternalError(); + } + catch (WeThrowThisException uex) + { + System.out.println(" The user exception with field " + uex.ourField + + ", has been thrown on remote side." + ); + } + } + + /** + * Passes wide (UTF-16) string and narrow (ISO8859_1) string. + * @see gnu.CORBA.GIOP.CharSets_OSF for supported and default + * encodings. + */ + public void testWideNarrowStrings() + { + System.out.println("**** Test 8 bit and 16 bit char strings"); + + String r = object.passCharacters("wide string", "narrow string"); + System.out.println(" returned: '" + r + "'"); + } + + /** + * Get the string representation of the passed tree. + * @param b the string buffer to accumulate the representation. + * @param n the tree (root TreeNode). + */ + private void getImage(StringBuilder b, TreeNode n) + { + b.append(n.name); + b.append(": ("); + + for (int i = 0; i < n.children.length; i++) + { + getImage(b, n.children [ i ]); + b.append(' '); + } + b.append(") "); + } + + /** + * Create a TreeNode with the given header. + * + * @param hdr the TreeNode header. + * @return the created TreeNode. + */ + private TreeNode nod(String hdr) + { + TreeNode n = new TreeNode(); + n.children = new TreeNode[ 0 ]; + n.name = hdr; + + return n; + } +} |