Source Code Cross Referenced for ProviderUtils.java in  » Web-Services » wsif » org » apache » wsif » providers » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Services » wsif » org.apache.wsif.providers 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * The Apache Software License, Version 1.1
003:         *
004:         *
005:         * Copyright (c) 2002 The Apache Software Foundation.  All rights 
006:         * reserved.
007:         *
008:         * Redistribution and use in source and binary forms, with or without
009:         * modification, are permitted provided that the following conditions
010:         * are met:
011:         *
012:         * 1. Redistributions of source code must retain the above copyright
013:         *    notice, this list of conditions and the following disclaimer. 
014:         *
015:         * 2. Redistributions in binary form must reproduce the above copyright
016:         *    notice, this list of conditions and the following disclaimer in
017:         *    the documentation and/or other materials provided with the
018:         *    distribution.
019:         *
020:         * 3. The end-user documentation included with the redistribution,
021:         *    if any, must include the following acknowledgment:  
022:         *       "This product includes software developed by the
023:         *        Apache Software Foundation (http://www.apache.org/)."
024:         *    Alternately, this acknowledgment may appear in the software itself,
025:         *    if and wherever such third-party acknowledgments normally appear.
026:         *
027:         * 4. The names "WSIF" and "Apache Software Foundation" must
028:         *    not be used to endorse or promote products derived from this
029:         *    software without prior written permission. For written 
030:         *    permission, please contact apache@apache.org.
031:         *
032:         * 5. Products derived from this software may not be called "Apache",
033:         *    nor may "Apache" appear in their name, without prior written
034:         *    permission of the Apache Software Foundation.
035:         *
036:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
040:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047:         * SUCH DAMAGE.
048:         * ====================================================================
049:         *
050:         * This software consists of voluntary contributions made by many
051:         * individuals on behalf of the Apache Software Foundation and was
052:         * originally based on software copyright (c) 2001, 2002, International
053:         * Business Machines, Inc., http://www.apache.org.  For more
054:         * information on the Apache Software Foundation, please see
055:         * <http://www.apache.org/>.
056:         */
057:
058:        package org.apache.wsif.providers;
059:
060:        import java.lang.reflect.Array;
061:
062:        import org.apache.wsif.WSIFException;
063:
064:        /**
065:         * A class of static utility methods for use across multiple providers
066:         * 
067:         * @author Owen Burroughs <owenb@apache.org>
068:         */
069:        public class ProviderUtils {
070:
071:            /**
072:             * Convert an array of any dimensions containing only Strings of length 1, to an array
073:             * of java.lang.Characters which has the same dimensions.
074:             * @param obj The array of Strings
075:             * @return The Character array
076:             * @exception A WSIFException thrown if the conversion fails for any reason.
077:             */
078:            public static Object stringArrayToCharacterArray(Object obj)
079:                    throws WSIFException {
080:                return stringArrayToCharacterArray(obj, null);
081:            }
082:
083:            /**
084:             * Convert an array of any dimensions containing only Strings of length 1, to an array
085:             * of java.lang.Characters which has the same dimensions.
086:             * @param obj The array of Strings
087:             * @param ret temporary array used in recursion. The first call should be passed null.
088:             * @return The Character array
089:             * @exception A WSIFException thrown if the conversion fails for any reason.
090:             */
091:            protected static Object stringArrayToCharacterArray(Object obj,
092:                    Object ret) throws WSIFException {
093:                if (obj.getClass().isArray()) {
094:                    Object[] objs = (Object[]) obj;
095:                    ret = new Object[objs.length];
096:                    for (int i = 0; i < objs.length; i++) {
097:                        Object temp = stringArrayToCharacterArray(objs[i],
098:                                ((Object[]) ret)[i]);
099:                        if (i == 0) {
100:                            Class tempc = temp.getClass();
101:                            ret = Array.newInstance(tempc, objs.length);
102:                        }
103:                        ((Object[]) ret)[i] = temp;
104:                    }
105:                    return ret;
106:                } else if (obj instanceof  String) {
107:                    String s = (String) obj;
108:                    if (s.length() == 1) {
109:                        ret = new Character(s.charAt(0));
110:                        return ret;
111:                    } else {
112:                        throw new WSIFException(
113:                                "String is longer than 1 character");
114:                    }
115:                } else {
116:                    throw new WSIFException(
117:                            "Array entry is not a String or another array");
118:                }
119:            }
120:
121:            /**
122:             * Convert an array of any dimensions containing only Strings of length 1, to an array
123:             * of chars which has the same dimensions.
124:             * @param obj The array of Strings
125:             * @return The char array
126:             * @exception A WSIFException thrown if the conversion fails for any reason.
127:             */
128:            public static Object stringArrayToCharArray(Object obj)
129:                    throws WSIFException {
130:                return stringArrayToCharArray(obj, null);
131:            }
132:
133:            /**
134:             * Convert an array of any dimensions containing only Strings of length 1, to an array
135:             * of chars which has the same dimensions.
136:             * @param obj The array of Strings
137:             * @param ret temporary array used in recursion. The first call should be passed null.
138:             * @return The char array
139:             * @exception A WSIFException thrown if the conversion fails for any reason.
140:             */
141:            protected static Object stringArrayToCharArray(Object obj,
142:                    Object ret) throws WSIFException {
143:                if (obj.getClass().isArray()) {
144:                    Object[] objs = (Object[]) obj;
145:                    ret = new Object[objs.length];
146:                    for (int i = 0; i < objs.length; i++) {
147:                        Object temp = stringArrayToCharArray(objs[i],
148:                                ((Object[]) ret)[i]);
149:                        if (i == 0) {
150:                            Class tempc = temp.getClass();
151:                            ret = Array.newInstance(tempc, objs.length);
152:                        }
153:                        ((Object[]) ret)[i] = temp;
154:                        if (temp instanceof  Character && (i == objs.length - 1)) {
155:                            char[] tempca = new char[objs.length];
156:                            for (int j = 0; j < objs.length; j++) {
157:                                tempca[j] = ((Character[]) ret)[j].charValue();
158:                            }
159:                            ret = tempca;
160:                        }
161:                    }
162:                    return ret;
163:                } else if (obj instanceof  String) {
164:                    String s = (String) obj;
165:                    if (s.length() == 1) {
166:                        ret = new Character(s.charAt(0));
167:                        return ret;
168:                    } else {
169:                        throw new WSIFException(
170:                                "String is longer than 1 character");
171:                    }
172:                } else {
173:                    throw new WSIFException(
174:                            "Array entry is not a String or another array");
175:                }
176:            }
177:
178:            /**
179:             * Convert an array of java.lang.Characters of any dimensions to an equivalent array 
180:             * of java.lang.Strings which has the same dimensions.
181:             * @param obj The array of Characters
182:             * @return The array of Strings
183:             * @exception A WSIFException thrown if the conversion fails for any reason.
184:             */
185:            public static Object characterArrayToStringArray(Object obj)
186:                    throws WSIFException {
187:                return characterArrayToStringArray(obj, null);
188:            }
189:
190:            /**
191:             * Convert an array of java.lang.Characters of any dimensions to an equivalent array 
192:             * of java.lang.Strings which has the same dimensions.
193:             * @param obj The array of Characters
194:             * @param ret temporary array used in recursion. The first call should be passed null.
195:             * @return The array of Strings
196:             * @exception A WSIFException thrown if the conversion fails for any reason.
197:             */
198:            protected static Object characterArrayToStringArray(Object obj,
199:                    Object ret) throws WSIFException {
200:                if (obj.getClass().isArray()) {
201:                    Object[] objs = (Object[]) obj;
202:                    ret = new Object[objs.length];
203:                    for (int i = 0; i < objs.length; i++) {
204:                        Object temp = characterArrayToStringArray(objs[i],
205:                                ((Object[]) ret)[i]);
206:                        if (i == 0) {
207:                            Class tempc = temp.getClass();
208:                            ret = Array.newInstance(tempc, objs.length);
209:                        }
210:                        ((Object[]) ret)[i] = temp;
211:                    }
212:                    return ret;
213:                } else if (obj instanceof  Character) {
214:                    String s = obj.toString();
215:                    return s;
216:                } else {
217:                    throw new WSIFException(
218:                            "Array entry is not a Character or another array");
219:                }
220:            }
221:
222:            /**
223:             * Convert an array of chars of any dimensions to an equivalent array 
224:             * of java.lang.Strings which has the same dimensions.
225:             * @param obj The array of chars
226:             * @return The array of Strings
227:             * @exception A WSIFException thrown if the conversion fails for any reason.
228:             */
229:            public static Object charArrayToStringArray(Object obj)
230:                    throws WSIFException {
231:                return charArrayToStringArray(obj, null);
232:            }
233:
234:            /**
235:             * Convert an array of chars of any dimensions to an equivalent array 
236:             * of java.lang.Strings which has the same dimensions.
237:             * @param obj The array of chars
238:             * @param ret temporary array used in recursion. The first call should be passed null.
239:             * @return The array of Strings
240:             * @exception A WSIFException thrown if the conversion fails for any reason.
241:             */
242:            protected static Object charArrayToStringArray(Object obj,
243:                    Object ret) throws WSIFException {
244:                if (obj.getClass().isArray()) {
245:                    if (obj instanceof  char[]) {
246:                        char[] ca = (char[]) obj;
247:                        Character[] chra = new Character[ca.length];
248:                        for (int j = 0; j < ca.length; j++) {
249:                            chra[j] = new Character(ca[j]);
250:                        }
251:                        obj = chra;
252:                    }
253:                    Object[] objs = (Object[]) obj;
254:                    ret = new Object[objs.length];
255:                    for (int i = 0; i < objs.length; i++) {
256:                        Object temp = charArrayToStringArray(objs[i],
257:                                ((Object[]) ret)[i]);
258:                        if (i == 0) {
259:                            Class tempc = temp.getClass();
260:                            ret = Array.newInstance(tempc, objs.length);
261:                        }
262:                        ((Object[]) ret)[i] = temp;
263:                    }
264:                    return ret;
265:                } else if (obj instanceof  Character) {
266:                    String s = obj.toString();
267:                    return s;
268:                } else {
269:                    throw new WSIFException(
270:                            "Array entry is not a char or another array");
271:                }
272:            }
273:
274:            /**
275:             * Convert a String to a Character. If the String is longer than one character
276:             * this method will return null;
277:             * @param str The String
278:             * @return The Character or null if the String was longer than one character	 
279:             */
280:            public static Character stringToCharacter(String str) {
281:                if (str.length() != 1)
282:                    return null;
283:                return new Character(str.charAt(0));
284:            }
285:
286:            /**
287:             * Returns a default Object value for a given Class. If the Class is a primitive type
288:             * the method will return the default value for that primitive type wrapped up in its
289:             * object form. For example, invoking the method with int.class will return a new 
290:             * java.lang.Integer with an int value of 0. If the Class does not represent a
291:             * primitive type then null will be returned.
292:             * @param cls The Class
293:             * @return The default object value
294:             */
295:            public static Object getDefaultObject(Class cls) {
296:                if (cls == null) {
297:                    return null;
298:                } else if (cls.isPrimitive()) {
299:                    if (cls.getName().equals("int")) {
300:                        return new Integer(0);
301:                    } else if (cls.getName().equals("char")) {
302:                        return new Character('0');
303:                    } else if (cls.getName().equals("long")) {
304:                        return new Long(0);
305:                    } else if (cls.getName().equals("short")) {
306:                        short s = 0;
307:                        return new Short(s);
308:                    } else if (cls.getName().equals("double")) {
309:                        return new Double(0);
310:                    } else if (cls.getName().equals("boolean")) {
311:                        return new Boolean(false);
312:                    } else if (cls.getName().equals("byte")) {
313:                        byte b = 0;
314:                        return new Byte(b);
315:                    } else {
316:                        return new Float(0);
317:                    }
318:                } else {
319:                    return null;
320:                }
321:            }
322:        }
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