Source Code Cross Referenced for FloatCollections.java in  » Library » Apache-commons-primitives-1.0 » org » apache » commons » collections » primitives » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Library » Apache commons primitives 1.0 » org.apache.commons.collections.primitives 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Header: /home/cvs/jakarta-commons/primitives/src/java/org/apache/commons/collections/primitives/FloatCollections.java,v 1.1 2003/10/29 20:07:54 rwaldhoff Exp $
003:         * ====================================================================
004:         * The Apache Software License, Version 1.1
005:         *
006:         * Copyright (c) 2003 The Apache Software Foundation.  All rights
007:         * reserved.
008:         *
009:         * Redistribution and use in source and binary forms, with or without
010:         * modification, are permitted provided that the following conditions
011:         * are met:
012:         *
013:         * 1. Redistributions of source code must retain the above copyright
014:         *    notice, this list of conditions and the following disclaimer.
015:         *
016:         * 2. Redistributions in binary form must reproduce the above copyright
017:         *    notice, this list of conditions and the following disclaimer in
018:         *    the documentation and/or other materials provided with the
019:         *    distribution.
020:         *
021:         * 3. The end-user documentation included with the redistribution, if
022:         *    any, must include the following acknowledgement:
023:         *       "This product includes software developed by the
024:         *        Apache Software Foundation (http://www.apache.org/)."
025:         *    Alternately, this acknowledgement may appear in the software itself,
026:         *    if and wherever such third-party acknowledgements normally appear.
027:         *
028:         * 4. The names "The Jakarta Project", "Commons", and "Apache Software
029:         *    Foundation" must not be used to endorse or promote products derived
030:         *    from this software without prior written permission. For written
031:         *    permission, please contact apache@apache.org.
032:         *
033:         * 5. Products derived from this software may not be called "Apache"
034:         *    nor may "Apache" appear in their names without prior written
035:         *    permission of the Apache Software Foundation.
036:         *
037:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
038:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
039:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
040:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
041:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
042:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
043:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
044:         * USE, DATA, OR PROFITS; OR BUSINESS FloatERRUPTION) HOWEVER CAUSED AND
045:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
046:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
047:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
048:         * SUCH DAMAGE.
049:         * ====================================================================
050:         *
051:         * This software consists of voluntary contributions made by many
052:         * individuals on behalf of the Apache Software Foundation.  For more
053:         * information on the Apache Software Foundation, please see
054:         * <http://www.apache.org/>.
055:         *
056:         */
057:
058:        package org.apache.commons.collections.primitives;
059:
060:        import org.apache.commons.collections.primitives.decorators.UnmodifiableFloatIterator;
061:        import org.apache.commons.collections.primitives.decorators.UnmodifiableFloatList;
062:        import org.apache.commons.collections.primitives.decorators.UnmodifiableFloatListIterator;
063:
064:        /**
065:         * This class consists exclusively of static methods that operate on or
066:         * return FloatCollections.
067:         * <p>
068:         * The methods of this class all throw a NullPoFloaterException if the 
069:         * provided collection is null.
070:         * 
071:         * @version $Revision: 1.1 $ $Date: 2003/10/29 20:07:54 $
072:         * 
073:         * @author Rodney Waldhoff 
074:         */
075:        public final class FloatCollections {
076:
077:            /**
078:             * Returns an unmodifiable FloatList containing only the specified element.
079:             * @param value the single value
080:             * @return an unmodifiable FloatList containing only the specified element.
081:             */
082:            public static FloatList singletonFloatList(float value) {
083:                // TODO: a specialized implementation of FloatList may be more performant
084:                FloatList list = new ArrayFloatList(1);
085:                list.add(value);
086:                return UnmodifiableFloatList.wrap(list);
087:            }
088:
089:            /**
090:             * Returns an unmodifiable FloatIterator containing only the specified element.
091:             * @param value the single value
092:             * @return an unmodifiable FloatIterator containing only the specified element.
093:             */
094:            public static FloatIterator singletonFloatIterator(float value) {
095:                return singletonFloatList(value).iterator();
096:            }
097:
098:            /**
099:             * Returns an unmodifiable FloatListIterator containing only the specified element.
100:             * @param value the single value
101:             * @return an unmodifiable FloatListIterator containing only the specified element.
102:             */
103:            public static FloatListIterator singletonFloatListIterator(
104:                    float value) {
105:                return singletonFloatList(value).listIterator();
106:            }
107:
108:            /**
109:             * Returns an unmodifiable version of the given non-null FloatList.
110:             * @param list the non-null FloatList to wrap in an unmodifiable decorator
111:             * @return an unmodifiable version of the given non-null FloatList
112:             * @throws NullPoFloaterException if the given FloatList is null
113:             * @see org.apache.commons.collections.primitives.decorators.UnmodifiableFloatList#wrap
114:             */
115:            public static FloatList unmodifiableFloatList(FloatList list)
116:                    throws NullPointerException {
117:                if (null == list) {
118:                    throw new NullPointerException();
119:                }
120:                return UnmodifiableFloatList.wrap(list);
121:            }
122:
123:            /**
124:             * Returns an unmodifiable version of the given non-null FloatIterator.
125:             * @param iter the non-null FloatIterator to wrap in an unmodifiable decorator
126:             * @return an unmodifiable version of the given non-null FloatIterator
127:             * @throws NullPoFloaterException if the given FloatIterator is null
128:             * @see org.apache.commons.collections.primitives.decorators.UnmodifiableFloatIterator#wrap
129:             */
130:            public static FloatIterator unmodifiableFloatIterator(
131:                    FloatIterator iter) {
132:                if (null == iter) {
133:                    throw new NullPointerException();
134:                }
135:                return UnmodifiableFloatIterator.wrap(iter);
136:            }
137:
138:            /**
139:             * Returns an unmodifiable version of the given non-null FloatListIterator.
140:             * @param iter the non-null FloatListIterator to wrap in an unmodifiable decorator
141:             * @return an unmodifiable version of the given non-null FloatListIterator
142:             * @throws NullPoFloaterException if the given FloatListIterator is null
143:             * @see org.apache.commons.collections.primitives.decorators.UnmodifiableFloatListIterator#wrap
144:             */
145:            public static FloatListIterator unmodifiableFloatListIterator(
146:                    FloatListIterator iter) {
147:                if (null == iter) {
148:                    throw new NullPointerException();
149:                }
150:                return UnmodifiableFloatListIterator.wrap(iter);
151:            }
152:
153:            /**
154:             * Returns an unmodifiable, empty FloatList.
155:             * @return an unmodifiable, empty FloatList.
156:             * @see #EMPTY_FLOAT_LIST
157:             */
158:            public static FloatList getEmptyFloatList() {
159:                return EMPTY_FLOAT_LIST;
160:            }
161:
162:            /**
163:             * Returns an unmodifiable, empty FloatIterator
164:             * @return an unmodifiable, empty FloatIterator.
165:             * @see #EMPTY_FLOAT_ITERATOR
166:             */
167:            public static FloatIterator getEmptyFloatIterator() {
168:                return EMPTY_FLOAT_ITERATOR;
169:            }
170:
171:            /**
172:             * Returns an unmodifiable, empty FloatListIterator
173:             * @return an unmodifiable, empty FloatListIterator.
174:             * @see #EMPTY_FLOAT_LIST_ITERATOR
175:             */
176:            public static FloatListIterator getEmptyFloatListIterator() {
177:                return EMPTY_FLOAT_LIST_ITERATOR;
178:            }
179:
180:            /**
181:             * An unmodifiable, empty FloatList
182:             * @see #getEmptyFloatList
183:             */
184:            public static final FloatList EMPTY_FLOAT_LIST = unmodifiableFloatList(new ArrayFloatList(
185:                    0));
186:
187:            /**
188:             * An unmodifiable, empty FloatIterator
189:             * @see #getEmptyFloatIterator
190:             */
191:            public static final FloatIterator EMPTY_FLOAT_ITERATOR = unmodifiableFloatIterator(EMPTY_FLOAT_LIST
192:                    .iterator());
193:
194:            /**
195:             * An unmodifiable, empty FloatListIterator
196:             * @see #getEmptyFloatListIterator
197:             */
198:            public static final FloatListIterator EMPTY_FLOAT_LIST_ITERATOR = unmodifiableFloatListIterator(EMPTY_FLOAT_LIST
199:                    .listIterator());
200:        }
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