Source Code Cross Referenced for CapitalizeStringExpression.java in  » Report » pentaho-report » org » jfree » report » function » strings » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Report » pentaho report » org.jfree.report.function.strings 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * ===========================================
003:         * JFreeReport : a free Java reporting library
004:         * ===========================================
005:         *
006:         * Project Info:  http://reporting.pentaho.org/
007:         *
008:         * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
009:         *
010:         * This library is free software; you can redistribute it and/or modify it under the terms
011:         * of the GNU Lesser General Public License as published by the Free Software Foundation;
012:         * either version 2.1 of the License, or (at your option) any later version.
013:         *
014:         * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015:         * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016:         * See the GNU Lesser General Public License for more details.
017:         *
018:         * You should have received a copy of the GNU Lesser General Public License along with this
019:         * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020:         * Boston, MA 02111-1307, USA.
021:         *
022:         * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023:         * in the United States and other countries.]
024:         *
025:         * ------------
026:         * CapitalizeStringExpression.java
027:         * ------------
028:         * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
029:         */package org.jfree.report.function.strings;
030:
031:        import org.jfree.report.function.AbstractExpression;
032:
033:        /**
034:         * A expression that transforms all first letters of a given string into upper-case letters.
035:         *
036:         * @author Thomas Morgner
037:         */
038:        public class CapitalizeStringExpression extends AbstractExpression {
039:            /** The field name from where to read the string that should be capitalized. */
040:            private String field;
041:            /** A flag indicating that only the first word should be capitalized. */
042:            private boolean firstWordOnly;
043:
044:            /**
045:             * Default constructor.
046:             */
047:            public CapitalizeStringExpression() {
048:            }
049:
050:            /**
051:             * Returns, whether only the first word should be capitalized.
052:             *
053:             * @return true, if the first word should be capitalized, false if all words should be capitalized.
054:             */
055:            public boolean isFirstWordOnly() {
056:                return firstWordOnly;
057:            }
058:
059:            /**
060:             * Defines, whether only the first word should be capitalized.
061:             *
062:             * @param firstWordOnly true, if the first word should be capitalized, false if all words should be capitalized.
063:             */
064:            public void setFirstWordOnly(final boolean firstWordOnly) {
065:                this .firstWordOnly = firstWordOnly;
066:            }
067:
068:            /**
069:             * Returns the name of the datarow-column from where to read the string value.
070:             *
071:             * @return the field.
072:             */
073:            public String getField() {
074:                return field;
075:            }
076:
077:            /**
078:             * Defines the name of the datarow-column from where to read the string value.
079:             *
080:             * @param field the field.
081:             */
082:            public void setField(final String field) {
083:                this .field = field;
084:            }
085:
086:            /**
087:             * Capitalizes the string that has been read from the defined field.
088:             *
089:             * @return the value of the function.
090:             */
091:            public Object getValue() {
092:                final Object raw = getDataRow().get(getField());
093:                if (raw == null) {
094:                    return null;
095:                }
096:                final String text = String.valueOf(raw);
097:                final char[] textArray = text.toCharArray();
098:
099:                boolean startOfWord = true;
100:
101:                final int textLength = textArray.length;
102:                for (int i = 0; i < textLength; i++) {
103:                    final char c = textArray[i];
104:                    // we ignore the punctutation chars or any other possible extra chars
105:                    // for now. Words start at whitespaces ...
106:                    if (Character.isWhitespace(c)) {
107:                        startOfWord = true;
108:                    } else {
109:                        if (startOfWord == true) {
110:                            textArray[i] = Character.toTitleCase(c);
111:                        }
112:                        if (firstWordOnly) {
113:                            break;
114:                        }
115:                        startOfWord = false;
116:                    }
117:                }
118:                return new String(textArray);
119:            }
120:        }
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