Source Code Cross Referenced for Result.java in  » EJB-Server-GlassFish » appserv-jstl » javax » servlet » jsp » jstl » sql » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server GlassFish » appserv jstl » javax.servlet.jsp.jstl.sql 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         * 
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         * 
006:         * Portions Copyright Apache Software Foundation.
007:         * 
008:         * The contents of this file are subject to the terms of either the GNU
009:         * General Public License Version 2 only ("GPL") or the Common Development
010:         * and Distribution License("CDDL") (collectively, the "License").  You
011:         * may not use this file except in compliance with the License. You can obtain
012:         * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
013:         * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
014:         * language governing permissions and limitations under the License.
015:         * 
016:         * When distributing the software, include this License Header Notice in each
017:         * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
018:         * Sun designates this particular file as subject to the "Classpath" exception
019:         * as provided by Sun in the GPL Version 2 section of the License file that
020:         * accompanied this code.  If applicable, add the following below the License
021:         * Header, with the fields enclosed by brackets [] replaced by your own
022:         * identifying information: "Portions Copyrighted [year]
023:         * [name of copyright owner]"
024:         * 
025:         * Contributor(s):
026:         * 
027:         * If you wish your version of this file to be governed by only the CDDL or
028:         * only the GPL Version 2, indicate your decision by adding "[Contributor]
029:         * elects to include this software in this distribution under the [CDDL or GPL
030:         * Version 2] license."  If you don't indicate a single choice of license, a
031:         * recipient has the option to distribute your version of this file under
032:         * either the CDDL, the GPL Version 2 or to extend the choice of license to
033:         * its licensees as provided above.  However, if you add GPL Version 2 code
034:         * and therefore, elected the GPL Version 2 license, then the option applies
035:         * only if the new code is made subject to such option by the copyright
036:         * holder.
037:         */
038:
039:        package javax.servlet.jsp.jstl.sql;
040:
041:        import java.util.SortedMap;
042:
043:        /**
044:         * <p>This interface represents the result of a &lt;sql:query&gt;
045:         * action. It provides access to the following information in the
046:         * query result:</p>
047:         *
048:         * <ul>
049:         * <li> The result rows (<tt>getRows()</tt> and <tt>getRowsByIndex()</tt>)
050:         * <li> The column names (<tt>getColumnNames()</tt>)
051:         * <li> The number of rows in the result (<tt>getRowCount()</tt>)
052:         * <li> An indication whether the rows returned represent the complete result 
053:         *      or just a subset that is limited by a maximum row setting
054:         *      (<tt>isLimitedByMaxRows()</tt>)
055:         * </ul>
056:         *
057:         * <p>An implementation of the <tt>Result</tt> interface provides a
058:         * <i>disconnected</i> view into the result of a query.
059:         *
060:         * @author Justyna Horwat
061:         *
062:         */
063:        public interface Result {
064:
065:            /**
066:             * <p>Returns the result of the query as an array of <code>SortedMap</code> objects. 
067:             * Each item of the array represents a specific row in the query result.</p>
068:             *
069:             * <p>A row is structured as a <code>SortedMap</code> object where the key is the column name, 
070:             * and where the value is the value associated with the column identified by 
071:             * the key. The column value is an Object of the Java type corresponding 
072:             * to the mapping between column types and Java types defined by the JDBC 
073:             * specification when the <code>ResultSet.getObject()</code> method is used.</p>
074:             *
075:             * <p>The <code>SortedMap</code> must use the <code>Comparator</code> 
076:             * <code>java.util.String.CASE_INSENSITIVE_ORDER</code>. 
077:             * This makes it possible to access the key as a case insensitive representation 
078:             * of a column name. This method will therefore work regardless of the case of 
079:             * the column name returned by the database.</p>
080:             *
081:             * @return The result rows as an array of <code>SortedMap</code> objects
082:             */
083:            public SortedMap[] getRows();
084:
085:            /**
086:             * Returns the result of the query as an array of arrays. 
087:             * The first array dimension represents a specific row in the query result. 
088:             * The array elements for each row are Object instances of the Java type 
089:             * corresponding to the mapping between column types and Java types defined 
090:             * by the JDBC specification when the <code>ResultSet.getObject()</code> method is used.
091:             *
092:             * @return the result rows as an array of <code>Object[]</code> objects
093:             */
094:            public Object[][] getRowsByIndex();
095:
096:            /**
097:             * Returns the names of the columns in the result. The order of the names in the array 
098:             * matches the order in which columns are returned in method getRowsByIndex().
099:             *
100:             * @return the column names as an array of <code>String</code> objects
101:             */
102:            public String[] getColumnNames();
103:
104:            /**
105:             * Returns the number of rows in the cached ResultSet
106:             *
107:             * @return the number of rows in the result
108:             */
109:            public int getRowCount();
110:
111:            /**
112:             * Returns true if the query was limited by a maximum row setting
113:             *
114:             * @return <tt>true</tt> if the query was limited by a maximum
115:             * row setting
116:             */
117:            public boolean isLimitedByMaxRows();
118:        }
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