Source Code Cross Referenced for bug5052rts.java in  » Database-DBMS » db-derby-10.2 » org » apache » derbyTesting » functionTests » tests » lang » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derbyTesting.functionTests.tests.lang 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:
003:           Derby - Class org.apache.derbyTesting.functionTests.tests.lang.bug5052rts
004:
005:           Licensed to the Apache Software Foundation (ASF) under one or more
006:           contributor license agreements.  See the NOTICE file distributed with
007:           this work for additional information regarding copyright ownership.
008:           The ASF licenses this file to You under the Apache License, Version 2.0
009:           (the "License"); you may not use this file except in compliance with
010:           the License.  You may obtain a copy of the License at
011:
012:              http://www.apache.org/licenses/LICENSE-2.0
013:
014:           Unless required by applicable law or agreed to in writing, software
015:           distributed under the License is distributed on an "AS IS" BASIS,
016:           WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017:           See the License for the specific language governing permissions and
018:           limitations under the License.
019:
020:         */
021:
022:        package org.apache.derbyTesting.functionTests.tests.lang;
023:
024:        import java.sql.Connection;
025:        import java.sql.DriverManager;
026:        import java.sql.ResultSetMetaData;
027:        import java.sql.ResultSet;
028:        import java.sql.Statement;
029:        import java.sql.SQLException;
030:        import java.sql.Types;
031:        import java.sql.*;
032:
033:        import org.apache.derby.tools.ij;
034:        import org.apache.derby.tools.JDBCDisplayUtil;
035:
036:        /**
037:         * testing gathering of runtime statistics for 
038:         * for the resultsets/statements not closed by the usee,
039:         * but get closed when garbage collector collects such
040:         * objects and closes them by calling the finalize.
041:         * See bug : 5052 for details.
042:         *
043:         */
044:
045:        public class bug5052rts {
046:
047:            public static void main(String[] args) {
048:                Connection conn;
049:                Statement stmt;
050:                PreparedStatement pstmt;
051:
052:                System.out.println("Test RunTime Statistics starting");
053:                try {
054:                    // use the ij utility to read the property file and
055:                    // make the initial connection.
056:                    ij.getPropertyArg(args);
057:                    conn = ij.startJBMS();
058:                    stmt = conn.createStatement();
059:                    try {
060:                        stmt.execute("drop table tab1");
061:                    } catch (Throwable e) {
062:                    }
063:
064:                    //create a table, insert a row, do a select from the table,
065:                    stmt
066:                            .execute("create table tab1 (COL1 int, COL2 smallint, COL3 real)");
067:                    stmt.executeUpdate("insert into tab1 values(1, 2, 3.1)");
068:                    stmt.executeUpdate("insert into tab1 values(2, 2, 3.1)");
069:                    conn.setAutoCommit(false);
070:
071:                    //case1: Setting runtime statistics on just before result set close.
072:                    if (true) {
073:                        Statement stmt0 = conn.createStatement();
074:                        ResultSet rs = stmt0.executeQuery("select * from tab1"); // opens the result set
075:
076:                        while (rs.next()) {
077:                            System.out.println(rs.getString(1));
078:                        }
079:                        //set the runtime statistics on now.
080:                        CallableStatement cs = conn
081:                                .prepareCall("CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(?)");
082:                        cs.setInt(1, 1);
083:                        cs.execute();
084:                        cs.close();
085:
086:                        rs.close();
087:                        stmt0.close();
088:                    }
089:
090:                    CallableStatement cs = conn
091:                            .prepareCall("CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(?)");
092:                    cs.setInt(1, 0);
093:                    cs.execute();
094:                    cs.close();
095:
096:                    //case2: Stament/Resutset getting closed by the Garbage collector.
097:                    if (true) {
098:                        Statement stmt1 = conn.createStatement();
099:                        ResultSet rs = stmt1.executeQuery("select * from tab1"); // opens the result set
100:
101:                        while (rs.next()) {
102:                            System.out.println(rs.getString(1));
103:                        }
104:                        //set the runtime statistics on now.
105:                        cs = conn
106:                                .prepareCall("CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(?)");
107:                        cs.setInt(1, 1);
108:                        cs.execute();
109:                        cs.close();
110:                    }
111:
112:                    if (true) {
113:                        Statement stmt2 = conn.createStatement();
114:                        ResultSet rs1 = stmt2
115:                                .executeQuery("select count(*) from tab1"); // opens the result set
116:
117:                        while (rs1.next()) {
118:                            System.out.println(rs1.getString(1));
119:                        }
120:                    }
121:
122:                    for (int i = 0; i < 3; i++) {
123:                        System.gc();
124:                        System.runFinalization();
125:                        //sleep for sometime to make sure garbage collector kicked in 
126:                        //and collected the result set object.
127:                        Thread.sleep(3000);
128:                    }
129:
130:                    conn.commit(); //This should have failed before we fix 5052
131:                    conn.close();
132:                }
133:
134:                catch (SQLException e) {
135:                    dumpSQLExceptions(e);
136:                    e.printStackTrace();
137:                } catch (Throwable e) {
138:                    System.out.println("FAIL -- unexpected exception: " + e);
139:                    e.printStackTrace();
140:                }
141:                System.out
142:                        .println("Test RunTimeStatistics finished successfully");
143:            }
144:
145:            static private void dumpSQLExceptions(SQLException se) {
146:                System.out.println("FAIL -- unexpected exception");
147:                while (se != null) {
148:                    System.out.println("SQLSTATE(" + se.getSQLState() + "): "
149:                            + se);
150:                    se = se.getNextException();
151:                }
152:            }
153:
154:        }
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