Coverage report

  %line %branch
org.apache.jcs.auxiliary.disk.jdbc.hsql.HSQLDiskCacheFactory
0% 
0% 

 1   
 package org.apache.jcs.auxiliary.disk.jdbc.hsql;
 2   
 
 3   
 /*
 4   
  * Licensed to the Apache Software Foundation (ASF) under one
 5   
  * or more contributor license agreements.  See the NOTICE file
 6   
  * distributed with this work for additional information
 7   
  * regarding copyright ownership.  The ASF licenses this file
 8   
  * to you under the Apache License, Version 2.0 (the
 9   
  * "License"); you may not use this file except in compliance
 10   
  * with the License.  You may obtain a copy of the License at
 11   
  *
 12   
  *   http://www.apache.org/licenses/LICENSE-2.0
 13   
  *
 14   
  * Unless required by applicable law or agreed to in writing,
 15   
  * software distributed under the License is distributed on an
 16   
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17   
  * KIND, either express or implied.  See the License for the
 18   
  * specific language governing permissions and limitations
 19   
  * under the License.
 20   
  */
 21   
 
 22   
 import java.sql.Connection;
 23   
 import java.sql.DriverManager;
 24   
 import java.sql.SQLException;
 25   
 import java.sql.Statement;
 26   
 import java.util.Collections;
 27   
 import java.util.HashSet;
 28   
 import java.util.Set;
 29   
 
 30   
 import org.apache.commons.logging.Log;
 31   
 import org.apache.commons.logging.LogFactory;
 32   
 import org.apache.jcs.auxiliary.AuxiliaryCache;
 33   
 import org.apache.jcs.auxiliary.AuxiliaryCacheAttributes;
 34   
 import org.apache.jcs.auxiliary.AuxiliaryCacheFactory;
 35   
 import org.apache.jcs.auxiliary.disk.jdbc.JDBCDiskCacheAttributes;
 36   
 import org.apache.jcs.auxiliary.disk.jdbc.JDBCDiskCacheManager;
 37   
 import org.apache.jcs.engine.behavior.ICompositeCacheManager;
 38   
 
 39   
 /**
 40   
  * This factory should create mysql disk caches.
 41   
  * <p>
 42   
  * @author Aaron Smuts
 43   
  */
 44  0 
 public class HSQLDiskCacheFactory
 45   
     implements AuxiliaryCacheFactory
 46   
 {
 47  0 
     private final static Log log = LogFactory.getLog( HSQLDiskCacheFactory.class );
 48   
 
 49  0 
     private String name = "HSQLDiskCacheFactory";
 50   
 
 51  0 
     private Set databases = Collections.synchronizedSet( new HashSet() );
 52   
 
 53   
     /**
 54   
      * This factory method should create an instance of the mysqlcache.
 55   
      */
 56   
     public AuxiliaryCache createCache( AuxiliaryCacheAttributes rawAttr, ICompositeCacheManager arg1 )
 57   
     {
 58  0 
         JDBCDiskCacheManager mgr = JDBCDiskCacheManager.getInstance( (JDBCDiskCacheAttributes) rawAttr );
 59   
         try
 60   
         {
 61  0 
             setupDatabase( (JDBCDiskCacheAttributes) rawAttr );
 62   
         }
 63  0 
         catch ( Exception e )
 64   
         {
 65   
             // TODO we may not want to try and get the cache at this point.
 66  0 
             log.error( "Problem setting up database.", e );
 67  0 
         }
 68  0 
         return mgr.getCache( (JDBCDiskCacheAttributes) rawAttr );
 69   
     }
 70   
 
 71   
     /**
 72   
      * The name of the factory.
 73   
      */
 74   
     public void setName( String nameArg )
 75   
     {
 76  0 
         name = nameArg;
 77  0 
     }
 78   
 
 79   
     /**
 80   
      * Returns the display name
 81   
      */
 82   
     public String getName()
 83   
     {
 84  0 
         return name;
 85   
     }
 86   
 
 87   
     /**
 88   
      * Creates the database if it doesn't exist, registers the driver class,
 89   
      * etc.
 90   
      * <p>
 91   
      * @param attributes
 92   
      * @throws Exception
 93   
      */
 94   
     protected void setupDatabase( JDBCDiskCacheAttributes attributes )
 95   
         throws Exception
 96   
     {
 97  0 
         if ( attributes == null )
 98   
         {
 99  0 
             throw new Exception( "The attributes are null." );
 100   
         }
 101   
 
 102   
         // url should start with "jdbc:hsqldb:"
 103  0 
         String database = attributes.getUrl() + attributes.getDatabase();
 104   
 
 105  0 
         if ( databases.contains( database ) )
 106   
         {
 107  0 
             if ( log.isInfoEnabled() )
 108   
             {
 109  0 
                 log.info( "We already setup database [" + database + "]" );
 110   
             }
 111  0 
             return;
 112   
         }
 113   
 
 114   
         // TODO get this from the attributes.
 115  0 
         System.setProperty( "hsqldb.cache_scale", "8" );
 116   
 
 117   
         // "org.hsqldb.jdbcDriver"
 118  0 
         String driver = attributes.getDriverClassName();
 119   
         // "sa"
 120  0 
         String user = attributes.getUserName();
 121   
         // ""
 122  0 
         String password = attributes.getPassword();
 123   
 
 124  0 
         new org.hsqldb.jdbcDriver();
 125   
         try
 126   
         {
 127  0 
             Class.forName( driver ).newInstance();
 128   
 
 129  0 
             Connection cConn = DriverManager.getConnection( database, user, password );
 130   
 
 131  0 
             setupTABLE( cConn, attributes.getTableName() );
 132   
 
 133  0 
             if ( log.isInfoEnabled() )
 134   
             {
 135  0 
                 log.info( "Finished setting up database [" + database + "]" );
 136   
             }
 137   
 
 138  0 
             databases.add( database );
 139   
         }
 140  0 
         catch ( Exception e )
 141   
         {
 142  0 
             log.error( "Fatal problem setting up the database.", e );
 143  0 
         }
 144  0 
     }
 145   
 
 146   
     /**
 147   
      * SETUP TABLE FOR CACHE
 148   
      * <p>
 149   
      * @param cConn
 150   
      * @param tableName
 151   
      */
 152   
     private void setupTABLE( Connection cConn, String tableName )
 153   
     {
 154  0 
         boolean newT = true;
 155   
 
 156   
         // TODO make the cached nature of the table configurable
 157  0 
         StringBuffer createSql = new StringBuffer();
 158  0 
         createSql.append( "CREATE CACHED TABLE " + tableName );
 159  0 
         createSql.append( "( " );
 160  0 
         createSql.append( "CACHE_KEY             VARCHAR(250)          NOT NULL, " );
 161  0 
         createSql.append( "REGION                VARCHAR(250)          NOT NULL, " );
 162  0 
         createSql.append( "ELEMENT               BINARY, " );
 163  0 
         createSql.append( "CREATE_TIME           DATE, " );
 164  0 
         createSql.append( "CREATE_TIME_SECONDS   BIGINT, " );
 165  0 
         createSql.append( "MAX_LIFE_SECONDS      BIGINT, " );
 166  0 
         createSql.append( "SYSTEM_EXPIRE_TIME_SECONDS      BIGINT, " );
 167  0 
         createSql.append( "IS_ETERNAL            CHAR(1), " );
 168  0 
         createSql.append( "PRIMARY KEY (CACHE_KEY, REGION) " );
 169  0 
         createSql.append( ");" );
 170   
 
 171  0 
         Statement sStatement = null;
 172   
         try
 173   
         {
 174  0 
             sStatement = cConn.createStatement();
 175   
         }
 176  0 
         catch ( SQLException e )
 177   
         {
 178  0 
             log.error( "problem creating a statement.", e );
 179  0 
         }
 180   
 
 181   
         try
 182   
         {
 183  0 
             sStatement.executeQuery( createSql.toString() );
 184  0 
             sStatement.close();
 185   
         }
 186  0 
         catch ( SQLException e )
 187   
         {
 188  0 
             if ( e.toString().indexOf( "already exists" ) != -1 )
 189   
             {
 190  0 
                 newT = false;
 191  0 
             }
 192   
             else
 193   
             {
 194  0 
                 log.error( "Problem creating table.", e );
 195   
             }
 196  0 
         }
 197   
 
 198   
         // TODO create an index on SYSTEM_EXPIRE_TIME_SECONDS
 199  0 
         String setupData[] = { "create index iKEY on " + tableName + " (CACHE_KEY, REGION)" };
 200   
 
 201  0 
         if ( newT )
 202   
         {
 203  0 
             for ( int i = 1; i < setupData.length; i++ )
 204   
             {
 205   
                 try
 206   
                 {
 207  0 
                     sStatement.executeQuery( setupData[i] );
 208   
                 }
 209  0 
                 catch ( SQLException e )
 210   
                 {
 211  0 
                     log.error( "Exception caught when creating index." + e );
 212  0 
                 }
 213   
             }
 214   
         }
 215  0 
     }
 216   
 }

This report is generated by jcoverage, Maven and Maven JCoverage Plugin.