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package org.hibernate.connection; |
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import java.sql.Connection; |
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import java.sql.Driver; |
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import java.sql.SQLException; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Properties; |
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import org.hibernate.HibernateException; |
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import org.hibernate.cfg.Environment; |
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import org.hibernate.util.ReflectHelper; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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33 | 0 | public class SimpleConnectionProvider implements ConnectionProvider { |
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private String url; |
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private Properties connectionProps; |
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private Integer isolation; |
38 | 0 | private final ArrayList pool = new ArrayList(); |
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private int poolSize; |
40 | 0 | private int checkedOut = 0; |
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private boolean autocommit; |
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private Driver driver; |
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44 | 0 | private static final Logger log = LoggerFactory.getLogger(SimpleConnectionProvider.class); |
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public void configure(Properties props) throws HibernateException { |
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48 | 0 | String driverClass = props.getProperty(Environment.DRIVER); |
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50 | 0 | poolSize = getInt(Environment.POOL_SIZE, props, 20); |
51 | 0 | log.info("Using Hibernate built-in connection pool (not for production use!)"); |
52 | 0 | log.info("Hibernate connection pool size: " + poolSize); |
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54 | 0 | autocommit = getBoolean(Environment.AUTOCOMMIT, props); |
55 | 0 | log.info("autocommit mode: " + autocommit); |
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57 | 0 | isolation = getInteger(Environment.ISOLATION, props); |
58 | 0 | if (isolation!=null) |
59 | 0 | log.info( "JDBC isolation level: " + Environment.isolationLevelToString( isolation.intValue() ) ); |
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61 | 0 | if (driverClass==null) { |
62 | 0 | log.warn("no JDBC Driver class was specified by property " + Environment.DRIVER); |
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} |
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else { |
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try { |
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67 | 0 | driver = (Driver) Class.forName(driverClass, true, Thread.currentThread().getContextClassLoader()).newInstance(); |
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} |
69 | 0 | catch (Exception e) { |
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try { |
71 | 0 | driver = (Driver) ReflectHelper.classForName(driverClass).newInstance(); |
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} |
73 | 0 | catch (Exception e1) { |
74 | 0 | log.error(e1.getMessage()); |
75 | 0 | throw new HibernateException(e1); |
76 | 0 | } |
77 | 0 | } |
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} |
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80 | 0 | url = props.getProperty( Environment.URL ); |
81 | 0 | if ( url == null ) { |
82 | 0 | String msg = "JDBC URL was not specified by property " + Environment.URL; |
83 | 0 | log.error( msg ); |
84 | 0 | throw new HibernateException( msg ); |
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} |
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87 | 0 | connectionProps = ConnectionProviderFactory.getConnectionProperties( props ); |
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89 | 0 | log.info( "using driver: " + driverClass + " at URL: " + url ); |
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91 | 0 | if ( log.isDebugEnabled() ) { |
92 | 0 | log.info( "connection properties: " + connectionProps ); |
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} |
94 | 0 | else if ( log.isInfoEnabled() ) { |
95 | 0 | log.info( "connection properties: " + maskOut(connectionProps, "password") ); |
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} |
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98 | 0 | } |
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public Connection getConnection() throws SQLException { |
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102 | 0 | if ( log.isTraceEnabled() ) log.trace( "total checked-out connections: " + checkedOut ); |
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104 | 0 | synchronized (pool) { |
105 | 0 | if ( !pool.isEmpty() ) { |
106 | 0 | int last = pool.size() - 1; |
107 | 0 | if ( log.isTraceEnabled() ) { |
108 | 0 | log.trace("using pooled JDBC connection, pool size: " + last); |
109 | 0 | checkedOut++; |
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} |
111 | 0 | Connection pooled = (Connection) pool.remove(last); |
112 | 0 | if (isolation!=null) pooled.setTransactionIsolation( isolation.intValue() ); |
113 | 0 | if ( pooled.getAutoCommit()!=autocommit ) pooled.setAutoCommit(autocommit); |
114 | 0 | return pooled; |
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} |
116 | 0 | } |
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118 | 0 | log.debug("opening new JDBC connection"); |
119 | 0 | Connection conn = driver.connect(url, connectionProps); |
120 | 0 | if (isolation!=null) conn.setTransactionIsolation( isolation.intValue() ); |
121 | 0 | if ( conn.getAutoCommit()!=autocommit ) conn.setAutoCommit(autocommit); |
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123 | 0 | if ( log.isDebugEnabled() ) { |
124 | 0 | log.debug( "created connection to: " + url + ", Isolation Level: " + conn.getTransactionIsolation() ); |
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} |
126 | 0 | if ( log.isTraceEnabled() ) checkedOut++; |
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128 | 0 | return conn; |
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} |
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public void closeConnection(Connection conn) throws SQLException { |
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133 | 0 | if ( log.isDebugEnabled() ) checkedOut--; |
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135 | 0 | synchronized (pool) { |
136 | 0 | int currentSize = pool.size(); |
137 | 0 | if ( currentSize < poolSize ) { |
138 | 0 | if ( log.isTraceEnabled() ) log.trace("returning connection to pool, pool size: " + (currentSize + 1) ); |
139 | 0 | pool.add(conn); |
140 | 0 | return; |
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} |
142 | 0 | } |
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144 | 0 | log.debug("closing JDBC connection"); |
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146 | 0 | conn.close(); |
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148 | 0 | } |
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protected void finalize() { |
151 | 0 | close(); |
152 | 0 | } |
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public void close() { |
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156 | 0 | log.info("cleaning up connection pool: " + url); |
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158 | 0 | Iterator iter = pool.iterator(); |
159 | 0 | while ( iter.hasNext() ) { |
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try { |
161 | 0 | ( (Connection) iter.next() ).close(); |
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} |
163 | 0 | catch (SQLException sqle) { |
164 | 0 | log.warn("problem closing pooled connection", sqle); |
165 | 0 | } |
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} |
167 | 0 | pool.clear(); |
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169 | 0 | } |
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public boolean supportsAggressiveRelease() { |
175 | 0 | return false; |
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} |
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public static boolean getBoolean(String name, Map values) { |
191 | 0 | return getBoolean( name, values, false ); |
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} |
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public static boolean getBoolean(String name, Map values, boolean defaultValue) { |
204 | 0 | Object value = values.get( name ); |
205 | 0 | if ( value == null ) { |
206 | 0 | return defaultValue; |
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} |
208 | 0 | if ( Boolean.class.isInstance( value ) ) { |
209 | 0 | return ( (Boolean) value ).booleanValue(); |
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} |
211 | 0 | if ( String.class.isInstance( value ) ) { |
212 | 0 | return Boolean.parseBoolean( (String) value ); |
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} |
214 | 0 | throw new HibernateException( |
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"Could not determine how to handle configuration value [name=" + name + ", value=" + value + "] as boolean" |
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); |
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} |
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public static int getInt(String name, Map values, int defaultValue) { |
229 | 0 | Object value = values.get( name ); |
230 | 0 | if ( value == null ) { |
231 | 0 | return defaultValue; |
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} |
233 | 0 | if ( Integer.class.isInstance( value ) ) { |
234 | 0 | return ( (Integer) value ).intValue(); |
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} |
236 | 0 | if ( String.class.isInstance( value ) ) { |
237 | 0 | return Integer.parseInt( (String) value ); |
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} |
239 | 0 | throw new HibernateException( |
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"Could not determine how to handle configuration value [name=" + name + |
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", value=" + value + "(" + value.getClass().getName() + ")] as int" |
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); |
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} |
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public static Integer getInteger(String name, Map values) { |
254 | 0 | Object value = values.get( name ); |
255 | 0 | if ( value == null ) { |
256 | 0 | return null; |
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} |
258 | 0 | if ( Integer.class.isInstance( value ) ) { |
259 | 0 | return (Integer) value; |
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} |
261 | 0 | if ( String.class.isInstance( value ) ) { |
262 | 0 | return Integer.valueOf( (String) value ); |
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} |
264 | 0 | throw new HibernateException( |
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"Could not determine how to handle configuration value [name=" + name + |
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", value=" + value + "(" + value.getClass().getName() + ")] as Integer" |
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); |
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} |
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public static Properties maskOut(Properties props, String key) { |
279 | 0 | Properties clone = ( Properties ) props.clone(); |
280 | 0 | if ( clone.get( key ) != null ) { |
281 | 0 | clone.setProperty( key, "****" ); |
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} |
283 | 0 | return clone; |
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} |
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} |
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