root / trunk / org.gvsig.postgresql / org.gvsig.postgresql.provider / src / main / java / org / gvsig / postgresql / dal / PostgreSQLHelper.java @ 510
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package org.gvsig.postgresql.dal; |
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import java.sql.Connection; |
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import java.sql.SQLException; |
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import org.apache.commons.dbcp.BasicDataSource; |
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import org.apache.commons.lang3.BooleanUtils; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.fmap.dal.SQLBuilder; |
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import org.gvsig.fmap.dal.resource.exception.AccessResourceException; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCConnectionParameters; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCNewStoreParameters; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCServerExplorerParameters; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCStoreParameters; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCDriverClassNotFoundException; |
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import org.gvsig.fmap.dal.store.jdbc2.OperationsFactory; |
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import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCHelperBase; |
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import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase; |
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import org.gvsig.fmap.dal.store.jdbc2.spi.SRSSolverBase; |
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import org.gvsig.postgresql.dal.operations.PostgreSQLOperationsFactory; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public class PostgreSQLHelper extends JDBCHelperBase { |
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static final Logger logger = LoggerFactory.getLogger(PostgreSQLHelper.class); |
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public static final String POSTGRESQL_JDBC_DRIVER = "org.postgresql.Driver"; |
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public static String getConnectionURL(PostgreSQLConnectionParameters params) { |
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return getConnectionURL(
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params.getHost(), |
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params.getPort(), |
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params.getDBName() |
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); |
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} |
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public static String getConnectionURL(String host, Integer port, String db) { |
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if( StringUtils.isEmpty(host) ) {
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throw new IllegalArgumentException("Parameter 'host' can't be null."); |
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} |
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String connectionURL = "jdbc:postgresql://" + host; |
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if (port != null) { |
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connectionURL = connectionURL + ":" + port;
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} |
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connectionURL = connectionURL + "/" + db;
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logger.debug("connectionURL: {}", connectionURL);
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return connectionURL;
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} |
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private static class ConnectionProvider { |
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private static boolean needRegisterDriver = true; |
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private BasicDataSource dataSource = null; |
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private final PostgreSQLConnectionParameters connectionParameters; |
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public ConnectionProvider(PostgreSQLConnectionParameters connectionParameters) {
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this.connectionParameters = connectionParameters;
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} |
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public Connection getConnection() throws SQLException { |
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if (this.dataSource == null) { |
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this.dataSource = this.createDataSource(); |
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} |
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if( logger.isDebugEnabled() ) {
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logger.debug("getConnection:\n" + getStatusInformation());
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} |
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Connection conn;
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try {
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conn = this.dataSource.getConnection();
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} catch(Throwable ex) { |
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logger.debug("Error getting connection from pool.",ex);
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throw ex;
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} |
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if( logger.isDebugEnabled() ) {
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logger.debug("Created connection: {}\n NumActive: {}\n NumIdle: {}",
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new Object[] { |
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conn.hashCode(), |
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this.dataSource.getNumActive(),
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this.dataSource.getNumIdle()
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} |
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); |
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} |
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return conn;
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} |
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public void closeConnection(Connection connection) { |
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if( connection != null ) { |
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int connectionId = connection.hashCode();
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try {
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connection.close(); |
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} catch(Throwable ex) { |
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logger.warn("Can't close connection.", ex);
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} |
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if( logger.isDebugEnabled() ) {
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Boolean isClosed;
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try {
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isClosed = connection.isClosed(); |
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} catch(Throwable th) { |
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isClosed = null;
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} |
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logger.debug("Closed connection: {}\n isClosed: {}\n NumActive: {}\n NumIdle: {}",
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new Object[] { |
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connectionId, |
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isClosed, |
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this.dataSource.getNumActive(),
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this.dataSource.getNumIdle()
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} |
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); |
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} |
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} else if( logger.isDebugEnabled() ) { |
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logger.debug("Close connection: null");
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} |
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} |
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public String getStatusInformation() { |
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StringBuilder builder = new StringBuilder(); |
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builder.append("BasicDataSource pool status:\n");
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builder.append(" Connection URL: '").append(this.dataSource.getUrl()).append("'\n"); |
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if( this.dataSource.getInitialSize()>0 ) { |
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builder.append(" InitialSize: ").append(this.dataSource.getInitialSize()).append(" (The initial number of connections that are created when the pool is started)\n"); |
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} |
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if( this.dataSource.isPoolPreparedStatements() ) { |
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builder.append(" PoolPreparedStatements: ").append(this.dataSource.isPoolPreparedStatements()).append("\n"); |
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builder.append(" MaxOpenPreparedStatements: ").append(this.dataSource.getMaxOpenPreparedStatements()).append(" (The maximum number of open statements that can be allocated from the statement pool at the same time, or non-positive for no limit)\n"); |
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} |
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builder.append(" MaxActive: ").append(this.dataSource.getMaxActive()).append(" (The maximum number of active connections that can be allocated from this pool at the same time)\n"); |
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builder.append(" MaxIdle: ").append(this.dataSource.getMaxIdle()).append(" (The maximum number of connections that can remain idle in the pool)\n"); |
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builder.append(" NumActive:").append(this.dataSource.getNumActive()).append(" (the current number of active connections)\n"); |
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builder.append(" NumIdle:").append(this.dataSource.getNumIdle()).append(" (the current number of idle connections)\n"); |
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return builder.toString();
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} |
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private BasicDataSource createDataSource() throws SQLException { |
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if (!this.isRegistered()) { |
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this.registerDriver();
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} |
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PostgreSQLConnectionParameters params = connectionParameters; |
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BasicDataSource ds = new BasicDataSource();
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ds.setMaxIdle(params.getMaxIdle()); |
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ds.setDriverClassName(params.getJDBCDriverClassName()); |
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if( params.getUseSSL() ) {
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String s = BooleanUtils.toStringTrueFalse(params.getUseSSL());
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ds.addConnectionProperty("ssl", s );
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} |
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if( !StringUtils.isEmpty(params.getUser()) ) {
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ds.setUsername(params.getUser()); |
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} |
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if( !StringUtils.isEmpty(params.getPassword()) ) {
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ds.setPassword(params.getPassword()); |
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} |
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ds.setUrl(params.getUrl()); |
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ds.setMaxWait(60L * 1000); |
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return ds;
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} |
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private boolean isRegistered() { |
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return needRegisterDriver;
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} |
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public void registerDriver() throws SQLException { |
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String className = this.connectionParameters.getJDBCDriverClassName(); |
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if (className == null) { |
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return;
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} |
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try {
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Class theClass = Class.forName(className); |
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if (theClass == null) { |
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throw new JDBCDriverClassNotFoundException(PostgreSQLLibrary.NAME, className); |
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} |
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} catch (Exception e) { |
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throw new SQLException("Can't register JDBC driver '" + className + "'.", e); |
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} |
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needRegisterDriver = false;
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} |
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} |
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private ConnectionProvider connectionProvider = null; |
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public PostgreSQLHelper(JDBCConnectionParameters connectionParameters) {
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super(connectionParameters);
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this.srssolver = new SRSSolverBase(this); |
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} |
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@Override
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public Connection getConnection() throws AccessResourceException { |
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try {
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if (this.connectionProvider == null) { |
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this.connectionProvider = new ConnectionProvider(this.getConnectionParameters()); |
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} |
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return this.connectionProvider.getConnection(); |
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} catch (SQLException ex) { |
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throw new AccessResourceException(PostgreSQLLibrary.NAME, ex); |
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} |
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} |
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@Override
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public void closeConnection(Connection connection) { |
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this.connectionProvider.closeConnection(connection);
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} |
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@Override
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public PostgreSQLConnectionParameters getConnectionParameters() {
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return (PostgreSQLConnectionParameters) super.getConnectionParameters(); |
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} |
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@Override
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public String getConnectionURL() { |
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return getConnectionURL(this.getConnectionParameters()); |
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} |
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@Override
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protected String getResourceType() { |
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return PostgreSQLLibrary.NAME;
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} |
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@Override
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public String getProviderName() { |
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return PostgreSQLLibrary.NAME;
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} |
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@Override
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public JDBCSQLBuilderBase createSQLBuilder() {
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return new PostgreSQLBuilder(this); |
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} |
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@Override
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public OperationsFactory getOperations() {
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if (this.operationsFactory == null) { |
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this.operationsFactory = new PostgreSQLOperationsFactory(this); |
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} |
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return operationsFactory;
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} |
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@Override
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public SQLBuilder.GeometrySupportType getGeometrySupportType() {
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return SQLBuilder.GeometrySupportType.WKB;
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} |
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@Override
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public boolean hasSpatialFunctions() { |
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return true; |
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} |
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@Override
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public boolean canWriteGeometry(int geometryType, int geometrySubtype) { |
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return true; |
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} |
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@Override
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public String getQuoteForIdentifiers() { |
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return "\""; |
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} |
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@Override
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public boolean allowAutomaticValues() { |
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return true; |
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} |
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@Override
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public boolean supportOffsetInSelect() { |
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return true; |
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} |
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@Override
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public String getQuoteForStrings() { |
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return "'"; |
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} |
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@Override
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public String getSourceId(JDBCStoreParameters parameters) { |
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return parameters.getDBName() + "." + |
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parameters.getSchema()+ "." +
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parameters.getTable(); |
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} |
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@Override
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public JDBCNewStoreParameters createNewStoreParameters() {
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return new PostgreSQLNewStoreParameters(); |
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} |
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@Override
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public JDBCStoreParameters createOpenStoreParameters() {
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return new PostgreSQLStoreParameters(); |
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} |
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@Override
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public JDBCServerExplorerParameters createServerExplorerParameters() {
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return new PostgreSQLServerExplorerParameters(); |
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} |
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} |