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Collection of methods to fetch spatial metadata in SFS database like PostGIS or H2Spatial. Theses functions can be commonly used either in PostGIS or in H2. Spatial utilities publish also a DataSourceFactory wrapper that provide JDBC Wrapper for spatial functionality.
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/**
 * H2GIS is a library that brings spatial support to the H2 Database Engine
 * .
 *
 * H2GIS is distributed under GPL 3 license. It is produced by CNRS
 * .
 *
 * H2GIS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * H2GIS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * H2GIS. If not, see .
 *
 * For more information, please consult: 
 * or contact directly: info_at_h2gis.org
 */
package org.h2gis.utilities.wrapper;

import java.sql.Array;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.SQLClientInfoException;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Savepoint;
import java.sql.Statement;
import java.sql.Struct;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;

/**
 * @author Nicolas Fortin
 */
public class ConnectionWrapper implements Connection {
    private Connection connection;

    public ConnectionWrapper(Connection connection) {
        this.connection = connection;
    }

    @Override
    public Statement createStatement() throws SQLException {
        return new StatementWrapper(connection.createStatement(),this);
    }

    @Override
    public PreparedStatement prepareStatement(String sql) throws SQLException {
        return new PreparedStatementWrapper(connection.prepareStatement(sql),this);
    }

    @Override
    public CallableStatement prepareCall(String sql) throws SQLException {
        return connection.prepareCall(sql);
    }

    @Override
    public String nativeSQL(String sql) throws SQLException {
        return connection.nativeSQL(sql);
    }

    @Override
    public void setAutoCommit(boolean autoCommit) throws SQLException {
        connection.setAutoCommit(autoCommit);
    }

    @Override
    public boolean getAutoCommit() throws SQLException {
        return connection.getAutoCommit();
    }

    @Override
    public void commit() throws SQLException {
        connection.commit();
    }

    @Override
    public void rollback() throws SQLException {
        connection.rollback();
    }

    @Override
    public void close() throws SQLException {
        connection.close();
    }

    @Override
    public boolean isClosed() throws SQLException {
        return connection.isClosed();
    }

    @Override
    public DatabaseMetaData getMetaData() throws SQLException {
        return connection.getMetaData();
    }

    @Override
    public void setReadOnly(boolean readOnly) throws SQLException {
        connection.setReadOnly(readOnly);
    }

    @Override
    public boolean isReadOnly() throws SQLException {
        return connection.isReadOnly();
    }

    @Override
    public void setCatalog(String catalog) throws SQLException {
        connection.setCatalog(catalog);
    }

    @Override
    public String getCatalog() throws SQLException {
        return connection.getCatalog();
    }

    @Override
    public void setTransactionIsolation(int level) throws SQLException {
        connection.setTransactionIsolation(level);
    }

    @Override
    public int getTransactionIsolation() throws SQLException {
        return connection.getTransactionIsolation();
    }

    @Override
    public SQLWarning getWarnings() throws SQLException {
        return connection.getWarnings();
    }

    @Override
    public void clearWarnings() throws SQLException {
        connection.clearWarnings();
    }

    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
        return new StatementWrapper(connection.createStatement(resultSetType, resultSetConcurrency), this);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
        return new PreparedStatementWrapper(connection.prepareStatement(sql, resultSetType, resultSetConcurrency), this);
    }

    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
        return connection.prepareCall(sql, resultSetType, resultSetConcurrency);
    }

    @Override
    public Map> getTypeMap() throws SQLException {
        return connection.getTypeMap();
    }

    @Override
    public void setTypeMap(Map> map) throws SQLException {
        connection.setTypeMap(map);
    }

    @Override
    public void setHoldability(int holdability) throws SQLException {
        connection.setHoldability(holdability);
    }

    @Override
    public int getHoldability() throws SQLException {
        return connection.getHoldability();
    }

    @Override
    public Savepoint setSavepoint() throws SQLException {
        return connection.setSavepoint();
    }

    @Override
    public Savepoint setSavepoint(String name) throws SQLException {
        return connection.setSavepoint(name);
    }

    @Override
    public void rollback(Savepoint savepoint) throws SQLException {
        connection.rollback(savepoint);
    }

    @Override
    public void releaseSavepoint(Savepoint savepoint) throws SQLException {
        connection.releaseSavepoint(savepoint);
    }

    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return new StatementWrapper(connection.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability), this);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return new PreparedStatementWrapper(connection.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability), this);
    }

    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        return connection.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
        return new PreparedStatementWrapper(connection.prepareStatement(sql, autoGeneratedKeys), this);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
        return new PreparedStatementWrapper(connection.prepareStatement(sql, columnIndexes), this);
    }

    @Override
    public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
        return new PreparedStatementWrapper(connection.prepareStatement(sql, columnNames),this);
    }

    @Override
    public Clob createClob() throws SQLException {
        return connection.createClob();
    }

    @Override
    public Blob createBlob() throws SQLException {
        return connection.createBlob();
    }

    @Override
    public NClob createNClob() throws SQLException {
        return connection.createNClob();
    }

    @Override
    public SQLXML createSQLXML() throws SQLException {
        return connection.createSQLXML();
    }

    @Override
    public boolean isValid(int timeout) throws SQLException {
        return connection.isValid(timeout);
    }

    @Override
    public void setClientInfo(String name, String value) throws SQLClientInfoException {
        connection.setClientInfo(name, value);
    }

    @Override
    public void setClientInfo(Properties properties) throws SQLClientInfoException {
        connection.setClientInfo(properties);
    }

    @Override
    public String getClientInfo(String name) throws SQLException {
        return connection.getClientInfo(name);
    }

    @Override
    public Properties getClientInfo() throws SQLException {
        return connection.getClientInfo();
    }

    @Override
    public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
        return connection.createArrayOf(typeName, elements);
    }

    @Override
    public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
        return connection.createStruct(typeName, attributes);
    }

    // @Override -- Commented out for Java 6 compatibility.
    public void setSchema(String schema) throws SQLException {
        throw new UnsupportedOperationException("This Java 7 method is not yet supported.");
    }

    // @Override -- Commented out for Java 6 compatibility.
    public String getSchema() throws SQLException {
        throw new UnsupportedOperationException("This Java 7 method is not yet supported.");
    }

    // @Override -- Commented out for Java 6 compatibility.
    public void abort(Executor executor) throws SQLException {
        throw new UnsupportedOperationException("This Java 7 method is not yet supported.");
    }

    // @Override -- Commented out for Java 6 compatibility.
    public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
        throw new UnsupportedOperationException("This Java 7 method is not yet supported.");
    }

    // @Override -- Commented out for Java 6 compatibility.
    public int getNetworkTimeout() throws SQLException {
        throw new UnsupportedOperationException("This Java 7 method is not yet supported.");
    }

    @Override
    public  T unwrap(Class iface) throws SQLException {
        if(iface.isInstance(connection)) {
            return iface.cast(connection);
        } else {
            return connection.unwrap(iface);
        }
    }

    @Override
    public boolean isWrapperFor(Class iface) throws SQLException {
        return iface.isInstance(this) || iface.isInstance(connection) || connection.isWrapperFor(iface);
    }
}