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/*
 * Copyright 2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package leap.lang.jdbc;

import java.sql.*;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;

public class ConnectionWrapper implements Connection {
	
	protected Connection conn;

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

    @Override
    @SuppressWarnings("unchecked")
    public  T unwrap(Class iface) throws SQLException {
        if (iface.isInstance(this)) {
            return (T) this;
        }

        if(iface.isInstance(conn)) {
            return (T)conn;
        }

        if(conn instanceof Wrapper) {
            return conn.unwrap(iface);
        }

        throw new SQLException("Wrapped Connection " + conn.getClass() + "' is not an instance of " + iface);
    }

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

        if(iface.isInstance(conn)) {
            return true;
        }

        if(conn instanceof Wrapper) {
            return conn.isWrapperFor(iface);
        }

        return false;
    }

	@Override
	public Statement createStatement() throws SQLException {
		return conn.createStatement();
	}

	@Override
	public PreparedStatement prepareStatement(String sql) throws SQLException {
		return conn.prepareStatement(sql);
	}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	@Override
	public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
		return conn.createStatement(resultSetType, resultSetConcurrency);
	}

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

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

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

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

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

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

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

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

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

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

	@Override
	public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
		return conn.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
	}

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

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

	@Override
	public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
		return conn.prepareStatement(sql, autoGeneratedKeys);
	}

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

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

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

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

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

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

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

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

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

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

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

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

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

	@Override
	public void setSchema(String schema) throws SQLException {
		conn.setSchema(schema);
	}

	@Override
	public String getSchema() throws SQLException {
		return conn.getSchema();
	}

	@Override
	public void abort(Executor executor) throws SQLException {
		conn.abort(executor);
	}

	@Override
	public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
		conn.setNetworkTimeout(executor, milliseconds);
	}

	@Override
	public int getNetworkTimeout() throws SQLException {
		return conn.getNetworkTimeout();
	}

}