XlsStreamStatement.java

/*
 * Copyright 2012 sqlsheet.googlecode.com
 *
 * 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 com.googlecode.sqlsheet.stream;

import net.pcal.sqlsheet.parser.*;

import java.sql.*;


/**
 * SqlSheet implementation of java.sql.Statement which uses steaming over XLS
 *
 * @author <a href='http://code.google.com/p/sqlsheet'>sqlsheet</a>
 */
public class XlsStreamStatement implements Statement{

    XlsStreamConnection connection;
    SqlSheetParser parser;

    public XlsStreamStatement(XlsStreamConnection c) {
        if (c == null)
            throw new IllegalArgumentException();
        this.connection = c;
    }

    public Connection getConnection() throws SQLException {
        return connection;
    }

    public void close() throws SQLException {
    }

    public boolean execute(String sql) throws SQLException {
        executeQuery(sql);
        return false;
    }

    public int executeUpdate(String sql) throws SQLException {
        executeQuery(sql);
        return 1;
    }

    public ResultSet executeQuery(String query) throws SQLException {
        ParsedStatement parsed = parse(query);
        if (parsed instanceof SelectStarStatement) {
            return doSelect((SelectStarStatement) parsed);
        } else {
            throw new IllegalStateException(parsed.getClass().getName());
        }
    }

    protected ParsedStatement parse(String sql) throws SQLException {
        if (sql == null)
            throw new IllegalArgumentException();
        if (parser == null)
            parser = new SqlSheetParser();
        return parser.parse(sql);
    }

    protected ResultSet doSelect(SelectStarStatement sss) throws SQLException {
        XlsStreamResultSet out = findOrCreateResultSetFor(sss.getTable());
        out.beforeFirst();
        return out;
    }

    private XlsStreamResultSet findOrCreateResultSetFor(String tableName) throws SQLException {
        return new XlsStreamResultSet(tableName,connection);
    }

    public void setMaxFieldSize(int p0) throws SQLException {
        nyi();
    }

    public void setMaxRows(int p0) throws SQLException {
        nyi();
    }

    public void setEscapeProcessing(boolean p0) throws SQLException {
        nyi();
    }

    public void setQueryTimeout(int p0) throws SQLException {
        nyi();
    }

    public void setCursorName(String p0) throws SQLException {
        nyi();
    }

    public void setFetchDirection(int p0) throws SQLException {
        nyi();
    }

    public void setFetchSize(int p0) throws SQLException {
        nyi();
    }

    public int getMaxFieldSize() throws SQLException {
        nyi();
        return -1;
    }

    public int getMaxRows() throws SQLException {
        nyi();
        return -1;
    }

    public int getQueryTimeout() throws SQLException {
        nyi();
        return -1;
    }

    public SQLWarning getWarnings() throws SQLException {
        nyi();
        return null;
    }

    public ResultSet getResultSet() throws SQLException {
        nyi();
        return null;
    }

    public int getUpdateCount() throws SQLException {
        nyi();
        return -1;
    }

    public boolean getMoreResults() throws SQLException {
        nyi();
        return false;
    }

    public boolean getMoreResults(int current) throws SQLException {
        nyi();
        return false;
    }

    public int getFetchDirection() throws SQLException {
        nyi();
        return -1;
    }

    public int getFetchSize() throws SQLException {
        nyi();
        return -1;
    }

    public int getResultSetConcurrency() throws SQLException {
        nyi();
        return -1;
    }

    public int getResultSetType() throws SQLException {
        nyi();
        return -1;
    }

    public void cancel() throws SQLException {
        nyi();
    }

    public void clearWarnings() throws SQLException {
        nyi();
    }

    public void addBatch(String p0) throws SQLException {
        nyi();
    }

    public void clearBatch() throws SQLException {
        nyi();
    }

    public int[] executeBatch() throws SQLException {
        nyi();
        return null;
    }

    public ResultSet getGeneratedKeys() throws SQLException {
        nyi();
        return null;
    }

    public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
        nyi();
        return -1;
    }

    public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
        nyi();
        return -1;
    }

    public int executeUpdate(String sql, String[] columnNames) throws SQLException {
        nyi();
        return -1;
    }

    public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
        nyi();
        return false;
    }

    public boolean execute(String sql, int[] columnIndexes) throws SQLException

    {
        nyi();
        return false;
    }

    public boolean execute(String sql, String[] columnNames) throws SQLException {
        nyi();
        return false;

    }

    public int getResultSetHoldability() throws SQLException {
        nyi();
        return -1;
    }

    protected void nyi() throws SQLException {
        throw new SQLException("NYI");
    }

    public boolean isClosed() throws SQLException {
        return false;
    }

    public boolean isPoolable() throws SQLException {
        return false;
    }

    public void setPoolable(boolean poolable) throws SQLException {
    }

    public boolean isWrapperFor(Class<?> iface) throws SQLException {
        return false;
    }

    public <T> T unwrap(Class<T> iface) throws SQLException {
        return null;
    }

	public void closeOnCompletion() throws SQLException {
		throw new UnsupportedOperationException("Not supported yet.");
}

	public boolean isCloseOnCompletion() throws SQLException {
		throw new UnsupportedOperationException("Not supported yet.");
	}

}