java/sql-dk/src/info/globalcode/sql/dk/formatting/Formatter.java
author František Kučera <franta-hg@frantovo.cz>
Sat, 16 May 2015 23:58:06 +0200
branchv_0
changeset 191 862d0a8747ac
parent 155 eb3676c6929b
permissions -rw-r--r--
avoid NullPointerException (value = null) while duplicating to java.util.Properties
     1 /**
     2  * SQL-DK
     3  * Copyright © 2013 František Kučera (frantovo.cz)
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, either version 3 of the License, or
     8  * (at your option) any later version.
     9  *
    10  * This program is distributed in the hope that it will be useful,
    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  * GNU General Public License for more details.
    14  *
    15  * You should have received a copy of the GNU General Public License
    16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 package info.globalcode.sql.dk.formatting;
    19 
    20 import info.globalcode.sql.dk.Parameter;
    21 import info.globalcode.sql.dk.configuration.DatabaseDefinition;
    22 import java.util.List;
    23 
    24 /**
    25  * The formatter is responsible for printing the result sets and/or updates result (count of
    26  * inserted/updated rows). The formatter can produce output in arbitrary format – text, some markup
    27  * or even binary data.
    28  *
    29  * @author Ing. František Kučera (frantovo.cz)
    30  */
    31 public interface Formatter extends AutoCloseable {
    32 
    33 	void writeStartBatch();
    34 
    35 	void writeStartDatabase(DatabaseDefinition databaseDefinition);
    36 
    37 	void writeEndDatabase();
    38 
    39 	void writeStartStatement();
    40 
    41 	void writeEndStatement();
    42 
    43 	void writeQuery(String sql);
    44 
    45 	void writeParameters(List<? extends Parameter> parameters);
    46 
    47 	void writeStartResultSet(ColumnsHeader header);
    48 
    49 	void writeEndResultSet();
    50 
    51 	void writeStartRow();
    52 
    53 	void writeColumnValue(Object value);
    54 
    55 	void writeEndRow();
    56 
    57 	void writeUpdatesResult(int updatedRowsCount);
    58 
    59 	void writeEndBatch();
    60 
    61 	/**
    62 	 * If an error occurs (e.g. lost connection during result set reading) this method will be
    63 	 * called even if there was no {@linkplain #writeEndBach()}.
    64 	 */
    65 	@Override
    66 	void close() throws FormatterException;
    67 }