author | František Kučera <franta-hg@frantovo.cz> |
Mon, 04 Mar 2019 17:06:42 +0100 | |
branch | v_0 |
changeset 237 | 7e08730da258 |
parent 176 | java/jdbc-loopback-driver/src/info/globalcode/jdbc/loopback/PreparedStatement.java@9aa00e214020 |
child 250 | aae5009bd0af |
permissions | -rw-r--r-- |
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/** |
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* SQL-DK |
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* Copyright © 2014 František Kučera (frantovo.cz) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package info.globalcode.jdbc.loopback; |
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|
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import java.sql.SQLException; |
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import java.sql.SQLWarning; |
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import java.sql.Types; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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/** |
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* |
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* @author Ing. František Kučera (frantovo.cz) |
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*/ |
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public class PreparedStatement extends AbstractPreparedStatement { |
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private final Map<Integer, ObjectParameter> parameters = new HashMap<>(); |
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private List<Object[]> table; |
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private final ResultSetMetaData metadata = new ResultSetMetaData(); |
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@Override |
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public void setObject(int parameterNumber, Object data, int targetSqlType) throws SQLException { |
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parameters.put(parameterNumber, new ObjectParameter(data, targetSqlType)); |
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} |
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@Override |
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public boolean execute() throws SQLException { |
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if (parameters.size() < 1) { |
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throw new SQLException("Missing first parameter (column count)"); |
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} else { |
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int columnCount = Integer.valueOf(String.valueOf(parameters.get(1).getData())); |
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for (int i = 0; i < columnCount; i++) { |
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String label = parameters.get(1 + i + 1).getData().toString(); |
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metadata.addColumn(new ResultSetMetaData.ColumnDescriptor(Types.VARCHAR, "VARCHAR", label, label)); |
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} |
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int cellIndex = 0; |
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table = new ArrayList<>(); |
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Object[] currentRow = null; |
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for (int parameterNumber = (1 + columnCount + 1); true; parameterNumber++) { |
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ObjectParameter data = parameters.get(parameterNumber); |
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if (data == null) { |
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break; |
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} else { |
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int columnIndex = cellIndex % columnCount; |
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cellIndex++; |
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if (columnIndex == 0) { |
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currentRow = new Object[columnCount]; |
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table.add(currentRow); |
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} |
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currentRow[columnIndex] = data.getData(); |
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} |
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} |
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return true; |
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} |
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} |
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@Override |
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public java.sql.ResultSet getResultSet() throws SQLException { |
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return new ResultSet(metadata, table); |
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} |
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@Override |
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public int getUpdateCount() throws SQLException { |
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return -1; |
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} |
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@Override |
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public boolean getMoreResults() throws SQLException { |
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return false; |
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} |
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@Override |
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public void close() throws SQLException { |
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} |
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@Override |
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public SQLWarning getWarnings() throws SQLException { |
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return null; |
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} |
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@Override |
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public void clearWarnings() throws SQLException { |
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} |
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} |