AMashenkov commented on a change in pull request #284: URL: https://github.com/apache/ignite-3/pull/284#discussion_r704248407
########## File path: modules/client/src/main/java/org/apache/ignite/internal/jdbc/JdbcResultSet.java ########## @@ -0,0 +1,1893 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.ignite.internal.jdbc; + +import java.io.InputStream; +import java.io.Reader; +import java.math.BigDecimal; +import java.math.RoundingMode; +import java.net.MalformedURLException; +import java.net.URL; +import java.nio.ByteBuffer; +import java.sql.Array; +import java.sql.Blob; +import java.sql.Clob; +import java.sql.Date; +import java.sql.NClob; +import java.sql.Ref; +import java.sql.ResultSet; +import java.sql.ResultSetMetaData; +import java.sql.RowId; +import java.sql.SQLException; +import java.sql.SQLFeatureNotSupportedException; +import java.sql.SQLWarning; +import java.sql.SQLXML; +import java.sql.Statement; +import java.sql.Time; +import java.sql.Timestamp; +import java.text.DecimalFormat; +import java.text.DecimalFormatSymbols; +import java.text.ParseException; +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalTime; +import java.util.Calendar; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.UUID; +import org.apache.ignite.client.proto.query.IgniteQueryErrorCode; +import org.apache.ignite.client.proto.query.JdbcQueryEventHandler; +import org.apache.ignite.client.proto.query.SqlStateCode; +import org.apache.ignite.client.proto.query.event.JdbcQueryCloseRequest; +import org.apache.ignite.client.proto.query.event.JdbcQueryCloseResult; +import org.apache.ignite.client.proto.query.event.JdbcQueryFetchRequest; +import org.apache.ignite.client.proto.query.event.JdbcQueryFetchResult; + +/** + * Jdbc result set implementation. + */ +public class JdbcResultSet implements ResultSet { + /** Decimal format to convert string to decimal. */ + private static final ThreadLocal<DecimalFormat> decimalFormat = new ThreadLocal<>() { + /** {@inheritDoc} */ + @Override protected DecimalFormat initialValue() { + DecimalFormatSymbols symbols = new DecimalFormatSymbols(); + + symbols.setGroupingSeparator(','); + symbols.setDecimalSeparator('.'); + + String ptrn = "#,##0.0#"; + + DecimalFormat decimalFormat = new DecimalFormat(ptrn, symbols); + + decimalFormat.setParseBigDecimal(true); + + return decimalFormat; + } + }; + + /** Statement. */ + private final JdbcStatement stmt; + + /** Cursor ID. */ + private final Long cursorId; + + /** Rows. */ + private List<List<Object>> rows; + + /** Rows iterator. */ + private Iterator<List<Object>> rowsIter; + + /** Current row. */ + private List<Object> curRow; + + /** Current position. */ + private int curPos; + + /** Finished flag. */ + private boolean finished; + + /** Closed flag. */ + private boolean closed; + + /** Was {@code NULL} flag. */ + private boolean wasNull; + + /** Fetch size. */ + private int fetchSize; + + /** Is query flag. */ + private boolean isQuery; + + /** Auto close server cursors flag. */ + private boolean autoClose; + + /** Update count. */ + private long updCnt; + + /** Close statement after close result set count. */ + private boolean closeStmt; + + /** Query request handler. */ + private JdbcQueryEventHandler qryHandler; + + /** + * Creates new result set. + * + * @param stmt Statement. + * @param cursorId Cursor ID. + * @param fetchSize Fetch size. + * @param finished Finished flag. + * @param rows Rows. + * @param isQry Is Result ser for Select query. + * @param autoClose Is automatic close of server cursors enabled. + * @param updCnt Update count. + * @param closeStmt Close statement on the result set close. + * @param qryHandler QueryEventHandler (local or remote). + */ + JdbcResultSet(JdbcStatement stmt, long cursorId, int fetchSize, boolean finished, + List<List<Object>> rows, boolean isQry, boolean autoClose, long updCnt, boolean closeStmt, JdbcQueryEventHandler qryHandler) { + assert stmt != null; + assert fetchSize > 0; + + this.qryHandler = qryHandler; + this.stmt = stmt; + this.cursorId = cursorId; + this.fetchSize = fetchSize; + this.finished = finished; + this.isQuery = isQry; + this.autoClose = autoClose; + this.closeStmt = closeStmt; + + if (isQuery) { + this.rows = rows; + + rowsIter = rows != null ? rows.iterator() : null; + } + else + this.updCnt = updCnt; + } + + /** {@inheritDoc} */ + @Override public boolean next() throws SQLException { + ensureNotClosed(); + + if ((rowsIter == null || !rowsIter.hasNext()) && !finished) { + JdbcQueryFetchResult res = qryHandler.fetch(new JdbcQueryFetchRequest(cursorId, fetchSize)); + + if (!res.hasResults()) + throw IgniteQueryErrorCode.createJdbcSqlException(res.err(), res.status()); + + rows = res.items(); + finished = res.last(); + + rowsIter = rows.iterator(); + } + + if (rowsIter != null) { + if (rowsIter.hasNext()) { + curRow = rowsIter.next(); + + curPos++; + + return true; + } + else { + rowsIter = null; + curRow = null; + + return false; + } + } + else + return false; + } + + /** {@inheritDoc} */ + @Override public void close() throws SQLException { + close0(); + + if (closeStmt) + stmt.closeIfAllResultsClosed(); + } + + /** + * Close result set. + * + * @throws SQLException On error. + */ + void close0() throws SQLException { + if (isClosed()) + return; + + try { + if (stmt != null && (!finished || (isQuery && !autoClose))) { + JdbcQueryCloseResult res = qryHandler.close(new JdbcQueryCloseRequest(cursorId)); + + if (!res.hasResults()) + throw IgniteQueryErrorCode.createJdbcSqlException(res.err(), res.status()); + } + } + finally { + closed = true; + } + } + + /** {@inheritDoc} */ + @Override public boolean wasNull() throws SQLException { + ensureNotClosed(); + ensureHasCurrentRow(); + + return wasNull; + } + + /** {@inheritDoc} */ + @Override public String getString(int colIdx) throws SQLException { + Object val = getValue(colIdx); + + return val == null ? null : String.valueOf(val); + } + + /** {@inheritDoc} */ + @Override public boolean getBoolean(int colIdx) throws SQLException { + Object val = getValue(colIdx); + + if (val == null) + return false; + + Class<?> cls = val.getClass(); + + if (cls == Boolean.class) + return ((Boolean)val); + else if (val instanceof Number) + return ((Number)val).intValue() != 0; + else if (cls == String.class || cls == Character.class) { + try { + return Integer.parseInt(val.toString()) != 0; + } + catch (NumberFormatException e) { + throw new SQLException("Cannot convert to boolean: " + val, SqlStateCode.CONVERSION_FAILED, e); Review comment: SQLDataException ? -- This is an automated message from the Apache Git Service. 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