+
−# ChangeLog file for monetdb-java
+
−# This file is updated with Maddlog
+
−
+
−* Thu Apr 29 2021 Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
+
−- Improved performance of ResultSetMetaData methods getPrecision(),
+
−  getScale(), isNullable() and isAutoIncrement(). The data is fetched
+
−  from the server by sending a query. This used to be one query for
+
−  each column of the ResultSet. Now these metadata queries are combined
+
−  into one query fetching this meta data for up to 50 columns in one query.
+
−  This reduces the number of queries sent to the server significantly.
+
−  This is noticable for instance when using generic JDBC query tools
+
−  such as SQuirreL, which now respond much faster.
+
−
+
−* Wed Mar  3 2021 Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
+
−- Implemented PreparedStatement.toString() as requested by
+
−  https://github.com/MonetDB/monetdb-java/issues/8
+
−
+
−* Wed Mar  3 2021 Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
+
−- Implemented fix for released monetdb-jdbc-3.0.jre8.jar and
+
−  monetdb-mcl-1.19.jre8.jar when it is was run using java build 1.8.0_###.
+
−  It would throw:
+
−  java.lang.NoSuchMethodError: java.nio.CharBuffer.mark()Ljava/nio/CharBuffer;
+
−  at org.monetdb.mcl.parser.StartOfHeaderParser.getNextAsString(Unknown Source)
+
−  at org.monetdb.jdbc.MonetConnection$ResponseList.executeQuery(Unknown Source)
+
−  at org.monetdb.jdbc.MonetConnection$ResponseList.processQuery(Unknown Source)
+
−  at org.monetdb.jdbc.MonetStatement.internalExecute(Unknown Source)
+
−  at org.monetdb.jdbc.MonetStatement.execute(Unknown Source)
+
−  The problem is caused by a change in java.nio.CharBuffer API (return
+
−  types of methods mark() and reset() have changed from Buffer to
+
−  CharBuffer) from Java 8 to Java 9+.
+
−
+
−For a complete list of changes in previous monetdb-java releases see:
+
−  https://www.monetdb.org/downloads/Java/archive/ChangeLog-Archive