Bugs fixed:
Use 1MB packet for sending file for
LOAD DATA LOCAL
INFILE
if that is <
max_allowed_packet
on server.
(Bug#6537)
SUM()
on
DECIMAL
with server-side prepared
statement ignores scale if zero-padding is needed (this ends up
being due to conversion to DOUBLE
by server, which when converted to a string to parse into
BigDecimal
, loses all “padding”
zeros).
(Bug#6537)
Use
DatabaseMetaData.getIdentifierQuoteString()
when building DBMD queries.
(Bug#6537)
Use our own implementation of buffered input streams to get
around blocking behavior of
java.io.BufferedInputStream
. Disable this
with useReadAheadInput=false
.
(Bug#6399)
Make auto-deserialization of
java.lang.Objects
stored in
BLOB
columns configurable via
autoDeserialize
property (defaults to
false
).
(Bug#6399)
ResultSetMetaData.getColumnDisplaySize()
returns incorrect values for multi-byte charsets.
(Bug#6399)
Re-work Field.isOpaqueBinary()
to detect
CHAR(
to support fixed-length binary fields for
n
) CHARACTER SET
BINARYResultSet.getObject()
.
(Bug#6399)
Failing to connect to the server when one of the addresses for
the given host name is IPV6 (which the server does not yet bind
on). The driver now loops through all IP
addresses for a given host, and stops on the first one that
accepts()
a
socket.connect()
.
(Bug#6348)
Removed unwanted new Throwable()
in
ResultSet
constructor due to bad merge
(caused a new object instance that was never used for every
result set created). Found while profiling for Bug#6359.
(Bug#6225)
ServerSidePreparedStatement
allocating
short-lived objects unnecessarily.
(Bug#6225)
Use null-safe-equals for key comparisons in updatable result sets. (Bug#6225)
Fixed too-early creation of StringBuffer
in
EscapeProcessor.escapeSQL()
, also return
String
when escaping not needed (to avoid
unnecessary object allocations). Found while profiling for Bug#6359.
(Bug#6225)
UNSIGNED BIGINT
unpacked incorrectly from
server-side prepared statement result sets.
(Bug#5729)
Added experimental configuration property
dontUnpackBinaryResults
, which delays
unpacking binary result set values until they're asked for, and
only creates object instances for nonnumerical values (it is set
to false
by default). For some usecase/jvm
combinations, this is friendlier on the garbage collector.
(Bug#5706)
Don't throw exceptions for
Connection.releaseSavepoint()
.
(Bug#5706)
Inefficient detection of pre-existing string instances in
ResultSet.getNativeString()
.
(Bug#5706)
Use a per-session Calendar
instance by
default when decoding dates from
ServerPreparedStatements
(set to old, less
performant behavior by setting property
dynamicCalendars=true
).
(Bug#5706)
Fixed batched updates with server prepared statements weren't looking if the types had changed for a given batched set of parameters compared to the previous set, causing the server to return the error “Wrong arguments to mysql_stmt_execute()”. (Bug#5235)
Handle case when string representation of timestamp contains
trailing “.
” with no numbers
following it.
(Bug#5235)
Server-side prepared statements did not honor
zeroDateTimeBehavior
property, and would
cause class-cast exceptions when using
ResultSet.getObject()
, as the all-zero string
was always returned.
(Bug#5235)
Fix comparisons made between string constants and dynamic
strings that are converted with either
toUpperCase()
or
toLowerCase()
to use
Locale.ENGLISH
, as some locales
“override” case rules for English. Also use
StringUtils.indexOfIgnoreCase()
instead of
.toUpperCase().indexOf()
, avoids creating a
very short-lived transient String
instance.
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