Mercurial > hg > monetdb-java
changeset 728:0a22044eee9c
Optimize setBytes() implementation. For the 16 hex codes use a char[] and direct array indexing instead of a String and calling charAt().
| author | Martin van Dinther <martin.van.dinther@monetdbsolutions.com> |
|---|---|
| date | Thu, 02 Feb 2023 16:27:23 +0100 (2023-02-02) |
| parents | 55c14e65b4be |
| children | 6c9abd326ad2 |
| files | src/main/java/org/monetdb/jdbc/MonetPreparedStatement.java |
| diffstat | 1 files changed, 4 insertions(+), 3 deletions(-) [+] |
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--- a/src/main/java/org/monetdb/jdbc/MonetPreparedStatement.java +++ b/src/main/java/org/monetdb/jdbc/MonetPreparedStatement.java @@ -764,7 +764,7 @@ public class MonetPreparedStatement setValue(parameterIndex, Byte.toString(x)); } - static final String HEXES = "0123456789ABCDEF"; + static final char[] HEXES = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'}; /** * Sets the designated parameter to the given Java array of bytes. The * driver converts this to an SQL VARBINARY or LONGVARBINARY (depending @@ -787,8 +787,9 @@ public class MonetPreparedStatement hex.append("blob '"); // add a casting prefix // convert the bytes into hex codes for (int i = 0; i < len; i++) { - hex.append(HEXES.charAt((x[i] & 0xF0) >> 4)) - .append(HEXES.charAt((x[i] & 0x0F))); + byte b = x[i]; + hex.append(HEXES[(b & 0xF0) >> 4]) + .append(HEXES[(b & 0x0F)]); } hex.append("'"); // end of hex string value setValue(parameterIndex, hex.toString());