Add modern JDBC driver support (ojdbc17, ojdbc11, ojdbc8)

Build the JDBC driver search list based on the running Java major
version so that only compatible jars are tried, in priority order
preferring the newest driver. Older drivers are still searched as
fallbacks since they run on newer Java versions.

- ojdbc17.jar for Java 17+
- ojdbc11.jar for Java 11+
- ojdbc8.jar for Java 8+

Use Regexp.union to escape dots in jar name matching to avoid
unintended classpath matches.

Ref: https://www.oracle.com/database/technologies/appdev/jdbc-downloads.html

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: yahonda

README.md

@@ -154,7 +154,7 @@ In addition install either ruby-oci8 (for MRI/YARV) or copy Oracle JDBC driver t
 If you are using MRI Ruby implementation then you need to install ruby-oci8 gem (version 2.1 or higher)
 as well as Oracle client, e.g. [Oracle Instant Client](http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html).
 
-If you are using JRuby then you need to download latest [Oracle JDBC driver](http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-112010-090769.html) - either ojdbc7.jar for Java 8 and 7, ojdbc6.jar for Java 6, 7, 8 or ojdbc5.jar for Java 5. You can refer [the support matrix](http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-faq-090281.html#01_03) for details.
+If you are using JRuby then you need to download latest [Oracle JDBC driver](https://www.oracle.com/database/technologies/appdev/jdbc-downloads.html) - ojdbc17.jar for Java 17+, ojdbc11.jar for Java 11+, or ojdbc8.jar for Java 8+.
 
 And copy this file to one of these locations. JDBC driver will be searched in this order:
 

lib/plsql/jdbc_connection.rb

@@ -2,22 +2,24 @@
   require "java"
   require "jruby"
 
-  # ojdbc6.jar or ojdbc5.jar file should be in JRUBY_HOME/lib or should be in ENV['PATH'] or load path
+  # Oracle JDBC driver jar should be in JRUBY_HOME/lib or should be in ENV['PATH'] or load path
 
   java_version = java.lang.System.getProperty("java.version")
-  ojdbc_jars = if java_version =~ /^1.5/
-    %w(ojdbc5.jar)
-  elsif java_version =~ /^1.6/
-    %w(ojdbc6.jar)
-  elsif java_version >= "1.7"
-    # Oracle 11g client ojdbc6.jar is also compatible with Java 1.7
-    # Oracle 12c client provides new ojdbc7.jar
-    %w(ojdbc7.jar ojdbc6.jar)
+  java_major = if java_version =~ /^1\.(\d+)/
+    $1.to_i
   else
-    []
+    java_version.to_i
   end
 
-  if ENV_JAVA["java.class.path"] !~ Regexp.new(ojdbc_jars.join("|"))
+  ojdbc_jars = []
+  ojdbc_jars << "ojdbc17.jar" if java_major >= 17
+  ojdbc_jars << "ojdbc11.jar" if java_major >= 11
+  ojdbc_jars << "ojdbc8.jar"  if java_major >= 8
+  ojdbc_jars << "ojdbc7.jar"  if java_major >= 7
+  ojdbc_jars << "ojdbc6.jar"  if java_major >= 6
+  ojdbc_jars << "ojdbc5.jar"  if java_major == 5
+
+  if ENV_JAVA["java.class.path"] !~ Regexp.union(ojdbc_jars)
     # On Unix environment variable should be PATH, on Windows it is sometimes Path
     env_path = (ENV["PATH"] || ENV["Path"] || "").split(File::PATH_SEPARATOR)
     # Look for JDBC driver at first in lib subdirectory (application specific JDBC file version)