diff options
Diffstat (limited to 'challenge-332/luca-ferrari/pljava/src/main/java/Task2.java')
| -rw-r--r-- | challenge-332/luca-ferrari/pljava/src/main/java/Task2.java | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/challenge-332/luca-ferrari/pljava/src/main/java/Task2.java b/challenge-332/luca-ferrari/pljava/src/main/java/Task2.java new file mode 100644 index 0000000000..68cdd17f79 --- /dev/null +++ b/challenge-332/luca-ferrari/pljava/src/main/java/Task2.java @@ -0,0 +1,66 @@ + + + +package PWC332; + +/** + * PL/Java implementation for PWC 332 + * Task 2 + * See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-332> + * + * + * To compile on the local machine: + + $ export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64/ # if not already set + $ mvn clean build + $ scp target/PWC332-1.jar luca@rachel:/tmp + + + * To install into PostgreSQL execute: + + select sqlj.install_jar( 'file:///tmp/PWC332-1.jar', 'PWC332', true ); + select sqlj.set_classpath( 'public', 'PWC332' ); + + select pwc332.task2_pljava(); + + and then to redeploy: + + select sqlj.replace_jar( 'file:///tmp/PWC332-1.jar', 'PWC332', true ); + +*/ + +import org.postgresql.pljava.*; +import org.postgresql.pljava.annotation.Function; +import static org.postgresql.pljava.annotation.Function.Effects.IMMUTABLE; +import static org.postgresql.pljava.annotation.Function.OnNullInput.RETURNS_NULL; + +import java.util.*; +import java.util.stream.*; +import java.sql.SQLException; +import java.util.logging.*; +import java.sql.ResultSet; +import java.sql.Date; + +public class Task2 { + + private final static Logger logger = Logger.getAnonymousLogger(); + + @Function( schema = "pwc332", + onNullInput = RETURNS_NULL, + effects = IMMUTABLE ) + public static final String task2_pljava( String date ) throws SQLException { + logger.log( Level.INFO, "Entering pwc332.task2_pljava" ); + + String result = ""; + int dashes = 2; + for ( String current : date.split( "-" ) ) { + result += Integer.toBinaryString( Integer.parseInt( current ) ); + if ( dashes > 0 ) { + result += "-"; + dashes--; + } + } + + return result; + } +} |
