From 3dc7347c37e5c52da5e3a3a8c76a785a1ca9f3af Mon Sep 17 00:00:00 2001 From: Luca Ferrari Date: Tue, 26 Mar 2024 10:58:41 +0100 Subject: PWC 262 Task 1 Raku done Task 2 Raku done Task 1 PL/Perl done Task 2 PL/Perl done Task 1 PL/PgSQL done Task 2 PL/PgSQL done Task 1 PL/Java done Task 2 PL/Java done Task 1 Python done Task 2 Python done --- .../luca-ferrari/pljava/src/main/java/Task1.java | 66 ++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 challenge-262/luca-ferrari/pljava/src/main/java/Task1.java (limited to 'challenge-262/luca-ferrari/pljava/src/main/java/Task1.java') diff --git a/challenge-262/luca-ferrari/pljava/src/main/java/Task1.java b/challenge-262/luca-ferrari/pljava/src/main/java/Task1.java new file mode 100644 index 0000000000..02e1474d67 --- /dev/null +++ b/challenge-262/luca-ferrari/pljava/src/main/java/Task1.java @@ -0,0 +1,66 @@ + + + +package PWC262; + +/** + * PL/Java implementation for PWC 262 + * Task 1 + * See + * + * + * 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/PWC262-1.jar luca@rachel:/tmp + + + * To install into PostgreSQL execute: + + select sqlj.install_jar( 'file:///tmp/PWC262-1.jar', 'PWC262', true ); + select sqlj.set_classpath( 'public', 'PWC262' ); + + select pwc262.task2_pljava(); + + and then to redeploy: + + select sqlj.replace_jar( 'file:///tmp/PWC262-1.jar', 'PWC262', 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 Task1 { + + private final static Logger logger = Logger.getAnonymousLogger(); + + @Function( schema = "pwc262", + onNullInput = RETURNS_NULL, + effects = IMMUTABLE ) + public static final int task1_pljava( int[] nums ) throws SQLException { + logger.log( Level.INFO, "Entering pwc262.task1_pljava" ); + + int positives = 0; + int negatives = 0; + + for ( int current : nums ) + if ( current >= 0 ) + positives++; + else + negatives++; + + return positives >= negatives ? positives : negatives; + + } +} -- cgit