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package PWC331;
/**
* PL/Java implementation for PWC 331
* Task 1
* See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-331>
*
*
* 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/PWC331-1.jar luca@rachel:/tmp
* To install into PostgreSQL execute:
select sqlj.install_jar( 'file:///tmp/PWC331-1.jar', 'PWC331', true );
select sqlj.set_classpath( 'public', 'PWC331' );
select pwc331.task2_pljava();
and then to redeploy:
select sqlj.replace_jar( 'file:///tmp/PWC331-1.jar', 'PWC331', 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 = "pwc331",
onNullInput = RETURNS_NULL,
effects = IMMUTABLE )
public static int task1_pljava( String sentence ) throws SQLException {
logger.log( Level.INFO, "Entering pwc331.task1_pljava" );
int length = 0;
for ( String s : sentence.split( "\\s+" ) ) {
s = s.trim();
if ( s.length() == 0 )
continue;
length = s.length();
}
return length;
}
}
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