PWC 287

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

2 files changed, 125 insertions, 0 deletions

diff --git a/challenge-287/luca-ferrari/pljava/src/main/java/Task1.java b/challenge-287/luca-ferrari/pljava/src/main/java/Task1.java
new file mode 100644
index 0000000000..8990641a74
--- /dev/null
+++ b/challenge-287/luca-ferrari/pljava/src/main/java/Task1.java
@@ -0,0 +1,67 @@
+
+
+
+package PWC287;
+
+/**
+ * PL/Java implementation for PWC 287
+ * Task 1
+ * See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-287>
+ *
+ *
+ * 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/PWC287-1.jar  luca@rachel:/tmp
+
+
+ * To install into PostgreSQL execute:
+
+ select sqlj.install_jar( 'file:///tmp/PWC287-1.jar', 'PWC287', true );
+ select sqlj.set_classpath( 'public', 'PWC287' );
+
+ select pwc287.task2_pljava();
+
+ and then to redeploy:
+
+ select sqlj.replace_jar( 'file:///tmp/PWC287-1.jar', 'PWC287', 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;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class Task1 {
+
+    private final static Logger logger = Logger.getAnonymousLogger();
+
+    @Function( schema = "pwc287",
+	       onNullInput = RETURNS_NULL,
+	       effects = IMMUTABLE )
+    public static final boolean task1_pljava( String password ) throws SQLException {
+	if ( password.length() < 6 )
+	    return false;
+
+	Pattern lowerCase   = Pattern.compile( "[a-z]" );
+	Pattern upperCase   = Pattern.compile( "[A-Z]" );
+	Pattern digit       = Pattern.compile( "[0-9]" );
+	Pattern repetitions = Pattern.compile( "(.)\\1\\1" );
+
+	return lowerCase.matcher( password ).find()
+	    && upperCase.matcher( password ).find()
+	    && digit.matcher( password ).find()
+	    && ! repetitions.matcher( password ).find();
+    }
+}
diff --git a/challenge-287/luca-ferrari/pljava/src/main/java/Task2.java b/challenge-287/luca-ferrari/pljava/src/main/java/Task2.java
new file mode 100644
index 0000000000..0c3a926c16
--- /dev/null
+++ b/challenge-287/luca-ferrari/pljava/src/main/java/Task2.java
@@ -0,0 +1,58 @@
+
+
+
+package PWC287;
+
+/**
+ * PL/Java implementation for PWC 287
+ * Task 2
+ * See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-287>
+ *
+ *
+ * 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/PWC287-1.jar  luca@rachel:/tmp
+
+
+ * To install into PostgreSQL execute:
+
+ select sqlj.install_jar( 'file:///tmp/PWC287-1.jar', 'PWC287', true );
+ select sqlj.set_classpath( 'public', 'PWC287' );
+
+ select pwc287.task2_pljava();
+
+ and then to redeploy:
+
+ select sqlj.replace_jar( 'file:///tmp/PWC287-1.jar', 'PWC287', 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;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+
+public class Task2 {
+
+    private final static Logger logger = Logger.getAnonymousLogger();
+
+    @Function( schema = "pwc287",
+	       onNullInput = RETURNS_NULL,
+	       effects = IMMUTABLE )
+    public static final boolean task2_pljava( String number ) throws SQLException {
+	Pattern numberRegexp = Pattern.compile( "^[+-]?\\d+([.]\\d+)?(E[+-]?\\d+)?$" );
+	return numberRegexp.matcher( number ).find();
+    }
+}