Initial string support for FG;

Author: Dan-RAI

README.md

@@ -28,7 +28,12 @@ For installation, execute
 make install
 ```
 
-Java settings can be set in `postgres.conf` via the following options:
+Pre-load the library via adding to `postgresql.conf`:
+```
+shared_preload_libraries = '$libdir/plunijava'
+```
+
+Java settings can be set via the following options:
 ```
 pluj.libjvm = '/jdk-path/lib/server/libjvm.so'
 pluj.jvmoptions = '-Djava.class.path=' 

java/src/ai/sedn/plunijava/Tests.java

@@ -97,6 +97,17 @@ public static double test_double4(double[][] in) throws SQLException {
 		return ret;
 	}
 
+	/*
+	 * String
+	 */
+	public static String test_string1(String in) throws SQLException {
+		return in;
+	}
+	
+	public static String test_string2(String[] in) throws SQLException {
+		return in[0];
+	}
+	
 	/*
 	 * Complex types
 	 */
@@ -118,6 +129,13 @@ public static TestType1 test_complextype2(TestType1[] in) {
 		return R;
 	}
 
+	public static TestType2 test_complextype3(TestType2 in) {
+		TestType2 R = new TestType2();
+		R.A = in.A;
+
+		return R;
+	}
+
 	/*
 	 * Setof return
 	 */

plunijava--test.sql

@@ -67,6 +67,15 @@ SELECT f_test_double4('{{1.23,2.2,3.,4.23,5.2},{5.6,4.45,3.3434,2.3,1.3}}');
 SELECT b_test_double4('{{6.,5.34,4.1,3.434,2.4,1.23},{1.75,2.354,3.34,4.2,5.4,6.64}}');
 SELECT g_test_double4('{{1.1,2.24,2.232,1.1},{1.4,2.23,2.65,1.676}}');
 
+--string
+CREATE OR REPLACE FUNCTION f_test_string1(text) RETURNS text AS 'F|ai/sedn/plunijava/Tests|test_string1|(Ljava/lang/String;)Ljava/lang/String;' LANGUAGE UJAVA;
+
+SELECT f_test_string1('HELLO WORLD!');
+
+CREATE OR REPLACE FUNCTION f_test_string2(text[]) RETURNS text AS 'F|ai/sedn/plunijava/Tests|test_string2|([Ljava/lang/String;)Ljava/lang/String;' LANGUAGE UJAVA;
+
+SELECT f_test_string2(ARRAY['1. HELLO WORLD!','2. HELLO WORLD!']);
+
 --complex types
 CREATE TYPE TESTTYPE1 as (A int, B float8);
 
@@ -86,6 +95,12 @@ SELECT f_test_complextype2(ARRAY[(1,0.1)::TESTTYPE1]);
 SELECT b_test_complextype2(ARRAY[(2,0.2)::TESTTYPE1]);
 SELECT g_test_complextype2(ARRAY[(3,0.3)::TESTTYPE1]);
 
+CREATE TYPE TESTTYPE2 as (A text);
+CREATE OR REPLACE FUNCTION f_test_complextype3(TESTTYPE2) RETURNS TESTTYPE2 AS 'F|ai/sedn/plunijava/Tests|test_complextype3|(Lai/sedn/plunijava/TestType2;)Lai/sedn/plunijava/TestType2;' LANGUAGE UJAVA;
+
+SELECT f_test_complextype3('("HELLO WORLD!")'::TESTTYPE2);
+
+
 --setof
 CREATE OR REPLACE FUNCTION f_test_setof1(TESTTYPE1[]) RETURNS SETOF TESTTYPE1 AS 'F|ai/sedn/plunijava/Tests|test_setof1|([Lai/sedn/plunijava/TestType1;)Ljava/util/Iterator;' LANGUAGE UJAVA;
 
@@ -102,4 +117,5 @@ SELECT f_test_njdbc1();
 --Cleanup
 DROP TABLE test_table1;
 DROP TYPE TESTTYPE1 CASCADE;
+DROP TYPE TESTTYPE2 CASCADE;
 DROP EXTENSION PLUNIJAVA CASCADE;