Further changes as requested

* Removed object handling while building the array
* inlined property names streaming.

.gitignore

@@ -157,3 +157,4 @@ $RECYCLE.BIN/
 *.lnk
 
 
+/test-output/

src/main/java/com/kumuluz/ee/config/microprofile/ConfigImpl.java

@@ -31,7 +31,6 @@
 import java.util.logging.Logger;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
 import org.eclipse.microprofile.config.Config;
 import org.eclipse.microprofile.config.spi.ConfigSource;
@@ -155,20 +154,11 @@ private <T> Converter<T> getConverter(Class asType) {
 
 	@Override
 	public Iterable<String> getPropertyNames() {
-		return this.configSources.stream().flatMap(this::asStream).collect(Collectors.toSet());
+		return this.configSources.stream().flatMap(e -> e.getPropertyNames().stream()).collect(Collectors.toSet());
 	}
 
 	@Override
 	public Iterable<ConfigSource> getConfigSources() {
 		return this.configSources;
 	}
-
-	/**
-	 * Streams this config source as property names
-	 * @param arg0 config source to stream
-	 * @return stream of property names, never null
-	 */
-	private Stream<String> asStream(ConfigSource arg0) {
-		return arg0.getPropertyNames().stream();
-	}
 }

src/main/java/com/kumuluz/ee/config/microprofile/adapters/ConfigSourceAdapter.java

@@ -24,7 +24,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import java.util.stream.Collectors;
 
 import org.eclipse.microprofile.config.spi.ConfigSource;
 
@@ -61,12 +60,15 @@ public int getOrdinal() {
     @Override
     public String getValue(String s) {
     	String val = configurationSource.get(s).orElse(null);
-        Optional<Integer> listSize = this.configurationSource.getListSize(s);
-
-        //this is a list or an array
-    	if (listSize.isPresent()) {
-    		//we ignore the returned value and build the array
-            return buildArray(s, listSize.get());
+
+    	if (val != null) {
+	        Optional<Integer> listSize = this.configurationSource.getListSize(s);
+
+	        //this is a list or an array
+	    	if (listSize.isPresent()) {
+	    		//we ignore the returned value and build the array
+	            return buildArray(s, listSize.get());
+	    	}
     	}
 
         return val;
@@ -112,16 +114,9 @@ private String buildArray(String propertyName, int size) {
 			String prefix = String.format("%s[%d]", propertyName, i);
 	        Optional<List<String>> objectKeys = this.configurationSource.getMapKeys(prefix);
 
-	        //array item is an object, so we just toString() it
+	        //array item is an object, so we just omit it
 	        if (objectKeys.isPresent()) {
-	            Map<String, String> map = new HashMap<>();
-	        	buildPropertiesMap(map, prefix);
-
-	    		Map<String, String> object =
-	    				map.entrySet().stream().collect(Collectors.toMap(e -> e.getKey().substring(prefix.length() + 1),
-	    						e -> e.getValue()));
-
-	        	sb.append(object.toString().replaceAll(",", "\\\\,"));
+	        	sb.append("");
 	        }
 	        else {
 				Optional<String> item = this.configurationSource.get(String.format("%s[%d]", propertyName, i));

src/test/java/com/kumuluz/ee/config/microprofile/tests/ArrayInjectionTest.java

@@ -76,7 +76,7 @@ public static JavaArchive deploy() {
 	private String arrayItemParam;
 
 	private static final String[] TEST_TARGET =
-			new String[]{"one ", " two", " [three, four] ", "{five.six=seven, five.eight=nine}"};
+			new String[]{"one ", " two", " [three, four] "};
 
     @Test
     public void testNotParsingDelimeters() {