[feature] A new and improved 'exist:time' XQuery pragma. Backported from FusionDB

Author: adamretter

exist-core/pom.xml

@@ -758,6 +758,7 @@
                                 <exclude>src/test/java/org/exist/xquery/functions/session/AttributeTest.java</exclude>
                                 <exclude>src/test/java/org/exist/xquery/functions/xmldb/XMLDBAuthenticateTest.java</exclude>
                                 <exclude>src/main/java/org/exist/xquery/functions/util/Eval.java</exclude>
+                                <exclude>src/main/java/org/exist/xquery/pragmas/TimePragma.java</exclude>
                                 <exclude>src/test/java/org/exist/xquery/util/URIUtilsTest.java</exclude>
                                 <exclude>src/main/java/org/exist/xquery/value/ArrayListValueSequence.java</exclude>
                                 <exclude>src/test/java/org/exist/xquery/value/BifurcanMapTest.java</exclude>
@@ -918,6 +919,7 @@ The original license statement is also included below.]]></preamble>
                                 <include>src/test/java/org/exist/xquery/functions/session/AttributeTest.java</include>
                                 <include>src/test/java/org/exist/xquery/functions/xmldb/XMLDBAuthenticateTest.java</include>
                                 <include>src/main/java/org/exist/xquery/functions/util/Eval.java</include>
+                                <include>src/main/java/org/exist/xquery/pragmas/TimePragma.java</include>
                                 <include>src/test/java/org/exist/xquery/util/URIUtilsTest.java</include>
                                 <include>src/main/java/org/exist/xquery/value/ArrayListValueSequence.java</include>
                                 <include>src/test/java/org/exist/xquery/value/BifurcanMapTest.java</include>

exist-core/src/main/java/org/exist/xquery/Option.java

@@ -28,6 +28,8 @@
 import org.exist.Namespaces;
 import org.exist.dom.QName;
 
+import javax.annotation.Nullable;
+
 /**
  * Represents an XQuery option declared via "declare option".
  * 
@@ -89,9 +91,9 @@ public static String[] tokenize(final String contents) {
 		return items;
     }
 
-    public static String[] parseKeyValuePair(final String s) {
+    public static @Nullable String[] parseKeyValuePair(final String s) {
         final Matcher matcher = pattern.matcher(s);
-		if(matcher.matches()) {
+		if (matcher.matches()) {
 			String value = matcher.group(2);
 			if(value.charAt(0) == '\'' || value.charAt(0) == '"') {
 				value = value.substring(1, value.length() - 1);