Introducing Antlr4 for cpsPath parsing

-created new module for cpPathParser
-added antlr rule for cpsPathWithSingleLeafCondition
-added antlr rule for cpsPathWithDescendant (and with leaf conditions)
-added antlr rule for ancestor axis
-added unit test (copied from existing CpsPathQuerySpec)
-udpated cps-ri to use new cpPathQuery from parser module
-'imported' lexer rules from publix xPath grammar
-Re-used existing CpsPathException but conversion happens in cps-ri to prevent additional dependency in cps-path-parser module

Issue-ID: CPS-376

Change-Id: I2c5df98969402cbf69f6573c52705879450ce606
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>

1 files changed, 4 insertions, 3 deletions

diff --git a/cps-service/src/main/java/org/onap/cps/spi/exceptions/CpsPathException.java b/cps-service/src/main/java/org/onap/cps/spi/exceptions/CpsPathException.java
index fde5566b1..f1e8dc525 100644
--- a/cps-service/src/main/java/org/onap/cps/spi/exceptions/CpsPathException.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/exceptions/CpsPathException.java
@@ -23,13 +23,14 @@ public class CpsPathException extends CpsException {
 
     private static final long serialVersionUID = 1006899957127327791L;
 
+    private static final String ERROR_MESSAGE = "Error while parsing cpsPath expression";
+
     /**
      * Constructor.
      *
-     * @param message the error message
      * @param details the error details
      */
-    public CpsPathException(final String message, final String details) {
-        super(message, details);
+    public CpsPathException(final String details) {
+        super(ERROR_MESSAGE, details);
     }
 }