From d262e1c3f4671673a02ea402366a8c9b93fe4e53 Mon Sep 17 00:00:00 2001
From: danielhanrahan <daniel.hanrahan@est.tech>
Date: Wed, 27 Nov 2024 15:38:41 +0000
Subject: [Cps Path Parser] Introduce Attribute axis

Add grammar and tests for attribute-axis to match cps paths like:

  //books/@title

which should return the titles of all books (a subsequent patch will
implement the logic). The syntax is compatible with XPath standard.

Issue-ID: CPS-2416
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I25164b23670147c504f0f0f6c0cc8ff15997f2a3
---
 .../main/java/org/onap/cps/cpspath/parser/CpsPathBuilder.java  |  7 +++++++
 .../main/java/org/onap/cps/cpspath/parser/CpsPathQuery.java    | 10 ++++++++++
 2 files changed, 17 insertions(+)

(limited to 'cps-path-parser/src/main/java')

diff --git a/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathBuilder.java b/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathBuilder.java
index b67d70847c..d0deb7defc 100644
--- a/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathBuilder.java
+++ b/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathBuilder.java
@@ -130,6 +130,13 @@ public class CpsPathBuilder extends CpsPathBaseListener {
                 normalizedXpathBuilder.substring(startIndexOfAncestorSchemaNodeIdentifier));
     }
 
+    @Override
+    public void exitAttributeAxis(final CpsPathParser.AttributeAxisContext ctx) {
+        final String attributeName = ctx.leafName().getText();
+        normalizedXpathBuilder.append("/@").append(attributeName);
+        cpsPathQuery.setAttributeAxisAttributeName(attributeName);
+    }
+
     @Override
     public void exitTextFunctionCondition(final TextFunctionConditionContext ctx) {
         cpsPathQuery.setTextFunctionConditionLeafName(ctx.leafName().getText());
diff --git a/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathQuery.java b/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathQuery.java
index 03602b64f6..3612ec57fb 100644
--- a/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathQuery.java
+++ b/cps-path-parser/src/main/java/org/onap/cps/cpspath/parser/CpsPathQuery.java
@@ -40,6 +40,7 @@ public class CpsPathQuery {
     private String descendantName;
     private List<LeafCondition> leafConditions;
     private String ancestorSchemaNodeIdentifier = "";
+    private String attributeAxisAttributeName = "";
     private String textFunctionConditionLeafName;
     private String textFunctionConditionValue;
     private List<String> booleanOperators;
@@ -65,6 +66,15 @@ public class CpsPathQuery {
         return !(ancestorSchemaNodeIdentifier.isEmpty());
     }
 
+    /**
+     * Has attribute axis been included in cpsPath.
+     *
+     * @return boolean value.
+     */
+    public boolean hasAttributeAxis() {
+        return !(attributeAxisAttributeName.isEmpty());
+    }
+
     /**
      * Have leaf value conditions been included in cpsPath.
      *
-- 
cgit