[GIE Compiler] Fix query params of getV base in path expand operator (#…

…2773)

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## What do these changes do?
In the cypher statement `(a:person)-[b:knows]-(c:person)` that
represents a path expansion, the logical plan includes two `getV`
operators. One is `getV` base inner the `path_expand` b, another is the
`endV` operator following the b. It's important to note that these
operators have different query parameters.

The `getV` base can retrieve vertices of any type that are adjacent to
the type specified in the `path_expand` operation. **This pr
specifically addresses this requirement**. The `endV` operator is
constrained by the type specified in the given query.
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## Related issue number

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change? -->

Fixes

Co-authored-by: Longbin Lai <longbin.lailb@alibaba-inc.com>

interactive_engine/compiler/src/main/java/com/alibaba/graphscope/cypher/antlr4/visitor/PathExpandBuilderVisitor.java

@@ -17,6 +17,8 @@
 package com.alibaba.graphscope.cypher.antlr4.visitor;
 
 import com.alibaba.graphscope.common.ir.tools.config.ExpandConfig;
+import com.alibaba.graphscope.common.ir.tools.config.GetVConfig;
+import com.alibaba.graphscope.common.ir.tools.config.LabelConfig;
 import com.alibaba.graphscope.common.ir.tools.config.PathExpandConfig;
 import com.alibaba.graphscope.grammar.CypherGSBaseVisitor;
 import com.alibaba.graphscope.grammar.CypherGSParser;
@@ -52,7 +54,10 @@ public PathExpandConfig.Builder visitOC_RelationshipPattern(
     @Override
     public PathExpandConfig.Builder visitOC_NodePattern(CypherGSParser.OC_NodePatternContext ctx) {
         // set getV base in path_expand
-        return builder.getV(Utils.getVConfig(ctx));
+        GetVConfig getVConfig = Utils.getVConfig(ctx);
+        // labelConfig is set to default, to get all vertex labels adjacent to the edge
+        // alias is set to null for it will never be used
+        return builder.getV(new GetVConfig(getVConfig.getOpt(), LabelConfig.DEFAULT));
     }
 
     @Override

interactive_engine/compiler/src/test/java/com/alibaba/graphscope/cypher/antlr4/MatchTest.java

@@ -70,6 +70,11 @@ public void match_3_test() {
                 match.explain().trim());
     }
 
+    // for the sentence `(a:person)-[b:knows*1..3]-(c:person)`:
+    // b is a path_expand operator, expand base should be `knows` type, getV base should be any
+    // vertex types adjacent to knows (currently we have not implemented type inference based on
+    // graph schema, so all vertex types are considered here)
+    // c is a getV operator which should be `person` type
     @Test
     public void match_4_test() {
         RelNode match =
@@ -85,8 +90,8 @@ public void match_4_test() {
                     + "  GraphLogicalPathExpand(expand=[GraphLogicalExpand(tableConfig=[{isAll=false,"
                     + " tables=[knows]}], alias=[DEFAULT], fusedFilter=[[=(DEFAULT.weight,"
                     + " 1.0E0)]], opt=[OUT])\n"
-                    + "], getV=[GraphLogicalGetV(tableConfig=[{isAll=false, tables=[person]}],"
-                    + " alias=[DEFAULT], opt=[END])\n"
+                    + "], getV=[GraphLogicalGetV(tableConfig=[{isAll=true, tables=[software,"
+                    + " person]}], alias=[DEFAULT], opt=[END])\n"
                     + "], offset=[1], fetch=[2], path_opt=[ARBITRARY], result_opt=[EndV],"
                     + " alias=[b])\n"
                     + "    GraphLogicalSource(tableConfig=[{isAll=false, tables=[person]}],"