FMWK-870 Support selecting secondary index by name

src/main/java/com/aerospike/dsl/IndexContext.java

@@ -1,9 +1,11 @@
 package com.aerospike.dsl;
 
+import com.aerospike.dsl.client.query.Filter;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 
 import java.util.Collection;
+import java.util.List;
 
 /**
  * This class stores namespace and indexes required to build secondary index Filter
@@ -22,4 +24,24 @@ public class IndexContext {
      * with bins in DSL String
      */
     private Collection<Index> indexes;
+
+
+    /**
+     * Create index context specifying the index to be used.
+     *
+     * @param namespace  Namespace to be used for creating {@link Filter}. Is matched with namespace of indexes
+     * @param indexes    Collection of {@link Index} objects to be used for creating {@link Filter}. Bin name and
+     *                   index type are matched with bins in DSL String
+     * @param indexToUse The name of an index to use for creating {@link Filter}. If the index with the specified name
+     *                   is not found, the resulting index is chosen the usual way (cardinality-based or alphabetically)
+     * @return A new instance of {@code IndexContext}
+     */
+    public static IndexContext of(String namespace, Collection<Index> indexes, String indexToUse) {
+        List<Index> singleIndexList = indexes.stream().filter(idx -> areNamesEqual(idx, indexToUse)).toList();
+        return new IndexContext(namespace, singleIndexList.isEmpty() ? indexes : singleIndexList);
+    }
+
+    private static boolean areNamesEqual(Index idx, String indexToUse) {
+        return idx != null && idx.getName() != null && idx.getName().equals(indexToUse);
+    }
 }

src/test/java/com/aerospike/dsl/parsedExpression/LogicalParsedExpressionTests.java

@@ -153,6 +153,41 @@ void binLogical_AND_AND_all_indexes_no_cardinality() {
                 IndexContext.of(TestUtils.NAMESPACE, indexes));
     }
 
+    @Test
+    void binLogical_AND_AND_explicitly_given_index() {
+        List<Index> indexes = List.of(
+                Index.builder().namespace(TestUtils.NAMESPACE).name("idx_bin1").bin("intBin1")
+                        .indexType(IndexType.NUMERIC).binValuesRatio(0).build(),
+                Index.builder().namespace(TestUtils.NAMESPACE).name("idx_bin2").bin("intBin2")
+                        .indexType(IndexType.NUMERIC).binValuesRatio(1).build(),
+                Index.builder().namespace(TestUtils.NAMESPACE).name("idx_bin3").bin("intBin3")
+                        .indexType(IndexType.NUMERIC).binValuesRatio(0).build()
+        );
+        Filter filter = Filter.range("intBin1", 101, Long.MAX_VALUE); // The index has been chosen manually
+        Exp exp = Exp.and(
+                Exp.gt(Exp.intBin("intBin2"), Exp.val(100)),
+                Exp.gt(Exp.intBin("intBin3"), Exp.val(100))
+        );
+        parseDslExpressionAndCompare(ExpressionContext.of("$.intBin1 > 100 and $.intBin2 > 100 and $.intBin3 > 100"), filter, exp,
+                IndexContext.of(TestUtils.NAMESPACE, indexes, "idx_bin1")); // Manually selecting the index by its name
+    }
+
+    @Test
+    void binLogical_AND_AND_explicitly_given_index_unavailable() {
+        List<Index> indexes = List.of(
+                Index.builder().namespace(TestUtils.NAMESPACE).bin("intBin1").indexType(IndexType.NUMERIC).binValuesRatio(0).build(),
+                Index.builder().namespace(TestUtils.NAMESPACE).name("idx_bin2").bin("intBin2").indexType(IndexType.NUMERIC).binValuesRatio(1).build(),
+                Index.builder().namespace(TestUtils.NAMESPACE).bin("intBin3").indexType(IndexType.NUMERIC).binValuesRatio(0).build()
+        );
+        Filter filter = Filter.range("intBin2", 101, Long.MAX_VALUE); // Fallback to choosing the index regularly
+        Exp exp = Exp.and(
+                Exp.gt(Exp.intBin("intBin1"), Exp.val(100)),
+                Exp.gt(Exp.intBin("intBin3"), Exp.val(100))
+        );
+        parseDslExpressionAndCompare(ExpressionContext.of("$.intBin1 > 100 and $.intBin2 > 100 and $.intBin3 > 100"), filter, exp,
+                IndexContext.of(TestUtils.NAMESPACE, indexes, "intBin10")); // There is no index with the name "intBin10"
+    }
+
     @Test
     void binLogical_AND_AND_all_indexes_partial_data() {
         List<Index> indexes = List.of(