Move duplicate code in QueryCriteria to new method. (#1706)

Co-authored-by: Shubham Mishra <[email protected]>

Author: shubham101096

src/main/java/org/springframework/data/couchbase/core/query/QueryCriteria.java

@@ -38,6 +38,7 @@
  * @author Michael Nitschinger
  * @author Michael Reiche
  * @author Mauro Monti
+ * @author Shubham Mishra
  */
 public class QueryCriteria implements QueryCriteriaDefinition {
 
@@ -148,13 +149,7 @@ public QueryCriteria and(N1QLExpression key) {
 	}
 
 	public QueryCriteria and(QueryCriteria criteria) {
-		if (this.criteriaChain != null && !this.criteriaChain.contains(this)) {
-			throw new RuntimeException("criteria chain does not include this");
-		}
-		if (this.criteriaChain == null) {
-			this.criteriaChain = new LinkedList<>();
-			this.criteriaChain.add(this);
-		}
+		checkAndAddToCriteriaChain();
 		QueryCriteria newThis = wrap(this);
 		QueryCriteria qc = wrap(criteria);
 		newThis.criteriaChain.add(qc);
@@ -189,13 +184,7 @@ public QueryCriteria or(N1QLExpression key) {
 	}
 
 	public QueryCriteria or(QueryCriteria criteria) {
-		if (this.criteriaChain != null && !this.criteriaChain.contains(this)) {
-			throw new RuntimeException("criteria chain does not include this");
-		}
-		if (this.criteriaChain == null) {
-			this.criteriaChain = new LinkedList<>();
-			this.criteriaChain.add(this);
-		}
+		checkAndAddToCriteriaChain();
 		QueryCriteria newThis = wrap(this);
 		QueryCriteria qc = wrap(criteria);
 		qc.criteriaChain = newThis.criteriaChain;
@@ -719,4 +708,14 @@ public String toString() {
 		sb.append("}");
 		return sb.toString();
 	}
+
+	private void checkAndAddToCriteriaChain() {
+		if (this.criteriaChain != null && !this.criteriaChain.contains(this)) {
+			throw new RuntimeException("criteria chain does not include this");
+		}
+		if (this.criteriaChain == null) {
+			this.criteriaChain = new LinkedList<>();
+			this.criteriaChain.add(this);
+		}
+	}
 }