feat: Improve code quality + upgrade to Common 1.0.0

• feat: Improve code quality + upgrade to Common 1.0.0

Relates to #18 (closed)

src/main/java/org/eclipsefoundation/mailing/dto/MailingListSubscriptions.java

@@ -14,7 +14,9 @@ package org.eclipsefoundation.mailing.dto;
 import java.util.Date;
 import java.util.Objects;
 
-import org.eclipsefoundation.core.namespace.DefaultUrlParameterNames;
+import org.apache.commons.lang3.StringUtils;
+import org.eclipsefoundation.http.namespace.DefaultUrlParameterNames;
+import org.eclipsefoundation.mailing.namespace.MailingListUrlParameterNames;
 import org.eclipsefoundation.persistence.dto.BareNode;
 import org.eclipsefoundation.persistence.dto.filter.DtoFilter;
 import org.eclipsefoundation.persistence.model.DtoTable;
@@ -139,13 +141,13 @@ public class MailingListSubscriptions extends BareNode {
             if (isRoot) {
                 // ID check
                 String id = params.getFirst(DefaultUrlParameterNames.ID.getName());
-                if (id != null) {
+                if (StringUtils.isNotBlank(id)) {
                     stmt.addClause(
                             new ParameterizedSQLStatement.Clause(TABLE.getAlias() + ".email = ?", new Object[] { id }));
                 }
                 // project ID check
-                String listName = params.getFirst("list_name");
-                if (listName != null) {
+                String listName = params.getFirst(MailingListUrlParameterNames.LIST_NAME.getName());
+                if (StringUtils.isNotBlank(listName)) {
                     stmt.addClause(new ParameterizedSQLStatement.Clause(TABLE.getAlias() + ".listName = ?",
                             new Object[] { listName }));
                 }
@@ -157,6 +159,5 @@ public class MailingListSubscriptions extends BareNode {
         public Class<MailingListSubscriptions> getType() {
             return MailingListSubscriptions.class;
         }
-
     }
 }