Even more adds and fixes in documentation

src/qir/ast/QIRDBNode.java

@@ -10,7 +10,8 @@ import qir.util.QIRAny;
  * This class represents a QIR expression that should be executed in a database using the driver
  * {@link QIRDBNode#driver}.
  *
- * @param DBRepr The type of representation of a query for the database.
+ * @param <DBRepr> The type of representation of a query for the database.
+ * @param <ConnData> The type of the configuration data to connect to the database.
  */
 public final class QIRDBNode<DBRepr, ConnData> extends QIRNode {
     /**

src/qir/ast/data/QIRTable.java

@@ -10,7 +10,9 @@ import qir.util.QIRAny;
 /**
  * The {@link QIRTable} is the representation of a table of a database in QIR.
  *
- * @param DBRepr The type of representation of a query for the database.
+ * @param <DBRepr> The type of representation of a query for the database.
+ * @param <ConnData> The type of representation of the configuration data to connect to the targeted
+ *            database.
  */
 public final class QIRTable<DBRepr, ConnData> extends QIRNode {
     /**

src/qir/ast/operator/QIRJoin.java

@@ -10,6 +10,10 @@ import qir.util.QIRAny;
  * The {@link QIRJoin} represents the join operation of relational algebra.
  */
 public final class QIRJoin extends QIROperator {
+    /**
+     * The filter function that takes two tuples and returns a value (typically a boolean) that
+     * describes whether or not the tuples should be merged and added to the result set.
+     */
     public final QIRNode filter;
     /**
      * The left {@link QIROperator} of the join.

src/qir/ast/operator/QIRLeftJoin.java

@@ -10,6 +10,10 @@ import qir.util.QIRAny;
  * The {@link QIRLeftJoin} represents the join operation of relational algebra.
  */
 public final class QIRLeftJoin extends QIROperator {
+    /**
+     * The filter function that takes two tuples and returns a value (typically a boolean) that
+     * describes whether or not the tuples should be merged and added to the result set.
+     */
     public final QIRNode filter;
     /**
      * The left {@link QIROperator} of the join.

src/qir/ast/operator/QIRRightJoin.java

@@ -10,6 +10,10 @@ import qir.util.QIRAny;
  * The {@link QIRRightJoin} represents the join operation of relational algebra.
  */
 public final class QIRRightJoin extends QIROperator {
+    /**
+     * The filter function that takes two tuples and returns a value (typically a boolean) that
+     * describes whether or not the tuples should be merged and added to the result set.
+     */
     public final QIRNode filter;
     /**
      * The left {@link QIROperator} of the join.

src/qir/driver/DBDriver.java

@@ -7,8 +7,8 @@ import qir.util.QIRException;
 /**
  * Generic driver for databases.
  *
- * @param DBRepr The type of representation of a query for the targeted database.
- * @param ConnData The type of representation of the configuration data to connect to the targeted
+ * @param <DBRepr> The type of representation of a query for the targeted database.
+ * @param <ConnData> The type of representation of the configuration data to connect to the targeted
  *            database.
  */
 public abstract class DBDriver<DBRepr, ConnData> {

src/qir/driver/IQIRVisitor.java

@@ -10,8 +10,10 @@ import qir.ast.value.*;
 import qir.util.QIRException;
 
 /**
- * Implement IQIRVisitor<T> to visit a QIR tree. The return type of the visit functions in the
- * visitor and the accept functions in the QIR nodes is T.
+ * Implement IQIRVisitor to visit a QIR tree.
+ *
+ * @param <T> The return type of the visit functions in the visitor and the accept functions in the
+ *            QIR nodes.
  */
 public interface IQIRVisitor<T> {
     public default T visit(final QIRProject qirProject) {

src/qir/driver/sql/SQLDriver.java

@@ -9,7 +9,7 @@ import qir.util.QIRException;
 /**
  * Abstract driver for SQL databases. Drivers for SQL databases should extend this class.
  *
- * @param DBRepr The type of representation of a query for the database.
+ * @param <DBRepr> The type of representation of a query for the database.
  */
 public abstract class SQLDriver<DBRepr> extends DBDriver<DBRepr, ConnectionData> {
     protected Connection conn;